With the progress of electronic technology, the complexity of PCB (yakadhindwa redunhu bhodhi), chiyero chekushandisa chine kukurumidza kukura. Designers engaged in HF PCB must have relevant basic theoretical knowledge and rich experience in THE manufacture of HF PCB. In other words, both schematic drawing and PCB design should be considered from the high-frequency working environment, so as to design a more ideal PCB.

Iyi bepa, pcb wiring, Welding ndiro uye shandisa dhizaini nzira yemhangura, kutanga kwezvose, pahwaro hwePCB wiring, wiring, tambo yesimba uye pasi wiring zvinodiwa mune fomu pepa inosuma dhizaini yeiyo Pcb wiring, yechipiri kubva padhidhi yekubatanidza uye kuzarura, pcb pad pad uye chimiro chekugadzirwa mukugadzirwa kweyakajairwa, izvo zvinodikanwa zvePCB yekugadzira maitiro mapadhi anoziviswa dhizaini yePBB solder, Finally, from the PCB copper coating skills and Settings introduced the PCB copper coating design, specific follow xiaobian to understand.

Detailed tsananguro magadzirirwo nzira pcb wiring, nomoto ikanyanya uye mhangura unhani

Pcb wiring dhizaini

Wiring ndiyo inowanzo fanirwa hf pcb dhizaini inoenderana neyakagadzika dhizaini. Cabling includes automatic cabling and manual cabling. Kazhinji, zvisinei kuti ingani mitsara yemasaini yakakosha, wiring yemanyorerwo inofanirwa kuitirwa mitsara yemasaini iyi kutanga. Mushure mekunge wiring yapera, iyo wiring yeaya masaini mitsara inofanirwa kunyatso kuongororwa uye kugadzirisa mushure mekupfuudza cheki, uyezve dzimwe tambo dzinofanirwa kungoitwa wiring. Ndokunge, iwo mubatanidzwa wemanyowani uye otomatiki wiring inoshandiswa kupedzisa PCB wiring.

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

1. Nhungamiro yewiring

The wiring of the circuit is best to adopt a full straight line according to the direction of the signal, and 45° broken line or arc curve can be used to complete the turning point, so as to reduce the external emission and mutual coupling of high-frequency signals. Iyo wiring yeakakwira frequency chiratidzo tambo inofanirwa kuve ipfupi sezvinobvira. Zvinoenderana nekuwanda kwekushanda kwedunhu, kureba kwetambo yechiratidzo kunofanirwa kusarudzwa zvine mutsindo, kuti kudzikise miganho yekuparadzira uye kudzikisa kurasikirwa kwechiratidzo. Paunenge uchigadzira mapaneru maviri, zvakanakisa kufambisa iwo maviri ari padyo akaturikidzana zvichidzika, diagonally kana kukotama kuti zvipindirane. Dzivisa kuenzana kune mumwe nemumwe, izvo zvinoderedza kupindirana kwehukama uye kubatana kweparasiti.

Yakakwira frequency chiratidzo mitsara uye yakaderera frequency chiratidzo mitsara inofanirwa kupatsanurwa nepose pazvinogona, uye yekudzivirira matanho anofanirwa kutorwa kana zvichidikanwa kudzivirira kuwiriranwa kukanganiswa. Nezvekupihwa kwechiratidzo kunogashira kushoma, kuri nyore kupindirwa nemasaini ekunze, unogona kushandisa waya yepasi kuti uite yekukomberedza kana kuita basa rakanaka repamusoro-frequency chinongedzo chekudzivirira. Parallel wiring should be avoided on the same level, otherwise distributed parameters will be introduced, which will affect the circuit. Kana zvisingadzivisike, pevhu yemhangura yakaiswa pasi inogona kuunzwa pakati pemitsetse miviri yakafanana kuti igadzire mutsetse wekuzvitsaura.

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. Chimiro chewiring

Mune pcb wiring, hushoma hupamhi hwewiring hunotsanangurwa nesimba rekunamatira pakati petambo uye insulator substrate uye simba rezvino riyerera netambo. Kana pakukora kwemhangura foil iri 0.05mm uye upamhi i1mm-1.5mm, 2A yazvino inogona kupfuudzwa. Iyo tembiricha haifanire kunge iri pamusoro pe3 ℃. Kunze kweimwe yakakosha wiring, hupamhi hweimwe wiring pane imwechete dura inofanirwa kunge yakaenzana sezvinobvira. Mune yakakura frequency frequency, iyo spacing yewiring inokanganisa saizi yekuparadzira capacitance uye inductance, uye nekudaro inokanganisa kurasikirwa kwechiratidzo, kudzikama kwedunhu uye kupindirana kwemasaini. Mukumhanyisa kumhanyisa switch yedunhu, waya spacing inokanganisa chiratidzo chekutumira nguva uye waveform mhando. Naizvozvo, iyo shoma nzvimbo yeiyo wiring inofanira kuve yakakura kudarika kana yakaenzana ne 0.5 mm. Zviri nani kushandisa yakafara mitsara yePCB wiring pese pazvinogoneka.

There should be a certain distance between the printed wire and the edge of the PCB (no less than the thickness of the plate), which is not only easy to install and machining, but also improve the insulation performance.

When wiring can only be connected around a large circle of the line, we should use the flying line, that is, directly connected with short line to reduce the interference brought by long-distance wiring.

The circuit containing magnetic sensitive elements is sensitive to the surrounding magnetic field, while the bend of wiring of high-frequency circuit is easy to radiate electromagnetic wave. If magnetic sensitive elements are placed in PCB, it should ensure that there is a certain distance between the corner of wiring and it.

Hapana crossover inobvumidzwa pane imwecheteyo wiring. For the line that may cross, can use “drill” with “wound” method to solve, let a certain lead namely from other resistance, capacitance, audion etc. device lead foot gap place “drill” past, or from the end of a certain lead that may cross “wound” past. Mune zviitiko zvakakosha apo dunhu rakanyanya kuomarara, kurerutsa dhizaini, zvakare inobvumidzwa kugadzirisa dambudziko recrossover netambo yekubatanidza.

Kana iyo yakakwira frequency dunhu ichishanda pane yakakwira frequency, iyo impedance inoenderana uye antenna mhedzisiro yeiyo wiring inofanirawo kutariswa.

Nekuti mutengi akazopedzisira achinja chibvumirano chakapfuura uye achida dudziro yeiyo interface uye kuiswa sekutsanangurwa kwazvakaitwa navo, vaitofanira kuchinja marongero acho kuenda kumufananidzo uri kurudyi. In fact, the entire PCB is only 9cm x 6cm. Zvakaoma kushandura marongero ese ebhodhi zvinoenderana nezvinodiwa nevatengi, saka chikamu chepakati chebhodhi hachina kushandurwa pakupedzisira, asi zvinongedzo zvemukati zvakashandurwa nenzira kwayo, kunyanya chinzvimbo chemabatanidzwa maviri nedudziro yemapini akagadziridzwa.

But the new layout obviously caused some trouble in the line, the original smooth line became a little messy, the length of the line increased, but also had to use a lot of holes, the difficulty of the line increased a lot.

Detailed tsananguro magadzirirwo nzira pcb wiring, nomoto ikanyanya uye mhangura unhani

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

Detailed tsananguro magadzirirwo nzira pcb wiring, nomoto ikanyanya uye mhangura unhani

3. Wiring zvinodiwa kune tambo dzemagetsi netambo dzepasi

Wedzera hupamhi hwetambo yemagetsi zvichienderana neakasiyana ekushanda azvino. Hf pcb inofanira kutora nzvimbo yakakura pasi waya uye dhizaini pamucheto wePCB kusvika pazvinogona, izvo zvinogona kudzikisira kupindirana kwechiratidzo chekunze kumatunhu; Panguva imwecheteyo, iyo yekumisikidza waya yePCB inogona kuve inofambidzana neiyo goko, kuitira kuti ivhu remagetsi rePBB iri padyo nepasi voltage. Iyo yekumisikidza modhi inofanira kusarudzwa zvinoenderana nemamiriro chaiwo acho. Zvakasiyana nedunhu repasi-frequency, tambo yekumisikidza yedhivhaji-yepamusoro inofanira kunge iri padyo kana yakawanda-poindi pasi. Iyo yekumisikidza tambo inofanirwa kuve ipfupi uye gobvu kudzikisira pasi impedance, uye inotenderwa yazvino inofanirwa kuve katatu katatu kwekushanda ikozvino. Mutauri anodzika waya inofanira kunge yakabatana nePCB simba gudzazwi rinoburitsa nhanho pevhu, usamisikidza zvekupokana.

Mukugadzira wiring kuchiri kungofanirwa kunge kuri munguva yakati wiring kukiya, kuti isadzokororazve wiring kakawanda. Kuti uvharire, mhanyisa iyo EditselectNet yekuraira kusarudza Yakavharirwa mune pre-wired zvivakwa.