Rf and microwave PCB anga aripo kwemakore akati wandei uye anonyanya kushandiswa muindasitiri yemagetsi. Ivo vanozivikanwa kwazvo uye vakagadzirirwa kushanda pazviratidzo muMHZ kune gigahertz frequency renji. Aya maPCB akakodzera kana zvasvika kunetiweki uye kunyorera kunyorera. Pane zvikonzero zvakawanda nei PCB vagadziri vachikurudzira RF uye microwave mabhodhi ekubatanidza manyorerwo. Iwe unoda here kuziva izvo zvavari? Ichi chinyorwa chinokurukura nyaya imwe chete.

Ongororo yeRF uye microwave PCB

Kazhinji, RF uye ma microwave mabhodhi akagadzirirwa zvishandiso pakati – kune yakakwira-frequency renji kana yakakwira kupfuura 100 MHz. Aya mabhodhi anonetsa kugadzira nekuda kwekutambudzika kunetseka kubva pane kunzwisisika kwechiratidzo kusvika kugadzirisa kudziya kwekushisa. Nekudaro, aya matambudziko haaderedze kukosha kwawo. Iko kushandiswa kwezvinhu zvine zvivakwa senge yakaderera dielectric nguva dzose, yakakwira coefficient yekupisa kwekuwedzera (CTE) uye yakaderera kurasikirwa Angle tangent inobatsira kurerutsa maitiro ekuvaka. Zvigadzirwa zvePCB zvinowanzo shandiswa kuvaka RF uye microwave PCBS ndeye ceramic akazadza mahydrocarbon, PTFE ane yakarukwa kana microglass tambo, FEP, LCP, Rogers RO laminates, kuita kwakanyanya FR-4, nezvimwe.

Makomborero akasiyana eRF uye microwave PCBS

Rf uye microwave PCBS inopa zvakawanda zvinobatsira. Saka ngatitarisei kwavari vese.

Zvishandiso zvine yakaderera CTE inobatsira maPCB zvivakwa zvinogara zvakatsiga pakakwirira tembiricha. Zvakare, izvi zvinhu zvinoita kuti multilayers ive nyore kuenderana.

Nekuda kwekushandiswa kwezvinhu zvakaderera zveCTE zvinhu, mainjiniya ePBB anogona kuenzanisa nyore nyore mahwendefa eplate akawanda muzvivakwa zvakaoma.

Mari yekuungana yeRF uye microwave PCB inogona kudzikiswa kuburikidza neyeakawanda-masheya stack mamiriro. Ichi chimiro chinobatsirawo pakuita zvakakwana pcb performance.

Yakadzikama Er uye yakaderera kurasikirwa tangent inofambisa nekukurumidza kutapurirana kweakakwira frequency masaiti kuburikidza aya maPCBS. Zvakare, iyo impedance yakaderera panguva yekufambisa.

PCB mainjiniya anogona kuisa akanaka-nenamo zvinoriumba zvakanaka pane bhodhi, iyo inobatsira kuwana zvakaoma magadzirirwo.

Naizvozvo, izvi zvakanaka zvinoita kuti RF uye microwave PCBS ive yakanaka kune akasiyana maficha kusanganisira isina waya kutapurirana uye mamwe makomputa ekubatanidza masisitimu.