{"id":2020,"date":"2024-07-12T12:41:52","date_gmt":"2024-07-12T12:41:52","guid":{"rendered":"https:\/\/tryvary.com\/?p=2020"},"modified":"2024-07-12T12:41:52","modified_gmt":"2024-07-12T12:41:52","slug":"best-pcb-material-for-high-frequency-circuits","status":"publish","type":"post","link":"https:\/\/tryvary.com\/vi\/vat-lieu-pcb-tot-nhat-cho-mach-tan-so-cao\/","title":{"rendered":"V\u1eadt li\u1ec7u n\u00e0o l\u00e0 t\u1ed1t nh\u1ea5t cho m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao?"},"content":{"rendered":"<p>Khi thi\u1ebft k\u1ebf c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u thi\u1ebft y\u1ebfu l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u, gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t t\u00edn hi\u1ec7u v\u00e0 duy tr\u00ec hi\u1ec7u su\u1ea5t \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh. <strong>T\u1ea5m hydrocacbon nhi\u1ec7t r\u1eafn<\/strong>, ch\u1eb3ng h\u1ea1n nh\u01b0 <strong>Rogers 4350B<\/strong> V\u00e0 <strong>Megtron 6<\/strong>, cung c\u1ea5p h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p, <strong>tr\u1edf kh\u00e1ng \u0111i\u1ec1u khi\u1ec3n<\/strong>&#44; <strong>\u0111\u1ed9 d\u1eabn nhi\u1ec7t cao<\/strong>v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc v\u01b0\u1ee3t tr\u1ed9i. Nh\u1eefng \u0111\u1eb7c t\u00ednh n\u00e0y l\u00e0m cho ch\u00fang tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao. C\u00e1c v\u1eadt li\u1ec7u thay th\u1ebf, ch\u1eb3ng h\u1ea1n nh\u01b0 polyimide v\u00e0 PTFE, c\u0169ng mang l\u1ea1i l\u1ee3i \u00edch cho c\u00e1c y\u00eau c\u1ea7u thi\u1ebft k\u1ebf c\u1ee5 th\u1ec3. B\u1eb1ng c\u00e1ch hi\u1ec3u c\u00e1c \u0111\u1eb7c t\u00ednh ch\u00ednh c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 hi\u1ec7u su\u1ea5t t\u1ed1t nh\u1ea5t, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u01b0a ra l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u s\u00e1ng su\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o v\u1eadn h\u00e0nh m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao \u0111\u00e1ng tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3, \u0111\u1ed3ng th\u1eddi kh\u00e1m ph\u00e1 c\u00e1c t\u00f9y ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p nh\u1ea5t cho nhu c\u1ea7u thi\u1ebft k\u1ebf c\u1ee5 th\u1ec3 c\u1ee7a h\u1ecd.<\/p>\n<h2>B\u00e0i h\u1ecdc ch\u00ednh<\/h2>\n<ul>\n<li>C\u00e1c v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p (Dk) nh\u01b0 Rogers 4350B v\u00e0 Megtron 6 gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t t\u00edn hi\u1ec7u v\u00e0 duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a tr\u1edf kh\u00e1ng.<\/li>\n<li>C\u00e1c v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t th\u1ea5p, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u1ea5m hydrocacbon nhi\u1ec7t r\u1eafn, cho ph\u00e9p t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3.<\/li>\n<li>V\u1eadt li\u1ec7u polyimide ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, trong khi PTFE (Teflon) \u0111\u01b0\u1ee3c \u01b0u ti\u00ean cho c\u00e1c \u1ee9ng d\u1ee5ng RF t\u1ea7n s\u1ed1 cao do h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p.<\/li>\n<li>Qu\u1ea3n l\u00fd nhi\u1ec7t hi\u1ec7u qu\u1ea3 l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ch\u1eb7n hi\u1ec7n t\u01b0\u1ee3ng qu\u00e1 nhi\u1ec7t, c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u v\u00e0 l\u00e0m h\u01b0 h\u1ecfng c\u00e1c th\u00e0nh ph\u1ea7n.<\/li>\n<li>L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u n\u00ean \u01b0u ti\u00ean h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p, tr\u1edf kh\u00e1ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t v\u00e0 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao \u0111\u1ec3 c\u00f3 hi\u1ec7u su\u1ea5t m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao t\u1ed1i \u01b0u.<\/li>\n<\/ul>\n<h2>Hi\u1ec3u c\u00e1c y\u00eau c\u1ea7u v\u1ec1 m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/h2>\n<div class=\"embed-youtube\" style=\"position: relative; width: 100%; height: 0; padding-bottom: 56.25%; margin-bottom:20px;\"><iframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" src=\"https:\/\/www.youtube.com\/embed\/6jrVZu7eqiw\" title=\"Tr\u00ecnh ph\u00e1t video YouTube\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/div>\n<p>M\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, n\u01a1i <strong>t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u00edn hi\u1ec7u<\/strong> v\u01b0\u1ee3t qu\u00e1 100 MHz, y\u00eau c\u1ea7u m\u1ed9t b\u1ed9 ch\u00ednh x\u00e1c <strong>t\u00ednh ch\u1ea5t v\u1eadt ch\u1ea5t<\/strong> \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady v\u00e0 gi\u1ea3m thi\u1ec3u <strong>suy gi\u1ea3m t\u00edn hi\u1ec7u<\/strong>. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho b\u1ea3ng m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao l\u00e0 r\u1ea5t quan tr\u1ecdng v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n<p>H\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p (Dk) l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t t\u00edn hi\u1ec7u \u1edf t\u1ea7n s\u1ed1 cao, \u0111\u1ea3m b\u1ea3o truy\u1ec1n t\u00edn hi\u1ec7u l\u00fd t\u01b0\u1edfng. H\u01a1n n\u1eefa, ch\u1eb7t ch\u1ebd <strong>\u0111i\u1ec1u khi\u1ec3n tr\u1edf kh\u00e1ng<\/strong> l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec hi\u1ec7u su\u1ea5t \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh v\u00e0 ng\u0103n ch\u1eb7n s\u1ef1 suy gi\u1ea3m t\u00edn hi\u1ec7u. Hi\u1ec7u qu\u1ea3 <strong>qu\u1ea3n l\u00fd nhi\u1ec7t<\/strong> c\u0169ng r\u1ea5t quan tr\u1ecdng, v\u00ec <strong>m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong> t\u1ea1o ra l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u00e1ng k\u1ec3 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady. Ch\u1ea5t li\u1ec7u c\u00f3 \u01b0u \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i <strong>\u0111\u1eb7c t\u00ednh t\u1ea3n nhi\u1ec7t<\/strong> l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ng\u1eeba c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn nhi\u1ec7t.<\/p>\n<p>Ngo\u00e0i ra, v\u1eadt li\u1ec7u ph\u1ea3i th\u1ec3 hi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u01a1 h\u1ecdc, kh\u1ea3 n\u0103ng ch\u1ed1ng \u1ea9m v\u00e0 h\u1ec7 s\u1ed1 t\u1ed5n th\u1ea5t \u0111i\u1ec7n m\u00f4i th\u1ea5p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u00e1c nhau. <strong>\u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng<\/strong>. B\u1eb1ng c\u00e1ch hi\u1ec3u nh\u1eefng y\u00eau c\u1ea7u n\u00e0y, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u \u0111\u00e1p \u1ee9ng nhu c\u1ea7u nghi\u00eam ng\u1eb7t c\u1ee7a m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady tuy\u1ec7t v\u1eddi.<\/p>\n<h2>Thu\u1ed9c t\u00ednh ch\u00ednh cho hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/optimal_performance_best_practices.jpg\" alt=\"th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t v\u1ec1 hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>V\u00ec <strong>hi\u1ec7u su\u1ea5t cao \u0111i\u1ec3m<\/strong> trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, v\u1eadt li\u1ec7u ph\u1ea3i c\u00f3 m\u1ed9t t\u1eadp h\u1ee3p \u0111\u1eb7c t\u00ednh ri\u00eang bi\u1ec7t \u0111\u1ea3m b\u1ea3o <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong>&#44; <strong>t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3<\/strong>, V\u00e0 <strong>\u1ed5n \u0111\u1ecbnh c\u01a1 h\u1ecdc<\/strong>.<\/p>\n<p>Khi ch\u1ecdn v\u1eadt li\u1ec7u PCB t\u1ed1c \u0111\u1ed9 cao, h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p (Dk) l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u m\u1ea5t t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u. <strong>Tr\u1edf kh\u00e1ng \u0111i\u1ec1u khi\u1ec3n<\/strong> c\u0169ng r\u1ea5t quan tr\u1ecdng v\u00ec n\u00f3 cho ph\u00e9p ki\u1ec3m so\u00e1t tr\u1edf kh\u00e1ng ch\u1eb7t ch\u1ebd, mang l\u1ea1i hi\u1ec7u su\u1ea5t \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh trong c\u00e1c thi\u1ebft k\u1ebf t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<p>\u0110\u1ed9 d\u1eabn nhi\u1ec7t l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu kh\u00e1c, v\u00ec \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao <strong>d\u1eabn nhi\u1ec7t<\/strong> l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3 trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao. \u0110i\u1ec1u n\u00e0y ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng qu\u00e1 nhi\u1ec7t, c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady.<\/p>\n<p>Th\u01b0\u1ee3ng \u0111\u1eb3ng <strong>\u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc<\/strong> c\u0169ng r\u1ea5t quan tr\u1ecdng, \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u01a1 h\u1ecdc v\u00e0 hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao. Ngo\u00e0i ra, c\u00e1c v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u1ea9m v\u00e0 h\u00f3a ch\u1ea5t r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao v\u00ec ch\u00fang ng\u0103n ng\u1eeba s\u1ef1 xu\u1ed1ng c\u1ea5p v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh theo th\u1eddi gian.<\/p>\n<h2>L\u1ee3i \u00edch c\u1ee7a t\u1ea5m \u00e9p nhi\u1ec7t Hydrocarbon<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/thermoset_hydrocarbon_laminate_advantages.jpg\" alt=\"\u01afu \u0111i\u1ec3m c\u1ee7a t\u1ea5m nhi\u1ec7t hydrocarbon\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>C\u00e1c t\u1ea5m hydrocacbon nhi\u1ec7t r\u1eafn n\u1ed5i l\u00ean nh\u01b0 m\u1ed9t s\u1ef1 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u \u01b0a th\u00edch cho c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao do s\u1ef1 k\u1ebft h\u1ee3p \u0111\u1ed9c \u0111\u00e1o c\u00e1c \u0111\u1eb7c t\u00ednh thu\u1eadn l\u1ee3i c\u1ee7a ch\u00fang. Nh\u1eefng l\u1edbp m\u1ecfng n\u00e0y mang l\u1ea1i s\u1ef1 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc tuy\u1ec7t v\u1eddi, \u0111\u1ea3m b\u1ea3o r\u1eb1ng thi\u1ebft k\u1ebf m\u1ea1ch v\u1eabn nh\u1ea5t qu\u00e1n v\u00e0 \u0111\u00e1ng tin c\u1eady. Ngo\u00e0i ra, ch\u00fang c\u00f2n cung c\u1ea5p c\u00e1c \u0111\u1eb7c t\u00ednh qu\u1ea3n l\u00fd nhi\u1ec7t v\u01b0\u1ee3t tr\u1ed9i, t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3 v\u00e0 duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 v\u1eadn h\u00e0nh l\u00fd t\u01b0\u1edfng.<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: center\">T\u00e0i s\u1ea3n<\/th>\n<th style=\"text-align: center\">L\u1ee3i \u00edch<\/th>\n<th style=\"text-align: center\">L\u1ee3i th\u1ebf<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center\">\u1ed4n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc<\/td>\n<td style=\"text-align: center\">Thi\u1ebft k\u1ebf nh\u1ea5t qu\u00e1n<\/td>\n<td style=\"text-align: center\">M\u00e0n th\u1ec3 hi\u1ec7n \u0111\u00e1ng tin, s\u1ef1 th\u1ec3 hi\u1ec7n \u0111\u00e1ng tin<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">Qu\u1ea3n l\u00fd nhi\u1ec7t<\/td>\n<td style=\"text-align: center\">T\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3<\/td>\n<td style=\"text-align: center\">Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng l\u00fd t\u01b0\u1edfng<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">\u0110\u1eb7c \u0111i\u1ec3m t\u1ed5n th\u1ea5t th\u1ea5p<\/td>\n<td style=\"text-align: center\">Hi\u1ec7u su\u1ea5t t\u00edn hi\u1ec7u n\u00e2ng cao<\/td>\n<td style=\"text-align: center\">Truy\u1ec1n d\u1eef li\u1ec7u nhanh v\u00e0 ch\u00ednh x\u00e1c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0110\u1eb7c t\u00ednh t\u1ed5n hao th\u1ea5p c\u1ee7a t\u1ea5m hydrocacbon nhi\u1ec7t r\u1eafn cho ph\u00e9p c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t t\u00edn hi\u1ec7u n\u00e2ng cao, \u0111\u1ea3m b\u1ea3o truy\u1ec1n d\u1eef li\u1ec7u nhanh v\u00e0 ch\u00ednh x\u00e1c. H\u01a1n n\u1eefa, nh\u1eefng t\u1ea5m m\u1ecfng n\u00e0y cho ph\u00e9p ki\u1ec3m so\u00e1t tr\u1edf kh\u00e1ng ch\u1eb7t ch\u1ebd, mang l\u1ea1i hi\u1ec7u su\u1ea5t \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh. \u0110\u1eb7c t\u00ednh kh\u00e1ng \u0111\u1ed9 \u1ea9m v\u00e0 h\u00f3a ch\u1ea5t c\u1ee7a ch\u00fang c\u0169ng g\u00f3p ph\u1ea7n v\u00e0o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh c\u1ee7a c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/p>\n<h2>C\u00e1c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u thay th\u1ebf \u0111\u01b0\u1ee3c so s\u00e1nh<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/comparing_alternative_building_materials.jpg\" alt=\"so s\u00e1nh v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng thay th\u1ebf\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Trong khi <strong>t\u1ea5m hydrocacbon nhi\u1ec7t r\u1eafn<\/strong> cung c\u1ea5p s\u1ef1 k\u1ebft h\u1ee3p h\u1ea5p d\u1eabn c\u1ee7a c\u00e1c \u0111\u1eb7c t\u00ednh cho m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, v\u1eadt li\u1ec7u thay th\u1ebf nh\u01b0 <strong>Rogers 4350B<\/strong> V\u00e0 <strong>Megtron 6<\/strong> \u0111\u00e3 n\u1ed5i l\u00ean nh\u01b0 nh\u1eefng l\u1ef1a ch\u1ecdn kh\u1ea3 thi, t\u1ef1 h\u00e0o <strong>ti\u1ebfp tuy\u1ebfn t\u1ed5n th\u1ea5t th\u1ea5p<\/strong> V\u00e0 <strong>h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i<\/strong> cho c\u00e1c thi\u1ebft k\u1ebf PCB \u0111\u00f2i h\u1ecfi kh\u1eaft khe.<\/p>\n<p>Nh\u1eefng v\u1eadt li\u1ec7u thay th\u1ebf n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a FR-4 truy\u1ec1n th\u1ed1ng, mang l\u1ea1i c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u1ed9 tin c\u1eady v\u01b0\u1ee3t tr\u1ed9i. V\u00ed d\u1ee5, Rogers 4350B mang l\u1ea1i hi\u1ec7u su\u1ea5t t\u1ea7n s\u1ed1 cao tuy\u1ec7t v\u1eddi v\u1edbi h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i x\u1ea5p x\u1ec9 3,48, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho <strong>thi\u1ebft k\u1ebf PCB t\u1ed1c \u0111\u1ed9 cao<\/strong>.<\/p>\n<p>M\u1eb7t kh\u00e1c, Megtron 6 cung c\u1ea5p nh\u1eefng c\u1ea3i ti\u1ebfn <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong> v\u00e0 gi\u1ea3m m\u1ea5t t\u00edn hi\u1ec7u v\u1edbi h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i kho\u1ea3ng 3,66. B\u1eb1ng c\u00e1ch ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u t\u00ecnh tr\u1ea1ng m\u1ea5t t\u00edn hi\u1ec7u, duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u v\u00e0 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<p>V\u1edbi h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i v\u00e0 ti\u1ebfp tuy\u1ebfn t\u1ed5n th\u1ea5t th\u1ea5p, Rogers 4350B v\u00e0 Megtron 6 r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng t\u1ed1c \u0111\u1ed9 cao trong \u0111\u00f3 t\u00ednh to\u00e0n v\u1eb9n v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a t\u00edn hi\u1ec7u l\u00e0 t\u1ed1i quan tr\u1ecdng.<\/p>\n<h2>T\u00f9y ch\u1ecdn v\u1eadt li\u1ec7u ch\u1ebf t\u1ea1o PCB<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/material_choices_for_pcbs.jpg\" alt=\"l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho pcbs\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Ngo\u00e0i l\u0129nh v\u1ef1c v\u1eadt li\u1ec7u thay th\u1ebf, vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ch\u1ebf t\u1ea1o PCB mang \u0111\u1ebfn nhi\u1ec1u l\u1ef1a ch\u1ecdn \u0111a d\u1ea1ng, m\u1ed7i l\u1ef1a ch\u1ecdn \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 c\u1ee5 th\u1ec3. <strong>Y\u00eau c\u1ea7u m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong>. Khi n\u00f3i \u0111\u1ebfn PCB t\u1ed1c \u0111\u1ed9 cao, vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n<p>Nh\u1ef1a epoxy (FR-4) l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn, nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 kh\u00f4ng l\u00fd t\u01b0\u1edfng do g\u1eb7p kh\u00f3 kh\u0103n trong vi\u1ec7c ki\u1ec3m so\u00e1t tr\u1edf kh\u00e1ng ch\u1eb7t ch\u1ebd, m\u1ea5t t\u00edn hi\u1ec7u cao h\u01a1n \u1edf t\u1ea7n s\u1ed1 cao, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u01a1 h\u1ecdc h\u1ea1n ch\u1ebf v\u00e0 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m cao h\u01a1n. <strong>V\u1eadt li\u1ec7u epoxy t\u0103ng c\u01b0\u1eddng<\/strong>m\u1eb7t kh\u00e1c, cung c\u1ea5p c\u00e1c \u0111\u1eb7c t\u00ednh \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n cho c\u00e1c thi\u1ebft k\u1ebf t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<p>V\u1eadt li\u1ec7u polyimide ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t, trong khi PTFE (Teflon) \u0111\u01b0\u1ee3c \u01b0u ti\u00ean cho c\u00e1c \u1ee9ng d\u1ee5ng RF t\u1ea7n s\u1ed1 cao do h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i v\u00e0 h\u1ec7 s\u1ed1 ti\u00eau t\u00e1n th\u1ea5p. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u bao g\u1ed3m vi\u1ec7c xem x\u00e9t c\u1ea9n th\u1eadn hi\u1ec7u su\u1ea5t t\u00edn hi\u1ec7u, \u0111\u1ed9 b\u1ec1n, chi ph\u00ed, <strong>v\u1ea5n \u0111\u1ec1 tr\u1edf kh\u00e1ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t<\/strong>, xem x\u00e9t nhi\u1ec7t, v\u00e0 <strong>ti\u1ebfp x\u00fac v\u1edbi c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau<\/strong>.<\/p>\n<h2>L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho thi\u1ebft k\u1ebf t\u1ed1c \u0111\u1ed9 cao<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/high_speed_design_material_selection.jpg\" alt=\"l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u thi\u1ebft k\u1ebf t\u1ed1c \u0111\u1ed9 cao\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, c\u1ea7n ph\u1ea3i t\u00ednh \u0111\u1ebfn c\u00e1c \u0111\u1eb7c t\u00ednh b\u00ean trong c\u1ee7a v\u1eadt li\u1ec7u v\u00ec ch\u00fang t\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong> V\u00e0 <strong>qu\u1ea3n l\u00fd nhi\u1ec7t<\/strong>.<\/p>\n<p>\u0110\u1eb7c t\u00ednh \u0111i\u1ec7n m\u00f4i c\u1ee7a v\u1eadt li\u1ec7u, s\u1ef1 m\u1ea5t t\u00edn hi\u1ec7u \u1edf t\u1ea7n s\u1ed1 ho\u1ea1t \u0111\u1ed9ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng \u0111\u1ec1u \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u.<\/p>\n<h3>Thu\u1ed9c t\u00ednh v\u1eadt ch\u1ea5t<\/h3>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea9n th\u1eadn c\u00e1c v\u1eadt li\u1ec7u cho <strong>m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong> l\u00e0 r\u1ea5t quan tr\u1ecdng, v\u00ec t\u00ednh ch\u1ea5t v\u1ed1n c\u00f3 c\u1ee7a nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y \u1ea3nh h\u01b0\u1edfng l\u1edbn <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong> v\u00e0 hi\u1ec7u n\u0103ng t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng. T\u00ednh ch\u1ea5t v\u1eadt ch\u1ea5t nh\u01b0 <strong>h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i<\/strong> v\u00e0 h\u1ec7 s\u1ed1 t\u1ea3n nhi\u1ec7t, r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<p>L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 h\u00e0m l\u01b0\u1ee3ng th\u1ea5p <strong>m\u1ea5t ti\u1ebfp tuy\u1ebfn<\/strong> v\u00e0 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i gi\u00fap gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t t\u00edn hi\u1ec7u v\u00e0 duy tr\u00ec hi\u1ec7u su\u1ea5t t\u1ed1c \u0111\u1ed9 cao \u0111\u00e1ng tin c\u1eady. Ngo\u00e0i ra, v\u1eadt li\u1ec7u m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao s\u1ebd cung c\u1ea5p ch\u1eb7t ch\u1ebd <strong>\u0111i\u1ec1u khi\u1ec3n tr\u1edf kh\u00e1ng<\/strong> v\u00e0 v\u01b0\u1ee3t tr\u1ed9i <strong>qu\u1ea3n l\u00fd nhi\u1ec7t<\/strong> \u0111\u1ec3 truy\u1ec1n t\u00edn hi\u1ec7u v\u00e0 t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3.<\/p>\n<p>V\u1eadt li\u1ec7u l\u00fd t\u01b0\u1edfng th\u1ec3 hi\u1ec7n s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc, t\u1ed5n th\u1ea5t th\u1ea5p, kh\u1ea3 n\u0103ng ch\u1ed1ng \u1ea9m v\u00e0 tr\u1edf kh\u00e1ng \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 v\u1eadn h\u00e0nh \u0111\u00e1ng tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i t\u00ednh \u0111\u1ebfn c\u00e1c t\u00ednh ch\u1ea5t \u0111i\u1ec7n, nhi\u1ec7t, h\u00f3a h\u1ecdc v\u00e0 c\u01a1 h\u1ecdc khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho c\u00e1c \u1ee9ng d\u1ee5ng m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<h3>T\u00e1c \u0111\u1ed9ng \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u<\/h3>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao c\u00f3 t\u00e1c \u0111\u1ed9ng s\u00e2u s\u1eafc \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u v\u00ec c\u00e1c \u0111\u1eb7c t\u00ednh v\u1ed1n c\u00f3 c\u1ee7a v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c ch\u1ecdn c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3 truy\u1ec1n t\u00edn hi\u1ec7u. H\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i (Dk) v\u00e0 h\u1ec7 s\u1ed1 ti\u00eau t\u00e1n (Df) c\u1ee7a v\u1eadt li\u1ec7u \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n tr\u1edf kh\u00e1ng v\u00e0 gi\u1ea3m thi\u1ec3u t\u1ed5n th\u1ea5t t\u00edn hi\u1ec7u.<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: center\">V\u1eadt li\u1ec7u<\/th>\n<th style=\"text-align: center\">H\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i (Dk)<\/th>\n<th style=\"text-align: center\">H\u1ec7 s\u1ed1 t\u1ea3n nhi\u1ec7t (Df)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center\">FR4<\/td>\n<td style=\"text-align: center\">4.2-4.5<\/td>\n<td style=\"text-align: center\">0.02-0.03<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">Rogers 4350B<\/td>\n<td style=\"text-align: center\">3.48<\/td>\n<td style=\"text-align: center\">0.0037<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">Megtron 6<\/td>\n<td style=\"text-align: center\">3.8<\/td>\n<td style=\"text-align: center\">0.004<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">Taconic TLX-8<\/td>\n<td style=\"text-align: center\">3.9<\/td>\n<td style=\"text-align: center\">0.0035<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center\">Nelco N4000-13<\/td>\n<td style=\"text-align: center\">3.9<\/td>\n<td style=\"text-align: center\">0.0035<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>C\u00e1c v\u1eadt li\u1ec7u cao c\u1ea5p nh\u01b0 Rogers 4350B v\u00e0 Megtron 6 th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng cho c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao do ti\u1ebfp tuy\u1ebfn t\u1ed5n th\u1ea5t th\u1ea5p v\u00e0 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i, \u0111\u1ea3m b\u1ea3o truy\u1ec1n t\u00edn hi\u1ec7u tuy\u1ec7t v\u1eddi. L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 gi\u1ea3m m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng, c\u00e1c v\u1ea5n \u0111\u1ec1 EMI\/EMC v\u00e0 \u0111\u1ea3m b\u1ea3o truy\u1ec1n t\u00edn hi\u1ec7u t\u1ed1c \u0111\u1ed9 cao \u0111\u00e1ng tin c\u1eady. B\u1eb1ng c\u00e1ch ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 \u0111\u1eb7c t\u00ednh l\u00fd t\u01b0\u1edfng, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 truy\u1ec1n t\u00edn hi\u1ec7u \u0111\u00e1ng tin c\u1eady trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<h3>Nhu c\u1ea7u qu\u1ea3n l\u00fd nhi\u1ec7t<\/h3>\n<p>Qu\u1ea3n l\u00fd nhi\u1ec7t hi\u1ec7u qu\u1ea3 l\u00e0 r\u1ea5t quan tr\u1ecdng trong <strong>thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong>, v\u00ec s\u1ef1 t\u00edch t\u1ee5 nhi\u1ec7t qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 l\u00e0m t\u1ed5n h\u1ea1i <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong>, l\u00e0m h\u1ecfng c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 l\u00e0m suy y\u1ebfu <strong>\u0111\u1ed9 tin c\u1eady t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng<\/strong>. Trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, <strong>nhu c\u1ea7u qu\u1ea3n l\u00fd nhi\u1ec7t<\/strong> l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady v\u00e0 tu\u1ed5i th\u1ecd.<\/p>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 \u0111\u1eb7c t\u00ednh qu\u1ea3n l\u00fd nhi\u1ec7t v\u01b0\u1ee3t tr\u1ed9i l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 tr\u00e1nh qu\u00e1 nhi\u1ec7t, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn suy gi\u1ea3m t\u00edn hi\u1ec7u, <strong>h\u01b0 h\u1ecfng th\u00e0nh ph\u1ea7n<\/strong>, V\u00e0 <strong>s\u1ef1 m\u1ea5t \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng<\/strong>. V\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 cao <strong>d\u1eabn nhi\u1ec7t<\/strong>, \u0111i\u1ec7n tr\u1edf nhi\u1ec7t th\u1ea5p v\u00e0 tuy\u1ec7t v\u1eddi <strong>kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t<\/strong> l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<p>Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i <strong>t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3<\/strong>, t\u1eeb \u0111\u00f3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u, ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng th\u00e0nh ph\u1ea7n v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 tin c\u1eady c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 \u0111\u1eb7c t\u00ednh qu\u1ea3n l\u00fd nhi\u1ec7t tuy\u1ec7t v\u1eddi c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao. B\u1eb1ng c\u00e1ch l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 \u0111\u1eb7c t\u00ednh qu\u1ea3n l\u00fd nhi\u1ec7t v\u01b0\u1ee3t tr\u1ed9i, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao c\u1ee7a h\u1ecd ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3, \u0111\u00e1ng tin c\u1eady v\u00e0 c\u00f3 nguy c\u01a1 h\u01b0 h\u1ecfng linh ki\u1ec7n ho\u1eb7c l\u1ed7i h\u1ec7 th\u1ed1ng \u1edf m\u1ee9c t\u1ed1i thi\u1ec3u.<\/p>\n<p>Qu\u1ea3n l\u00fd nhi\u1ec7t hi\u1ec7u qu\u1ea3 l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u1ed9 tin c\u1eady t\u1ed1i \u01b0u c\u1ee7a h\u1ec7 th\u1ed1ng trong c\u00e1c thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<h2>T\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u1edbi v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p<\/h2>\n<div class=\"body-image-wrapper\" style=\"margin-bottom:20px;\"><img decoding=\"async\" width=\"1006\" height=\"575\" src=\"https:\/\/tryvary.com\/wp-content\/uploads\/2024\/05\/optimizing_performance_with_materials.jpg\" alt=\"t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u1edbi v\u1eadt li\u1ec7u\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Khi n\u00f3i \u0111\u1ebfn vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, <strong>t\u00ednh ch\u1ea5t v\u1eadt ch\u1ea5t<\/strong> \u0111\u00f3ng m\u1ed9t vai tr\u00f2 then ch\u1ed1t. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n v\u00e0 nhi\u1ec7t l\u00fd t\u01b0\u1edfng l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u m\u1ea5t t\u00edn hi\u1ec7u, duy tr\u00ec <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong>v\u00e0 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady.<\/p>\n<h3>Thu\u1ed9c t\u00ednh v\u1eadt ch\u1ea5t<\/h3>\n<p>Trong l\u0129nh v\u1ef1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, r\u1ea5t nhi\u1ec1u \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u h\u1ed9i t\u1ee5 \u0111\u1ec3 quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t t\u00edn hi\u1ec7u, trong \u0111\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i v\u00e0 h\u1ec7 s\u1ed1 ti\u00eau t\u00e1n n\u1ed5i l\u00ean l\u00e0 nh\u1eefng v\u1ea5n \u0111\u1ec1 quan tr\u1ecdng c\u1ea7n c\u00e2n nh\u1eafc. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh thi\u1ebft y\u1ebfu l\u00e0 m\u1ea5u ch\u1ed1t \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau thi\u1ebft k\u1ebf t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<p>C\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u \u1ea3nh h\u01b0\u1edfng s\u00e2u s\u1eafc \u0111\u1ebfn hi\u1ec7u su\u1ea5t m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>H\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i (Dk) v\u00e0 h\u1ec7 s\u1ed1 ti\u00eau t\u00e1n (Df)<\/strong>: \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c m\u1ea5t t\u00edn hi\u1ec7u v\u00e0 ki\u1ec3m so\u00e1t tr\u1edf kh\u00e1ng<\/li>\n<li><strong>T\u00ednh ch\u1ea5t nhi\u1ec7t<\/strong>: \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ea3n nhi\u1ec7t v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a v\u1eadt li\u1ec7u<\/li>\n<li><strong>\u0110\u1ed9 \u1ea9m v\u00e0 kh\u00e1ng h\u00f3a ch\u1ea5t<\/strong>: \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 ng\u0103n ch\u1eb7n s\u1ef1 xu\u1ed1ng c\u1ea5p c\u1ee7a v\u1eadt li\u1ec7u<\/li>\n<li><strong>Hi\u1ec7u su\u1ea5t \u0111i\u1ec7n<\/strong>: \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 ki\u1ec3m so\u00e1t tr\u1edf kh\u00e1ng<\/li>\n<\/ul>\n<h3>Nhu c\u1ea7u t\u1ed1c \u0111\u1ed9 m\u1ea1ch<\/h3>\n<p>T\u1ed1i \u01b0u h\u00f3a <strong>hi\u1ec7u su\u1ea5t m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong> ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u <strong>suy gi\u1ea3m t\u00edn hi\u1ec7u<\/strong>. Vi\u1ec7c kh\u00f4ng ng\u1eebng theo \u0111u\u1ed5i t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u nhanh h\u01a1n \u0111\u00f2i h\u1ecfi c\u00e1c v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd \u0111\u1eb7c bi\u1ec7t. <strong>t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i<\/strong>. M\u1ea1ch t\u1ed1c \u0111\u1ed9 cao y\u00eau c\u1ea7u v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i (Dk) v\u00e0 h\u1ec7 s\u1ed1 ti\u00eau t\u00e1n (Df) th\u1ea5p \u0111\u1ec3 gi\u1ea3m thi\u1ec3u <strong>m\u1ea5t t\u00edn hi\u1ec7u<\/strong> v\u00e0 duy tr\u00ec <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong>.<\/p>\n<p>C\u00e1c v\u1eadt li\u1ec7u c\u00f3 Dk v\u00e0 Df th\u1ea5p, ch\u1eb3ng h\u1ea1n nh\u01b0 Rogers 4350B v\u00e0 Megtron 6, \u0111\u01b0\u1ee3c \u01b0u ti\u00ean s\u1eed d\u1ee5ng cho c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao do kh\u1ea3 n\u0103ng gi\u1ea3m m\u1ea5t t\u00edn hi\u1ec7u v\u00e0 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u. Th\u1eddi gian t\u0103ng gi\u1ea3m c\u1ee7a <strong>t\u1ef7 l\u1ec7 c\u1ea1nh<\/strong> l\u00e0 nh\u1eefng c\u00e2n nh\u1eafc quan tr\u1ecdng khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao v\u00ec ch\u00fang \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u.<\/p>\n<p>L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u th\u00edch h\u1ee3p l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3m <strong>s\u1ef1 ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng<\/strong> v\u00e0 \u0111\u1ecba ch\u1ec9 <strong>Nh\u1eefng th\u00e1ch th\u1ee9c v\u1ec1 EMI\/EMC<\/strong> trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao. B\u1eb1ng c\u00e1ch l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n m\u00f4i tuy\u1ec7t v\u1eddi, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao \u0111\u00e1ng tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<p>Cu\u1ed1i c\u00f9ng, vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n<h3>Kh\u00f3a to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/h3>\n<p>B\u1eb1ng c\u00e1ch nh\u1ea5n m\u1ea1nh t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 t\u1eadn d\u1ee5ng t\u1ed1i \u0111a ti\u1ec1m n\u0103ng c\u1ee7a m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao v\u00ec vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea9n th\u1eadn v\u1eadt li\u1ec7u \u0111i\u1ec7n m\u00f4i \u0111\u00f3ng vai tr\u00f2 thi\u1ebft y\u1ebfu trong vi\u1ec7c duy tr\u00ec \u0111\u1ed9 trung th\u1ef1c c\u1ee7a t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady.<\/p>\n<p>Trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, t\u1ed1i \u01b0u h\u00f3a t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u l\u00e0 r\u1ea5t quan tr\u1ecdng v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady.<\/p>\n<p>\u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u t\u1ed1t nh\u1ea5t, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf ph\u1ea3i \u01b0u ti\u00ean c\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh sau:<\/p>\n<ul>\n<li><strong>L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u \u0111i\u1ec7n m\u00f4i<\/strong>: Ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 ti\u1ebfp tuy\u1ebfn t\u1ed5n th\u1ea5t th\u1ea5p v\u00e0 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i, ch\u1eb3ng h\u1ea1n nh\u01b0 Rogers 4350B v\u00e0 Megtron 6, gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o tr\u1edf kh\u00e1ng \u1ed5n \u0111\u1ecbnh.<\/li>\n<li><strong>T\u00ednh nh\u1ea5t qu\u00e1n tr\u1edf kh\u00e1ng<\/strong>: Duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n v\u1ec1 tr\u1edf kh\u00e1ng v\u00e0 t\u1ed5n th\u1ea5t th\u1ea5p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 truy\u1ec1n t\u00edn hi\u1ec7u hi\u1ec7u qu\u1ea3 trong c\u00e1c thi\u1ebft k\u1ebf PCB t\u1ed1c \u0111\u1ed9 cao.<\/li>\n<li><strong>T\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n t\u1eeb<\/strong>: Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p s\u1ebd n\u00e2ng cao kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n t\u1eeb, gi\u1ea3m c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 \u0111i\u1ec7n v\u00e0 EMI\/EMC.<\/li>\n<li><strong>T\u00ednh to\u00e0n v\u1eb9n c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n<\/strong>: T\u1ed1i \u01b0u h\u00f3a t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u \u0111\u1ea3m b\u1ea3o cung c\u1ea5p \u0111i\u1ec7n n\u0103ng \u0111\u00e1ng tin c\u1eady, gi\u1ea3m nguy c\u01a1 x\u1ea3y ra c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a ngu\u1ed3n \u0111i\u1ec7n.<\/li>\n<\/ul>\n<h2>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>M\u1ea1ch t\u1ed1c \u0111\u1ed9 cao c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean v\u1eadt li\u1ec7u FR4 chi ph\u00ed th\u1ea5p kh\u00f4ng?<\/h3>\n<p>Nhu c\u1ea7u ch\u1ebf t\u1ea1o kh\u00f3 \u0111\u00f2i h\u1ecfi ph\u1ea3i ki\u1ec3m tra s\u1eafc th\u00e1i v\u1ec1 t\u00ednh kh\u1ea3 thi c\u1ee7a vi\u1ec7c x\u00e2y d\u1ef1ng <strong>m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong> v\u1ec1 chi ph\u00ed th\u1ea5p <strong>v\u1eadt li\u1ec7u FR4<\/strong>.<\/p>\n<p>M\u1eb7c d\u00f9 kh\u00f4ng th\u1ec3 ph\u1ee7 nh\u1eadn kh\u1ea3 n\u0103ng chi tr\u1ea3 v\u00e0 t\u00ednh s\u1eb5n c\u00f3 r\u1ed9ng r\u00e3i c\u1ee7a FR4, nh\u01b0ng nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a n\u00f3 li\u00ean quan \u0111\u1ebfn t\u1ed5n th\u1ea5t \u0111i\u1ec7n m\u00f4i, suy gi\u1ea3m t\u00edn hi\u1ec7u v\u00e0 m\u1ea5t \u1ed5n \u0111\u1ecbnh nhi\u1ec7t \u0111\u00f2i h\u1ecfi ph\u1ea3i xem x\u00e9t c\u1ea9n th\u1eadn.<\/p>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng t\u1ed1c \u0111\u1ed9 cao, nh\u1eefng thi\u1ebfu s\u00f3t c\u1ee7a FR4 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong>, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn k\u00e9m l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u1ea1ch hi\u1ec7u su\u1ea5t cao.<\/p>\n<h3>C\u00f3 b\u1ea5t k\u1ef3 l\u1ef1a ch\u1ecdn thay th\u1ebf th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng n\u00e0o cho v\u1eadt li\u1ec7u m\u1ea1ch truy\u1ec1n th\u1ed1ng kh\u00f4ng?<\/h3>\n<p>Khi xem x\u00e9t c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng \u0111\u1ec3 <strong>v\u1eadt li\u1ec7u m\u1ea1ch truy\u1ec1n th\u1ed1ng<\/strong>, nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 kh\u00e1m ph\u00e1 <strong>nh\u1ef1a sinh h\u1ecdc<\/strong>, \u0111\u1ed3ng t\u00e1i ch\u1ebf, v\u00e0 <strong>ch\u1ea5t n\u1ec1n th\u1ef1c v\u1eadt<\/strong>. Nh\u1eefng v\u1eadt li\u1ec7u c\u1ea3i ti\u1ebfn n\u00e0y l\u00e0m gi\u1ea3m t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng trong khi v\u1eabn duy tr\u00ec hi\u1ec7u su\u1ea5t.<\/p>\n<p>V\u00ed d\u1ee5, nh\u1ef1a sinh h\u1ecdc nh\u01b0 axit polylactic (PLA) cung c\u1ea5p gi\u1ea3i ph\u00e1p thay th\u1ebf c\u00f3 th\u1ec3 ph\u00e2n h\u1ee7y sinh h\u1ecdc v\u00e0 t\u00e1i t\u1ea1o cho nh\u1ef1a truy\u1ec1n th\u1ed1ng.<\/p>\n<p>T\u01b0\u01a1ng t\u1ef1, ch\u1ea5t n\u1ec1n t\u1eeb th\u1ef1c v\u1eadt c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb tre ho\u1eb7c m\u00eda c\u00f3 th\u1ec3 thay th\u1ebf v\u1eadt li\u1ec7u FR4 truy\u1ec1n th\u1ed1ng, gi\u1ea3m l\u01b0\u1ee3ng kh\u00ed th\u1ea3i carbon v\u00e0 \u0111\u1ed9c t\u00ednh.<\/p>\n<h3>M\u1ea1ch t\u1ed1c \u0111\u1ed9 cao c\u00f3 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt h\u00e0n \u0111\u1eb7c bi\u1ec7t kh\u00f4ng?<\/h3>\n<p>Tr\u00e1i ng\u01b0\u1ee3c ho\u00e0n to\u00e0n v\u1edbi c\u00e1ch l\u1eafp r\u00e1p m\u1ea1ch truy\u1ec1n th\u1ed1ng, <strong>m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong> \u0111\u00f2i h\u1ecfi s\u1ef1 ch\u00fa \u00fd t\u1ec9 m\u1ec9 \u0111\u1ebfn k\u1ef9 thu\u1eadt h\u00e0n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong>.<\/p>\n<p>Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u00f4ng th\u01b0\u1eddng, m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao y\u00eau c\u1ea7u ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c \u0111\u1ed9 nh\u1edbt, nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u00e0nh ph\u1ea7n t\u1eeb th\u00f4ng c\u1ee7a v\u1eadt h\u00e0n \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 suy gi\u1ea3m t\u00edn hi\u1ec7u.<\/p>\n<p>C\u00e1c k\u1ef9 thu\u1eadt ti\u00ean ti\u1ebfn nh\u01b0 <strong>h\u00e0n n\u00f3ng ch\u1ea3y l\u1ea1i<\/strong> v\u00e0 ph\u00e2n ph\u1ed1i ch\u00ednh x\u00e1c l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u m\u1ea5t t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c \u1ee9ng d\u1ee5ng t\u1ea7n s\u1ed1 cao.<\/p>\n<h3>T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t v\u1eadt li\u1ec7u duy nh\u1ea5t cho c\u1ea3 m\u1ea1ch t\u01b0\u01a1ng t\u1ef1 v\u00e0 k\u1ef9 thu\u1eadt s\u1ed1 kh\u00f4ng?<\/h3>\n<p>Khi thi\u1ebft k\u1ebf c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i c\u00e2n nh\u1eafc vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho c\u1ea3 linh ki\u1ec7n analog v\u00e0 k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n<p>M\u1eb7c d\u00f9 m\u1ed9t v\u1eadt li\u1ec7u duy nh\u1ea5t cho c\u1ea3 hai m\u1ea1ch c\u00f3 v\u1ebb h\u1ea5p d\u1eabn nh\u01b0ng \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i \u01b0u ti\u00ean <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong> V\u00e0 <strong>gi\u1ea3m ti\u1ebfng \u1ed3n<\/strong>.<\/p>\n<p>Trong th\u1ef1c t\u1ebf, c\u00e1c m\u1ea1ch t\u01b0\u01a1ng t\u1ef1 th\u01b0\u1eddng y\u00eau c\u1ea7u <strong>t\u1ed5n th\u1ea5t th\u1ea5p<\/strong>, v\u1eadt li\u1ec7u t\u1ea7n s\u1ed1 cao, trong khi m\u1ea1ch k\u1ef9 thu\u1eadt s\u1ed1 \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb v\u1eadt li\u1ec7u t\u1ed1c \u0111\u1ed9 cao, \u0111\u1ed9 tr\u1ec5 th\u1ea5p.<\/p>\n<p>V\u1eadt li\u1ec7u b\u1ecb x\u00e2m ph\u1ea1m c\u00f3 th\u1ec3 kh\u00f4ng t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t cho c\u1ea3 hai m\u1ea1ch, d\u1eabn \u0111\u1ebfn hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng d\u01b0\u1edbi m\u1ee9c trung b\u00ecnh.<\/p>\n<h3>L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u t\u00e1c \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ebfn vi\u1ec7c che ch\u1eafn nhi\u1ec5u \u0111i\u1ec7n t\u1eeb?<\/h3>\n<p>B\u1ea1n c\u00f3 bi\u1ebft r\u1eb1ng nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI) c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t m\u1ea1ch t\u1edbi 30%?<\/p>\n<p>Khi n\u00f3i \u0111\u1ebfn vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho <strong>m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong>&#44; <strong>Che ch\u1eafn EMI<\/strong> l\u00e0 m\u1ed9t s\u1ef1 c\u00e2n nh\u1eafc quan tr\u1ecdng. V\u1eadt li\u1ec7u l\u00fd t\u01b0\u1edfng ph\u1ea3i c\u00f3 \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n, \u0111\u1ed9 th\u1ea5m cao v\u00e0 <strong>hi\u1ec7u qu\u1ea3 che ch\u1eafn t\u1eeb t\u00ednh<\/strong>.<\/p>\n<p>V\u00ed d\u1ee5, \u0111\u1ed3ng l\u00e0 m\u1ed9t l\u00e1 ch\u1eafn EMI tuy\u1ec7t v\u1eddi do t\u00ednh d\u1eabn \u0111i\u1ec7n v\u00e0 \u0111\u1ed9 th\u1ea5m cao. Tuy nhi\u00ean, c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nh\u01b0 mu-kim lo\u1ea1i ho\u1eb7c ferit c\u00f3 th\u1ec3 ph\u00f9 h\u1ee3p h\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3.<\/p>\n<p>C\u1ea9n th\u1eadn <strong>l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u<\/strong> l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u EMI v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t m\u1ea1ch \u0111\u00e1ng tin c\u1eady.<\/p>","protected":false},"excerpt":{"rendered":"<p>Ch\u00eca kh\u00f3a \u0111\u1ec3 thi\u1ebft k\u1ebf c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao \u0111\u00e1ng tin c\u1eady n\u1eb1m \u1edf vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u t\u1ed1i \u01b0u, nh\u01b0ng v\u1eadt li\u1ec7u n\u00e0o chi\u1ebfm \u01b0u th\u1ebf?<\/p>","protected":false},"author":9,"featured_media":2019,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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Lau","author_link":"https:\/\/tryvary.com\/vi\/author\/wsbpmbzuog4q\/"},"uagb_comment_info":0,"uagb_excerpt":"Key to designing reliable high-speed circuits lies in selecting the optimal material&#44; but which one reigns supreme&#63;","_links":{"self":[{"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts\/2020","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/comments?post=2020"}],"version-history":[{"count":1,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts\/2020\/revisions"}],"predecessor-version":[{"id":2480,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts\/2020\/revisions\/2480"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/media\/2019"}],"wp:attachment":[{"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/media?parent=2020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/categories?post=2020"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/tags?post=2020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}