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PCB在设计布线中的3种特殊走线技巧

* 激流快艇 : * 激流快艇 : admin * 激流快艇时间 : 2019-08-14 * 浏览 :

PCB设计布线(Layout)的好坏将直接影响到整个系统的性能,大多数高速的设计理论也要最终经过 Layout 得以实现并验证,由此可见,布线在高速 PCB 设计中是至关重要的。下面将针对实际布线中可能遇到的一些情况,分析其合理性,并给出一些比较优化的走线策略。

微信截图_20190814110331.png

ZHUYAOCONGZHIJIAOZOUXIAN,CHAFENZOUXIAN,SHEXINGXIANDENGSANGEFANGMIANLAICHANSHU。


1.ZHIJIAOZOUXIAN


ZHIJIAOZOUXIANYIBANSHIPCBBUXIANZHONGYAOQIUJINLIANGBIMIANDEQINGKUANG,YEJIHUCHENGWEIHENGLIANGBUXIANHAOHUAIDEBIAOZHUNZHIYI,NEIMEZHIJIAOZOUXIANJIUJINGHUIDUIXINHAOCHUANSHUCHANSHENGDUODADEYINGXIANGNI?CONGYUANLISHANGSHUO,ZHIJIAOZOUXIANHUISHICHUANSHUXIANDEXIANKUANFASHENGBIANHUA,ZAOCHENGZUKANGDEBULIANXU。QISHIBUGUANGSHIZHIJIAOZOUXIAN,DUNJIAO,RUIJIAOZOUXIANDOUKENENGHUIZAOCHENGZUKANGBIANHUADEQINGKUANG。


ZHIJIAOZOUXIANDEDUIXINHAODEYINGXIANGJIUSHIZHUYAOTIXIANZAISANGEFANGMIAN:


YISHIGUAIJIAOKEYIDENGXIAOWEICHUANSHUXIANSHANGDERONGXINGFUZAI,JIANHUANSHANGSHENGSHIJIAN;


ERSHIZUKANGBULIANXUHUIZAOCHENGXINHAODEFANSHE;


SANSHIZHIJIAOJIANDUANCHANSHENGDEEMI。


CHUANSHUXIANDEZHIJIAODAILAIDEJISHENGDIANRONGKEYIYOUXIAMIANZHEIGEJINGYANGONGSHILAIJISUAN:


C=61W(Er)1/2/Z0


ZAISHANGSHIZHONG,C JIUSHIZHIGUAIJIAODEDENGXIAODIANRONG(DANWEI:pF),WZHIZOUXIANDEKUANDU(DANWEI:inch),εrZHIJIEZHIDEJIEDIANCHANGSHU,Z0JIUSHICHUANSHUXIANDETEZHENGZUKANG。JUGELIZI,DUIYUYIGE4MilsDE50OUMUCHUANSHUXIAN(εrWEI4.3)LAISHUO,YIGEZHIJIAODAILAIDEDIANRONGLIANGDAGAIWEI0.0101pF,JINERKEYIGUSUANYOUCIYINQIDESHANGSHENGSHIJIANBIANHUALIANG:


T10-90%=2.2*C*Z0/2 = 2.2*0.0101*50/2 = 0.556ps


TONGGUOJISUANKEYIKANCHU,ZHIJIAOZOUXIANDAILAIDEDIANRONGXIAOYINGSHIJIQIWEIXIAODE。


YOUYUZHIJIAOZOUXIANDEXIANKUANZENGJIA,GAICHUDEZUKANGJIANGJIANXIAO,YUSHIHUICHANSHENGYIDINGDEXINHAOFANSHEXIANXIANG,WOMENKEYIGENJUCHUANSHUXIANZHANGJIEZHONGTIDAODEZUKANGJISUANGONGSHILAISUANCHUXIANKUANZENGJIAHOUDEDENGXIAOZUKANG,RANHOUGENJUJINGYANGONGSHIJISUANFANSHEXISHU:


ρ=(Zs-Z0)/(Zs+Z0)


YIBANZHIJIAOZOUXIANDAOZHIDEZUKANGBIANHUAZAI7%-20%ZHIJIAN,YINERFANSHEXISHUZUIDAWEI0.1ZUOYOU。ERQIE,KEYIKANDAO,ZAIW/2XIANZHANGDESHIJIANNEICHUANSHUXIANZUKANGBIANHUADAOZUIXIAO,ZAIJINGGUOW/2SHIJIANYOUHUIFUDAOZHENGCHANGDEZUKANG,ZHENGGEFASHENGZUKANGBIANHUADESHIJIANJIDUAN,WANGWANGZAI10ps ZHINEI,ZHEIYANGKUAIERQIEWEIXIAODEBIANHUADUIYIBANDEXINHAOCHUANSHULAISHUOJIHUSHIKEYIHULVEDE。

HENDUORENDUIZHIJIAOZOUXIANDOUYOUZHEIYANGDELIJIE,RENWEIJIANDUANRONGYIFASHEHUOJIESHOUDIANCIBO,CHANSHENG EMI,ZHEIYECHENGWEIXUDUORENRENWEIBUNENGZHIJIAOZOUXIANDELIYOUZHIYI。RANERHENDUOSHIJICESHIDEJIEGUOXIANSHI,ZHIJIAOZOUXIANBINGBUHUIBIZHIXIANCHANSHENGHENMINGXIANDEEMI。YEXUMUQIANDEYIQIXINGNENG,CESHISHUIPINGZHIYUELECESHIDEJINGQUEXING,DANZHISHAOSHUOMINGLEYIGEWENTI,ZHIJIAOZOUXIANDEFUSHEYIJINGXIAOYUYIQIBENSHENDECELIANGWUCHA。


ZONGDESHUOLAI,ZHIJIAOZOUXIANBINGBUSHIXIANGXIANGZHONGDENEIMEKEPA。ZHISHAOZAIGHzYIXIADEYINGYONGZHONG,QICHANSHENGDERENHEZHURUDIANRONG,FANSHE,EMIDENGXIAOYINGZAITDRCESHIZHONGJIHUTIXIANBUCHULAI,GAOSUPCBSHEJIGONGCHENGSHIDEZHONGDIANHAISHIYINGGAIFANGZAIBUJU,DIANYUAN/DISHEJI,ZOUXIANSHEJI,GUOKONGDENGQITAFANGMIAN。DANGRAN,JINGUANZHIJIAOZOUXIANDAILAIDEYINGXIANGBUSHIHENYANZHONG,DANBINGBUSHISHUOWOMENYIHOUDOUKEYIZOUZHIJIAOXIAN,ZHUYIXIJIESHIMEIGEYOUXIUGONGCHENGSHIBIBEIDEJIBENSUZHI,ERQIE,SUIZHESHUZIDIANLUDEFEISUFAZHAN,PCBGONGCHENGSHICHULIDEXINHAOPINLVYEHUIBUDUANTIGAO,DAO10GHzYISHANGDERFSHEJILINGYU,ZHEIXIEXIAOXIAODEZHIJIAODOUKENENGCHENGWEIGAOSUWENTIDEZHONGDIANDUIXIANG。


2.CHAFENZOUXIAN


CHAFENXINHAO(Differential Signal)ZAIGAOSUDIANLUSHEJIZHONGDEYINGYONGYUELAIYUEGUANGFAN,DIANLUZHONGZUIGUANJIANDEXINHAOWANGWANGDOUYAOCAIYONGCHAFENJIEGOUSHEJI,SHENMELINGTAZHEIMEBEISHOUQINGLAINI?ZAIPCBSHEJIZHONGYOURUHENENGBAOZHENGQILIANGHAODEXINGNENGNI?DAIZHEZHEILIANGGEWENTI,WOMENJINXINGXIAYIBUFENDETAOLUN。


HEWEICHAFENXINHAO?TONGSUDISHUO,JIUSHIQUDONGDUANFASONGLIANGGEDENGZHI、FANXIANGDEXINHAO,JIESHOUDUANTONGGUOBIJIAOZHEILIANGGEDIANYADECHAZHILAIPANDUANLUOJIZHUANGTAI“0”HAISHI“1”。ERCHENGZAICHAFENXINHAODENEIYIDUIZOUXIANJIUCHENGWEICHAFENZOUXIAN。


CHAFENXINHAOHEPUTONGDEDANDUANXINHAOZOUXIANXIANGBI,ZUIMINGXIANDEYOUSHITIXIANZAIYIXIASANGEFANGMIAN:


a.KANGGANRAONENGLIQIANG,YINWEILIANGGENCHAFENZOUXIANZHIJIANDEOUHEHENHAO,DANGWAIJIECUNZAIZAOSHENGGANRAOSHI,JIHUSHITONGSHIBEIOUHEDAOLIANGTIAOXIANSHANG,ERJIESHOUDUANGUANXINDEZHISHILIANGXINHAODECHAZHI,SUOYIWAIJIEDEGONGMOZAOSHENGKEYIBEIWANQUANDIXIAO。


b.NENGYOUXIAOYIZHI EMI,TONGYANGDEDAOLI,YOUYULIANGGENXINHAODEJIXINGXIANGFAN,TAMENDUIWAIFUSHEDEDIANCICHANGKEYIXIANGHUDIXIAO,OUHEDEYUEJINMI,XIEFANGDAOWAIJIEDEDIANCINENGLIANGYUESHAO。


c.SHIXUDINGWEIJINGQUE,YOUYUCHAFENXINHAODEKAIGUANBIANHUASHIWEIYULIANGGEXINHAODEJIAODIAN,ERBUXIANGPUTONGDANDUANXINHAOYIKAOGAODILIANGGEYUZHIDIANYAPANDUAN,YINERSHOUGONGYI,WENDUDEYINGXIANGXIAO,NENGJIANGDISHIXUSHANGDEWUCHA,TONGSHIYEGENGSHIHEYUDIFUDUXINHAODEDIANLU。MUQIANLIUXINGDELVDS(low voltage differential signaling)JIUSHIZHIZHEIZHONGXIAOZHENFUCHAFENXINHAOJISHU。


DUIYUPCBGONGCHENGSHILAISHUO,ZUIGUANZHUDEHAISHIRUHEQUEBAOZAISHIJIZOUXIANZHONGNENGWANQUANFAHUICHAFENZOUXIANDEZHEIXIEYOUSHI。YEXUZHIYAOSHIJIECHUGUOLayoutDERENDOUHUILEJIECHAFENZOUXIANDEYIBANYAOQIU,NEIJIUSHI“DENGZHANG、DENGJU”。DENGZHANGSHIWEILEBAOZHENGLIANGGECHAFENXINHAOSHIKEBAOCHIXIANGFANJIXING,JIANSHAOGONGMOFENLIANG;DENGJUZEZHUYAOSHIWEILEBAOZHENGLIANGZHECHAFENZUKANGYIZHI,JIANSHAOFANSHE。“JINLIANGKAOJINYUANZE”YOUSHIHOUYESHICHAFENZOUXIANDEYAOQIUZHIYI。DANSUOYOUZHEIXIEGUIZEDOUBUSHIYONGLAISHENGBANYINGTAODE,BUSHAOGONGCHENGSHISIHUHAIBULEJIEGAOSUCHAFENXINHAOCHUANSHUDEBENZHI。 XIAMIANZHONGDIANTAOLUNYIXIAPCBCHAFENXINHAOSHEJIZHONGJIGECHANGJIANDEWUQU。


WUQUYI:RENWEICHAFENXINHAOBUXUYAODIPINGMIANZUOWEIHUILIULUJING,HUOZHERENWEICHAFENZOUXIANBICIWEIDUIFANGTIGONGHUILIUTUJING。ZAOCHENGZHEIZHONGWUQUDEYUANYINSHIBEIBIAOMIANXIANXIANGMIHUO,HUOZHEDUIGAOSUXINHAOCHUANSHUDEJILIRENSHIHAIBUGOUSHENRU。JIESHOUDUANDEJIEGOUKEYIKANDAO,JINGTIGUANQ3,Q4 DEFASHEJIDIANLIUSHIDENGZHI,FANXIANGDE,TAMENZAIJIEDICHUDEDIANLIUZHENGHAOXIANGHUDIXIAO(I1=0),YINERCHAFENDIANLUDUIYULEISIDIDANYIJIQITAKENENGCUNZAIYUDIANYUANHEDIPINGMIANSHANGDEZAOYINXINHAOSHIBUMINGANDE。DIPINGMIANDEBUFENHUILIUDIXIAOBINGBUDAIBIAOCHAFENDIANLUJIUBUYICANKAOPINGMIANZUOWEIXINHAOFANHUILUJING,QISHIZAIXINHAOHUILIUFENXISHANG,CHAFENZOUXIANHEPUTONGDEDANDUANZOUXIANDEJILISHIYIZHIDE,JIGAOPINXINHAOZONGSHIYANZHEDIANGANZUIXIAODEHUILUJINXINGHUILIU,ZUIDADEQUBIEZAIYUCHAFENXIANCHULEYOUDUIDIDEOUHEZHIWAI,HAICUNZAIXIANGHUZHIJIANDEOUHE,NAYIZHONGOUHEQIANG,NEIYIZHONGJIUCHENGWEIZHUYAODEHUILIUTONGLU。DANDUANXINHAOHECHAFENXINHAODEDICICHANGFENBU。

ZAIPCBDIANLUSHEJIZHONG,YIBANCHAFENZOUXIANZHIJIANDEOUHEJIAOXIAO,WANGWANGZHIZHAN10~20%DEOUHEDU,GENGDUODEHAISHIDUIDIDEOUHE,SUOYICHAFENZOUXIANDEZHUYAOHUILIULUJINGHAISHICUNZAIYUDIPINGMIAN。DANGDIPINGMIANFASHENGBULIANXUDESHIHOU,WUCANKAOPINGMIANDEQUYU,CHAFENZOUXIANZHIJIANDEOUHECAIHUITIGONGZHUYAODEHUILIUTONGLU,JINGUANCANKAOPINGMIANDEBULIANXUDUICHAFENZOUXIANDEYINGXIANGMEIYOUDUIPUTONGDEDANDUANZOUXIANLAIDEYANZHONG,DANHAISHIHUIJIANGDICHAFENXINHAODEZHILIANG,ZENGJIA EMI,YAOJINLIANGBIMIAN。YEYOUXIESHEJIRENYUANRENWEI,KEYIQUDIAOCHAFENZOUXIANXIAFANGDECANKAOPINGMIAN,YIYIZHICHAFENCHUANSHUZHONGDEBUFENGONGMOXINHAO,DANCONGLILUNSHANGKANZHEIZHONGZUOFASHIBUKEQUDE,ZUKANGRUHEKONGZHI?BUJIGONGMOXINHAOTIGONGDIZUKANGHUILU,SHIBIHUIZAOCHENGEMIFUSHE,ZHEIZHONGZUOFABIDAYULI。


WUQUER:RENWEIBAOCHIDENGJIANJUBIPIPEIXIANZHANGGENGZHONGYAO。ZAISHIJIDEPCBBUXIANZHONG,WANGWANGBUNENGTONGSHIMANZUCHAFENSHEJIDEYAOQIU。YOUYUGUANJIAOFENBU,GUOKONG,YIJIZOUXIANKONGJIANDENGYINSUCUNZAI,BIXUTONGGUOSHIDANGDERAOXIANCAINENGDADAOXIANZHANGPIPEIDEMUDE,DANDAILAIDEJIEGUOBIRANSHICHAFENDUIDEBUFENQUYUWUFAPINGXING,ZHEISHIHOUWOMENGAIRUHEQUSHENI?ZAIXIAJIELUNZHIQIANWOMENXIANKANKANXIAMIANYIGEFANGZHENJIEGUO。


CONGSHANGMIANDEFANGZHENJIEGUOKANLAI,FANGAN 1 HEFANGAN 2 BOXINGJIHUSHIZHONGHEDE,YEJIUSHISHUO,JIANJUBUDENGZAOCHENGDEYINGXIANGSHIWEIHUQIWEIDE,XIANGBIJIAOERYAN,XIANZHANGBUPIPEIDUISHIXUDEYINGXIANGYAODADEDUO。ZAICONGLILUNFENXILAIKAN,JIANJUBUYIZHISUIRANHUIDAOZHICHAFENZUKANGFASHENGBIANHUA,DANYINWEICHAFENDUIZHIJIANDEOUHEBENSHENJIUBUXIANZHU,SUOYIZUKANGBIANHUAFANWEIYESHIHENXIAODE,TONGCHANGZAI10%YINEI,ZHIXIANGDANGYUYIGEGUOKONGZAOCHENGDEFANSHE,ZHEIDUIXINHAOCHUANSHUBUHUIZAOCHENGMINGXIANDEYINGXIANG。ERXIANZHANGYIDANBUPIPEI,CHULESHIXUSHANGHUIFASHENGPIANYI,HAIJICHAFENXINHAOZHONGYINRULEGONGMODECHENGFEN,JIANGDIXINHAODEZHILIANG,ZENGJIALEEMI。


KEYIZHEIMESHUO,PCB CHAFENZOUXIANDESHEJIZHONGZUIZHONGYAODEGUIZEJIUSHIPIPEIXIANZHANG,QITADEGUIZEDOUKEYIGENJUSHEJIYAOQIUHESHIJIYINGYONGJINXINGLINGHUOCHULI。


WUQUSAN:RENWEICHAFENZOUXIANYIDINGYAOKAODEHENJIN。RANGCHAFENZOUXIANKAOJINWUFEISHIWEILEZENGQIANGTAMENDEOUHE,JIKEYITIGAODUIZAOSHENGDEMIANYILI,HAINENGCHONGFENLIYONGCICHANGDEXIANGFANJIXINGLAIDIXIAODUIWAIJIEDEDIANCIGANRAO。SUISHUOZHEIZHONGZUOFAZAIDADUOSHUQINGKUANGXIASHIFEICHANGYOULIDE,DANBUSHIJUEDUIDE,RUGUONENGBAOZHENGRANGTAMENDEDAOCHONGFENDEPINGBI,BUSHOUWAIJIEGANRAO,NEIMEWOMENYEJIUBUXUYAOZAIRANGTONGGUOBICIDEQIANGOUHEDADAOKANGGANRAOHEYIZHIEMIDEMUDELE。RUHECAINENGBAOZHENGCHAFENZOUXIANJUYOULIANGHAODEGELIHEPINGBINI?ZENGDAYUQITAXINHAOZOUXIANDEJIANJUSHIZUIJIBENDETUJINGZHIYI,DIANCICHANGNENGLIANGSHISUIZHEJULICHENGPINGFANGGUANXIDIJIANDE,YIBANXIANJIANJUCHAOGUO4 BEIXIANKUANSHI,TAMENZHIJIANDEGANRAOJIUJIQIWEIRUOLE,JIBENKEYIHULVE。CIWAI,TONGGUODIPINGMIANDEGELIYEKEYIQIDAOHENHAODEPINGBIZUOYONG,ZHEIZHONGJIEGOUZAIGAOPINDE(10GYISHANG)ICFENGZHUANGPCB SHEJIZHONGJINGCHANGHUIYONGCAIYONG,BEICHENGWEICPWJIEGOU,KEYIBAOZHENGYANGEDECHAFENZUKANGKONGZHI(2Z0)。


CHAFENZOUXIANYEKEYIZOUZAIBUTONGDEXINHAOCENGZHONG,DANYIBANBUJIANYIZHEIZHONGZOUFA,YINWEIBUTONGDECENGCHANSHENGDEZHURUZUKANG、GUOKONGDECHABIEHUIPOHUAICHAMOCHUANSHUDEXIAOGUO,YINRUGONGMOZAOSHENG。CIWAI,RUGUOXIANGLINLIANGCENGOUHEBUGOUJINMIDEHUA,HUIJIANGDICHAFENZOUXIANDIKANGZAOSHENGDENENGLI,DANRUGUONENGBAOCHIHEZHOUWEIZOUXIANSHIDANGDEJIANJU,CHUANRAOJIUBUSHIGEWENTI。ZAIYIBANPINLV(GHz YIXIA),EMIYEBUHUISHIHENYANZHONGDEWENTI,SHIYANBIAOMING,XIANGJU500MilsDECHAFENZOUXIAN,ZAI3MIZHIWAIDEFUSHENENGLIANGSHUAIJIANYIJINGDADAO60dB,ZUYIMANZUFCCDEDIANCIFUSHEBIAOZHUN,SUOYISHEJIZHEGENBENBUYONGGUOFENDANXINCHAFENXIANOUHEBUGOUERZAOCHENGDIANCIBUJIANRONGWENTI。


3.SHEXINGXIAN


SHEXINGXIANSHILayoutZHONGJINGCHANGSHIYONGDEYILEIZOUXIANFANGSHI。QIZHUYAOMUDEJIUSHIWEILEDIAOJIEYANSHI,MANZUXITONGSHIXUSHEJIYAOQIU。SHEJIZHESHOUXIANYAOYOUZHEIYANGDERENSHI:SHEXINGXIANHUIPOHUAIXINHAOZHILIANG,GAIBIANCHUANSHUYANSHI,BUXIANSHIYAOJINLIANGBIMIANSHIYONG。DANSHIJISHEJIZHONG,WEILEBAOZHENGXINHAOYOUZUGOUDEBAOCHISHIJIAN,HUOZHEJIANXIAOTONGZUXINHAOZHIJIANDESHIJIANPIANYI,WANGWANGBUDEBUGUYIJINXINGRAOXIAN。


NEIME,SHEXINGXIANDUIXINHAOCHUANSHUYOUSHENMEYINGXIANGNI?ZOUXIANSHIYAOZHUYIXIESHENMENI?QIZHONGZUIGUANJIANDELIANGGECANSHUJIUSHIPINGXINGOUHEZHANGDU(Lp)HEOUHEJULI(S),HENMINGXIAN,XINHAOZAISHEXINGZOUXIANSHANGCHUANSHUSHI,XIANGHUPINGXINGDEXIANDUANZHIJIANHUIFASHENGOUHE,CHENGCHAMOXINGSHI,SYUEXIAO,LpYUEDA,ZEOUHECHENGDUYEYUEDA。KENENGHUIDAOZHICHUANSHUYANSHIJIANXIAO,YIJIYOUYUCHUANRAOERDADAJIANGDIXINHAODEZHILIANG,QIJILIKEYICANKAODISANZHANGDUIGONGMOHECHAMOCHUANRAODEFENXI。


XIAMIANSHIJIGONGCHENGSHICHULISHEXINGXIANSHIDEJIDIANJIANYI:


1.JINLIANGZENGJIAPINGXINGXIANDUANDEJULI(S),ZHISHAODAYU3H,HZHIXINHAOZOUXIANDAOCANKAOPINGMIANDEJULI。TONGSUDESHUOJIUSHIRAODAWANZOUXIAN,ZHIYAOSZUGOUDA,JIUJIHUNENGWANQUANBIMIANXIANGHUDEOUHEXIAOYING。


2.JIANXIAOOUHEZHANGDULp,DANGLIANGBEIDELpYANSHIJIEJINHUOCHAOGUOXINHAOSHANGSHENGSHIJIANSHI,CHANSHENGDECHUANRAOJIANGDADAOBAOHE。


3.DAIZHUANGXIAN(Strip-Line)HUOZHEMAISHIWEIDAIXIAN(Embedded Micro-strip)DESHEXINGXIANYINQIDEXINHAOCHUANSHUYANSHIXIAOYUWEIDAIZOUXIAN(Micro-strip)。LILUNSHANG,DAIZHUANGXIANBUHUIYINWEICHAMOCHUANRAOYINGXIANGCHUANSHUSULV。


4.GAOSUYIJIDUISHIXUYAOQIUJIAOWEIYANGEDEXINHAOXIAN,JINLIANGBUYAOZOUSHEXINGXIAN,YOUQIBUNENGZAIXIAOFANWEINEIWANYANZOUXIAN。


5.KEYIJINGCHANGCAIYONGRENYIJIAODUDESHEXINGZOUXIAN,RUTU1-8-20ZHONGDECJIEGOU,NENGYOUXIAODEJIANSHAOXIANGHUJIANDEOUHE。


6.GAOSUPCB SHEJIZHONG,SHEXINGXIANMEIYOUSUOWEILVBOHUOKANGGANRAODENENGLI,ZHIKENENGJIANGDIXINHAOZHILIANG,SUOYIZHIZUOSHIXUPIPEIZHIYONGERWUQITAMUDE。


7.YOUSHIKEYIKAOLVLUOXUANZOUXIANDEFANGSHIJINXINGRAOXIAN,FANGZHENBIAOMING,QIXIAOGUOYAOYOUYUZHENGCHANGDESHEXINGZOUXIAN。 


SHENZHENSHICHENGCHIDIANLUKEJIYOUXIANJILIUKUAITINGZHANGQICHENGJIEGEZHONGGAOPINPCBSHEJI、GAOSUBEIBANSHEJI、ZHUJIBANHESHOUJIBANSHEJI、MANGMAIKONGPCBSHEJIYIJIGAOSUCHAFENXINHAODIANLUBANSHEJI。 

 ZAIPCBSHEJIZHONG,TONGCHANGRENWEISHUZILUOJIDIANLUDEPINLVRUGUODADAOHUOCHAOGUO45MHZ~50MHZ,QIEGONGZUOZAIZHEIGEPINLVZHISHANGDEDIANLUYIZHANDAOLEZHENGGEDIANZIXITONGYIDINGFENLIANG(RU1/3),NEIMEJIUCHENGZHIWEIGAOSUDIANLU。 

 GAOSUPCBSHEJISHISUIZHEXITONGSHEJIFUZAXINGHEJICHENGDUDEDAGUIMOTIGAOFAZHANQILAIDE,YINWEI:

1、DANGXITONGGONGZUOZAI50MHzSHI,JIANGCHANSHENGCHUANSHUXIANXIAOYINGHEXINHAOWANZHENGXINGWENTI。 

2、DANGXITONGGONGZUODADAO120MHzSHI,CHUFEISHIYONGGAOSUDIANLUSHEJIZHISHI,FOUZEJIYUCHUANTONGFANGFASHEJIDEPCBJIANGWUFAGONGZUO。 

SUOYI,GAOSUDIANLUSHEJIJISHUYIJINGCHENGWEIDIANZIXITONGSHEJISHIBIXUCAIQUDESHEJISHOUDUAN。ZHIYOUTONGGUOSHIYONGGAOSUDIANLUSHEJISHIDESHEJIJISHU,CAINENGSHIXIANSHEJIGUOCHENGDEKEKONGXING。WOJILIUKUAITINGZAIZHEIFANGMIANYOUBUCUODEJISHUJICHU,NENGGOUHENHAODEMANZUGAOSUPCBSHEJIYAOQIU。