Ndi kupita patsogolo kwa ukadaulo wamagetsi, zovuta za PCB (bolodi losindikizidwa), kukula kwa ntchito kukukula mwachangu. Designers engaged in HF PCB must have relevant basic theoretical knowledge and rich experience in THE manufacture of HF PCB. Mwanjira ina, zojambula zonse zojambula ndi kapangidwe ka PCB ziyenera kuganiziridwa kuchokera kumalo ogwira ntchito pafupipafupi, kuti apange PCB yabwino kwambiri.

Pepala ili, cholumikizira cha PCB, mbale yowotcherera ndikugwiritsa ntchito kapangidwe ka mkuwa, choyambirira, pamunsi pa waya wa PCB, zingwe, zingwe zamagetsi komanso zofunikira pakulumikiza pansi mwa mawonekedwe a pepala zimayambitsa kapangidwe ka Kulumikizana kwa PCB, kwachiwiri kuchokera pakumangirira ndi kabowo, kukula kwa PCB ndi mawonekedwe amapangidwe kamangidwe kake, zofunikira pakapangidwe kazipangizo za PCB zimayambitsidwa kapangidwe ka PCB, Pomaliza, kuchokera ku PCB maluso okutira mkuwa ndi Zikhazikiko adayambitsa kapangidwe ka PCB mkuwa, makamaka kutsatira xiaobian kuti mumvetse.

Mwatsatanetsatane kufotokoza kapangidwe njira ya Kulumikizana PCB, PAD kuwotcherera ndi coating kuyanika mkuwa

Kupanga zingwe za PCB

Kulumikizana ndizofunikira zonse za kapangidwe ka hf PCB kutengera mawonekedwe oyenera. Kuyika kabling kumaphatikizira makina opangira ma cabling ndi ma manual cabling. Nthawi zambiri, ngakhale mulibe mizere ingapo yayikulu yazingwe, zingwe zolumikizira pamanja ziyenera kuchitikira mizere yolumikizira iyi poyamba. Wiring ikamalizidwa, kulumikizidwa kwa mizere yolumikizira iyi kuyenera kuyang’aniridwa mosamala ndikukhazikika mukadutsa cheke, kenako zingwe zina ziyenera kulumikizidwa mosavuta. Ndiye kuti, kuphatikiza kwa zingwe zamagwiritsidwe ndi zodziwikiratu kumagwiritsidwa ntchito kumaliza kulumikiza kwa PCB.

The following aspects should be paid special attention to during the wiring of hf PCB.

1. Malangizo a zingwe

Kulumikiza kwa dera ndikwabwino kutengera mzere wathunthu molunjika molingana ndi malangizo a chizindikirocho, ndipo 45 ° mzere wosweka kapena arc curve itha kugwiritsidwa ntchito kumaliza kusinthako, kuti muchepetse kutulutsa kwakunja ndi kulumikizana kwathunthu -zizindikiro zafupipafupi. Kulumikizana kwa zingwe zamafoni pafupipafupi kuyenera kukhala kwakanthawi kochepa momwe zingathere. Malinga ndi kuchuluka kwa magwiridwe antchito a dera, kutalika kwa mzere wazizindikiro kuyenera kusankhidwa moyenera, kuti muchepetse magawo ogawa ndikuchepetsa kutayika kwa chizindikirocho. Mukamapanga mapanelo awiri, ndibwino kuyendetsa zigawo ziwiri zoyandikana mozungulira, mozungulira kapena mopindika kuti mulumikizane. Pewani kufanana wina ndi mnzake, zomwe zimachepetsa kusokonezana ndi kulumikizana kwa majeremusi.

Mizere yamagetsi yamafupipafupi ndi mizere yamagetsi yotsika kwambiri iyenera kupatulidwa momwe angathere, ndipo njira zotetezera ziyenera kutengedwa pakafunika kutetezedwa. Pazowunikira zomwe zikulandila zochepa, zosavuta kusokonezedwa ndi ma siginecha akunja, mutha kugwiritsa ntchito waya wapansi kuti muteteze kuti muuzingire kapena mugwire bwino ntchito yoteteza cholumikizira pafupipafupi. Parallel wiring should be avoided on the same level, otherwise distributed parameters will be introduced, which will affect the circuit. Ngati sizingapeweke, zojambulazo zazitsulo zamkuwa zitha kuyambitsidwa pakati pa mizere iwiri yofananayo kuti ipange mzere wodzipatula.

In the digital circuit, for differential signal lines, should be in pairs, as far as possible to make them parallel, close to some, and the length is not much different.

2. Mawonekedwe a zingwe

Mukulumikiza kwa PCB, kuchepa kwake kwa waya kumatsimikizika ndi kulumikizana kwamphamvu pakati pa waya ndi gawo lotetezera komanso mphamvu yazomwe zikuyenda kudzera pa waya. Pamene makulidwe a zojambulazo zamkuwa ndi 0.05mm ndipo m’lifupi mwake ndi 1mm-1.5mm, 2A pakadali pano imatha kupitilizidwa. Kutentha sikuyenera kukhala kopitilira 3 ℃. Kupatula pa zingwe zapadera, kutalika kwa zingwe zina pamtundu womwewo kuyenera kukhala kosasintha momwe zingathere. Munthawi yamafupipafupi, kutalika kwa zingwe kumakhudza kukula kwa magwiridwe antchito ndi kuyimitsidwa, motero zimakhudza kutayika kwa siginolo, kukhazikika kwa dera komanso kusokonezedwa ndi ma siginolo. Pakasinthidwe kothamanga kwambiri, kutalikirana kwa waya kumakhudza nthawi yolumikizirana ndi mawonekedwe amtundu wa mawonekedwe. Chifukwa chake, kuchepa kwa zingwe kumayenera kukhala kokulirapo kapena kofanana ndi 0.5 mm. Ndibwino kugwiritsa ntchito mizere yayikulu yolumikizira ma PCB ngati zingatheke.

Payenera kukhala mtunda wina pakati pa waya wosindikizidwa ndi m’mphepete mwa PCB (zosachepera makulidwe a mbale), zomwe sizophweka kukhazikitsa ndi kugwiritsira ntchito makina, komanso zimathandizira magwiridwe antchito.

Pamene zingwe zimangolumikizidwa mozungulira bwalo lalikulu lamzerewu, tiyenera kugwiritsa ntchito mzere wouluka, ndiye kuti, wolumikizidwa mwachindunji ndi mzere waufupi kuti muchepetse kusokonezedwa komwe kumabwera ndi zingwe zazitali.

Dera lomwe lili ndi maginito osazindikira limayang’anitsitsa maginito oyandikana nawo, pomwe kupindika kwa zingwe zamafupipafupi ndikosavuta kutulutsa mafunde amagetsi. Ngati zinthu zamaginito zimayikidwa mu PCB, ziyenera kuwonetsetsa kuti pali mtunda wina pakati pakona yolumikizira ndi iyo.

Palibe crossover yomwe imaloledwa pamlingo wofananawo. Pa mzere womwe ungadutse, mutha kugwiritsa ntchito “kubowola” ndi njira ya “bala” kuti muthane, lolani kutsogolera kwina kuchokera kuzinthu zina zotsutsana, kuthekera, kuyimba ndi zina zotero. mtovu wina womwe ungadutse “bala” kale. Nthawi yapadera pomwe dera limakhala lovuta kwambiri, kuti mapangidwe ake akhale osavuta, amaloledwanso kuthana ndi vuto la crossover ndikulumikiza waya.

Makina oyenda pafupipafupi akamagwira ntchito pafupipafupi, kuyerekezera kwa impedance ndi magwiridwe anthawi ya zingwe ziyenera kulingaliridwanso.

Chifukwa kasitomala pamapeto pake adasintha mgwirizano wam’mbuyomu ndipo amafuna tanthauzo la mawonekedwe ndi mayikidwe monga amafotokozera, amayenera kusintha mawonekedwe kumanja kumanja. M’malo mwake, PCB yonseyo ndi 9cm x 6cm yokha. Ndizovuta kusintha mamangidwe onse a bolodi molingana ndi zomwe makasitomala amafunikira, chifukwa chake gawo lalikulu la bolodi silinasinthidwe pamapeto pake, koma zotumphukira zidasinthidwa moyenera, makamaka momwe zolumikizira ziwirizo ndikutanthauzira zikhomo zidasinthidwa.

Koma mawonekedwe atsopanowo adadzetsa mavuto ena pamzerewu, mzere wosalala woyamba udasokonekera, kutalika kwa mzere kudakulirakulira, komanso amayenera kugwiritsa ntchito mabowo ambiri, zovuta za mzere zidakulirakulira.

Mwatsatanetsatane kufotokoza kapangidwe njira ya Kulumikizana PCB, PAD kuwotcherera ndi coating kuyanika mkuwa

It is clear from this example that layout differences can have an impact on PCB design.

Mwatsatanetsatane kufotokoza kapangidwe njira ya Kulumikizana PCB, PAD kuwotcherera ndi coating kuyanika mkuwa

3. Zofunika zolumikizira zingwe zamagetsi ndi zingwe zapansi

Lonjezerani m’lifupi mwake chingwe champhamvu malinga ndi magwiridwe antchito osiyanasiyana. Hf PCB iyenera kutengera dera lalikulu lamtambo ndi masanjidwe m’mphepete mwa PCB momwe zingathere, zomwe zingachepetse kusokoneza kwa chizindikiro chakunja kudera; Nthawi yomweyo, waya wokhazikika wa PCB ukhoza kulumikizana bwino ndi chipolopolo, kuti magetsi a PCB akhale pafupi ndi magetsi apadziko lapansi. Njira yoyikira iyenera kusankhidwa malinga ndi momwe zinthu zilili. Mosiyana ndi mayendedwe ochepera, chingwe chokhazikitsira dera loyenda pafupipafupi chikuyenera kukhala chapafupi kapena chokhazikika. Chingwe chokhazikitsira chiyenera kukhala chachifupi komanso cholimba kuti muchepetse kuyika kwapansi, ndipo pakali pano pakhale zovomerezeka nthawi zitatu. Wokamba grounding waya ayenera olumikizidwa kwa PCB mphamvu mkuzamawu linanena bungwe mlingo grounding mfundo, musati amangokakamira grounding.

Mukamagwiritsa ntchito zingwe ziyenera kukhalabe pakanthawi kocheperako, kuti musabwereze kulumikizana kangapo. Kuti muwatseke, yesani lamulo la EditselectNet kuti musankhe Zotsekedwa muzomwe zilibe waya.