Nrog rau kev txhim kho kev sib txuas lus thev naus laus zis, xov tooj cua tuav high-zaus Circuit Court board thev naus laus zis tau siv ntau thiab ntau dua, xws li: wireless pager, xov tooj ntawm tes, wireless PDA, thiab lwm yam, kev ua haujlwm ntawm xov tooj cua zaus txuas ncaj qha cuam tshuam rau qhov zoo ntawm tag nrho cov khoom. Ib qho ntawm cov yam ntxwv loj tshaj plaws ntawm cov khoom siv tes yog miniaturization, thiab kev ua haujlwm me me txhais tau tias qhov ntom ntom ntawm cov khoom muaj siab heev, uas ua rau cov khoom siv (suav nrog SMD, SMC, liab qab nti, thiab lwm yam) cuam tshuam nrog txhua lwm yam. Yog tias lub tshuab hluav taws xob cuam tshuam lub teeb liab tsis tau ua haujlwm zoo, tag nrho cov kab ke hauv kab ke yuav tsis ua haujlwm zoo. Yog li ntawd, yuav tiv thaiv thiab tiv thaiv kev cuam tshuam hluav taws xob thiab txhim kho kev sib nqus hluav taws xob tau dhau los ua lub ntsiab lus tseem ceeb hauv kev tsim qauv ntawm RF Circuit PCB. Tib lub Circuit Court, sib txawv PCB tsim qauv, nws qhov kev ua tau zoo yuav txawv heev. Daim ntawv no tham txog yuav ua li cas kom ua tau zoo tshaj plaws ntawm Circuit kom ua tiav qhov xav tau hluav taws xob sib nqus thaum siv Protel99 SE software los tsim rf Circuit PCB ntawm cov khoom lag luam.

1. Xaiv phaj

Cov txheej txheem ntawm lub rooj tsav xwm luam tawm suav nrog cov khoom organic thiab tsis muaj kuab lom. Cov khoom tseem ceeb tshaj plaws ntawm cov substrate yog dielectric tsis tu ncua ε R, kev faib tawm (lossis dielectric poob) Tan δ, thermal nthuav coefficient CET thiab nqus dej noo. ε R cuam tshuam rau Circuit impedance thiab teeb liab kis tus nqi. Rau kev siv hluav taws xob ntau zaus, kev tso cai rau kev tso cai yog thawj thiab qhov tseem ceeb tshaj plaws los txiav txim siab, thiab cov substrate uas muaj kev tso cai rau siab yuav tsum tau xaiv.

2. txheej txheem PCB tsim

Vim tias Protel99 SE software txawv ntawm Protel 98 thiab lwm yam software, cov txheej txheem ntawm PCB tsim los ntawm Protel99 SE software tau tham luv luv.

① Vim tias Protel99 SE txais yuav PROJECT database hom kev tswj hwm, uas yog cuam tshuam hauv Windows 99, yog li peb yuav tsum xub teeb tsa cov ntaub ntawv database los tswj cov phiaj xwm phiaj xwm hluav taws xob thiab txheej txheem PCB tsim.

② Tsim cov duab kos duab. Txhawm rau kom paub txog kev sib txuas hauv network, txhua qhov khoom siv yuav tsum muaj nyob hauv cov tsev qiv ntawv tivthaiv ua ntej txoj cai tsim; txwv tsis pub, cov khoom siv xav tau yuav tsum tau ua hauv SCHLIB thiab muab khaws cia rau hauv cov tsev qiv ntawv. Tom qab ntawd, koj tsuas yog hu rau cov khoom siv xav tau los ntawm cov tsev qiv ntawv tiv thaiv thiab txuas lawv raws li cov qauv tsim hauv Circuit Court.

③ Tom qab tsim cov phiaj xwm ua tiav, lub rooj sib tham tuaj yeem tsim los siv rau hauv PCB tsim.

④PCB tsim. A. CB zoo thiab txiav txim siab me me. Cov duab thiab qhov loj me ntawm PCB tau txiav txim siab raws li txoj haujlwm ntawm PCB hauv cov khoom, qhov loj thiab cov duab ntawm qhov chaw thiab kev koom tes nrog lwm qhov. Kos cov duab ntawm PCB siv PLACE TRACK cov lus txib ntawm MECHANICAL LAYER. B. Ua qhov tso qhov, qhov muag thiab cov ntsiab lus siv ntawm PCB raws li SMT xav tau. C. Cov khoom tsim tawm. Yog tias koj xav tau siv qee qhov tshwj xeeb uas tsis muaj nyob hauv cov tsev qiv ntawv tivthaiv, koj yuav tsum ua cov khoom ua ntej txheej txheem. Cov txheej txheem ua cov khoom siv hauv Protel99 SE yog qhov yooj yim. Xaiv “MAKE LIBRARY” hais kom ua hauv “DESIGN” ntawv qhia zaub mov kom nkag mus rau qhov ua lub qhov rais, thiab tom qab ntawd xaiv “NYEEM TSHIAB” hais kom ua hauv “TOOL” tshuab raj rau DESIGN cov khoom. Lub sijhawm no, tsuas yog kos tus PAD sib xws ntawm ib qho haujlwm thiab hloov nws mus rau qhov xav tau PAD (suav nrog cov duab, qhov loj me, sab hauv taub thiab Lub kaum sab xis ntawm PAD, thiab lwm yam, thiab kos lub npe tus pin sib xws ntawm PAD) ntawm TOP LAYER nrog cov lus txib ntawm PLACE PAD thiab ntxiv rau raws li cov duab thiab qhov loj ntawm cov khoom siv tiag. Tom qab ntawd siv PLACE TRACK cov lus txib kom kos qhov siab tshaj plaws ntawm cov khoom siv hauv TOP OVERLAYER, xaiv lub npe tivthaiv thiab khaws nws hauv cov tsev qiv ntawv tivthaiv. D. Tom qab cov khoom tsim, teeb tsa thiab thaiv yuav tsum tau ua. Ob ntu no yuav tham txog hauv qab no. E. Txheeb xyuas tom qab cov txheej txheem saum toj no tiav. Ntawm qhov one tes, qhov no suav nrog kev tshuaj xyuas txoj cai hauv Circuit Court, ntawm qhov tod tes, nws yog qhov tsim nyog los tshuaj xyuas qhov sib dhos thiab sib dhos ua ke. Lub hauv paus txheej txheem tuaj yeem tshuaj xyuas tus kheej lossis txiav los ntawm lub network (lub network tsim los ntawm daim duab qhia duab tuaj yeem muab piv nrog lub network tsim los ntawm PCB). F. Tom qab txheeb xyuas, khaws thiab tso tawm cov ntawv. Hauv Protel99 SE, koj yuav tsum khiav cov lus txib EXPORT hauv FILE xaiv kom txuag FILE mus rau txoj hauv kev tshwj xeeb thiab FILE (IMPORT cov lus txib yog txhawm rau Qhib FILE rau Protel99 SE). Nco tseg: Hauv Protel99 SE “FILE” xaiv “SAVE COPY AS …” Tom qab cov lus txib tau ua tiav, xaiv cov npe cov ntaub ntawv tsis pom hauv Windows 98, yog li cov ntawv tsis tuaj yeem pom hauv Tus Thawj Saib Xyuas Khoom Siv. Qhov no txawv ntawm “Txuag AS …” hauv Protel 98. Nws tsis ua haujlwm zoo ib yam nkaus.

3. Txheej txheem txheej txheem

Vim tias SMT feem ntau siv hluav taws xob cua sov ua kom sov vuam mus rau cov khoom sib txuas, cov txheej txheem ntawm cov khoom cuam tshuam rau qhov ua tau zoo ntawm cov pob qij txha txuas, thiab tom qab ntawd cuam tshuam rau cov khoom tsim tawm. Txog PCB tsim ntawm rf Circuit, kev sib nqus sib nqus xav tau tias txhua lub tshuab hluav taws xob tsis tsim hluav taws xob hluav taws xob kom deb li deb tau, thiab muaj peev xwm tiv thaiv kev cuam tshuam hluav taws xob. Yog li ntawd, kev teeb tsa ntawm cov khoom tseem cuam tshuam ncaj qha cuam tshuam rau kev cuam tshuam thiab cuam tshuam kev muaj peev xwm ntawm Circuit Court nws tus kheej, uas tseem cuam tshuam ncaj qha rau kev ua tau zoo ntawm cov qauv tsim. Yog li ntawd, hauv kev tsim ntawm RF Circuit PCB, ntxiv rau kev teeb tsa PCB zoo ib yam, peb yuav tsum txiav txim siab yuav ua li cas thiaj li txo qis kev cuam tshuam ntawm ntau qhov ntawm RF Circuit, yuav ua li cas thiaj txo kev cuam tshuam ntawm Circuit Court nws tus kheej mus rau lwm cov circuits thiab lub peev xwm tiv thaiv kev cuam tshuam ntawm Circuit Court nws tus kheej. Raws li kev paub dhau los, qhov cuam tshuam ntawm rf Circuit tsis yog nyob ntawm qhov ntsuas qhov ua tau zoo ntawm RF Circuit board xwb, tab sis kuj ntawm kev cuam tshuam nrog CPU ua haujlwm pawg thawj coj loj. Yog li ntawd, hauv PCB tsim, kev tsim nyog tsim nyog yog qhov tshwj xeeb.

Cov txheej txheem txheej txheem dav dav: cov khoom siv yuav tsum tau teeb tsa nyob rau tib qho kev coj mus kom deb li deb tau, thiab qhov tsis zoo vuam tshwm sim tuaj yeem txo qis lossis txawm tias zam tau los ntawm kev xaiv cov lus qhia ntawm PCB nkag mus rau hauv cov txheej txheem yaj yaj kiab; Raws li kev paub dhau los, qhov chaw nruab nrab ntawm cov khoom siv yuav tsum yog yam tsawg 0.5 hli kom tau raws li qhov yuav tsum tau ua ntawm cov khoom sib xyaw yaj. Yog tias qhov chaw ntawm PCB pawg thawj coj tso cai, qhov chaw nruab nrab ntawm cov khoom siv yuav tsum dav li sai tau. Rau ob chav vaj huam sib luag, ib sab yuav tsum tsim los rau SMD thiab SMC cov khoom, thiab lwm sab yog cov khoom sib cais.

Nco tseg hauv kev teeb tsa:

* Ua ntej txiav txim siab txoj haujlwm ntawm cov khoom sib cuam tshuam ntawm PCB nrog rau lwm cov laug cam PCB lossis cov txheej txheem, thiab xyuam xim rau kev sib koom tes ntawm cov khoom siv sib cuam tshuam (xws li kev taw qhia ntawm cov khoom, thiab lwm yam).

* Vim tias qhov ntim me me ntawm cov khoom siv tuav, cov khoom sib dhos tau teeb tsa kom zoo, yog li rau cov khoom loj dua, yuav tsum tau muab qhov muaj feem thib los txiav txim qhov chaw tsim nyog, thiab txiav txim siab qhov teeb meem ntawm kev sib koom ua ke.

* ua tib zoo tshuaj xyuas cov qauv hauv Circuit Court, ua cov txheej txheem thaiv Circuit Court (xws li kev hloov pauv ntau zaus hauv Circuit Court, sib xyaw Circuit thiab demodulation Circuit, thiab lwm yam), kom deb li deb tau kom cais cov teeb liab hnyav tam sim no thiab cov teeb liab tsis muaj zog tam sim no, cais cov teeb liab digital Circuit thiab analog teeb liab Circuit Court, ua tiav tib txoj haujlwm ntawm Circuit yuav tsum tau teeb tsa hauv qee yam, yog li txo qhov teeb liab lub voj; Lub network lim ntawm txhua feem ntawm Circuit yuav tsum tau txuas nrog nyob ze, yog li tsis tsuas yog txo cov hluav taws xob tuaj yeem txo qis, tab sis kuj tseem yuav muaj kev cuam tshuam cuam tshuam tuaj yeem txo qis, raws li kev tiv thaiv kev cuam tshuam kev muaj peev xwm ntawm Circuit Court.

* Pawg xov tooj ntawm tes sib txuas raws li lawv nkag siab zoo rau kev siv hluav taws xob sib nqus hauv kev siv. Cov khoom siv hauv Circuit Court uas tsis yooj yim rau kev cuam tshuam yuav tsum zam qhov cuam tshuam los ntawm kev cuam tshuam (xws li cuam tshuam los ntawm CPU ntawm lub rooj ua haujlwm cov ntaub ntawv).

4. Thaiv

Tom qab cov khoom tau teeb tsa, thaiv tau pib. Lub hauv paus ntsiab lus ntawm kev thaiv yog: nyob rau hauv qhov xwm txheej ntawm kev sib dhos qhov ntom ntom ntom ntom ntom ntuag tsim yuav tsum tau xaiv kom deb li deb tau, thiab teeb liab cov kab hluav taws xob yuav tsum yog tuab thiab nyias li sai tau, uas yog qhov cuam tshuam rau kev cuam tshuam cuam tshuam.

Txog rf Circuit, qhov tsim tsis tsim nyog ntawm teeb liab kab kev taw qhia, dav thiab kab sib nrug yuav ua rau cuam tshuam ntawm cov teeb liab teeb liab kis kab; Ib qho ntxiv, lub kaw lus lub zog siv hluav taws xob nws tus kheej kuj tseem muaj suab nrov cuam tshuam, yog li hauv kev tsim ntawm RF Circuit Circuit PCB yuav tsum raug txiav txim siab kom nkag siab, tsim nyog thaiv.

Thaum xaim, txhua txoj hlua yuav tsum nyob deb ntawm ciam teb ntawm Lub Rooj Tswjhwm Saib PCB (kwv yees li 2 hli), txhawm rau kom tsis txhob ua lossis muaj kev phom sij zais ntawm xaim tawg thaum tsim PCB pawg thawj coj saib. Cov kab hluav taws xob yuav tsum dav li sai tau kom txo tau qhov kev tiv thaiv ntawm lub voj. Nyob rau tib lub sijhawm, cov lus taw qhia ntawm txoj kab hluav taws xob thiab kab hauv av yuav tsum zoo ib yam nrog cov lus qhia ntawm kev xa cov ntaub ntawv txhawm rau txhim kho kev muaj peev xwm tiv thaiv kev cuam tshuam. Cov kab teeb liab yuav tsum luv li sai tau thiab tus naj npawb ntawm qhov yuav tsum tau txo kom deb li deb tau. Qhov kev sib txuas luv dua ntawm cov khoom sib xyaw, zoo dua, txhawm rau txo qhov kev faib khoom tsis sib xws thiab cuam tshuam hluav taws xob sib cuam tshuam ntawm ib leeg; Rau cov kab teeb liab tsis sib xws yuav tsum nyob deb ntawm ib leeg, thiab sim ua kom tsis txhob muaj kab sib luag, thiab hauv qhov zoo ntawm ob sab ntawm kev thov sib koom ua ke teeb liab kab; Kev xaim xav tau ntawm qhov chaw nyob yuav tsum yog 135 ° Lub kaum sab xis raws li qhov tsim nyog, zam kev tig lub kaum sab xis.

Cov kab txuas ncaj qha nrog lub ncoo yuav tsum tsis txhob dav heev, thiab kab yuav tsum nyob deb ntawm cov khoom sib txuas kom deb li deb tau kom tsis txhob luv luv; Qhov yuav tsum tsis txhob kos rau ntawm cov khoom, thiab yuav tsum nyob deb ntawm cov khoom sib txuas kom deb li deb tau kom tsis txhob vuam virtual, txuas mus tas li, luv Circuit Court thiab lwm yam tshwm sim hauv kev tsim khoom.

Hauv PCB tsim ntawm rf Circuit, qhov txuas txuas raug ntawm kab hluav taws xob thiab cov xov hlau hauv av yog qhov tseem ceeb tshwj xeeb, thiab tsim nyog tsim yog qhov tseem ceeb tshaj plaws txhais tau tias yuav tsum kov yeej hluav taws xob cuam tshuam. Muaj ntau qhov cuam tshuam cuam tshuam ntawm PCB tau tsim los ntawm cov khoom siv hluav taws xob thiab cov xov hlau hauv av, ntawm cov xov hlau hauv av ua rau muaj suab nrov ntau cuam tshuam.

Qhov laj thawj tseem ceeb vim li cas cov hlau hauv av yooj yim ua rau cuam tshuam hluav taws xob yog qhov cuam tshuam ntawm cov hlau hauv av. Thaum cov dej ntws hla hauv av, qhov hluav taws xob yuav tsim tawm hauv av, ua rau hauv av hauv av voj tam sim no, tsim lub voj cuam tshuam ntawm hauv av. Thaum ntau lub vojvoog sib koom ua ib qho ntawm cov xov hlau hauv av, kev sib txuas tsis sib xws tshwm sim, ua rau lub npe hu ua suab nrov hauv av. Yog li, thaum xaim xov hlau hauv av ntawm RF Circuit PCB, ua:

* Ua ntej tshaj plaws, lub Circuit Court tau muab faib ua cov thaiv, rf Circuit tuaj yeem muab faib ua ntau zaus, sib xyaw, tshem tawm, tshem tawm hauv zos thiab lwm qhov chaw, txhawm rau muab cov peev txheej siv tau rau txhua qhov kev hloov pauv hauv Circuit Court, yog li lub teeb liab tuaj yeem sib kis ntawm cov qauv sib txawv hauv Circuit Court. Tom qab ntawd nws tau suav nrog ntawm qhov chaw uas RF Circuit PCB txuas nrog hauv av, piv txwv li suav nrog ntawm lub hauv paus tseem ceeb. Txij li tsuas muaj ib qho taw qhia nkaus xwb, tsis muaj kev cuam tshuam kev sib koom ua ke thiab yog li tsis muaj teeb meem cuam tshuam kev sib cuam tshuam.

* Cov cheeb tsam digital thiab thaj chaw sib xws kom deb li deb tau hauv av xaim hluav taws xob, thiab cov av hauv av thiab cov av sib piv sib cais, thaum kawg txuas nrog lub hwj chim hauv av.

* Cov xaim av hauv txhua qhov ntawm Circuit Court yuav tsum tau them sai sai rau cov ntsiab lus ib puag ncig hauv paus ntsiab lus, txo qis lub teeb liab lub cheeb tsam, thiab cov lim dej sib txuas qhov chaw nyob ze.

* Yog tias qhov chaw tso cai, nws yog qhov zoo dua kom cais txhua qhov qauv nrog hauv av xaim kom tiv thaiv teeb liab sib txuas ua ke ntawm ib leeg.

5. xaus

Qhov tseem ceeb ntawm RF PCB tsim nyob hauv yuav ua li cas thiaj txo tau lub peev xwm hluav taws xob thiab yuav txhim kho kev tiv thaiv kev cuam tshuam li cas. Tsim nyog tsim thiab thaiv yog qhov lav ntawm DESIGNING RF PCB. Txoj hauv kev piav qhia hauv daim ntawv no yog pab txhawm rau txhim kho kev ntseeg tau ntawm RF Circuit PCB tsim, daws qhov teeb meem ntawm kev cuam tshuam hluav taws xob, thiab ua tiav lub hom phiaj ntawm kev sib nqus sib nqus.