{"id":1280,"date":"2025-10-04T13:34:26","date_gmt":"2025-10-04T13:34:26","guid":{"rendered":"https:\/\/www.wallisemi.com\/?p=1280"},"modified":"2025-10-05T13:35:36","modified_gmt":"2025-10-05T13:35:36","slug":"toi-uu-hoa-chip-rf-cho-thiet-ke-bo-dieu-che-%cf%83-%ce%b4-cua-beidou-3-va-nang-cao-hieu-suat","status":"publish","type":"post","link":"https:\/\/www.wallisemi.com\/vi\/blog\/industry-insights\/optimizing-rf-chips-for-beidou-3-%cf%83-%ce%b4-modulator-design-and-performance-enhancement\/","title":{"rendered":"T\u1ed1i \u01b0u h\u00f3a chip RF cho BeiDou-3: Thi\u1ebft k\u1ebf b\u1ed9 \u0111i\u1ec1u ch\u1ebf \u03a3-\u0394 v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t"},"content":{"rendered":"

T\u00f3m t\u1eaft<\/strong><\/strong><\/h2>\n\n\n\n

V\u1edbi vi\u1ec7c tri\u1ec3n khai \u0111\u1ea7y \u0111\u1ee7 BeiDou-3<\/strong> h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb v\u1ec7 tinh to\u00e0n c\u1ea7u, hi\u1ec7u su\u1ea5t c\u1ee7a Chip RF<\/strong> \u0111\u00e3 tr\u1edf n\u00ean v\u00f4 c\u00f9ng quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb. B\u00e0i b\u00e1o n\u00e0y \u0111i s\u00e2u v\u00e0o vai tr\u00f2 v\u00e0 thi\u1ebft k\u1ebf t\u1ed1i \u01b0u c\u1ee7a B\u1ed9 \u0111i\u1ec1u ch\u1ebf \u03a3-\u0394<\/strong> trong Chip RF BeiDou-3<\/strong>, t\u1eadp trung v\u00e0o vi\u1ec7c gi\u1ea3m thi\u1ec3u nhi\u1ec5u t\u1ea7n s\u1ed1 ph\u1ee5 trong b\u1ed9 t\u1ed5ng h\u1ee3p t\u1ea7n s\u1ed1 v\u00f2ng l\u1eb7p kh\u00f3a pha (PLL) v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n

I. Nh\u1eefng th\u00e1ch th\u1ee9c k\u1ef9 thu\u1eadt v\u00e0 gi\u1ea3i ph\u00e1p cho b\u1ed9 chia t\u1ea7n s\u1ed1 ph\u00e2n \u0111o\u1ea1n trong chip RF<\/strong><\/strong><\/h2>\n\n\n\n

Trong Chip RF BeiDou-3<\/strong>, b\u1ed9 t\u1ed5ng h\u1ee3p t\u1ea7n s\u1ed1 v\u00f2ng l\u1eb7p kh\u00f3a pha c\u00f3 nhi\u1ec7m v\u1ee5 t\u1ea1o ra t\u00edn hi\u1ec7u dao \u0111\u1ed9ng c\u1ee5c b\u1ed9. Do c\u00e1c t\u1ea7n s\u1ed1 s\u00f3ng mang trong BeiDou<\/strong> c\u00e1c t\u1ea7n s\u1ed1 trong h\u1ec7 th\u1ed1ng l\u00e0 c\u00e1c b\u1ed9i s\u1ed1 kh\u00f4ng nguy\u00ean c\u1ee7a t\u1ea7n s\u1ed1 tham chi\u1ebfu, m\u00e1y chia s\u1ed1 th\u1eadp ph\u00e2n<\/strong> l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft. Tuy nhi\u00ean, c\u00e1c b\u1ed9 chia t\u1ea7n s\u1ed1 ph\u00e2n s\u1ed1 truy\u1ec1n th\u1ed1ng t\u1ea1o ra c\u00e1c t\u00edn hi\u1ec7u ph\u1ee5 ph\u00e2n s\u1ed1, l\u00e0m gi\u1ea3m \u0111\u1ed9 tinh khi\u1ebft c\u1ee7a ph\u1ed5 \u0111\u1ea7u ra.<\/p>\n\n\n\n

\u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y, \u0110i\u1ec1u ch\u1ebf \u03a3-\u0394<\/strong> c\u00f4ng ngh\u1ec7 n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng. K\u1ef9 thu\u1eadt n\u00e0y chuy\u1ec3n \u0111\u1ed5i c\u00e1c t\u00edn hi\u1ec7u nhi\u1ec5u ph\u00e2n \u0111o\u1ea1n th\u00e0nh nhi\u1ec5u l\u01b0\u1ee3ng t\u1eed h\u00f3a v\u00e0 \u00e1p d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt \u0111\u1ecbnh h\u00ecnh nhi\u1ec5u \u0111\u1ec3 d\u1ecbch chuy\u1ec3n c\u00e1c t\u00edn hi\u1ec7u nhi\u1ec5u n\u00e0y sang c\u00e1c t\u1ea7n s\u1ed1 cao h\u01a1n. Sau \u0111\u00f3, \u0111\u1eb7c t\u00ednh l\u1ecdc th\u00f4ng th\u1ea5p c\u1ee7a m\u1ea1ch PLL s\u1ebd lo\u1ea1i b\u1ecf ch\u00fang, gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n

II. Thi\u1ebft k\u1ebf t\u1ed1i \u01b0u b\u1ed9 \u0111i\u1ec1u ch\u1ebf \u03a3-\u0394 MASH 1-1-1 cho chip RF<\/strong><\/strong><\/h2>\n\n\n\n

Nghi\u00ean c\u1ee9u t\u1eadp trung v\u00e0o m\u1ed9t B\u1ed9 \u0111i\u1ec1u ch\u1ebf MASH 1-1-1 \u03a3-\u0394<\/strong>, gi\u00fap \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 trong vi\u1ec7c \u0111\u1ecbnh h\u00ecnh nhi\u1ec5u \u0111\u1ed3ng th\u1eddi tr\u00e1nh \u0111\u01b0\u1ee3c s\u1ef1 ph\u1ee9c t\u1ea1p v\u00e0 m\u1ee9c ti\u00eau th\u1ee5 t\u00e0i nguy\u00ean c\u1ee7a c\u00e1c b\u1ed9 \u0111i\u1ec1u ch\u1ebf b\u1eadc cao h\u01a1n. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o ph\u00e2n s\u1ed1 nh\u1ea5t \u0111\u1ecbnh, b\u1ed9 \u0111i\u1ec1u ch\u1ebf n\u00e0y xu\u1ea5t hi\u1ec7n c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng nhi\u1ec5u c\u1ea5u tr\u00fac, bi\u1ec3u hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng c\u00e1c v\u1ea1ch ph\u1ed5 gi\u1ea3 trong ph\u1ed5 \u0111\u1ea7u ra.<\/p>\n\n\n\n

Qua ph\u00e2n t\u00edch chi ti\u1ebft, s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a c\u00e1c nhi\u1ec5u n\u00e0y c\u00f3 li\u00ean quan \u0111\u1ebfn t\u00ednh ch\u1eb5n l\u1ebb c\u1ee7a gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o. Khi gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o l\u00e0 s\u1ed1 ch\u1eb5n, t\u00ednh tu\u1ea7n ho\u00e0n trong d\u00e3y t\u00edn hi\u1ec7u \u0111\u1ea7u ra c\u1ee7a b\u1ed9 \u0111i\u1ec1u ch\u1ebf d\u1eabn \u0111\u1ebfn s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a c\u00e1c \u0111\u1ec9nh ph\u1ed5 trong d\u1ea3i t\u1ea7n s\u1ed1 cao, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o l\u00e0 0,25.<\/p>\n\n\n\n

III. Thi\u1ebft k\u1ebf m\u1ea1ch dither s\u00e1ng t\u1ea1o nh\u1eb1m t\u1ed1i \u01b0u h\u00f3a chip RF<\/strong><\/strong><\/h2>\n\n\n\n

\u0110\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng nhi\u1ec5u c\u1ea5u tr\u00fac, m\u1ed9t thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t m\u1ea1ch t\u1ea1o nhi\u1ec5u<\/strong> \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u01b0a ra. B\u1eb1ng c\u00e1ch \u0111\u01b0a m\u1ed9t d\u00e3y s\u1ed1 ng\u1eabu nhi\u00ean gi\u1ea3 v\u00e0o b\u1ed9 \u0111i\u1ec1u ch\u1ebf, t\u00ednh tu\u1ea7n ho\u00e0n c\u1ee7a d\u00e3y t\u00edn hi\u1ec7u \u0111\u1ea7u ra b\u1ecb ph\u00e1 v\u1ee1. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0a t\u00edn hi\u1ec7u nhi\u1ec5u truy\u1ec1n th\u1ed1ng g\u00e2y ra th\u00eam nhi\u1ec5u trong d\u1ea3i t\u1ea7n, nh\u01b0ng nghi\u00ean c\u1ee9u n\u00e0y \u0111\u1ec1 xu\u1ea5t m\u1ed9t ph\u01b0\u01a1ng \u00e1n \u00e1nh x\u1ea1 c\u1ea3i ti\u1ebfn nh\u1eb1m gi\u1ea3m nhi\u1ec5u:<\/p>\n\n\n\n

Ph\u01b0\u01a1ng \u00e1n l\u1eadp b\u1ea3n \u0111\u1ed3 m\u1edbi<\/strong>: H\u1ec7 th\u1ed1ng \u00e1nh x\u1ea1 nh\u1ecb ph\u00e2n truy\u1ec1n th\u1ed1ng (-1, 1) \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng th\u00e0nh h\u1ec7 th\u1ed1ng \u00e1nh x\u1ea1 b\u1ed1n gi\u00e1 tr\u1ecb (-2, -1, 0, 1), cho ph\u00e9p ki\u1ec3m so\u00e1t hi\u1ec7u \u1ee9ng dither ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n\n\n\n

T\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh \u0111\u1ecbnh h\u00ecnh<\/strong>: M\u1ed9t h\u00e0m \u0111\u1ecbnh h\u00ecnh nhi\u1ec5u b\u1eadc nh\u1ea5t \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho t\u00edn hi\u1ec7u dither, gi\u00fap gi\u1ea3m hi\u1ec7u qu\u1ea3 nhi\u1ec5u trong d\u1ea3i t\u1ea7n \u0111\u1ed3ng th\u1eddi t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean.<\/p>\n\n\n\n

K\u1ebft qu\u1ea3 m\u00f4 ph\u1ecfng cho th\u1ea5y ph\u01b0\u01a1ng ph\u00e1p dither c\u1ea3i ti\u1ebfn n\u00e0y gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 nhi\u1ec5u c\u1ea5u tr\u00fac \u0111\u1ed3ng th\u1eddi duy tr\u00ec m\u1ee9c nhi\u1ec5u trong d\u1ea3i t\u1ea7n th\u1ea5p, ngay c\u1ea3 \u0111\u1ed1i v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o ph\u00e2n s\u1ed1 nh\u01b0 0,1251, 0,6265, 0,5014 v\u00e0 0,2511.<\/p>\n\n\n\n

IV. Thi\u1ebft k\u1ebf m\u1ea1ch v\u00e0 ki\u1ec3m tra hi\u1ec7u n\u0103ng<\/strong><\/strong><\/h2>\n\n\n\n

Nghi\u00ean c\u1ee9u n\u00e0y bao g\u1ed3m vi\u1ec7c thi\u1ebft k\u1ebf m\u1ed9t h\u1ec7 th\u1ed1ng ho\u00e0n ch\u1ec9nh B\u1ed9 \u0111i\u1ec1u ch\u1ebf MASH 1-1-1<\/strong> m\u1ea1ch logic. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m m\u1ed9t b\u1ed9 t\u00edch l\u0169y n\u1ed1i ti\u1ebfp ba giai \u0111o\u1ea1n v\u00e0 m\u1ea1ch \u0111\u1ecbnh h\u00ecnh nhi\u1ec5u chuy\u00ean d\u1ee5ng, \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho Chip RF BeiDou-3<\/strong>\u2018c\u00e1c d\u1ea3i t\u1ea7n s\u1ed1 c\u1ee5 th\u1ec3 (B11, B2a, B2b v\u00e0 B3). C\u00e1c m\u00f4 ph\u1ecfng h\u00e0nh vi s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m Modelsim \u0111\u00e3 cho th\u1ea5y hi\u1ec7u su\u1ea5t xu\u1ea5t s\u1eafc tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p th\u1eed nghi\u1ec7m, kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng:<\/p>\n\n\n\n

Lo\u1ea1i b\u1ecf hi\u1ec7u qu\u1ea3 c\u00e1c nhi\u1ec5u s\u00f3ng ph\u00e2n s\u1ed1<\/p>\n\n\n\n

\u0110\u1ed9 m\u1ecbn c\u1ee7a ph\u1ed5 \u0111\u1ea7u ra \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n<\/p>\n\n\n\n

C\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t nhi\u1ec5u pha c\u1ee7a h\u1ec7 th\u1ed1ng<\/p>\n\n\n\n

V. Gi\u00e1 tr\u1ecb k\u1ef9 thu\u1eadt v\u00e0 tri\u1ec3n v\u1ecdng \u1ee9ng d\u1ee5ng c\u1ee7a chip RF<\/strong><\/strong><\/h2>\n\n\n\n

\u0110\u00e3 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a B\u1ed9 \u0111i\u1ec1u ch\u1ebf \u03a3-\u0394<\/strong> Thi\u1ebft k\u1ebf n\u00e0y gi\u1ea3i quy\u1ebft c\u00e1c th\u00e1ch th\u1ee9c k\u1ef9 thu\u1eadt li\u00ean quan \u0111\u1ebfn k\u1ef9 thu\u1eadt ph\u00e2n chia t\u1ea7n s\u1ed1 theo ph\u1ea7n trong Chip RF BeiDou-3<\/strong>. Nh\u1eefng \u0111\u1ed5i m\u1edbi ch\u00ednh bao g\u1ed3m:<\/p>\n\n\n\n

T\u1ed1i \u01b0u h\u00f3a c\u1ea5u tr\u00fac \u0111\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c th\u00e0nh ph\u1ea7n nhi\u1ec5u c\u1ee7a b\u1ed9 \u0111i\u1ec1u ch\u1ebf<\/p>\n\n\n\n

M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p l\u1eadp b\u1ea3n \u0111\u1ed3 m\u1edbi nh\u1eb1m c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t hi\u1ec7u \u1ee9ng dither<\/p>\n\n\n\n

S\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t v\u00e0 m\u1ee9c ti\u00eau th\u1ee5 t\u00e0i nguy\u00ean<\/p>\n\n\n\n

\u0110i\u1ec1u n\u00e0y Chip RF<\/strong> thi\u1ebft k\u1ebf kh\u00f4ng ch\u1ec9 h\u1ed7 tr\u1ee3 BeiDou-3<\/strong> nh\u01b0ng c\u0169ng h\u1ee9a h\u1eb9n mang l\u1ea1i nhi\u1ec1u ti\u1ec1m n\u0103ng cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb v\u1ec7 tinh to\u00e0n c\u1ea7u kh\u00e1c. Khi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u1ecbnh v\u1ecb ng\u00e0y c\u00e0ng m\u1edf r\u1ed9ng, nh\u1eefng ti\u1ebfn b\u1ed9 n\u00e0y s\u1ebd h\u1ed7 tr\u1ee3 c\u00e1c l\u0129nh v\u1ef1c quan tr\u1ecdng nh\u01b0 l\u00e1i xe t\u1ef1 \u0111\u1ed9ng, n\u00f4ng nghi\u1ec7p ch\u00ednh x\u00e1c v\u00e0 th\u00f4ng tin li\u00ean l\u1ea1c kh\u1ea9n c\u1ea5p.<\/p>\n\n\n\n

VI. K\u1ebft lu\u1eadn<\/strong><\/strong><\/h2>\n\n\n\n

C\u00e1i Chip RF<\/strong> thi\u1ebft k\u1ebf cho BeiDou-3<\/strong> s\u1eed d\u1ee5ng m\u1ed9t phi\u00ean b\u1ea3n \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a B\u1ed9 \u0111i\u1ec1u ch\u1ebf \u03a3-\u0394<\/strong> n\u00e2ng cao hi\u1ec7u su\u1ea5t c\u1ee7a chip, mang l\u1ea1i gi\u1ea3i ph\u00e1p cho hi\u1ec7n t\u01b0\u1ee3ng nhi\u1ec5u t\u1ea7n s\u1ed1 ph\u00e2n \u0111o\u1ea1n v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 tin c\u1eady t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng. V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a Chip RF<\/strong> \u0110\u1ed1i v\u1edbi l\u0129nh v\u1ef1c \u0111\u1ecbnh v\u1ecb v\u1ec7 tinh, nh\u1eefng c\u00f4ng ngh\u1ec7 n\u00e0y \u0111ang m\u1edf \u0111\u01b0\u1eddng cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb to\u00e0n c\u1ea7u ch\u00ednh x\u00e1c h\u01a1n, hi\u1ec7u qu\u1ea3 h\u01a1n v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng h\u01a1n.<\/p>","protected":false},"excerpt":{"rendered":"

Abstract With the full implementation of the BeiDou-3 global satellite navigation system, the performance of RF chips has become crucial for ensuring the system\u2019s positioning accuracy and reliability. This paper delves into the role and optimized design of the \u03a3-\u0394 modulator in the BeiDou-3 RF chip, focusing on mitigating fractional spurs in the phase-locked loop (PLL) frequency synthesizer […]<\/p>\n","protected":false},"author":1,"featured_media":1279,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[30,31],"tags":[35],"class_list":["post-1280","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-insights","category-blog","tag-jason-chen"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/posts\/1280","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=1280"}],"version-history":[{"count":1,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/posts\/1280\/revisions"}],"predecessor-version":[{"id":1281,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/posts\/1280\/revisions\/1281"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/media\/1279"}],"wp:attachment":[{"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/media?parent=1280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/categories?post=1280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/tags?post=1280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}