Kudziwa kwa Kuthamanga Kwambiri Komiti Yosindikizidwa Yozungulira

Kwa PCB yapadera yokhala ndi ma frequency apamwamba a electromagnetic, nthawi zambiri, ma frequency apamwamba amatha kufotokozedwa ngati ma frequency pamwamba pa 1GHz. Zochita zake zakuthupi, zolondola komanso zaukadaulo ndizokwera kwambiri, ndipo zimagwiritsidwa ntchito kwambiri pamakina odana ndi kugunda kwa magalimoto, makina a satana, machitidwe a wailesi ndi magawo ena. Mtengo ndi wokwera, nthawi zambiri pafupifupi yuan 1.8 pa centimita imodzi, pafupifupi 18000 yuan pa mita imodzi.
Makhalidwe a HF bolodi lozungulira gulu
1. Zofunikira zowongolera za impedance ndizovuta, ndipo kuwongolera kwa mzere kumakhala kovuta kwambiri. Kulekerera kwakukulu ndi pafupifupi 2%.
2. Chifukwa cha mbale yapadera, kumamatira kwa PTH kuyika mkuwa sikuli kwakukulu. Nthawi zambiri roughen ndi vias ndi pamwamba mothandizidwa ndi plasma mankhwala zipangizo kuonjezera adhesion wa PTH mkuwa ndi solder kukana inki.
3. Musanayambe kuwotcherera kukana, mbaleyo siingakhoze kukhala pansi, apo ayi kumamatira kudzakhala kosauka kwambiri, ndipo kumangowonongeka ndi micro etching liquid.
4. Zambiri mwa mbalezo zimapangidwa ndi zipangizo za polytetrafluoroethylene. Padzakhala m’mbali zambiri zaukali akapangidwa ndi odula wamba, kotero odula apadera amafunikira.
5. High frequency circuit board ndi gulu lapadera ladera lomwe lili ndi ma frequency a electromagnetic frequency. Nthawi zambiri, ma frequency apamwamba amatha kufotokozedwa ngati ma frequency pamwamba pa 1GHz.

Zochita zake zakuthupi, zolondola komanso zaukadaulo ndizokwera kwambiri, ndipo zimagwiritsidwa ntchito kwambiri pamakina odana ndi kugunda kwa magalimoto, makina a satana, machitidwe a wailesi ndi magawo ena.

Kusanthula mwatsatanetsatane magawo a High-Frequency Board
Kuchuluka kwa zida zamagetsi ndi njira yachitukuko, makamaka pakuwonjezeka kwa ma netiweki opanda zingwe ndi ma satellite olankhulana, zodziwitsidwa zikuyenda mwachangu komanso pafupipafupi, ndipo zinthu zolumikizirana zikuyenda molunjika pakuyimitsidwa kwa mawu, makanema ndi data pakutumiza opanda zingwe. ndi mphamvu zazikulu ndi liwiro lachangu. Chifukwa chake, m’badwo watsopano wazogulitsa umafunika mabasiketi apamwamba kwambiri. Zida zoyankhulirana monga makina a satellite ndi malo olandirira mafoni am’manja ayenera kugwiritsa ntchito ma board othamanga kwambiri. M’zaka zingapo zikubwerazi, ikuyenera kukula mwachangu, ndipo ma boardboard apamwamba kwambiri adzakhala ofunikira kwambiri.
(1) Coefficient yowonjezera matenthedwe ya gawo lapansi lachigawo cha boarder-frequency board ndi zojambula zamkuwa ziyenera kukhala zofananira. Ngati sichoncho, zojambulazo zamkuwa zidzalekanitsidwa ndikusintha kozizira komanso kotentha.
(2) Gawo laling’ono loyang’anira ma frequency board liyenera kukhala ndi madzi otsika, ndipo kuyamwa kwamadzi ochulukirapo kumayambitsa kutayika kwa dielectric ndi dielectric ikakhudzidwa ndi chinyezi.
(3) Dielectric constant (Dk) ya gawo laling’ono loyenda pafupipafupi la board liyenera kukhala laling’ono komanso lokhazikika. Nthawi zambiri, zazing’ono zimakhala bwino. Kuthamanga kwa ma siginecha kumayenderana mosagwirizana ndi muzu wapakati wa dielectric mosasinthasintha wa zinthuzo. Kuchuluka kwa dielectric nthawi zonse ndikosavuta kuchititsa kuchedwa kufalitsa ma sign.
(4) Kutayika kwa dielectric (Df) kwa gawo laling’ono lazagawo laling’ono laling’ono kuyenera kukhala kocheperako, komwe kumakhudza kwambiri kufalikira kwa chizindikiro. Zing’onozing’ono zowonongeka kwa dielectric ndizochepa, kutayika kwa chizindikiro kumakhala kochepa.
(5) Kukana kwina kwa kutentha, kukana kwamankhwala, kulimba kwamphamvu ndi kulimba kwa ma peel azinthu zamagulu amtundu wapamwamba kwambiri ziyeneranso kukhala zabwino. Nthawi zambiri, ma frequency apamwamba amatha kufotokozedwa ngati ma frequency pamwamba pa 1GHz. Pakalipano, gawo laling’ono loyang’anira dera lapamwamba lomwe limagwiritsidwa ntchito kwambiri ndi gawo la fluorine dielectric substrate, monga polytetrafluoroethylene (PTFE), yomwe nthawi zambiri imatchedwa Teflon ndipo imagwiritsidwa ntchito pamwamba pa 5GHz. Kuphatikiza apo, gawo lapansi la FR-4 kapena PPO litha kugwiritsidwa ntchito pazinthu zapakati pa 1GHz ndi 10GHz.

Pakalipano, epoxy resin, PPO resin ndi fluoro resin ndi mitundu itatu ikuluikulu ya zipangizo zamagetsi zamagetsi zomwe zimakhala zotsika mtengo kwambiri, zomwe zimakhala zotsika mtengo kwambiri, pamene utomoni wa fluoro ndi wokwera mtengo kwambiri; Poganizira zokhazikika za dielectric, kutayika kwa dielectric, kuyamwa kwamadzi ndi mawonekedwe afupipafupi, fluororesin ndiyo yabwino kwambiri, pomwe utomoni wa epoxy ndi woyipa kwambiri. Pamene mafupipafupi a ntchito ya mankhwala ndi apamwamba kuposa 10GHz, matabwa osindikizidwa a fluororesin okha angagwiritsidwe ntchito. Mwachiwonekere, ntchito ya fluororesin high-frequency substrate ndi yokwera kwambiri kuposa ya magawo ena, koma kuipa kwake ndi kusasunthika kosasunthika ndi coefficient yaikulu yowonjezera kutentha kuwonjezera pa mtengo wapamwamba. Kwa polytetrafluoroethylene (PTFE), zinthu zambiri zakuthupi (monga silika SiO2) kapena nsalu zamagalasi zimagwiritsidwa ntchito ngati kulimbikitsa zida zodzaza kuti ziwongolere magwiridwe antchito, kuti zithandizire kukhazikika kwazinthu zoyambira ndikuchepetsa kufalikira kwake.

Komanso, chifukwa maselo inertia wa PTFE utomoni palokha, si kophweka kuphatikiza ndi zojambulazo mkuwa, kotero wapadera pamwamba mankhwala chofunika kwa mawonekedwe ndi zojambulazo mkuwa. Pankhani ya mankhwala njira, mankhwala etching kapena plasma etching ikuchitika padziko polytetrafluoroethylene kuonjezera roughness pamwamba kapena kuwonjezera wosanjikiza zomatira filimu pakati zojambulazo mkuwa ndi polytetrafluoroethylene utomoni kusintha adhesion, koma zingakhudze ntchito yapakatikati. Kukula kwa gawo lonse la fluorine zochokera kumagulu apamwamba kwambiri kumafuna mgwirizano wa ogulitsa zinthu zopangira, magulu ofufuza, ogulitsa zida, opanga PCB ndi opanga zinthu zolumikizirana, Kuti apitilize kukula kwachangu. High-Frequency circuit boardm’munda uno.