Jerin Abubuwan da Zane na PCB Mai Yawan Mita

A duniyar dijital mai saurin gaske ta yau, allunan da aka buga masu saurin bugawa (PCBs) su ne ginshiƙin fasahar zamani kamar sadarwa ta 5G, kewayawa ta tauraron ɗan adam, tsarin radar, kwamfuta mai ƙarfi, da na'urorin lantarki masu inganci. Ingancin ƙirar PCB mai saurin canzawa yana tasiri kai tsaye ga daidaito, inganci, da amincin tsarin lantarki gaba ɗaya.

Ga injiniyoyin ƙirar PCB, ƙwarewa a cikin ƙa'idodin ƙirar RF PCB da kuma guje wa kurakuran ƙira masu mahimmanci yana da mahimmanci. Wannan labarin ya yi zurfi cikin abubuwan da aka fi haramtawa ƙirar PCB mai yawan mita, ya bayyana dalilansu da tasirinsu, kuma ya nuna bambance-bambancen aiki tsakanin ƙira masu matsayi mafi girma da marasa aiki.

1, Tabbatattun Tsarin Hanya

✕ Yin watsi da Daidaita Halayen Impedance

Watsa sigina a cikin PCBs masu yawan mita yana buƙatar tsarin sarrafa juriya mai ƙarfi, yawanci a cikin ±5% na ƙimar manufa kamar 50Ω ko 75Ω. Rashin yin la'akari da faɗin bin diddigi, tazara, kauri na dielectric, da kayan Dk na iya haifar da katsewar impedance, wanda ke haifar da:

● Nunin sigina
● Karkatar da siffa ta raƙuman ruwa
● Ƙara yawan kuskuren bit
● Ragewar sigina mai tsanani
Misali, a cikin tashoshin tushe na 5G, rashin daidaiton impedance yana haifar da asarar fakitin bayanai, rashin haɗin kai, da kuma ƙarancin ƙwarewar mai amfani. Yi amfani da kayan aikin kwaikwayo na lantarki don ƙididdige impedance daidai, kuma koyaushe la'akari da juriyar masana'antu da dogaro da tarin bayanai.

✕ Rashin Tsarin Hanya Mai Kyau

Rashin kyawun yanke shawara kan hanyoyin zirga-zirga — kamar dogaye da yawa, kunkuntar, ko kuma cike ramuka masu tsauri — na iya haifar da:

● Jinkiri da asarar sigina saboda tsawon lokaci mai yawa
● Babban juriya da zafi daga ƙananan alamun
● Tsangwama tsakanin layukan da ke maƙwabtaka
Bi ƙa'idodin ƙira kamar:
● GABA ● FEXT A cikin hanyoyin sadarwa masu sauri (USB 3.0, HDMI), daidaiton ma'auni mai tsauri (± mil 5) da ingantattun hanyoyin hanya suna da mahimmanci don kiyaye amincin sigina.

2, Tarin Tsarin Tsarin Tari

✕ Ƙidayar Layer Ba Tare Da Daidaito Ba da Zaɓin Kayan Aiki
Ya kamata adadin layukan ya nuna sarkakiyar da'ira da buƙatun keɓewa. Yawan layukan ya ƙara farashi da sarkakiyar sarrafawa; ƙarancin layukan ya takaita sigina da tsarin wutar lantarki.

Kada ku yi sassauci kan zaɓin kayan aiki: yi amfani da kayan da ake amfani da su a wurare masu yawa kamar Rogers RO4350B tare da:

● Ƙarancin dielectric constant (Dk)
● Ƙarancin sinadarin narkewa (Df)
Amfani da daidaitattun FR4 ko substrates marasa dacewa a cikin mmWave PCBs (24–52GHz) yana haifar da:

● Asarar sigina da yawa
● Rashin daidaiton juriya
● Rage aikin watsa bayanai

✕ Duba Bukatun Rijistar Tsaye da Lamination Tsakanin Layer

Rashin daidaito tsakanin layukan da aka yi amfani da su > ±50μm na iya haifar da gajerun hanyoyi, da'irori masu buɗewa, da kuma gazawar aiki. Rashin daidaiton layi yana haifar da:

● Ragewar Tsaftacewa
● Nunin sigina
● Rashin daidaiton injina
Masu zane dole ne su yi aiki tare da masana'antun, suna ƙayyade:
● Zafin Lamination: 180–220°C
● Matsi: 5–10MPa
● Tsawon Lokaci: Minti 30–60
● Daidaiton jan ƙarfe da tarin abubuwa masu daidaitawa don rage damuwa

3, Tabbatattun Tsarin Via da Pad

✕ Ba daidai ba ta hanyar Nau'i da Girma don Sigina Masu Yawan Mita

Zaɓar ramuka maimakon makafi ko binnewa yana ƙara yawan ƙwayoyin cuta masu haifar da inductance/capacitance, wanda ke haifar da:

● Jinkirin sigina
● Rudani
● Tunani a cikin tashoshi masu sauri
Haka kuma, a guji ƙanƙanta sosai ta hanyar diamita (● Rashin daidaiton haƙa rami
● Rashin kyawun rufi
● Babban juriya
Zaɓin da ya dace yana ƙara ingancin siginar da kuma iyawar kerawa.

✕ Yin watsi da Tsarin Pad da Dacewar Soda

Dole ne a tsara madauri don hanyar da aka tsara ta solder:
● Sake haɗa kayan haɗin yana buƙatar daidaiton girman kushin don jika
● Haɗa igiyar ruwa yana buƙatar tazara don hana haɗa igiyoyi
Kayayyakin saman kamar ENIG (Electroless Nickel Immersion Gold) suna ƙara ƙarfin soldering da juriya ga iskar shaka. Rashin kyawun ƙira ko ƙarewa yana haifar da:
● gidajen sanyi
● Gadar Solder
● Iskar oxygen da da'irori masu buɗewa

4, Lalacewa, Dalilan Tushen, da Gibin Ingancin Zane

Alamomin Lalacewar da Aka Fi Sani

● Rage sigina da karkacewar siginar da kuma karkacewar siffa ta raƙuman ruwa

● Tattaunawa tsakanin alamomi

● Ragewar Layer da gajerun da'irori

● Rage karyewar da aka samu, ta hanyar toshewa, ko kuma iskar shaka a kan kushin

Tushen Dalilan

● Rashin daidaiton impedance daga lissafin alamun da ba su da kyau

● Rashin zaɓin kayan da ya dace da mitoci na RF

● Tsarin tattara bayanai mara kyau ba tare da daidaita tsari ba

● Ba a kimanta shi sosai ta hanyar ƙwayoyin cuta da juriyar haƙa rami ba

● Girman kushin bai dace da tsarin solder ba

Kwatanta Gibin Zane

5. Cikakken Farin Ciki Zai Iya Magance Duk Matsaloli

Kowace matsala ta ƙira—daga rashin daidaiton impedance da kuma tantanin da aka yi wa trace crosstalk zuwa gazawar tarin bayanai da kuma rashin kyau ta hanyar ƙira—na iya lalata aikin RF PCB. A Rich Full Joy, injiniyoyinmu na RF da ƙwararrun masana'antu suna aiki tare don:

● Tabbatar da bin ƙa'idodin ƙira don masana'antu (DFM)
● Yi amfani da kayan aikin kwaikwayo na EM na zamani
● Yi amfani da ƙwarewar kayan aiki mai yawan mita
● Samar da tsare-tsare masu yawan amfanin ƙasa, waɗanda aka shirya don samarwa
Ko don tashoshin tushe na 5G ne, tsarin radar, ko sadarwa ta tauraron dan adam, muna tabbatar da cewa PCB ɗinku mai yawan mita yana aiki da sauri, aminci, da aminci.

6, Yi Aiki Tare da Cikakken Farin Ciki: Zane Mai Wayo, Yi Aiki Mafi Kyau

Tare da shekaru da dama na ƙwarewar RF PCB, Rich Full Joy ta ƙware a fannin sarrafa siginar mita mai yawa. Muna haɗa ƙira da aka yi da kwaikwayon kwaikwayo, kimiyyar kayan aiki, da kuma masana'antu na zamani don ƙirƙirar PCBs waɗanda suka wuce mafi girman ma'aunin inganci da aiki.

Ku biyo mu don ƙarin bayani kan ƙwararru, ko ku tuntube mu don tattauna aikinku na gaba mai yawan gaske!