Chip RF, hay c\u00f2n g\u1ecdi l\u00e0 m\u1ea1ch t\u00edch h\u1ee3p t\u1ea7n s\u1ed1 v\u00f4 tuy\u1ebfn (RFIC), l\u00e0 tr\u00e1i tim c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng kh\u00f4ng d\u00e2y, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf chuy\u00ean bi\u1ec7t \u0111\u1ec3 x\u1eed l\u00fd t\u00edn hi\u1ec7u RF. T\u1eeb truy\u1ec1n th\u00f4ng di \u0111\u1ed9ng \u0111\u1ebfn truy\u1ec1n d\u1eabn v\u1ec7 tinh, c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng d\u00e2y hi\u1ec7n \u0111\u1ea1i \u0111\u1ec1u ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o c\u00e1c chip RF c\u00f3 \u0111\u1ed9 t\u00edch h\u1ee3p cao. Nh\u01b0ng ch\u00ednh x\u00e1c th\u00ec m\u1ed9t chip RF ho\u00e0n ch\u1ec9nh bao g\u1ed3m nh\u1eefng th\u00e0nh ph\u1ea7n n\u00e0o, v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y ho\u1ea1t \u0111\u1ed9ng c\u00f9ng nhau nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n\n\n\n
Th\u00f4ng th\u01b0\u1eddng, chip RF kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t m\u1ea1ch \u0111\u01a1n ch\u1ee9c n\u0103ng m\u00e0 l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p t\u00edch h\u1ee3p cao c\u1ee7a nhi\u1ec1u m\u00f4-\u0111un ch\u1ee9c n\u0103ng. M\u1ed7i lo\u1ea1i chip RF c\u00f3 th\u1ec3 bao g\u1ed3m c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c nhau \u0111\u1ec3 khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u, chuy\u1ec3n \u0111\u1ed5i t\u1ea7n s\u1ed1, l\u1ecdc v\u00e0 \u0111i\u1ec1u khi\u1ec3n, t\u1ea5t c\u1ea3 \u0111\u1ec1u ph\u1ed1i h\u1ee3p v\u1edbi nhau \u0111\u1ec3 x\u1eed l\u00fd hi\u1ec7u qu\u1ea3 c\u00e1c t\u00edn hi\u1ec7u RF.<\/p>\n\n\n\n
Trong k\u00eanh thu, c\u00e1c chip RF s\u1eed d\u1ee5ng b\u1ed9 khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u y\u1ebfu (LNA) \u0111\u1ec3 khu\u1ebfch \u0111\u1ea1i ban \u0111\u1ea7u c\u00e1c t\u00edn hi\u1ec7u y\u1ebfu thu \u0111\u01b0\u1ee3c t\u1eeb \u0103ng-ten, \u0111\u1ed3ng th\u1eddi gi\u1ea3m thi\u1ec3u nhi\u1ec5u. B\u01b0\u1edbc n\u00e0y c\u00f3 vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 nh\u1ea1y thu cao.<\/p>\n\n\n\n
B\u1ed9 khu\u1ebfch \u0111\u1ea1i c\u00f4ng su\u1ea5t (PA) l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong \u0111\u01b0\u1eddng truy\u1ec1n. N\u00f3 khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u RF \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ebf l\u00ean m\u1ee9c c\u00f4ng su\u1ea5t \u0111\u1ee7 l\u1edbn, gi\u00fap t\u00edn hi\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c ph\u00e1t ra hi\u1ec7u qu\u1ea3 qua \u0103ng-ten.<\/p>\n\n\n\n
C\u00e1c chip RF s\u1eed d\u1ee5ng b\u1ed9 tr\u1ed9n \u0111\u1ec3 k\u1ebft h\u1ee3p t\u00edn hi\u1ec7u RF v\u1edbi t\u00edn hi\u1ec7u LO, t\u1eeb \u0111\u00f3 th\u1ef1c hi\u1ec7n qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i t\u1ea7n s\u1ed1 l\u00ean ho\u1eb7c xu\u1ed1ng. T\u00edn hi\u1ec7u LO cung c\u1ea5p m\u1ed9t tham chi\u1ebfu t\u1ea7n s\u1ed1 c\u1ee5c b\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 ch\u00ednh x\u00e1c cho qu\u00e1 tr\u00ecnh tr\u1ed9n.<\/p>\n\n\n\n
\u0110\u1ec3 lo\u1ea1i b\u1ecf nhi\u1ec5u ngo\u00e0i d\u1ea3i t\u1ea7n v\u00e0 c\u00e1c t\u00edn hi\u1ec7u gi\u1ea3, c\u00e1c chip RF \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p nhi\u1ec1u b\u1ed9 l\u1ecdc kh\u00e1c nhau, \u0111\u1ea3m b\u1ea3o ch\u1ec9 cho ph\u00e9p c\u00e1c d\u1ea3i t\u1ea7n s\u1ed1 m\u1ee5c ti\u00eau \u0111i qua, t\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n t\u1ef7 l\u1ec7 t\u00edn hi\u1ec7u tr\u00ean nhi\u1ec5u (SNR) v\u00e0 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n
Trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111a b\u0103ng t\u1ea7n v\u00e0 \u0111a ch\u1ebf \u0111\u1ed9, c\u00e1c chip RF s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng t\u1eafc RF n\u1ed9i b\u1ed9 \u0111\u1ec3 nhanh ch\u00f3ng thay \u0111\u1ed5i \u0111\u01b0\u1eddng d\u1eabn t\u00edn hi\u1ec7u, cho ph\u00e9p th\u1ef1c hi\u1ec7n c\u00e1c ch\u1ee9c n\u0103ng nh\u01b0 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa ch\u1ebf \u0111\u1ed9 ph\u00e1t v\u00e0 nh\u1eadn c\u0169ng nh\u01b0 l\u1ef1a ch\u1ecdn b\u0103ng t\u1ea7n, t\u1eeb \u0111\u00f3 n\u00e2ng cao t\u00ednh linh ho\u1ea1t c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n
B\u1ed9 t\u1ed5ng h\u1ee3p t\u1ea7n s\u1ed1 cung c\u1ea5p t\u00edn hi\u1ec7u dao \u0111\u1ed9ng c\u1ee5c b\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00f3 th\u1ec3 l\u1eadp tr\u00ecnh cho chip RF. B\u1ed9 \u0111i\u1ec1u ch\u1ebf\/gi\u1ea3i \u0111i\u1ec1u ch\u1ebf (modem) c\u00f3 nhi\u1ec7m v\u1ee5 chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u b\u0103ng c\u01a1 s\u1edf th\u00e0nh t\u00edn hi\u1ec7u RF v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, do \u0111\u00f3 tr\u1edf th\u00e0nh m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng d\u00e2y.<\/p>\n\n\n\n
M\u1ed9t s\u1ed1 chip RF ti\u00ean ti\u1ebfn \u0111\u00e3 c\u1ed1 g\u1eafng t\u00edch h\u1ee3p c\u1ea5u tr\u00fac \u0103ng-ten ngay trong ch\u00ednh v\u1ecf chip. Ngo\u00e0i ra, c\u00e1c m\u1ea1ch ph\u1ea3n h\u1ed3i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9 l\u1ee3i t\u1ef1 \u0111\u1ed9ng, gi\u00fap n\u00e2ng cao \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 d\u1ea3i \u0111\u1ed9ng.<\/p>\n\n\n\n
C\u00e1c chip RF hi\u1ec7n \u0111\u1ea1i t\u00edch h\u1ee3p c\u00e1c m\u00f4-\u0111un ch\u1ee9c n\u0103ng n\u00eau tr\u00ean v\u00e0o m\u1ed9t chip duy nh\u1ea5t, \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1i \u01b0u gi\u1eefa hi\u1ec7u n\u0103ng, k\u00edch th\u01b0\u1edbc v\u00e0 m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng. V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c c\u00f4ng ngh\u1ec7 nh\u01b0 5G v\u00e0 Internet v\u1ea1n v\u1eadt (IoT), chip RF s\u1ebd ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n theo h\u01b0\u1edbng t\u00edch h\u1ee3p cao h\u01a1n v\u00e0 hi\u1ec7u n\u0103ng t\u1ed1t h\u01a1n, t\u1ea1o ra m\u1ed9t n\u1ec1n t\u1ea3ng ph\u1ea7n c\u1ee9ng m\u1ea1nh m\u1ebd h\u01a1n cho k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y.<\/p>","protected":false},"excerpt":{"rendered":"
RF chips, or RF Integrated Circuits (RFIC), are the heart of wireless communication systems, specifically designed to process RF signals. From mobile communications to satellite transmission, modern wireless devices rely heavily on highly integrated RF chips. But what exactly makes up a complete RF chip, and how do these components work together? 1. Basic Structure […]<\/p>\n","protected":false},"author":1,"featured_media":1349,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[30,31],"tags":[36],"class_list":["post-1348","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\/1348","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=1348"}],"version-history":[{"count":1,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/posts\/1348\/revisions"}],"predecessor-version":[{"id":1350,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/posts\/1348\/revisions\/1350"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/media\/1349"}],"wp:attachment":[{"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/media?parent=1348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/categories?post=1348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/tags?post=1348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}