{"id":2194,"date":"2024-07-30T12:41:52","date_gmt":"2024-07-30T12:41:52","guid":{"rendered":"https:\/\/tryvary.com\/?p=2194"},"modified":"2024-07-30T12:41:52","modified_gmt":"2024-07-30T12:41:52","slug":"pcb-design-rule-checks-for-high-speed-circuits","status":"publish","type":"post","link":"https:\/\/tryvary.com\/vi\/kiem-tra-quy-tac-thiet-ke-pcb-cho-mach-toc-do-cao\/","title":{"rendered":"7 ki\u1ec3m tra quy t\u1eafc thi\u1ebft k\u1ebf c\u1ea7n thi\u1ebft cho m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao"},"content":{"rendered":"<p>Thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao \u0111\u00f2i h\u1ecfi ph\u1ea3i tu\u00e2n th\u1ee7 <strong>ki\u1ec3m tra quy t\u1eafc thi\u1ebft k\u1ebf thi\u1ebft y\u1ebfu<\/strong> \u0111\u1ea3m b\u1ea3o <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong> V\u00e0 <strong>hi\u1ec7u su\u1ea5t cao \u0111i\u1ec3m<\/strong>. B\u1ea3y ki\u1ec3m tra quan tr\u1ecdng bao g\u1ed3m c\u00e1c r\u00e0ng bu\u1ed9c ph\u00e2n \u0111o\u1ea1n song song, c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 \u0111\u1ed9 d\u00e0i v\u1ec1 th\u1eddi gian, <strong>\u0111\u1ed9 d\u00e0i ph\u00f9 h\u1ee3p<\/strong> \u0111\u1ec3 \u0111\u1ed3ng b\u1ed9 h\u00f3a, gi\u1edbi h\u1ea1n \u0111\u1ed9 d\u00e0i s\u01a1 khai chu\u1ed7i n\u1ed1i ti\u1ebfp, th\u00f4ng qua v\u1ecb tr\u00ed b\u00ean d\u01b0\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n SMD, t\u1ed1i \u0111a th\u00f4ng qua s\u1ed1 l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 d\u00e0i s\u01a1 khai, \u0111\u1ed3ng th\u1eddi t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng d\u1eabn tr\u1edf l\u1ea1i cho t\u00edn hi\u1ec7u. Nh\u1eefng ki\u1ec3m tra n\u00e0y ng\u0103n ng\u1eeba s\u1ef1 gh\u00e9p n\u1ed1i kh\u00f4ng mong mu\u1ed1n, suy gi\u1ea3m t\u00edn hi\u1ec7u v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 th\u1eddi gian, \u0111\u1ea3m b\u1ea3o <strong>ho\u1ea1t \u0111\u1ed9ng m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao \u0111\u00e1ng tin c\u1eady<\/strong>. B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng nh\u1eefng nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n n\u00e0y, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u nh\u1eefng c\u1ea1m b\u1eaby ti\u1ec1m \u1ea9n v\u00e0 \u0111\u1ea3m b\u1ea3o m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao c\u1ee7a h\u1ecd \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n b\u1eaft bu\u1ed9c, m\u1edf \u0111\u01b0\u1eddng cho hi\u1ec7u su\u1ea5t cao nh\u1ea5t v\u00e0 ch\u1ee9c n\u0103ng \u0111\u00e1ng tin c\u1eady.<\/p>\n<h2>B\u00e0i h\u1ecdc ch\u00ednh<\/h2>\n<ul>\n<li>Th\u1ef1c hi\u1ec7n c\u00e1c r\u00e0ng bu\u1ed9c ph\u00e2n \u0111o\u1ea1n song song \u0111\u1ec3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u v\u00e0 ng\u0103n ch\u1eb7n s\u1ef1 gh\u00e9p n\u1ed1i v\u00e0 nhi\u1ec5u kh\u00f4ng mong mu\u1ed1n.<\/li>\n<li>Th\u1ef1c thi c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 \u0111\u1ed9 d\u00e0i \u0111\u1ed1i v\u1edbi th\u1eddi gian \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 tr\u1ec5 truy\u1ec1n v\u00e0 ng\u0103n ng\u1eeba c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 th\u1eddi gian.<\/li>\n<li>\u0110\u1ea3m b\u1ea3o \u0111\u1ed9 d\u00e0i ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111\u1ed3ng b\u1ed9 h\u00f3a nh\u1eb1m \u0111\u1ea3m b\u1ea3o truy\u1ec1n t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a v\u00e0 ng\u0103n ng\u1eeba l\u1ed7i v\u1ec1 th\u1eddi gian.<\/li>\n<li>Gi\u1edbi h\u1ea1n \u0111\u1ed9 d\u00e0i cu\u1ed1ng chu\u1ed7i n\u1ed1i ti\u1ebfp \u0111\u1ec3 tr\u00e1nh suy gi\u1ea3m t\u00edn hi\u1ec7u v\u00e0 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u.<\/li>\n<li>Qu\u1ea3n l\u00fd \u0111\u01b0\u1eddng d\u1eabn tr\u1edf l\u1ea1i m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 \u0111\u1ec3 gi\u1ea3m nhi\u1ec5u \u0111i\u1ec7n t\u1eeb v\u00e0 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng m\u1ea1ch \u0111\u00e1ng tin c\u1eady.<\/li>\n<\/ul>\n<h2>R\u00e0ng bu\u1ed9c ph\u00e2n \u0111o\u1ea1n song song<\/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\/BlHLmQ2HO1w\" 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>Trong thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, <strong>h\u1ea1n ch\u1ebf ph\u00e2n \u0111o\u1ea1n song song<\/strong> \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c duy tr\u00ec <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong> b\u1eb1ng c\u00e1ch ch\u1ec9 \u0111\u1ecbnh kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u c\u1ea7n thi\u1ebft gi\u1eefa c\u00e1c \u0111o\u1ea1n \u0111\u01b0\u1eddng song song. H\u1ea1n ch\u1ebf n\u00e0y r\u1ea5t c\u1ea7n thi\u1ebft trong vi\u1ec7c ng\u0103n ng\u1eeba <strong>s\u1ef1 gh\u00e9p n\u1ed1i v\u00e0 nhi\u1ec5u kh\u00f4ng mong mu\u1ed1n<\/strong> gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng li\u1ec1n k\u1ec1, \u0111\u1ea3m b\u1ea3o <strong>\u0111\u1ecbnh tuy\u1ebfn v\u00e0 kho\u1ea3ng c\u00e1ch ch\u00ednh x\u00e1c<\/strong> cho c\u00e1c \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u quan tr\u1ecdng.<\/p>\n<p>B\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh c\u00e1c r\u00e0ng bu\u1ed9c ph\u00e2n \u0111o\u1ea1n song song, ng\u01b0\u1eddi thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 th\u1ef1c thi <strong>ki\u1ec3m tra kho\u1ea3ng c\u00e1ch v\u00e0 l\u1edbp ch\u00ednh x\u00e1c<\/strong>, nh\u1edd \u0111\u00f3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<p>Trong thi\u1ebft k\u1ebf PCB, c\u00e1c r\u00e0ng bu\u1ed9c ph\u00e2n \u0111o\u1ea1n song song l\u00e0 m\u1ed9t kh\u00eda c\u1ea1nh quan tr\u1ecdng c\u1ee7a vi\u1ec7c ki\u1ec3m tra quy t\u1eafc thi\u1ebft k\u1ebf (DRC). B\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp c\u00e1c r\u00e0ng bu\u1ed9c c\u1ee5 th\u1ec3 cho vi\u1ec7c ki\u1ec3m tra l\u1edbp v\u00e0 kho\u1ea3ng c\u00e1ch song song, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng <strong>thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong> \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u c\u1ea7n thi\u1ebft. Nh\u1eefng r\u00e0ng bu\u1ed9c n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 lo\u1ea1i tr\u1eeb c\u00e1c l\u01b0\u1edbi c\u1eb7p vi sai \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn, cung c\u1ea5p th\u00eam m\u1ed9t l\u1edbp ch\u00ednh x\u00e1c trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf.<\/p>\n<h2>R\u00e0ng bu\u1ed9c v\u1ec1 \u0111\u1ed9 d\u00e0i cho th\u1eddi gian<\/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\/timing_precision_through_length.jpg\" alt=\"\u0111\u1ed9 ch\u00ednh x\u00e1c v\u1ec1 th\u1eddi gian th\u00f4ng qua chi\u1ec1u d\u00e0i\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>H\u1ea1n ch\u1ebf v\u1ec1 \u0111\u1ed9 d\u00e0i cho <strong>ch\u01a1i th\u1eddi gian<\/strong> m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, v\u00ec ch\u00fang \u0111i\u1ec1u ch\u1ec9nh <strong>\u0111\u1ed9 tr\u1ec5 lan truy\u1ec1n<\/strong> gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n b\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp c\u00e1c gi\u1edbi h\u1ea1n ch\u00ednh x\u00e1c v\u1ec1 <strong>\u0111\u1ed9 d\u00e0i v\u1ebft t\u00edn hi\u1ec7u<\/strong> \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 th\u1eddi gian v\u00e0 \u0111\u1ea3m b\u1ea3o <strong>truy\u1ec1n t\u00edn hi\u1ec7u \u0111\u1ed3ng b\u1ed9<\/strong>. B\u1eb1ng c\u00e1ch th\u1ef1c thi c\u00e1c r\u00e0ng bu\u1ed9c n\u00e0y, ng\u01b0\u1eddi thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 x\u00e1c nh\u1eadn t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u v\u00e0 ng\u0103n ch\u1eb7n <strong>l\u1ed7i th\u1eddi gian<\/strong> \u0111i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0m t\u1ed5n h\u1ea1i \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a <strong>m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong>.<\/p>\n<p>\u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf \u0111\u1eb7t gi\u1edbi h\u1ea1n \u0111\u1ed9 d\u00e0i t\u1ed1i thi\u1ec3u v\u00e0 t\u1ed1i \u0111a cho d\u1ea5u v\u1ebft t\u00edn hi\u1ec7u, \u0111\u1ea3m b\u1ea3o r\u1eb1ng \u0111\u1ed9 tr\u1ec5 truy\u1ec1n t\u00edn hi\u1ec7u n\u1eb1m trong y\u00eau c\u1ea7u v\u1ec1 th\u1eddi gian \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh. Vi\u1ec7c ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c \u0111\u1ed9 d\u00e0i v\u1ebft t\u00edn hi\u1ec7u n\u00e0y cho ph\u00e9p truy\u1ec1n t\u00edn hi\u1ec7u \u0111\u1ed3ng b\u1ed9, gi\u1ea3m nguy c\u01a1 l\u1ed7i \u0111\u1ecbnh th\u1eddi v\u00e0 \u0111\u1ed9 l\u1ec7ch t\u00edn hi\u1ec7u. C\u00e1c c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c th\u1ef1c thi c\u00e1c gi\u1edbi h\u1ea1n v\u1ec1 \u0111\u1ed9 d\u00e0i, gi\u1ea3m thi\u1ec3u c\u00e1c l\u1ed7i th\u1ee7 c\u00f4ng v\u00e0 \u0111\u1ea3m b\u1ea3o ki\u1ec3m so\u00e1t th\u1eddi gian ch\u00ednh x\u00e1c.<\/p>\n<h2>\u0110\u1ed9 d\u00e0i ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111\u1ed3ng b\u1ed9 h\u00f3a<\/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\/perfectly_synchronized_sound_waves.jpg\" alt=\"s\u00f3ng \u00e2m \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 ho\u00e0n h\u1ea3o\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>\u0110\u1ea3m b\u1ea3o <strong>truy\u1ec1n t\u00edn hi\u1ec7u \u0111\u1ed3ng b\u1ed9<\/strong> trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, \u0111\u1ed9 d\u00e0i ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft. Ch\u00fang \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c t\u00edn hi\u1ec7u \u0111\u1ebfn \u0111\u1ed3ng th\u1eddi, ng\u0103n ng\u1eeba <strong>l\u1ed7i th\u1eddi gian v\u00e0 \u0111\u1ed9 l\u1ec7ch t\u00edn hi\u1ec7u<\/strong>. Trong c\u00e1c thi\u1ebft k\u1ebf t\u1ed1c \u0111\u1ed9 cao, \u0111\u1ed9 d\u00e0i ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong> v\u00e0 gi\u1ea3m \u0111\u1ed9 l\u1ec7ch.<\/p>\n<p>B\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp \u0111\u1ed9 d\u00e0i tham chi\u1ebfu v\u00e0 dung sai, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i v\u1edbi chi ph\u00ed t\u1ed1i thi\u1ec3u. <strong>ph\u1ea3n x\u1ea1 t\u00edn hi\u1ec7u v\u00e0 l\u1ed7i th\u1eddi gian<\/strong>. Tu\u00e2n th\u1ee7 <strong>quy t\u1eafc \u0111\u1ed9 d\u00e0i ph\u00f9 h\u1ee3p<\/strong> l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft cho c\u00e1c c\u1eb7p vi sai v\u00e0 bus t\u00edn hi\u1ec7u, trong \u0111\u00f3 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u l\u00e0 t\u1ed1i quan tr\u1ecdng. Trong c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng n\u00e0y, \u0111\u1ed9 d\u00e0i ph\u00f9 h\u1ee3p s\u1ebd ng\u0103n ng\u1eeba c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 th\u1eddi gian t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00edn hi\u1ec7u \u0111\u1ebfn c\u00f9ng l\u00fac, duy tr\u00ec \u0111\u1ed3ng b\u1ed9 h\u00f3a.<\/p>\n<h2>Gi\u1edbi h\u1ea1n \u0111\u1ed9 d\u00e0i s\u01a1 khai c\u1ee7a chu\u1ed7i Daisy<\/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\/limitations_of_daisy_chain.jpg\" alt=\"h\u1ea1n ch\u1ebf c\u1ee7a d\u00e2y chuy\u1ec1n c\u00fac\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>C\u1ea5u tr\u00fac li\u00ean k\u1ebft chu\u1ed7i Daisy, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong <strong>m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong>, y\u00eau c\u1ea7u t\u1ec9 m\u1ec9 <strong>qu\u1ea3n l\u00fd \u0111\u1ed9 d\u00e0i s\u01a1 khai<\/strong> \u0111\u1ec3 ng\u0103n ch\u1eb7n <strong>suy gi\u1ea3m t\u00edn hi\u1ec7u<\/strong> v\u00e0 \u0111\u1ea3m b\u1ea3o <strong>truy\u1ec1n t\u00edn hi\u1ec7u \u0111\u00e1ng tin c\u1eady<\/strong>. Trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, gi\u1edbi h\u1ea1n \u0111\u1ed9 d\u00e0i c\u1ee7a s\u01a1 \u0111\u1ed3 chu\u1ed7i n\u1ed1i ti\u1ebfp l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong>. Quy t\u1eafc \u0111\u1ed9 d\u00e0i cu\u1ed1ng chu\u1ed7i c\u00fac \u0111\u1eb7t ra \u0111\u1ed9 d\u00e0i cu\u1ed1ng t\u1ed1i \u0111a cho ph\u00e9p \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 suy gi\u1ea3m v\u00e0 ph\u1ea3n x\u1ea1 t\u00edn hi\u1ec7u, \u0111\u1ea3m b\u1ea3o truy\u1ec1n t\u00edn hi\u1ec7u hi\u1ec7u qu\u1ea3. B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 nh\u1eefng gi\u1edbi h\u1ea1n n\u00e0y, c\u00e1c thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c <strong>hi\u1ec7u su\u1ea5t cao \u0111i\u1ec3m<\/strong> v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c.<\/p>\n<p>Trong c\u00e1c c\u00f4ng c\u1ee5 thi\u1ebft k\u1ebf PCB, \u0111\u1ecbnh ngh\u0129a quy t\u1eafc ch\u1ec9 \u0111\u1ecbnh \u0111\u1ed9 d\u00e0i nh\u00e1nh t\u1ed1i \u0111a \u0111\u1ec3 truy\u1ec1n t\u00edn hi\u1ec7u hi\u1ec7u qu\u1ea3. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c duy tr\u00ec v\u00e0 ph\u1ea3n x\u1ea1 \u0111\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u. B\u1eb1ng c\u00e1ch gi\u1edbi h\u1ea1n \u0111\u1ed9 d\u00e0i c\u1ee7a s\u01a1 khai trong <strong>c\u1ea5u tr\u00fac li\u00ean k\u1ebft chu\u1ed7i hoa c\u00fac<\/strong>, ng\u0103n ch\u1eb7n s\u1ef1 suy gi\u1ea3m t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o vi\u1ec7c truy\u1ec1n t\u00edn hi\u1ec7u \u0111\u00e1ng tin c\u1eady. K\u1ebft qu\u1ea3 l\u00e0, c\u00e1c thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1edf m\u1ee9c t\u1ed1t nh\u1ea5t, mang l\u1ea1i hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c cao h\u01a1n.<\/p>\n<h2>Th\u00f4ng qua v\u1ecb tr\u00ed d\u01b0\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n SMD<\/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\/placement_under_smd_components.jpg\" alt=\"v\u1ecb tr\u00ed d\u01b0\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n smd\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>TRONG <strong>thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong>&#44; <strong>\u0111\u1eb7t vias m\u1ed9t c\u00e1ch chi\u1ebfn l\u01b0\u1ee3c<\/strong> c\u00e1c th\u00e0nh ph\u1ea7n trong thi\u1ebft b\u1ecb g\u1eafn tr\u00ean b\u1ec1 m\u1eb7t (SMD) l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a kh\u00f4ng gian \u0111\u1ecbnh tuy\u1ebfn, n\u00e2ng cao <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong>, v\u00e0 \u0111\u1ea3m b\u1ea3o <strong>ch\u1ee9c n\u0103ng PCB \u0111\u00e1ng tin c\u1eady<\/strong>. V\u1ecb tr\u00ed th\u00f4ng qua c\u00e1c b\u1ed9 ph\u1eadn SMD \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ng\u0103n ng\u1eeba \u0111o\u1ea3n m\u1ea1ch \u0111i\u1ec7n ho\u1eb7c nhi\u1ec5u t\u00edn hi\u1ec7u, nh\u1eefng \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao. V\u1ecb tr\u00ed th\u00edch h\u1ee3p \u0111\u1ea3m b\u1ea3o qu\u1ea3n l\u00fd nhi\u1ec7t hi\u1ec7u qu\u1ea3 v\u00e0 ch\u1ee9c n\u0103ng PCB \u0111\u00e1ng tin c\u1eady. C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc v\u1ec1 k\u00edch th\u01b0\u1edbc, cao \u0111\u1ed9 v\u00e0 kho\u1ea3ng tr\u1ed1ng \u0111\u1ec3 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 s\u1ea3n xu\u1ea5t v\u00e0 suy gi\u1ea3m hi\u1ec7u su\u1ea5t.<\/p>\n<p>Trong thi\u1ebft k\u1ebf t\u1ed1c \u0111\u1ed9 cao, th\u00f4ng qua v\u1ecb tr\u00ed b\u00ean d\u01b0\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n SMD s\u1ebd t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u tr\u1edf l\u1ea1i, <strong>d\u1ea5u v\u1ebft chi\u1ec1u r\u1ed9ng<\/strong>, V\u00e0 <strong>th\u00f4ng qua chi\u1ec1u d\u00e0i s\u01a1 khai<\/strong>. M\u1ed9t thi\u1ebft k\u1ebf t\u1ed1t <strong>th\u00f4ng qua chi\u1ebfn l\u01b0\u1ee3c v\u1ecb tr\u00ed<\/strong> \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00edn hi\u1ec7u t\u1ed1c \u0111\u1ed9 cao \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn hi\u1ec7u qu\u1ea3, gi\u1ea3m thi\u1ec3u <strong>suy gi\u1ea3m t\u00edn hi\u1ec7u<\/strong> v\u00e0 nhi\u1ec5u xuy\u00ean \u00e2m. <strong>C\u1eb7p vi ph\u00e2n<\/strong>V\u00ed d\u1ee5: y\u00eau c\u1ea7u c\u1ea9n th\u1eadn v\u1ec1 v\u1ecb tr\u00ed \u0111\u1ec3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u.<\/p>\n<p>C\u00e1c c\u00f4ng c\u1ee5 Ki\u1ec3m tra Quy t\u1eafc Thi\u1ebft k\u1ebf (DRC) c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh c\u00e1c v\u1ea5n \u0111\u1ec1 ti\u1ec1m \u1ea9n khi b\u1ed1 tr\u00ed b\u00ean d\u01b0\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n SMD, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady. B\u1eb1ng c\u00e1ch tu\u00e2n theo c\u00e1c h\u01b0\u1edbng d\u1eabn \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng th\u00f4ng qua vi\u1ec7c \u0111\u1eb7t b\u00ean d\u01b0\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n SMD kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<h2>S\u1ed1 l\u01b0\u1ee3ng Via t\u1ed1i \u0111a v\u00e0 \u0111\u1ed9 d\u00e0i s\u01a1 khai<\/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_signal_integrity_design.jpg\" alt=\"t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>B\u1eb1ng c\u00e1ch gi\u1edbi h\u1ea1n s\u1ed1 l\u01b0\u1ee3ng vias trong \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 tr\u1edf kh\u00e1ng v\u00e0 <strong>suy gi\u1ea3m t\u00edn hi\u1ec7u<\/strong>, nh\u1edd \u0111\u00f3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u00edn hi\u1ec7u t\u1ed1c \u0111\u1ed9 cao. C\u00e1c <strong>Quy t\u1eafc \u0111\u1ebfm s\u1ed1 l\u01b0\u1ee3ng t\u1ed1i \u0111a<\/strong> l\u00e0 m\u1ed9t quy tr\u00ecnh ki\u1ec3m tra quy t\u1eafc thi\u1ebft k\u1ebf thi\u1ebft y\u1ebfu nh\u1eb1m th\u1ef1c thi gi\u1edbi h\u1ea1n n\u00e0y, \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u trong <strong>m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong>. Tu\u00e2n th\u1ee7 quy t\u1eafc n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ch\u1eb7n <strong>ph\u1ea3n x\u1ea1 t\u00edn hi\u1ec7u<\/strong> v\u00e0 suy tho\u00e1i, c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<p>Ngo\u00e0i vi\u1ec7c ki\u1ec3m so\u00e1t s\u1ed1 l\u01b0\u1ee3ng th\u00f4ng qua, <strong>Quy t\u1eafc \u0111\u1ed9 d\u00e0i s\u01a1 khai<\/strong> l\u00e0 m\u1ed9t quy t\u1eafc ki\u1ec3m tra quy t\u1eafc thi\u1ebft k\u1ebf quan tr\u1ecdng kh\u00e1c nh\u1eb1m \u0111\u1eb7t ra c\u00e1c r\u00e0ng bu\u1ed9c v\u1ec1 \u0111\u1ed9 d\u00e0i c\u1ee7a c\u00e1c \u0111o\u1ea1n trong \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u. B\u1eb1ng c\u00e1ch gi\u1ea3m thi\u1ec3u \u0111\u1ed9 d\u00e0i cu\u1ed1ng, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 gi\u1ea3m ph\u1ea3n x\u1ea1 t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o <strong>\u0111i\u1ec1u khi\u1ec3n tr\u1edf kh\u00e1ng<\/strong>, nh\u1edd \u0111\u00f3 duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<p>Qu\u1ea3n l\u00fd \u0111\u00fang c\u00e1ch th\u00f4ng qua s\u1ed1 l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 d\u00e0i g\u1ed1c l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 <strong>th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt thi\u1ebft k\u1ebf<\/strong>. B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c b\u01b0\u1edbc ki\u1ec3m tra quy t\u1eafc thi\u1ebft k\u1ebf n\u00e0y v\u00e0o quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a m\u00ecnh, 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 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n hi\u1ec7u su\u1ea5t c\u1ea7n thi\u1ebft, t\u1eeb \u0111\u00f3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n<h2>T\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng d\u1eabn tr\u1edf l\u1ea1i cho t\u00edn hi\u1ec7u<\/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\/signal_return_path_optimization.jpg\" alt=\"t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u tr\u1edf l\u1ea1i\" style=\"aspect-ratio: 16\/9;\"><\/div>\n<p>Khi t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng d\u1eabn tr\u1edf l\u1ea1i cho t\u00edn hi\u1ec7u trong m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, ph\u1ea3i xem x\u00e9t c\u1ea9n th\u1eadn <strong>h\u00ecnh h\u1ecdc \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u<\/strong> \u0111\u1ec3 gi\u1ea3m thi\u1ec3u di\u1ec7n t\u00edch v\u00f2ng l\u1eb7p v\u00e0 gi\u1ea3m ti\u1ebfng \u1ed3n.<\/p>\n<p>Hi\u1ec7u qu\u1ea3 <strong>qu\u1ea3n l\u00fd \u0111\u01b0\u1eddng d\u1eabn tr\u1edf l\u1ea1i<\/strong> l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1eddng d\u1eabn tr\u1edf kh\u00e1ng th\u1ea5p v\u00e0 li\u00ean t\u1ee5c cho d\u00f2ng \u0111i\u1ec7n tr\u1edf l\u1ea1i, t\u1eeb \u0111\u00f3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u.<\/p>\n<h3>H\u00ecnh h\u1ecdc \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u<\/h3>\n<p>T\u1ed1i \u01b0u h\u00f3a <strong>\u0111\u01b0\u1eddng d\u1eabn tr\u1edf l\u1ea1i<\/strong> cho t\u00edn hi\u1ec7u l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft trong thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao v\u00ec n\u00f3 cho ph\u00e9p gi\u1ea3m nhi\u1ec5u \u0111i\u1ec7n t\u1eeb v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u. <strong>H\u00ecnh h\u1ecdc \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u<\/strong> \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 t\u1ed1i \u01b0u h\u00f3a n\u00e0y.<\/p>\n<p>B\u1eb1ng c\u00e1ch thi\u1ebft k\u1ebf c\u00e1c \u0111\u01b0\u1eddng d\u1eabn ph\u1ea3n h\u1ed3i \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 cung c\u1ea5p m\u1ed9t <strong>\u0111\u01b0\u1eddng d\u1eabn tr\u1edf kh\u00e1ng th\u1ea5p<\/strong> cho d\u00f2ng \u0111i\u1ec7n tr\u1edf l\u1ea1i, gi\u1ea3m thi\u1ec3u s\u1ef1 suy gi\u1ea3m t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao. Duy tr\u00ec m\u1ed9t l\u1ed9 tr\u00ecnh quay tr\u1edf l\u1ea1i nh\u1ea5t qu\u00e1n l\u00e0 \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng \u0111\u1ec3 gi\u1ea3m <strong>ph\u1ea3n x\u1ea1 t\u00edn hi\u1ec7u<\/strong> V\u00e0 <strong>xuy\u00ean \u00e2m<\/strong> trong c\u00e1c thi\u1ebft k\u1ebf t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<p>Ngo\u00e0i ra, c\u00e1c \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u \u0111\u1ecbnh tuy\u1ebfn g\u1ea7n v\u1edbi \u0111\u01b0\u1eddng d\u1eabn tr\u1edf v\u1ec1 c\u1ee7a ch\u00fang s\u1ebd gi\u1ea3m <strong>\u0111\u1ed9 t\u1ef1 c\u1ea3m v\u00f2ng l\u1eb7p<\/strong>, cu\u1ed1i c\u00f9ng l\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao. H\u00ecnh d\u1ea1ng \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf t\u1ed1t l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 gi\u1ea3m thi\u1ec3u nhi\u1ec5u \u0111i\u1ec7n t\u1eeb, \u0111\u1ea3m b\u1ea3o c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<h3>Qu\u1ea3n l\u00fd \u0111\u01b0\u1eddng d\u1eabn tr\u1edf l\u1ea1i<\/h3>\n<p>Qu\u1ea3n l\u00fd \u0111\u01b0\u1eddng d\u1eabn tr\u1edf l\u1ea1i hi\u1ec7u qu\u1ea3 l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft trong thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, v\u00ec n\u00f3 cung c\u1ea5p \u0111\u01b0\u1eddng d\u1eabn tr\u1edf kh\u00e1ng th\u1ea5p cho d\u00f2ng ph\u1ea3n h\u1ed3i t\u00edn hi\u1ec7u, do \u0111\u00f3 l\u00e0m gi\u1ea3m <strong>nhi\u1ec5u \u0111i\u1ec7n t\u1eeb<\/strong> V\u00e0 <strong>\u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong>. <strong>T\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng d\u1eabn tr\u1edf l\u1ea1i<\/strong> li\u00ean quan \u0111\u1ebfn vi\u1ec7c t\u1ed1i \u0111a h\u00f3a m\u1ed9t c\u00e1ch li\u00ean t\u1ee5c v\u00e0 <strong>\u0111\u01b0\u1eddng tr\u1edf v\u1ec1 c\u00f3 \u0111\u1ed9 t\u1ef1 c\u1ea3m th\u1ea5p<\/strong> v\u00ec <strong>t\u00edn hi\u1ec7u t\u1ed1c \u0111\u1ed9 cao<\/strong>, \u0111\u00e2y l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u.<\/p>\n<p>M\u1eb7t \u0111\u1ea5t \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c cung c\u1ea5p \u0111\u01b0\u1eddng quay tr\u1edf l\u1ea1i hi\u1ec7u qu\u1ea3 cho d\u00f2ng t\u00edn hi\u1ec7u, cho ph\u00e9p ch\u00fang quay tr\u1edf l\u1ea1i ngu\u1ed3n v\u1edbi tr\u1edf kh\u00e1ng t\u1ed1i thi\u1ec3u. Vi ph\u1ea1m trong qu\u1ea3n l\u00fd \u0111\u01b0\u1eddng h\u1ed3i h\u01b0\u01a1ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn <strong>m\u00e9o t\u00edn hi\u1ec7u v\u00e0 suy gi\u1ea3m hi\u1ec7u su\u1ea5t<\/strong> trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>\n<p>B\u1eb1ng c\u00e1ch \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1eddng tr\u1edf v\u1ec1 c\u00f3 tr\u1edf kh\u00e1ng th\u1ea5p, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 gi\u1ea3m nhi\u1ec5u \u0111i\u1ec7n t\u1eeb v\u00e0 nhi\u1ec5u xuy\u00ean \u00e2m, t\u1eeb \u0111\u00f3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u. Qu\u1ea3n l\u00fd \u0111\u01b0\u1eddng d\u1eabn tr\u1edf l\u1ea1i th\u00edch h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 suy gi\u1ea3m t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng m\u1ea1ch \u0111\u00e1ng tin c\u1eady.<\/p>\n<p>Trong thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn vi\u1ec7c qu\u1ea3n l\u00fd \u0111\u01b0\u1eddng h\u1ed3i l\u01b0u \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro <strong>v\u1ea5n \u0111\u1ec1 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong>.<\/p>\n<h2>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>Nh\u1eefng c\u00e2n nh\u1eafc cho thi\u1ebft k\u1ebf t\u1ed1c \u0111\u1ed9 cao l\u00e0 g\u00ec?<\/h3>\n<p>Khi thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, nh\u1eefng c\u00e2n nh\u1eafc quan tr\u1ecdng bao g\u1ed3m:<\/p>\n<ul>\n<li>\u0110\u1ecbnh tuy\u1ebfn tr\u1edf kh\u00e1ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t<\/li>\n<li>Qu\u1ea3n l\u00fd to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/li>\n<li>Gi\u1ea3m thi\u1ec3u nhi\u1ec5u xuy\u00ean \u00e2m \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t cao nh\u1ea5t<\/li>\n<\/ul>\n<p>V\u1ecb tr\u00ed th\u00e0nh ph\u1ea7n th\u00edch h\u1ee3p, thi\u1ebft k\u1ebf x\u1ebfp ch\u1ed3ng l\u1edbp v\u00e0 ki\u1ec3m so\u00e1t tr\u1edf kh\u00e1ng l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft. Ngo\u00e0i ra, \u0111\u1ecbnh tuy\u1ebfn c\u1eb7p vi sai, kh\u1edbp \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u v\u00e0 tr\u00e1nh \u0111\u1ecbnh tuy\u1ebfn song song c\u1ee7a \u0111\u01b0\u1eddng truy\u1ec1n t\u1ed1c \u0111\u1ed9 cao l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n<p>C\u1ea9n th\u1eadn trong vi\u1ec7c b\u1ed1 tr\u00ed v\u00e0 gi\u1ea3m thi\u1ec3u \u0111\u1ed9 t\u1ef1 c\u1ea3m c\u0169ng \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>\u0110i\u1ec1u quan tr\u1ecdng \u0111\u1ed1i v\u1edbi thi\u1ebft k\u1ebf t\u1ed1c \u0111\u1ed9 cao l\u00e0 g\u00ec?<\/h3>\n<p>B\u1ea1n c\u00f3 bi\u1ebft r\u1eb1ng <strong>m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao<\/strong> ho\u1ea1t \u0111\u1ed9ng tr\u00ean 1 GHz c\u00f3 th\u1ec3 tr\u1ea3i nghi\u1ec7m l\u00ean t\u1edbi 50% <strong>suy gi\u1ea3m t\u00edn hi\u1ec7u<\/strong> do thi\u1ebft k\u1ebf k\u00e9m?<\/p>\n<p>\u0110\u1ed1i v\u1edbi thi\u1ebft k\u1ebf t\u1ed1c \u0111\u1ed9 cao, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1eddng quay tr\u1edf l\u1ea1i r\u00f5 r\u00e0ng tr\u00ean m\u1eb7t ph\u1eb3ng tham chi\u1ebfu, gi\u1ea3m thi\u1ec3u vias v\u00e0 th\u1ef1c hi\u1ec7n thi\u1ebft k\u1ebf x\u1ebfp ch\u1ed3ng ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u l\u1edbp m\u1eb7t ph\u1eb3ng n\u1ec1n.<\/p>\n<p>Nh\u1eefng c\u00e2n nh\u1eafc n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong> v\u00e0 ng\u0103n ch\u1eb7n s\u1ef1 bi\u1ebfn d\u1ea1ng trong c\u00e1c m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao, cu\u1ed1i c\u00f9ng \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<h3>Quy t\u1eafc 3h trong thi\u1ebft k\u1ebf PCB l\u00e0 g\u00ec?<\/h3>\n<p>Trong thi\u1ebft k\u1ebf PCB, <strong>Quy t\u1eafc 3h<\/strong> quy \u0111\u1ecbnh r\u1eb1ng kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c d\u1ea5u v\u1ebft song song ph\u1ea3i \u00edt nh\u1ea5t g\u1ea5p ba l\u1ea7n chi\u1ec1u cao c\u1ee7a v\u1eadt li\u1ec7u \u0111i\u1ec7n m\u00f4i gi\u1eefa ch\u00fang.<\/p>\n<p>Nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n n\u00e0y gi\u00fap gi\u1ea3m thi\u1ec3u nhi\u1ec5u xuy\u00ean \u00e2m v\u00e0 nhi\u1ec5u t\u00edn hi\u1ec7u, \u0111\u1ea3m b\u1ea3o <strong>t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong> v\u00e0 gi\u1ea3m nhi\u1ec5u \u0111i\u1ec7n t\u1eeb.<\/p>\n<h3>Ki\u1ec3m tra c\u01a1 b\u1ea3n cho thi\u1ebft k\u1ebf RF trong Pcb l\u00e0 g\u00ec?<\/h3>\n<p>Trong l\u0129nh v\u1ef1c thi\u1ebft k\u1ebf RF, s\u1ef1 c\u00e2n b\u1eb1ng tinh t\u1ebf gi\u1eefa t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 s\u1ef1 h\u00e0i h\u00f2a \u0111i\u1ec7n t\u1eeb \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n.<\/p>\n<p>Khi t\u1ea1o c\u00e1c thi\u1ebft k\u1ebf RF trong PCB, vi\u1ec7c ki\u1ec3m tra c\u01a1 b\u1ea3n l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft. Bao g\u1ed3m c\u00e1c:<\/p>\n<ul>\n<li>X\u00e1c minh d\u1ea5u v\u1ebft tr\u1edf kh\u00e1ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u0111\u1ec3 gi\u1ea3m thi\u1ec3u ph\u1ea3n x\u1ea1 t\u00edn hi\u1ec7u<\/li>\n<li>T\u1ed1i \u01b0u h\u00f3a \u0111\u1ecbnh tuy\u1ebfn \u0111\u01b0\u1eddng truy\u1ec1n<\/li>\n<li>Duy tr\u00ec \u0111\u1ed9 r\u1ed9ng d\u1ea5u v\u1ebft nh\u1ea5t qu\u00e1n<\/li>\n<\/ul>\n<p>Ngo\u00e0i ra, k\u1ef9 thu\u1eadt ph\u1ed1i h\u1ee3p tr\u1edf kh\u00e1ng v\u00e0 ph\u01b0\u01a1ng ph\u00e1p n\u1ed1i \u0111\u1ea5t th\u00edch h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t cao nh\u1ea5t trong c\u00e1c \u1ee9ng d\u1ee5ng t\u1ea7n s\u1ed1 cao.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t cao nh\u1ea5t, h\u00e3y kh\u00e1m ph\u00e1 7 b\u01b0\u1edbc ki\u1ec3m tra quy t\u1eafc thi\u1ebft k\u1ebf thi\u1ebft y\u1ebfu m\u00e0 b\u1ea1n kh\u00f4ng th\u1ec3 b\u1ecf qua trong thi\u1ebft k\u1ebf m\u1ea1ch t\u1ed1c \u0111\u1ed9 cao.<\/p>","protected":false},"author":9,"featured_media":2193,"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":"To ensure signal integrity and peak performance&#44; discover the 7 essential design rule checks you can&#39;t afford to skip in high-speed circuit design.","_links":{"self":[{"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts\/2194","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=2194"}],"version-history":[{"count":1,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts\/2194\/revisions"}],"predecessor-version":[{"id":2498,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/posts\/2194\/revisions\/2498"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/media\/2193"}],"wp:attachment":[{"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/media?parent=2194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/categories?post=2194"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tryvary.com\/vi\/wp-json\/wp\/v2\/tags?post=2194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}