{"id":1909,"date":"2025-08-25T02:07:24","date_gmt":"2025-08-25T02:07:24","guid":{"rendered":"https:\/\/flj-pcb.com\/?page_id=1909"},"modified":"2025-09-25T08:26:33","modified_gmt":"2025-09-25T08:26:33","slug":"high-frequency-pcb","status":"publish","type":"page","link":"https:\/\/flj-pcb.com\/vi\/pcb-manufacturer\/high-frequency-pcb\/","title":{"rendered":"B\u1ea3ng m\u1ea1ch in t\u1ea7n s\u1ed1 cao: M\u1ea5t m\u00e1t th\u1ea5p, t\u1ed1c \u0111\u1ed9 cao"},"content":{"rendered":"
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B\u1ea3ng m\u1ea1ch in t\u1ea7n s\u1ed1 cao l\u00e0 g\u00ec?<\/h2>

A B\u1ea3ng m\u1ea1ch in t\u1ea7n s\u1ed1 cao<\/a> l\u00e0 m\u1ed9t lo\u1ea1i b\u1ea3ng m\u1ea1ch in (PCB) \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c t\u00edn hi\u1ec7u t\u1ea7n s\u1ed1 \u0111i\u1ec7n t\u1eeb cao. C\u00e1c b\u1ea3ng m\u1ea1ch n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho t\u1ea7n s\u1ed1 v\u00f4 tuy\u1ebfn tr\u00ean kho\u1ea3ng 300 MHz (b\u01b0\u1edbc s\u00f3ng < 1 m) v\u00e0 t\u1ea7n s\u1ed1 vi s\u00f3ng tr\u00ean kho\u1ea3ng 3 GHz (b\u01b0\u1edbc s\u00f3ng < 0,1 m). Ch\u00fang \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t tr\u00ean n\u1ec1n v\u1eadt li\u1ec7u laminate ph\u1ee7 \u0111\u1ed3ng d\u00e0nh cho vi s\u00f3ng. Qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng m\u1ed9t s\u1ed1 c\u00f4ng \u0111o\u1ea1n ti\u00eau chu\u1ea9n c\u1ee7a PCB c\u1ee9ng ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u1eb7c bi\u1ec7t d\u00e0nh ri\u00eang cho c\u00e1c v\u1eadt li\u1ec7u n\u00e0y.<\/p>

\"High-Frequency<\/p>

V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng c\u1ee7a c\u00f4ng ngh\u1ec7, ng\u00e0y c\u00e0ng c\u00f3 nhi\u1ec1u thi\u1ebft b\u1ecb ho\u1ea1t \u0111\u1ed9ng trong d\u1ea3i t\u1ea7n s\u1ed1 vi s\u00f3ng (>1 GHz) v\u00e0 th\u1eadm ch\u00ed trong d\u1ea3i t\u1ea7n s\u1ed1 s\u00f3ng milimet (>30 GHz). \u0110i\u1ec1u n\u00e0y \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c t\u1ea7n s\u1ed1 ng\u00e0y c\u00e0ng cao v\u00e0 nhu c\u1ea7u v\u1ec1 v\u1eadt li\u1ec7u c\u0169ng t\u0103ng l\u00ean. V\u1eadt li\u1ec7u n\u1ec1n ph\u1ea3i c\u00f3 t\u00ednh ch\u1ea5t \u0111i\u1ec7n r\u1ea5t t\u1ed1t v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc cao. Khi t\u1ea7n s\u1ed1 t\u00edn hi\u1ec7u t\u0103ng l\u00ean, t\u1ed5n th\u1ea5t v\u1eadt li\u1ec7u ph\u1ea3i \u0111\u01b0\u1ee3c duy tr\u00ec \u1edf m\u1ee9c r\u1ea5t th\u1ea5p. V\u1edbi s\u1ef1 ra \u0111\u1eddi c\u1ee7a 5G, v\u1eadt li\u1ec7u t\u1ea7n s\u1ed1 cao \u0111\u00e3 tr\u1edf n\u00ean quan tr\u1ecdng h\u01a1n bao gi\u1edd h\u1ebft.<\/p>

\u01afu \u0111i\u1ec3m c\u1ee7a b\u1ea3ng m\u1ea1ch in t\u1ea7n s\u1ed1 cao<\/h1>

1. Hi\u1ec7u su\u1ea5t cao<\/strong>
C\u00e1c v\u1eadt li\u1ec7u c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i th\u1ea5p gi\u00fap gi\u1ea3m t\u1ed5n th\u1ea5t. C\u00f4ng ngh\u1ec7 gia nhi\u1ec7t c\u1ea3m \u1ee9ng hi\u1ec7n \u0111\u1ea1i v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c c\u00f3 th\u1ec3 t\u00e1c \u0111\u1ed9ng ch\u00ednh x\u00e1c v\u00e0o m\u1ee5c ti\u00eau \u0111\u1ed3ng th\u1eddi duy tr\u00ec hi\u1ec7u su\u1ea5t cao. Nh\u1eefng t\u1ea5m m\u1ea1ch n\u00e0y c\u00f2n g\u00f3p ph\u1ea7n gi\u1ea3m thi\u1ec3u ch\u1ea5t th\u1ea3i v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u1ee5c ti\u00eau b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng.<\/p>

2. T\u1ed1c \u0111\u1ed9 cao<\/strong>
T\u1ed1c \u0111\u1ed9 t\u00edn hi\u1ec7u t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi c\u0103n b\u1eadc hai c\u1ee7a h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i. H\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i c\u00e0ng th\u1ea5p th\u00ec t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eabn c\u00e0ng cao. C\u00e1c v\u1eadt li\u1ec7u \u0111\u1eb7c bi\u1ec7t gi\u00fap duy tr\u00ec h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i \u1edf m\u1ee9c th\u1ea5p v\u00e0 \u1ed5n \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y g\u00f3p ph\u1ea7n c\u1ea3i thi\u1ec7n qu\u00e1 tr\u00ecnh truy\u1ec1n t\u00edn hi\u1ec7u.<\/p>

3. Ki\u1ec3m so\u00e1t t\u1ed1t qu\u00e1 tr\u00ecnh gia nhi\u1ec7t ho\u1eb7c ch\u1ebf bi\u1ebfn<\/strong>
B\u1ea3ng m\u1ea1ch t\u1ea7n s\u1ed1 cao \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c \u0111\u00f2i h\u1ecfi ph\u1ea3i gia nhi\u1ec7t ch\u00ednh x\u00e1c c\u00e1c b\u1ed9 ph\u1eadn kim lo\u1ea1i. B\u1ea1n c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 s\u00e2u ho\u1eb7c v\u1ecb tr\u00ed gia nhi\u1ec7t. B\u1ea1n c\u00f3 th\u1ec3 t\u1eadp trung gia nhi\u1ec7t b\u1ec1 m\u1eb7t ho\u1eb7c gia nhi\u1ec7t s\u00e2u. B\u1ea1n c\u00f3 th\u1ec3 gia nhi\u1ec7t theo ki\u1ec3u t\u1eadp trung ho\u1eb7c lan t\u1ecfa. B\u1ea3ng m\u1ea1ch n\u00e0y cho ph\u00e9p \u0111i\u1ec1u khi\u1ec3n ch\u00ednh x\u00e1c.<\/p>

4. \u0110\u1ed9 b\u1ec1n cao<\/strong>
H\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i v\u00e0 v\u1eadt li\u1ec7u \u0111i\u1ec7n m\u00f4i ph\u1ee5 thu\u1ed9c v\u00e0o m\u00f4i tr\u01b0\u1eddng. \u1ede nh\u1eefng khu v\u1ef1c \u1ea9m \u01b0\u1edbt, \u0111\u1ed9 \u1ea9m c\u00f3 th\u1ec3 g\u00e2y h\u01b0 h\u1ecfng cho b\u1ea3ng m\u1ea1ch. C\u00e1c b\u1ea3ng m\u1ea1ch t\u1ea7n s\u1ed1 cao \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 h\u00fat \u1ea9m th\u1ea5p c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i t\u00e1c \u0111\u1ed9ng n\u00e0y. Ch\u00fang c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n h\u00f3a h\u1ecdc, ch\u1ed1ng \u1ea9m, ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 c\u00f3 \u0111\u1ed9 b\u1ec1n b\u00f3c t\u00e1ch cao. Nh\u1eefng \u0111\u1eb7c t\u00ednh n\u00e0y gi\u00fap ch\u00fang ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh trong c\u00e1c m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/p>

C\u00e1c v\u1eadt li\u1ec7u PCB ph\u1ed5 bi\u1ebfn d\u00f9ng cho \u1ee9ng d\u1ee5ng t\u1ea7n s\u1ed1 cao v\u00e0 t\u1ed1c \u0111\u1ed9 cao<\/h1>
Th\u01b0\u01a1ng hi\u1ec7u \/ Nh\u00e0 s\u1ea3n xu\u1ea5t<\/th>C\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m \/ Lo\u1ea1i s\u1ea3n ph\u1ea9m ti\u00eau bi\u1ec3u<\/th><\/tr><\/thead>
Rogers<\/td>RO4003, RO3003, RO4350, RO5880<\/td><\/tr>
TUC (th\u01b0\u01a1ng hi\u1ec7u Taiyao \/ TaYa ho\u1eb7c TUC)<\/td>TUC862, 872SLK, 883, 933<\/td><\/tr>
Panasonic<\/td>Megtron 4, Megtron 6<\/td><\/tr>
Isola<\/td>FR408HR, IS620, IS680<\/td><\/tr>
Nelco<\/td>N4000-13, N4000-13EPSI<\/td><\/tr>
C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t trong n\u01b0\u1edbc (Trung Qu\u1ed1c)<\/td>Dongguan Shengyi, Taizhou Wangling, Taixing Microwave<\/td><\/tr><\/tbody><\/table><\/div><\/div>

(H\u00e3y s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u m\u1eabu n\u00e0y l\u00e0m \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u. M\u1ed7i thi\u1ebft k\u1ebf c\u1ea7n l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p v\u1edbi t\u1ea7n s\u1ed1 v\u00e0 b\u1ed1 c\u1ee5c.)<\/p>

S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa b\u1ea3ng m\u1ea1ch t\u1ea7n s\u1ed1 cao v\u00e0 b\u1ea3ng m\u1ea1ch HDI<\/h1>

B\u1ea3ng m\u1ea1ch in t\u1ea7n s\u1ed1 cao (PCB) \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong radar, thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng, h\u1ec7 th\u1ed1ng ph\u00f2ng tr\u00e1nh va ch\u1ea1m \u00f4 t\u00f4, v\u1ec7 tinh vi\u1ec5n th\u00f4ng, h\u1ec7 th\u1ed1ng kh\u00f4ng d\u00e2y v\u00e0 c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c. B\u1ea3ng m\u1ea1ch HDI (High Density Interconnect) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c thi\u1ebft b\u1ecb nh\u1ecf g\u1ecdn c\u00f3 nhi\u1ec1u linh ki\u1ec7n. Trong c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf, b\u1ea3ng m\u1ea1ch HDI th\u01b0\u1eddng s\u1eed d\u1ee5ng b\u1ea3ng m\u1ea1ch hai m\u1eb7t.<\/p>

M\u1ed9t b\u1ea3ng m\u1ea1ch t\u1ea7n s\u1ed1 cao \u0111\u00f2i h\u1ecfi m\u1ee9c \u0111\u1ed9 ki\u1ec3m so\u00e1t quy tr\u00ecnh v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c r\u1ea5t cao. Th\u00f4ng th\u01b0\u1eddng, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u v\u1edbi v\u1eadt li\u1ec7u FR-4 (epoxy th\u1ee7y tinh), nh\u01b0ng c\u00e1c b\u1ea3ng m\u1ea1ch t\u1ea7n s\u1ed1 cao th\u1ef1c s\u1ef1 l\u1ea1i s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u composite \u0111\u1eb7c bi\u1ec7t. B\u1ea3ng m\u1ea1ch ph\u1ea3i c\u00f3 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i nh\u1ecf v\u00e0 \u1ed5n \u0111\u1ecbnh, t\u1ed5n th\u1ea5t \u0111i\u1ec7n m\u00f4i th\u1ea5p, \u0111\u1ed9 h\u1ea5p th\u1ee5 n\u01b0\u1edbc th\u1ea5p, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t.<\/p>

B\u1ea3ng m\u1ea1ch HDI s\u1eed d\u1ee5ng c\u00e1c l\u1ed7 vi m\u1ea1ch \u1ea9n (micro blind vias) \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1eadt \u0111\u1ed9 \u0111\u1ecbnh tuy\u1ebfn cao. B\u1ea3ng m\u1ea1ch n\u00e0y c\u00f3 h\u1ec7 th\u1ed1ng \u0111\u1ecbnh tuy\u1ebfn b\u00ean trong v\u00e0 b\u00ean ngo\u00e0i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i th\u00f4ng qua qu\u00e1 tr\u00ecnh khoan v\u00e0 m\u1ea1. HDI \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh cho c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn. M\u1ed9t s\u1ed1 thi\u1ebft k\u1ebf HDI s\u1eed d\u1ee5ng c\u00e1c m\u00f4-\u0111un song song d\u1ea1ng m\u00f4-\u0111un v\u00e0 h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n DSP m\u1ea1nh m\u1ebd \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1c t\u00ednh n\u0103ng v\u1ec1 ngu\u1ed3n \u0111i\u1ec7n v\u00e0 t\u1ea3i.<\/p>

C\u00e1c lo\u1ea1i \/ Ph\u00e2n lo\u1ea1i b\u1ea3ng m\u1ea1ch t\u1ea7n s\u1ed1 cao<\/h1>

D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn v\u00e0 m\u1ed9t s\u1ed1 l\u01b0u \u00fd v\u1ec1 quy tr\u00ecnh x\u1eed l\u00fd:<\/p>

1. V\u1eadt li\u1ec7u nhi\u1ec7t r\u1eafn ch\u1ee9a b\u1ed9t (ch\u1ee9a g\u1ed1m)<\/strong><\/p>