C\u00e1c ngu\u1ed3n t\u00edn hi\u1ec7u vect\u01a1 hi\u1ec7u su\u1ea5t cao \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c l\u0129nh v\u1ef1c ti\u00ean ti\u1ebfn nh\u01b0 th\u1eed nghi\u1ec7m vi\u1ec5n th\u00f4ng, chi\u1ebfn tranh \u0111i\u1ec7n t\u1eed v\u00e0 radar. T\u1eeb tr\u01b0\u1edbc \u0111\u1ebfn nay, th\u1ecb tr\u01b0\u1eddng chip v\u00e0 c\u00f4ng ngh\u1ec7 t\u1ea7n s\u1ed1 v\u00f4 tuy\u1ebfn (RF) ch\u1ee7 y\u1ebfu do c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t n\u01b0\u1edbc ngo\u00e0i chi ph\u1ed1i, d\u1eabn \u0111\u1ebfn nh\u1eefng r\u1ee7i ro trong chu\u1ed7i cung \u1ee9ng v\u00e0 chi ph\u00ed cao. \u0110\u1ec3 kh\u1eafc ph\u1ee5c t\u00ecnh tr\u1ea1ng n\u00e0y, m\u1ed9t nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e1t tri\u1ec3n th\u00e0nh c\u00f4ng m\u1ed9t ngu\u1ed3n t\u00edn hi\u1ec7u vect\u01a1 \u0111a k\u00eanh s\u1eed d\u1ee5ng chip RF n\u1ed9i \u0111\u1ecba, \u0111\u00e1nh d\u1ea5u m\u1ed9t b\u01b0\u1edbc ti\u1ebfn quan tr\u1ecdng h\u01b0\u1edbng t\u1edbi vi\u1ec7c s\u1edf h\u1eefu thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m cao c\u1ea5p \u0111\u1ed9c l\u1eadp v\u00e0 an to\u00e0n.<\/p>\n\n\n\n
Ki\u1ebfn tr\u00fac c\u1ed1t l\u00f5i: T\u00edch h\u1ee3p FPGA v\u00e0 chip RF n\u1ed9i \u0111\u1ecba<\/p>\n\n\n\n
\u0110\u1ec3 kh\u1eafc ph\u1ee5c nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a c\u00e1c s\u1ea3n ph\u1ea9m ngu\u1ed3n t\u00edn hi\u1ec7u n\u01b0\u1edbc ngo\u00e0i, nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 thi\u1ebft k\u1ebf m\u1ed9t ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng m\u1ea1nh m\u1ebd. Tr\u00e1i tim c\u1ee7a h\u1ec7 th\u1ed1ng l\u00e0 FPGA, ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ea1o t\u00edn hi\u1ec7u, l\u1eadp l\u1ecbch v\u00e0 \u0111i\u1ec1u khi\u1ec3n h\u1ec7 th\u1ed1ng. \u0110i\u1ec3m \u0111\u1ed9t ph\u00e1 n\u1eb1m \u1edf vi\u1ec7c s\u1eed d\u1ee5ng chip thu ph\u00e1t RF CX8242K, m\u1ed9t chip RF b\u0103ng r\u1ed9ng s\u1ea3n xu\u1ea5t trong n\u01b0\u1edbc, l\u00e0m b\u1ed9 t\u1ea1o t\u00edn hi\u1ec7u RF. Chip n\u00e0y t\u00edch h\u1ee3p b\u1ed9 DAC t\u1ed1c \u0111\u1ed9 cao, b\u1ed9 tr\u1ed9n, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u1ea7n s\u1ed1 l\u00ean k\u1ef9 thu\u1eadt s\u1ed1 (DUC) v\u00e0 m\u00f4-\u0111un \u0111i\u1ec1u khi\u1ec3n c\u00f4ng su\u1ea5t, h\u1ed7 tr\u1ee3 b\u0103ng th\u00f4ng t\u00edn hi\u1ec7u t\u1ee9c th\u1eddi l\u00ean \u0111\u1ebfn 1200 MHz, \u0111\u1ea3m b\u1ea3o an ninh chu\u1ed7i cung \u1ee9ng v\u00e0 hi\u1ec7u su\u1ea5t cao.<\/p>\n\n\n\n
C\u00e1c c\u00f4ng ngh\u1ec7 ch\u1ee7 ch\u1ed1t: \u0110\u1ea1t \u0111\u01b0\u1ee3c b\u0103ng th\u00f4ng r\u1ed9ng v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c cao<\/p>\n\n\n\n
H\u1ec7 th\u1ed1ng n\u00e0y t\u00edch h\u1ee3p m\u1ed9t s\u1ed1 c\u00f4ng ngh\u1ec7 then ch\u1ed1t cho vi\u1ec7c trao \u0111\u1ed5i d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao v\u00e0 t\u1ea1o t\u00edn hi\u1ec7u ch\u00ednh x\u00e1c:<\/p>\n\n\n\n
Giao di\u1ec7n t\u1ed1c \u0111\u1ed9 c\u1ef1c cao JESD204C<\/p>\n\n\n\n
Giao th\u1ee9c n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi b\u1ed9 thu ph\u00e1t n\u1ed1i ti\u1ebfp t\u1ed1c \u0111\u1ed9 cao c\u1ee7a FPGA, cho ph\u00e9p t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u l\u00ean t\u1edbi 16,5 Gbps tr\u00ean m\u1ed7i k\u00eanh, \u0111\u1ea3m b\u1ea3o vi\u1ec7c truy\u1ec1n t\u00edn hi\u1ec7u b\u0103ng r\u1ed9ng theo th\u1eddi gian th\u1ef1c t\u1edbi chip RF.<\/p>\n\n\n\n
\u0110\u1ed3ng b\u1ed9 h\u00f3a \u0111\u1ed3ng h\u1ed3 ch\u00ednh x\u00e1c<\/p>\n\n\n\n
S\u1eed d\u1ee5ng chip qu\u1ea3n l\u00fd \u0111\u1ed3ng h\u1ed3 HMC7044, h\u1ec7 th\u1ed1ng \u0111\u1ed3ng b\u1ed9 h\u00f3a \u0111\u1ed3ng h\u1ed3 c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c k\u00eanh v\u1edbi \u0111\u1ed9 dao \u0111\u1ed9ng th\u1ea5p, \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng cao cho \u0111\u1ea7u ra \u0111a k\u00eanh.<\/p>\n\n\n\n
L\u1eadp k\u1ebf ho\u1ea1ch t\u1ea7n s\u1ed1 th\u00f4ng minh<\/p>\n\n\n\n
Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9ng t\u1ea7n s\u1ed1 l\u1ea5y m\u1eabu c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i s\u1ed1-t\u01b0\u01a1ng t\u1ef1 (DAC) v\u00e0 c\u00e1c h\u1ec7 s\u1ed1 n\u1ed9i suy gi\u00fap ng\u0103n ch\u1eb7n nhi\u1ec5u, mang l\u1ea1i t\u00edn hi\u1ec7u c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao tr\u00ean d\u1ea3i t\u1ea7n s\u1ed1 r\u1ed9ng (t\u1eeb 10 MHz \u0111\u1ebfn 6 GHz).<\/p>\n\n\n\n
Hi\u1ec7u su\u1ea5t xu\u1ea5t s\u1eafc: K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m v\u00e0 x\u00e1c nh\u1eadn<\/p>\n\n\n\n
C\u00e1c th\u1eed nghi\u1ec7m th\u1ef1c nghi\u1ec7m cho th\u1ea5y hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a ngu\u1ed3n t\u00edn hi\u1ec7u d\u1ef1a tr\u00ean chip RF:<\/p>\n\n\n\n
\u0110\u1ea7u ra b\u0103ng r\u1ed9ng: D\u1ea3i t\u1ea7n s\u1ed1 t\u1eeb 10 MHz \u0111\u1ebfn 6 GHz.<\/p>\n\n\n\n
B\u0103ng th\u00f4ng cao: H\u1ed7 tr\u1ee3 b\u0103ng th\u00f4ng t\u00edn hi\u1ec7u \u0111i\u1ec1u ch\u1ebf l\u00ean \u0111\u1ebfn 800 MHz tr\u00ean m\u1ed7i k\u00eanh, v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i.<\/p>\n\n\n\n
T\u00edn hi\u1ec7u nhi\u1ec5u th\u1ea5p: D\u1ea3i \u0111\u1ed9ng \u0111\u01a1n t\u1ea7n v\u01b0\u1ee3t qu\u00e1 80 dBc, nhi\u1ec5u pha d\u01b0\u1edbi -99 dBc\/Hz \u1edf t\u1ea7n s\u1ed1 1 kHz.<\/p>\n\n\n\n
\u0110\u1ed3ng b\u1ed9 h\u00f3a \u0111a k\u00eanh: H\u1ed7 tr\u1ee3 \u0111\u1ea7u ra \u0111\u1ed3ng b\u1ed9 hai k\u00eanh \u0111\u1ec3 th\u1eed nghi\u1ec7m c\u00e1c h\u1ec7 th\u1ed1ng ti\u00ean ti\u1ebfn nh\u01b0 m\u1ea3ng pha v\u00e0 MIMO.<\/p>\n\n\n\n
K\u1ebft lu\u1eadn v\u00e0 tri\u1ec3n v\u1ecdng trong t\u01b0\u01a1ng lai<\/p>\n\n\n\n
Nghi\u00ean c\u1ee9u n\u00e0y ch\u1ee9ng minh ti\u1ec1m n\u0103ng c\u1ee7a c\u00e1c chip RF n\u1ed9i \u0111\u1ecba trong vi\u1ec7c ph\u00e1t tri\u1ec3n thi\u1ebft b\u1ecb ki\u1ec3m tra \u0111\u1ed9c l\u1eadp, hi\u1ec7u su\u1ea5t cao. Chip RF CX8242K \u0111\u00e3 th\u1ec3 hi\u1ec7n hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i, kh\u1eb3ng \u0111\u1ecbnh kh\u1ea3 n\u0103ng ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c n\u00e2ng cao c\u1ee7a c\u00e1c chip RF n\u1ed9i \u0111\u1ecba trong c\u00e1c \u1ee9ng d\u1ee5ng cao c\u1ea5p. C\u00f9ng v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a c\u00f4ng ngh\u1ec7 chip RF, Trung Qu\u1ed1c \u0111ang ti\u1ebfn t\u1edbi m\u1ee5c ti\u00eau t\u1ef1 ch\u1ee7 ho\u00e0n to\u00e0n trong l\u0129nh v\u1ef1c \u0111i\u1ec7n t\u1eed v\u00e0 thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng cao c\u1ea5p, t\u1eeb \u0111\u00f3 gi\u1ea3m b\u1edbt s\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c s\u1ea3n ph\u1ea9m n\u01b0\u1edbc ngo\u00e0i.<\/p>","protected":false},"excerpt":{"rendered":"
High-performance vector signal sources are critical for advanced fields like communications testing, electronic warfare, and radar. Traditionally, RF chips and technologies have been dominated by foreign manufacturers, leading to supply chain vulnerabilities and high costs. To overcome this, a research team successfully developed a multi-channel vector signal source using domestic RF chips, marking a significant […]<\/p>\n","protected":false},"author":1,"featured_media":1266,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[30,31],"tags":[36],"class_list":["post-1267","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\/1267","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=1267"}],"version-history":[{"count":1,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/posts\/1267\/revisions"}],"predecessor-version":[{"id":1268,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/posts\/1267\/revisions\/1268"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/media\/1266"}],"wp:attachment":[{"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/media?parent=1267"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/categories?post=1267"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wallisemi.com\/vi\/wp-json\/wp\/v2\/tags?post=1267"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}