出chu於yu成cheng本ben考kao慮lv，在zai一yi般ban民min用yong設she備bei中zhong都dou使shi用yong單dan層ceng或huo雙shuang層ceng印yin刷shua線xian路lu板ban。隨sui著zhe數shu字zi脈mai衝chong電dian路lu廣guang泛fan應ying用yong，單dan層ceng板ban和he雙shuang層ceng板ban的de電dian磁ci兼jian容rong問wen題ti越yue來lai越yue突tu出chu。

 

zaochengzhezhongxianxiangdezhuyaoyuanyinjiushiyinshixinhaohuilumianjiguoda，bujinchanshenglejiaoqiangdediancifushe，erqieshidianluduiwaijieganraomingan。yaogaishanxianludediancijianrongxing，zuijiandandefangfashijianxiaoguanjianxinhaodehuilumianji。 關鍵信號：congdiancijianrongdejiaodukaolv
，guanjianxinhaozhuyaozhichanshengjiaoqiangfushedexinhaoheduiwaijiemingandexinhao。nenggouchanshengjiaoqiangfushedexinhaoyibanshizhouqixingxinhao
，rushizhonghuodizhidediweixinhao。duiganraomingandexinhaoshizhinaxiedianpingjiaodidemonixinhao。

減小回路麵積的方法：

一yi種zhong簡jian單dan的de方fang法fa是shi在zai關guan鍵jian信xin號hao線xian邊bian上shang布bu一yi條tiao地di線xian，這zhe條tiao地di線xian應ying盡jin量liang靠kao近jin信xin號hao線xian。這zhe樣yang就jiu形xing成cheng了le較jiao小xiao的de回hui路lu麵mian積ji，減jian小xiao差cha模mo輻fu射she對dui外wai界jie幹gan擾rao的de敏min感gan度du。當dang信xin號hao線xian的de旁pang邊bian加jia一yi條tiao地di線xian後hou
，就jiu形xing成cheng了le一yi個ge麵mian積ji最zui小xiao的de回hui路lu，信xin號hao電dian流liu肯ken定ding會hui取qu道dao這zhe個ge回hui路lu，而er不bu是shi其qi它ta地di線xian路lu徑jing。 如ru果guo是shi雙shuang層ceng線xian路lu板ban，可ke以yi在zai線xian路lu板ban的de另ling一yi麵mian，緊jin靠kao近jin信xin號hao線xian的de下xia麵mian，沿yan著zhe信xin號hao線xian布bu一yi條tiao地di線xian，一yi線xian盡jin量liang寬kuan些xie。這zhe樣yang形xing成cheng的de回hui路lu麵mian積ji等deng於yu線xian路lu板ban的de厚hou度du乘cheng以yi信xin號hao線xian的de長chang度du。

 

 另ling外wai，雙shuang層ceng板ban應ying毫hao無wu例li外wai地di使shi用yong地di線xian網wang格ge
，以yi減jian小xiao地di線xian的de阻zu抗kang。當dang使shi用yong了le地di線xian網wang格ge後hou
，信xin號hao線xian的de鄰lin近jin總zong會hui有you一yi條tiao地di線xian
，形xing成cheng較jiao小xiao的de回hui路lu麵mian積ji。並bing且qie在zai布bu線xian時shi，應ying盡jin量liang使shi關guan鍵jian線xian靠kao近jin地di線xian。隻zhi有you對dui特te別bie關guan鍵jian的de線xian（產生很強輻射或特別敏感）。才需要在緊靠信號線的地方設置地線。