Prototyping Flexible PCBs Ukusebenzisa Impedance Controlled Traces

Yazisa:

Kwihlabathi lanamhlanje, apho i-miniaturization kunye nokuguquguquka zisiba zizinto ezibalulekileyo kuyilo lwe-elektroniki, imfuno yeprototyping esebenzayo yeebhodi zesekethe eziprintiweyo (PCBs) ezinemikhondo elawulwa yi-impedance ikhule kakhulu.Njengoko izixhobo zombane ziqhubeka nokuvela, abaqulunqi banomdla wokufumana iindlela ezintsha nezingabizi kakhulu zokubonisa iiPCB ezinjalo.Kule bhlog, siza kuntywila nzulu kwinkqubo yokuchwetheza ii-PCBs eziguquguqukayo ezinemikhondo elawulwa yi-impedance, siphonononga imiceli mngeni, iinketho ezikhoyo, kunye neendlela ezifanelekileyo.

1. Qonda iPCB ebhetyebhetye:

Phambi kokuphonononga kwiinkcukacha ze-PCB prototyping eguquguqukayo enomkhondo olawulwa yi-impedance, kubalulekile ukuqonda iikhonsepthi kunye neenzuzo zeePCB eziguqukayo.IiPCB eziguquguqukayo, ezikwaziwa ngokuba ziisekethe eziguquguqukayo, ziyilelwe ukuba zigobe, zigotywe, okanye zijijelwe ukonga indawo kunye nokwandisa ukuguquguquka kwizicelo ezahlukeneyo.Ubume babo obukhaphukhaphu, ukomelela kunye nokukwazi ukuziqhelanisa neendawo ezingacwangciswanga zibenza balungele amashishini afana neenqwelo, ezonyango kunye ne-aerospace.

2. Ukubaluleka kolawulo lwe-impedance:

Ulawulo lwe-impedance lubalulekile xa kuyilwa iisekethe eziphezulu zefrikhwensi njengoko iqinisekisa imfezeko yomqondiso kunye nokunciphisa ukuphazamiseka kwe-electromagnetic.Kwii-PCB eziguquguqukayo, ukugcina ulawulo lwe-impedance kubaluleke ngakumbi kuba zisesichengeni sokulahleka komqondiso kunye nokuphazamiseka okubangelwa kukugoba okanye ukugoba.Iprototyping ene-impedance-controlled traces inokunceda ukunqanda imiba enjalo, ekhokelela kwisisombululo esithembekileyo nesomeleleyo sePCB.

3. Iprototype eguquguqukayo yePCB kusetyenziswa imikhondo elawulwa yi-impedance:

Xa prototyping PCBs bhetyebhetye kunye umkhondo impedance elawulwa, abayili baneendlela ezininzi zokuqwalasela.Makhe sihlolisise iindlela ezisetyenziswa rhoqo:

A. IBhodi yeSekethe eShicileleyo (PCB) iNkampani yokuSebenza:
Ukusebenza kunye nenkampani yobuchwephesha be-PCB yenye yeendlela zokulinganisa ngokufanelekileyo ii-PCBs eziguquguqukayo ezinemikhondo elawulwa yi-impedance.Ezi nkampani zeengcali zinobuchule, izixhobo kunye namava okusingatha ubunzima obunxulumene neesekethe eziguquguqukayo.Ngokubonelela ngeefayile zoyilo eziyimfuneko kunye neenkcukacha, abaqulunqi banokufumana iiprototypes ezikumgangatho ophezulu kunye nolawulo olufunekayo lwe-impedance.

b.Iprototyping yangaphakathi:
Abaqulunqi abakhetha ulawulo olungaphezulu kwinkqubo yeprototyping banokukhetha ukwenza i-PCB ebhetyebhetye ngaphakathi endlwini.Le ndlela ifuna utyalo-mali kwizixhobo ezifanelekileyo, ezinje ngePCB ebhetyebhetye umshicileli okanye iplotter.Izixhobo zeSoftware ezilinganisa kwaye zihlalutye ulawulo lwe-impedance, njengoMyili weAltium okanye uKhozi, lunokunceda ukufezekisa umkhondo ofunekayo wokuthintela umkhondo ngexesha lenkqubo yeprototyping.

4. Ezona ndlela zilungileyo zokusebenzisa iprototyping yePCB ebhetyebhetye kusetyenziswa imikhondo elawulwa yi-impedance:

Ukuqinisekisa uyilo oluyimpumelelo lweeprototypes ze-PCB eziguquguqukayo kunye ne-impedance elawulwayo, iindlela ezifanelekileyo kufuneka zilandelwe.Nazi izikhokelo:

a.Ukulungiswa koyilo olubanzi:
Phambi kokuba baqale inkqubo yokuchwetheza, abaqulunqi kufuneka balulungiselele ngokupheleleyo uyilo lwabo, kubandakanya ukupakisha umaleko, umkhondo wobubanzi, kunye nesithuba sokufikelela kulawulo olufunekayo lwe-impedance.Kunokuba luncedo ukusebenzisa isoftware yoyilo exhasa ukubalwa kwe-impedance kunye nokulinganisa.

b.Ukukhethwa kwezinto:
Kwiiprototypes ze-PCB eziguquguqukayo ezinezikhondo ezilawulwa yi-impedance, ukukhetha izinto ezifanelekileyo kubalulekile.Ukukhetha i-substrate eguquguqukayo efana ne-polyimide kunye nelahleko yesignali ephantsi kunye neepropati ezizinzileyo ze-dielectric zinokuphucula kakhulu ukuhanjiswa kwesignali kunye nokuthembeka kwesignali jikelele.

c.Ukuqinisekiswa novavanyo:
Emva kwenqanaba leprototyping, kubalulekile ukuqinisekisa ukusebenza kunye novavanyo lolawulo lwe-impedance.Ukulinganisa ngokuchanekileyo ukungaqhubeki kokungaqhubeki ecaleni komkhondo usebenzisa izixhobo zovavanyo ezinje nge-time domain reflectometry (TDR).

Ukuququmbela:

I-Prototyping flex PCBs usebenzisa i-impedance control traces ayikho ngaphandle kwemingeni yayo, kodwa ngolwazi oluchanekileyo, izixhobo kunye neendlela, abayili banokuzisa ngempumelelo uyilo lwabo lwe-PCB oluyinyani.Nokuba usebenza nenkampani yokuchwetheza ye-PCB okanye uphonononga iinketho zeprototyping yangaphakathi, ukuqonda ukubaluleka kolawulo lokungaphumeleli kunye nokulandela ezona ndlela zilungileyo kuya kuvula indlela yezisombululo ezithembekileyo neziguquguqukayo ezihlangabezana neemfuno zeshishini le-elektroniki lanamhlanje.Ke qhubela phambili kwaye uqalise uhambo lwakho lokuchwetheza ii-PCBs eziguquguqukayo kunye nomkhondo olawulwa yi-impedance kwaye uvule amathuba angenasiphelo kumzamo wakho olandelayo woyilo lwe-elektroniki.