{"id":1412,"date":"2025-10-12T02:16:38","date_gmt":"2025-10-12T02:16:38","guid":{"rendered":"https:\/\/www.wallisemi.com\/?p=1412"},"modified":"2025-10-13T02:18:01","modified_gmt":"2025-10-13T02:18:01","slug":"dat-duoc-nhung-buoc-dot-pha-trong-thiet-ke-va-hieu-suat-cua-cac-chip-rf-dinh-vi-tu-thiet-ke","status":"publish","type":"post","link":"https:\/\/www.wallisemi.com\/vi\/blog\/industry-insights\/achieving-breakthroughs-in-the-design-and-performance-of-self-designed-navigation-rf-chips\/","title":{"rendered":"\u0110\u1ea1t \u0111\u01b0\u1ee3c nh\u1eefng b\u01b0\u1edbc \u0111\u1ed9t ph\u00e1 trong thi\u1ebft k\u1ebf v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c chip RF \u0111\u1ecbnh v\u1ecb t\u1ef1 thi\u1ebft k\u1ebf"},"content":{"rendered":"

Khi h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb v\u1ec7 tinh to\u00e0n c\u1ea7u chuy\u1ec3n t\u1eeb giai \u0111o\u1ea1n ch\u1ee7 y\u1ebfu d\u1ef1a v\u00e0o GPS sang \u201ck\u1ef7 nguy\u00ean GNSS\u201d v\u1edbi kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u0111a h\u1ec7 th\u1ed1ng, Trung Qu\u1ed1c \u0111\u00e3 kh\u1ea9n tr\u01b0\u01a1ng y\u00eau c\u1ea7u c\u00e1c chip \u0111\u1ecbnh v\u1ecb c\u00f3 hi\u1ec7u su\u1ea5t cao v\u00e0 m\u1ee9c \u0111\u1ed9 t\u1ef1 ch\u1ee7 cao \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho vi\u1ec7c ph\u00e1t tri\u1ec3n v\u00e0 c\u00f4ng nghi\u1ec7p h\u00f3a h\u1ec7 th\u1ed1ng BeiDou. Trong b\u1ed1i c\u1ea3nh \u0111\u00f3, Chip RF<\/strong> \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng nh\u01b0 l\u00e0 th\u00e0nh ph\u1ea7n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng c\u1ed1t l\u00f5i c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb thu t\u00edn hi\u1ec7u \u0111\u1ecbnh v\u1ecb. Hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c chip n\u00e0y quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 nh\u1ea1y, kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ecbnh v\u1ecb c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb.<\/p>\n\n\n\n

Trong nghi\u00ean c\u1ee9u c\u1ee7a m\u00ecnh, Zhao Jianxin v\u00e0 Zou Zhenjie \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb \u0111a ch\u1ebf \u0111\u1ed9 ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng v\u00e0 t\u00edch h\u1ee3p cao Chip RF<\/strong> ki\u1ebfn tr\u00fac. Con chip n\u00e0y \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n d\u1ef1a tr\u00ean c\u00f4ng ngh\u1ec7 RF-CMOS v\u00e0 \u00e1p d\u1ee5ng ki\u1ebfn tr\u00fac t\u1ea7n s\u1ed1 trung gian chuy\u1ec3n \u0111\u1ed5i xu\u1ed1ng \u0111\u01a1n. N\u00f3 t\u00edch h\u1ee3p t\u1ea5t c\u1ea3 c\u00e1c m\u00f4-\u0111un ch\u00ednh, bao g\u1ed3m b\u1ed9 khu\u1ebfch \u0111\u1ea1i ti\u1ebfng \u1ed3n th\u1ea5p (LNA), b\u1ed9 tr\u1ed9n, b\u1ed9 l\u1ecdc ph\u1ee9c t\u1ea1p, b\u1ed9 khu\u1ebfch \u0111\u1ea1i \u0111\u1ed9 l\u1ee3i bi\u1ebfn \u0111\u1ed5i (VGA), b\u1ed9 t\u1ed5ng h\u1ee3p t\u1ea7n s\u1ed1 v\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u01b0\u01a1ng t\u1ef1-s\u1ed1 (ADC) 4 bit, nh\u1eb1m th\u1ef1c hi\u1ec7n vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i hi\u1ec7u qu\u1ea3 t\u1eeb t\u00edn hi\u1ec7u RF sang t\u00edn hi\u1ec7u t\u1ea7n s\u1ed1 trung gian k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n\n\n\n

Thi\u1ebft k\u1ebf m\u1ea1ch v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t ch\u00ednh<\/strong><\/strong><\/h5>\n\n\n\n

V\u1ec1 m\u1eb7t thi\u1ebft k\u1ebf m\u1ea1ch, Chip RF<\/strong> \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng \u0111\u1ed1i v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng nh\u01b0 ki\u1ec3m so\u00e1t nhi\u1ec5u, \u0111\u1ed9 tuy\u1ebfn t\u00ednh v\u00e0 kh\u1ea3 n\u0103ng tri\u1ec7t ti\u00eau h\u00ecnh \u1ea3nh. Th\u00f4ng qua s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa b\u1ed9 khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u y\u1ebfu (LNA) v\u1edbi c\u1ea5u tr\u00fac cu\u1ed9n c\u1ea3m ph\u00e2n gi\u1ea3i ngu\u1ed3n v\u00e0 b\u1ed9 khu\u1ebfch \u0111\u1ea1i RF-VGA ho\u00e0n to\u00e0n vi sai, h\u1ec7 s\u1ed1 nhi\u1ec5u \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u1edf m\u1ee9c d\u01b0\u1edbi 2 dB. B\u1ed9 l\u1ecdc ph\u1ee9c t\u1ea1p Chebyshev b\u1eadc n\u0103m \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c tri\u1ec7t ti\u00eau ngo\u00e0i d\u1ea3i t\u1ea7n tr\u00ean 30 dB, v\u00e0 t\u1ef7 l\u1ec7 lo\u1ea1i b\u1ecf t\u00edn hi\u1ec7u \u1ea3o \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n l\u00ean 47 dB nh\u1edd m\u00f4-\u0111un hi\u1ec7u chu\u1ea9n tr\u01b0\u1edbc, gi\u00fap n\u00e2ng cao \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 tinh khi\u1ebft c\u1ee7a t\u00edn hi\u1ec7u.<\/p>\n\n\n\n

H\u01a1n n\u1eefa, con chip n\u00e0y c\u00f2n s\u1edf h\u1eefu d\u1ea3i \u0111\u1ed9ng v\u00e0 \u0111\u1ed9 tuy\u1ebfn t\u00ednh v\u01b0\u1ee3t tr\u1ed9i. Thi\u1ebft k\u1ebf VGA n\u0103m c\u1ea5p \u0111\u1ea1t \u0111\u01b0\u1ee3c d\u1ea3i \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9 l\u1ee3i 50 dB, v\u1edbi \u0111i\u1ec3m c\u1eaft th\u1ee9 ba c\u1ee7a t\u00edn hi\u1ec7u \u0111\u1ea7u ra (OIP3) tr\u00ean 20 dBm, \u0111\u1ea3m b\u1ea3o vi\u1ec7c thu nh\u1eadn \u1ed5n \u0111\u1ecbnh c\u00e1c t\u00edn hi\u1ec7u \u0111\u1ecbnh v\u1ecb y\u1ebfu ngay c\u1ea3 trong m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n t\u1eeb ph\u1ee9c t\u1ea1p.<\/p>\n\n\n\n

Thi\u1ebft k\u1ebf v\u1eadt l\u00fd v\u00e0 c\u00e1c k\u1ef9 thu\u1eadt kh\u1eed nhi\u1ec5u<\/strong><\/strong><\/h5>\n\n\n\n

V\u1ec1 m\u1eb7t thi\u1ebft k\u1ebf v\u1eadt l\u00fd, Chip RF<\/strong> \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p c\u00e1ch ly v\u00e0 ch\u1ed1ng nhi\u1ec5u nghi\u00eam ng\u1eb7t, bao g\u1ed3m c\u00e1c v\u00f2ng b\u1ea3o v\u1ec7, c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac n\u1ec1n \u0111\u1ed9c l\u1eadp v\u00e0 c\u00f4ng ngh\u1ec7 l\u1ecdc ngu\u1ed3n. Nh\u1eefng bi\u1ec7n ph\u00e1p n\u00e0y gi\u00fap tri\u1ec7t ti\u00eau hi\u1ec7u qu\u1ea3 nhi\u1ec5u t\u1eeb c\u00e1c m\u1ea1ch chuy\u1ec3n m\u1ea1ch k\u1ef9 thu\u1eadt s\u1ed1 c\u00f3 th\u1ec3 g\u00e2y nhi\u1ec5u cho c\u00e1c m\u1ea1ch t\u1ea7n s\u1ed1 v\u00f4 tuy\u1ebfn (RF), \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh trong ho\u1ea1t \u0111\u1ed9ng c\u1ee7a chip ngay c\u1ea3 khi c\u00f3 m\u1ee9c \u0111\u1ed9 t\u00edch h\u1ee3p cao.<\/p>\n\n\n\n

K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m v\u00e0 t\u00e1c \u0111\u1ed9ng \u0111\u1ed1i v\u1edbi ng\u00e0nh<\/strong><\/strong><\/h5>\n\n\n\n

K\u1ebft qu\u1ea3 ki\u1ec3m tra cho th\u1ea5y r\u1eb1ng \u0111i\u1ec1u n\u00e0y Chip RF<\/strong> v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi c\u00e1c ph\u01b0\u01a1ng \u00e1n thi\u1ebft k\u1ebf truy\u1ec1n th\u1ed1ng v\u1ec1 c\u00e1c ch\u1ec9 s\u1ed1 quan tr\u1ecdng nh\u01b0 OIP3, IMRR v\u00e0 h\u1ec7 s\u1ed1 nhi\u1ec5u. Thi\u1ebft b\u1ecb n\u00e0y kh\u00f4ng ch\u1ec9 ho\u00e0n to\u00e0n t\u01b0\u01a1ng th\u00edch v\u1edbi b\u1ed1n h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb ch\u00ednh \u2014 BeiDou, GPS, GLONASS v\u00e0 Galileo \u2014 m\u00e0 c\u00f2n s\u1edf h\u1eefu n\u0103ng l\u1ef1c c\u00f4ng ngh\u1ec7 \u0111\u1ee7 \u0111\u1ec3 thay th\u1ebf c\u00e1c s\u1ea3n ph\u1ea9m t\u01b0\u01a1ng t\u1ef1 c\u1ee7a n\u01b0\u1edbc ngo\u00e0i. \u0110i\u1ec1u n\u00e0y mang l\u1ea1i s\u1ef1 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt thi\u1ebft y\u1ebfu cho s\u1ef1 ph\u00e1t tri\u1ec3n n\u1ed9i \u0111\u1ecba v\u00e0 s\u1ef1 \u0111\u1ed9c l\u1eadp c\u1ee7a c\u00e1c b\u1ed9 thu \u0111\u1ecbnh v\u1ecb Trung Qu\u1ed1c.<\/p>","protected":false},"excerpt":{"rendered":"

As the global satellite navigation system evolves from being dominated by GPS to a “GNSS era” with multi-system compatibility, China has urgently demanded high-performance and highly autonomous navigation chips for the development and industrialization of the BeiDou system. In this context, RF chips play a critical role as the core front-end component of navigation receivers. The […]<\/p>\n","protected":false},"author":1,"featured_media":1391,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[30,31],"tags":[36],"class_list":["post-1412","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-insights","category-blog","tag-yvette-wu"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/posts\/1412","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/comments?post=1412"}],"version-history":[{"count":1,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/posts\/1412\/revisions"}],"predecessor-version":[{"id":1413,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/posts\/1412\/revisions\/1413"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/media\/1391"}],"wp:attachment":[{"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/media?parent=1412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/categories?post=1412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/tags?post=1412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}