Cognition yeHigh-Frequency Printed Circuts Board

Kuziva kwe Yakakwira-Kakawanda Yakadhindwa Circuts Board

Kune yakakosha PCB ine yakakwira electromagnetic frequency, kazhinji kutaura, yakakwirira frequency inogona kutsanangurwa sefrequency pamusoro pe1GHz. Kuita kwayo kwemuviri, kurongeka uye tekinoroji paramita zvakakwirira kwazvo, uye zvinowanzoshandiswa mumotokari anti-collision systems, setiraiti masisitimu, redhiyo masisitimu uye mamwe minda. Mutengo wacho wakakwira, kazhinji unosvika 1.8 yuan paskweya centimita, ingangoita 18000 yuan paskweya mita.
Hunhu hweHF bhodhi redunhu bhodhi
1. Iyo impedance control zvinodiwa zvakasimba, uye mutsara wehupamhi hutongi hwakanyanya. The general kushivirira inenge 2%.
2. Pamusana peplate yakakosha, kusungirirwa kwePTH copper deposition haisi yakakwirira. Zvinowanzodikanwa roughen vias uye pamusoro nerubatsiro plasma kurapwa midziyo kuwedzera adhesion PTH mhangura uye solder kuramba ingi.
3. Pamberi pekupikisa welding, ndiro yacho haigoni kuve pasi, kana zvisina kudaro kunamatira kuchava kwakashata zvikuru, uye kunogona kuomeswa chete ne micro etching liquid.
4. Mazhinji mahwendefa anogadzirwa ne polytetrafluoroethylene zvinhu. Pachange paine mipendero yakawanda yakakasharara kana ichinge yakaumbwa nevaya vanocheka kugaya, saka vacheki vakasarudzika vanodiwa.
5. High frequency circuit board ibhodi yakakosha yedunhu ine high electromagnetic frequency. Kazhinji kutaura, yakakwirira frequency inogona kutsanangurwa seiyo frequency pamusoro pe1GHz.

Kuita kwayo kwemuviri, kurongeka uye tekinoroji paramita zvakakwirira kwazvo, uye zvinowanzoshandiswa mumotokari anti-collision systems, setiraiti masisitimu, redhiyo masisitimu uye mamwe minda.

Detailed wongororo yeHigh-Frequency Board parameters
High frequency yemidziyo yemagetsi inzira yekusimudzira, kunyanya nekukura kuri kuita mawireless network uye setiraiti kutaurirana, zvigadzirwa zveruzivo zviri kuenda kumhanyiro yepamusoro uye frequency yakakwira, uye zvigadzirwa zvekutaurirana zviri kufamba zvichienda kune kumira kwezwi, vhidhiyo uye data yekutumira isina waya. nehukuru hukuru uye nekukurumidza kukurumidza. Naizvozvo, chizvarwa chitsva chezvigadzirwa zvinoda yakakwira-frequency baseboard. Zvigadzirwa zvekutaurirana senge setiraiti masisitimu uye nharembozha inogamuchira base zviteshi zvinofanirwa kushandisa yakakwirira-frequency circuit board. Mumakore mashoma anotevera, inosungirwa kukura nekukurumidza, uye yakakwirira-frequency baseboard ichave iri kudiwa zvikuru.
(1) Iyo yekupisa yekuwedzera coefficient ye-high-frequency circuit board substrate uye foil yemhangura inofanira kuenderana. Kana zvisina kudaro, foil yemhangura ichaparadzaniswa mukugadzirisa kutonhora uye kuchinja kunopisa.
(2) High frequency circuit board substrate inofanira kunge iine mvura yakadzika, uye kunyura kwemvura yakakwirira kunokonzera dielectric kugara uye kurasikirwa kwe dielectric kana ichinge yakanganiswa nehunyoro.
(3) Iyo dielectric nguva dzose (Dk) ye-high-frequency circuit board substrate inofanira kuva duku uye yakagadzikana. Kazhinji kutaura, zviduku ndizvo zviri nani. Chiyero chekufambiswa kwechiratidzo chakapesana chakaenzana neskweya mudzi weiyo dielectric nguva dzose yezvinhu. Yakakwira dielectric kugara iri nyore kukonzeresa kunonoka kutapurirana kwechiratidzo.
(4) Dielectric kurasikirwa (Df) ye-high-frequency circuit board substrate zvinhu zvinofanira kuva zviduku, izvo zvinonyanya kukanganisa kunaka kwekufambisa kwechiratidzo. Iyo diki iyo dielectric kurasikirwa ndeye, iyo idiki yekurasikirwa kwechiratidzo ndeye.
(5) Kumwe kupisa kwekudzivirira, makemikari kuramba, simba rekuita uye kusvuura simba repamusoro-frequency circuit board substrate zvinhu zvinofanirawo kuva zvakanaka. Kazhinji kutaura, yakakwirira frequency inogona kutsanangurwa sefrequency pamusoro pe1GHz. Parizvino, iyo yepamusoro-frequency circuit board substrate inonyanya kushandiswa ndiyo fluorine dielectric substrate, yakadai sepolytetrafluoroethylene (PTFE), iyo inowanzonzi Teflon uye inowanzo shandiswa pamusoro pe5GHz. Mukuwedzera, FR-4 kana PPO substrate inogona kushandiswa kune zvigadzirwa pakati pe1GHz ne10GHz.

Parizvino, epoxy resin, PPO resin uye fluoro resin ndiwo matatu makuru emhando yepamusoro-frequency circuit board substrate zvinhu, pakati peiyo epoxy resin ndiyo yakachipa, nepo fluoro resin ndiyo inodhura zvakanyanya; Tichifunga nezve dielectric kugara, kurasikirwa kwedielectric, kunyura kwemvura uye frequency maitiro, fluororesin ndiyo yakanyanya kunaka, nepo epoxy resin ndiyo yakaipisisa. Kana kuwanda kwekushandiswa kwechigadzirwa kwakakwira kupfuura 10GHz, mabhodhi akadhindwa efluororesin chete anogona kushandiswa. Zviripachena, kuita kwefluororesin yakakwira-frequency substrate yakakwira zvakanyanya kupfuura yemamwe ma substrates, asi zvisungo zvayo hazvina kunaka kusimba uye yakakura yekupisa yekuwedzera coefficient mukuwedzera kune yakakwira mutengo. Kune polytetrafluoroethylene (PTFE), nhamba huru yezvinhu inorganic (senge silica SiO2) kana girazi jira rinoshandiswa sekusimbisa mafirita zvinhu kuvandudza mashandiro, kuitira kuvandudza kuomarara kweiyo base zvinhu uye kuderedza kuwedzera kwayo kupisa.

Uye zvakare, nekuda kweiyo molecular inertia yePTFE resin pachayo, hazvisi nyore kusanganisa nemhangura foil, saka yakakosha kurapwa kwepamusoro kunodiwa kune iyo interface ine foil yemhangura. Nezve nzira dzekurapa, kemikari etching kana plasma etching inoitwa pamusoro pe polytetrafluoroethylene kuti iwedzere kushata kwepamusoro kana kuwedzera dhizaini yekunamatira firimu pakati pemhangura foil uye polytetrafluoroethylene resin kuvandudza kunamatira, asi inogona kuve nemhedzisiro kushanda kwepakati. Kuvandudzwa kweiyo fluorine yakavakirwa yakakwira-frequency board substrate kunoda kubatana kwevatengesi vezvinhu zvakasvibiswa, zvikamu zvekutsvagisa, vatengesi vemidziyo, vagadziri vePCB nevagadziri vezvigadzirwa zvekutaurirana, Kuti vafambirane nekukurumidza High-Frequency circuit boards mumunda uyu.