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可以满足RF功率测量的对数放大器的设计
来源: 电子发烧友    发布时间: 2019-03-28 10:47   704 次浏览   大小:  16px  14px  12px
可以满足RF功率测量的对数放大器的设计

  DUISHUFANGDAQI(TONGCHANGCHENGWEIDUISHUFANGDAQI,YOUSHICHENGWEIDUISHUJIANCEQI)SHIRFDIANLUHEDIANGUANGJIEKOUZHONGSHIYONGDEMONIYUANJIAN。QICHUANDIHANSHUZAIGAINIANSHANGHENJIANDAN:SHUCHUDIANYAHUODIANLIUYUSHURUDIANYAHUODIANLIUDEDUISHUCHENGZHENGBI(TU1)。TAZAI60DAO80FENBEI(TONGCHANG)DESHURUFANWEINEISHIXIANZHEIZHONGSHURU/SHUCHUGUANXI,DANZAIMOUXIEQINGKUANGXIATAKEYIDADAOHUOKUANDAO120FENBEI;YIXIEDUISHUFANGDAQISHENZHIDADAO160 dBDEDONGTAIFANWEI。SUIRANTABEICHENGWEI“FANGDAQI”,DANTABUSHIXIGUANYIYISHANGDE“FANGDAQI”;TASHIJISHANGSHIYIGEXIANXINGDAODUISHUZHUANHUANQI。

彩客网  TU1:DUISHUFANGDAQIHUOZHUANHUANQICHANSHENGSHUCHUDIANLIUHUODIANYAXINHAO( YZHOU),YUSHURUDIANLIUDEDUISHUHUODIANYAXINHAO(XZHOU)CHENGZHENGBI;QINGZHUYI,DUIYUDENGYUHUODIYULINGDESHURU,TASHIWEIDINGYIDE,JINGUANDUISHUFANGDAQIYOUZHEIZHONGXIANZHIDEFANGFA。

  KAOLVDAOSUOYOUDUIZUJIANDEZHONGSHI,GUYIJIANGFEIXIANXINGZUJIANZHIYUXITONGZHONGKENENGHUISHIDEQIFAN。DIANLUXIANXINGDUHEZAIHENKUANDEFANWEINEICHANSHENGDEDISHIZHEN。DUISHUFANGDAQISHISHEJIDEYIBUFEN,DANTATONGCHANGBUZHIJIEZAIXINHAOLIANZHONG。ZAIRFDIANLUZHONG,TATONGCHANGSHIBIHUANKONGZHIDEYIBUFEN,TATONGGUOZIDONGZENGYIKONGZHI(AGC)DIAOJIEJIESHOUTONGDAOZENGYI,TONGGUOZAIKUANFANWEINEICELIANGSHURUXINHAOQIANGDULAIWEICHITONGDAOZHONGJIEJINHENGDINGDEXINHAODIANPING(RSSI) - JIESHOUXINHAOQIANGDUZHISHIQI),TU2,YIJIKONGZHIFASHEGONGLV。ZAIGUANGXUEDIANLUZHONG,TAYONGYUJIANSHIJIGUANGERJIGUANDEDIANLIU,BINGGENJUWENDUHEQITACAOZUOYINSUDIAOZHENGBIANHUA。

彩客网  TU2:ZHENGRUCIFMJIESHOUJIKUANGTUSUOSHI,DUISHUFANGDAQITONGCHANGYONGYUJIESHOUJIDEAGCFANKUIHUANLU,YIWEICHIXINHAODIANPINGJINGUANSHURUXINHAOQIANGDUFANWEIHENGUANG,DANZAIHENZHAIDEFANWEINEI。

彩客网  JINGUANDUIYUDENGYUHUOXIAOYULINGDECANSHU,DUISHUHANSHUWEIDINGYI,DANSHIJIDIANLUQUESHIJUYOUFEIZHENGXINHAO。YINCI,DUISHUFANGDAQISHEJIRENYUANSHIYONGGEZHONGJISHULAIJIEJUEZHEIYIJUXIAN。DUISHUFANGDAQIJIQIYINGYONGFENWEISANDALEI:

  DCDUISHUFANGDAQI(“DC”YOUDIANYONGCIBUDANG)YONGYUHUANMANBIANHUADEXINHAO,ZUIGAOKEDA1 MHz。TAYONGYUGUANGLUGONGLVKONGZHI,YIJIYILIAO,HUAXUEHESHENGWUYIQI。

彩客网  DANGXUYAOMOUZHONGXINHAOYASUOSHI,JIDAIDUISHUFANGDAQIYONGYUYINPINHESHIPINDIANLU,YIJIJIESHOUQIXINHAOLIANDEIFJIHECHAOSHENGDIANLUDEXINHAOCHULILUJING。DUIYUZHENGSHURUXINHAOHUOFUSHURUXINHAO,TAJUYOUDUICHENGSHUCHU,SHUCHUDUIYUZHENGSHURUWEIZHENG,DUIYUFUSHURUWEIFU。

  JIEDIAODUISHUFANGDAQIJIYASUOHEJIEDIAORFXINHAO,QISHUCHUWEIZHENGLIUXINHAOBAOLUODEDUISHU。GAIDUISHUFANGDAQIYONGYURFSHOUFAQIYINGYONG,QIZHONGJIESHOUDERFXINHAOQIANGDUYONGYUKONGZHIFASHEQISHUCHUGONGLV。SHUCHUJIYUSHURUDEJUEDUIZHI,WULUNSHURUSHIZHENGHAISHIFU,DOUSHIZHENGDE。

  [ZHUYI,DUISHUFANGDAQIYULINGYIGEFEIXIANXINGMONIBUTONGFANGDAQI,XIANFUFANGDAQI。GAIQIJIANYOUSHICHENGWEIXUEBOFANGDAQI,ZAIQIDABUFENFANWEINEIDOUSHIXIANXINGDE。DANSHI,DANGSHURUJIEJINZHENGHUOFUZUIDAZHISHI,FANGDAQIZENGYIKAISHIXIAJIANGHEXIANZHI。YINCI,ZHEIGEFANGDAQI“RUANXIANZHI”BINGQIEXIANGDUIYOUYADIDADAOZUIDASHUCHU,ERBUSHIJINJINSHISHUCHUYINGBAOHE - ZHEIHUIDAOZHIYANZHONGSHIZHENBINGQIEFANGDAQIKENENGXUYAOXIANGDUIZHANGDESHIJIANCAINENGHUIFU。DANGSHURUFANHUIZHENGCHANGFANWEISHI,SHUCHUYEHUIKUAISUFANHUIXIANXINGMOSHI。]DUISHUFANGDAQISHEJI

彩客网  DUISHUFANGDAQIDEHEXINSHIJIYUERJIGUANPNJIEDEDIANLIUTONGGUOHEDIANYAZHIJIANZHONGSUOZHOUZHIDEDUISHUGUANXI(TU3ZUO),BINGYUSHIJIDIANLUZHONGDEYUNSUANFANGDAQIJIEHESHIYONG,(TU3YOU)。CONGZHEIGEJIBENDEWULIYUANLIKAISHI,DUISHUFANGDAQISHIYONGXUDUOTUOPUHEPEIZHI,MEIGETUOPUHEPEIZHIZAIJINGDUHEDAIKUANYAOQIUDEGEZHONGXINGNENGSHUXINGHEYOUXIANJIZHIJIANTIGONGZHEZHONG。SUIRANNEIBUXIJIEKENENGYUDUISHUFANGDAQIYONGHUMEIYOUZHIJIEGUANXI,DANTAMENQUESHIHUIYINGXIANGDUISHUFANGDAQIHEYINGYONGCHENGXUZHIJIANDEPIPEI。TIGONGGAOJINGDUCHUANDIHANSHUDEDUISHUFANGDAQI - MOUXIEYINGYONGSUOXUDETEXING,DANZAIQITAYINGYONGZHONGZEBUXUYAO - TONGCHANGCHENGWEI“XIANXINGdB”DUISHUFANGDAQI。

彩客网  TU3:ERJIGUANZHONGSUOZHOUZHIDEDIANLIUYUDIANYAGUANXISHIJIHUSUOYOUDUISHUFANGDAQISHEJIDEJICHU(ZUOTU);WEILELIYONGZHEIZHONGERJIGUANGUANXI,TABEIFANGZHIZAIJIBENYUNSUANFANGDAQISHEJIDEFANKUIHUANLUZHONG(YOU)。

  DUIYURFYINGYONG,LIANXUYASUODUISHUFANGDAQISHIYONGDUOJIFANGDAHEJIANJINXIANZHIYIFENDUANFANGSHIXINGCHENGDUISHUDEJINSIZHI。TAMENBAOKUOYIGEZHENGLIUQI(TANCEQI),MEIGEDOUYOU5DAO10GEDIZENGYIJI(MEIGE8 dBDAO12 dB),QISHUCHUXIANGJIAYICHANSHENGLVBODIANYA,ZHEISHIYIGEFENBEIJIDEPINGJUNGONGLVCELIANGZHI,CHAOGUO100 dBQITASHEPINYINGYONGCAIYONGZHISHUZENGYISHEJI,ZENGYIFANWEISUOXIAO(YUE60 dB)DANJINGDUGENGGAO;TATONGCHANGBAOKUOYIGETANCEQI,QILVBOSHUCHUSHITANCEQICHENGWEIPINGFANGLVQIJIAN,SHUCHUSHISUOSHIJIAXINHAODEGONGLVDENGXIAO(rms)ZHI。

  GUANGXUEYINGYONGDEDUISHUFANGDAQITONGCHANGSHIZAI“DCJI”ZHONG,YINWEITAMENCELIANGYUGUANGGONGLVXIANGGUANDEXIANGDUIHUANMANBIANHUADEDIANLIU,YIKONGZHIJIGUANGERJIGUANZHONGDEDIANLIUHUOGUANGMOFANGDAQIDEZENGYI。TAMENKENENGXUYAOZAIDAYUEJIPIANDAOJIHAOANDEFANWEINEIWANCHENGZHEIXIANGGONGZUO,ZONGGONGJIUSHINIAN(10 9 :1KUADU)。

  对数放大器规格

  DUISHUFANGDAQIDEWULISHIXIANKEYISHIJICHENGDIANLU(IC),YEKEYISHIYOUDANGEXINPIANHEFENLIYUANJIANZUCHENGDEMOKUAI,ICBANBENGENGXIAO,GENGBIANYI,GONGHAOGENGDI,YIJIQITAYOUDIAN,BINGQIEKEYITIGONGFEICHANGHAODEXINGNENG;TAMENTONGCHANGSHISHOUXUAN。DANGICDEDANYIGONGYIJISHUYIJIDANGEICBUNENGCHONGFENMANZUYINGYONGDESUOYOUBIYAOCANSHU(RUZAOSHENG,DAIKUANHUOWENDUFANWEI)SHI,SHIYONGHUNHEJIEGOU。

  DUISHUFANGDAQIJUYOUYIXIEGUIGELEISIYUCHUANTONGDEFEIDUISHUFANGDAQI,YIJIYIXIEYOUYUSHEBEIDEXINGZHIERDUTEDEGUIGE。CIWAI,BUTONGDEGONGYINGSHANGKENENGDUIZHEIXIECANSHUZHONGDEMOUXIECANSHUJUYOUHEFADEBUTONGDINGYI,YINCIJIANCHASHUJUBIAOZHONGDEXIANGXIXINXIHECESHITIAOJIANZHIGUANZHONGYAO。DINGJIYINSUBAOKUO:

  - JISHINIANDEDONGTAIFANWEI:TONGCHANGYIdBWEIDANWEI,DADUOSHUQINGKUANGXIADEFANWEIWEI60 dBZHI120 dB(HUOGENGGAO)。ZAISUOYOUQINGKUANGXIAKENENGDOUBUXUYAOKUANFANWEI,SHIXIANTAKENENGHUIJIANGDIQITAGUANJIANGUIGEDEZHEZHONG。

彩客网  - DAIKUAN:DUIYUJINTIANDERFYINGYONG,ZHEITONGCHANGSHIYIWEISHUDEGHzFANWEI,DANYIXIEXIANJINDESHEBEIKEYIDADAOJISHIGHz。

彩客网  - ZHUNQUEDU:FUHEWANMEIDEXIANXING/DUISHUCHUANDIHANSHU。TATONGCHANGZAI0.1%HE1%ZHIJIAN,DANYEKEYIGENJUQICELIANGDESHURUFANWEIZHONGDEWEIZHIERBIANHUA。

  - LINGMINDU:DUISHUFANGDAQIKEYICHULIDEZUIDIXINHAOZHI;TONGCHANG,TAZAI1 nAHUO1μVDEFANWEINEI,DANKEYIGENGDI;TATONGCHANGYIdBmWEIDANWEIZHIDING,TONGCHANGWEI50Ω。

彩客网  - PIANYI:DANGSHURUCHUYUZUIXIAOZHISHI,DUISHUFANGDAQIDESHUCHU(BUWEI0,YINWEIlog 0WEIDINGYI)。

  - GUDINGHUOKEDIAOJIECANKAO:MOUXIEDUISHUFANGDAQIJUYOUGUDINGDEBILIYINZI,LIRU0.25 V/SHIBEI(HUO10 mA/SHIBEI);QITAYUNXUYONGHUTIGONGQUEDINGBILIYINZIDECANKAO。BILIYINZIKEYIXIANGDUIYUdBHUOSHIJINZHIDIAOCHU,LIRU20 mV/dBHUO400 mV/decade。

彩客网  - DANJIXINGYUSHUANGJIXINGSHURUHESHUCHU:FUSHUDEDUISHUWEIDINGYI,DANXUDUOXIANSHISHIJIEDEXINHAODOUSHIDAIYOUFUZHIDESHUANGJIXINGXINHAO;WEILEKEFUZHEIYIXIANZHI,JIDAIHEJIEDIAODUISHUFANGDAQISHIYONGPIANYI,PINGFANGHUOQITAJISHULAIYUNXUDIYU0 VDESHURU。

彩客网  DUISHUFANGDAQIZUIJUTIAOZHANXINGDELIANGGEWENTISHIZAOSHENGHEWENDUXISHU(WENDUXISHU)。YOUYUDUISHUFANGDAQIGONGZUOSHUSHINIAN,YINCIKEYICHULIμV,nVSHENZHIpVFANWEI(HUOμA,nAHUOpA)DEXINHAO。DANSHI,RUGUOXINHAODIANPINGHENDI,ZEDUISHUFANGDAQIDENEIBUZAOSHENGKENENGHUICHAOGUOXINHAO。DUIYUXUDUORFYINGYONG,XINGYUNDESHI,ZHIYAOZAOSHENGPINPUMIDUZUGOUDI(TONGCHANGZAInV/√HzDESHULIANGJI),DIZAOSHENGJIUBUXIANGFANWEIHEDAIKUANNEIMEZHONGYAO。

  TempcoSHIZUIDUODEDUISHUFANGDAQISHEJIRENYUANHEYONGHUDETIAOZHANXINGCANSHU。YOUYUDUISHUFANGDAQIDEHEXINJIYUBANDAOTIJIEDEXINGWEI,TAJIANGBUKEBIMIANDISUIWENDUBIANHUA。DUISHUFANGDAQISHEJIRENYUANSHIYONGGEZHONGSHEJIJISHULAIQUXIAO,BUCHANG,XIUZHENGHUOZUIXIAOHUAWENDUXISHU,DANTARENGRANSHIYINGXIANGZHENGTIXINGNENGDEYIGEYINSU。YUXUDUOMONIZUJIANYIYANG,DUISHUFANGDAQIKETIGONGXIANGXIGUIGE,SHIYONGYUBIAOZHUNSHANGYONG,KUOZHANGONGYESHENZHIJUNYONGWENDUFANWEI。

  对数放大器示例显示规格范围

  XUDUOMONIHEHUNHEXINHAOICGONGYINGSHANGDOUTIGONGDUISHUFANGDAQI。ZHIZAOSHANGTONGCHANGTIGONGWUCHAYIZHIXINGGAISHUQUXIAN,YIJIXIANGXIQUXIAN,XIANSHIZAIMEIGEPINLVXIATEDINGPINLVYIJIDIWEN,BIAOCHENGWENDUHEGAOWENXIADEYIZHIXING。

彩客网  LIRU,ADIGONGSIDEAD8318SHIYIKUANJIEDIAODUISHUFANGDAQI,TAZAIJILIANFANGDAQILIANSHANGSHIYONGZHUXINGYASUOJISHU,MEIJIDOUPEIYOUYIGETANCEQIDANYUAN(TU4)。TAWEI1 MHzZHI6 GHzDEXINHAOTIGONGZHUNQUEDEDUISHUYIZHIXING,BINGTIGONG8 GHzDEYOUYONGCAOZUO。SHURUFANWEITONGCHANGWEI60 dB(SHURUZUKANGWEI50Ω),WUCHAXIAOYU±1 dB(TU5),ERWENDUWENDINGXINGWEI±0.5 dB。 4 mm×4 mm,16YINJIAOQIJIANDEEDINGWENDUFANWEIWEI-40°CZHI+ 85°C,CAIYONG5 VDANDIANYUANGONGDIAN。

  TU4:ADIGONGSIDEAD8318DUISHUFANGDAQICAIYONGJILIANFANGDAQILIANHEZHUXINGYASUOJISHU,KEWEI1 MHzZHI6 GHzDEXINHAOTIGONGJINGQUEDEDUISHUYIZHIXING,BINGKEZAI8 GHzDEPINLVXIAYUNXING。

彩客网  TU5:GONGYINGSHANGWEIDUISHUFANGDAQITIGONGDEXUDUOXIANGXIXINGNENGTUZHIYI,AD8318SHUCHUDIANYAVOUT(JIHUSHIZHIXIANXIAJIANGXIAN)HEDUISHUYIZHIXING(“YAOBAI”XIAN)DUIBITU.8 GHzDESHURUFUDUYEBIAOXIANCHU+ 25°C(HEISE),-40°C(LANSE)HE+ 85°C(HONGSE)DEXINGNENG。

  LINGLIERTEGONGSITIGONGLT5537,KUANDONGTAIFANWEIRF/IFTANCEQI,GONGZUOPINLVFANWEIWEI10 MHzZHI1 GHz(TU6)。ZAI200 MHzSHI,QIDONGTAIFANWEIWEI90 dB,JUYOU±3 dBFEIXIANXING(50ΩSHURU),RUTU7SUOSHI。JIANBOQISHUCHUDIANYAXIELVWEI20 mV/dB(BIAOCHENGZHI),WENDUXISHUWEI0.01 dB/° CWEI200 MHz(DIANXINGZHI)。LINGMINDUYEZAI200 MHzXIACELIANG,ZHISHAOWEI-76 dBm。TACAIYONG2.7 VZHI5.25 VDANDIANYUANGONGDIAN,CAIYONG8YINJIAO,3 mm×2 mmFENGZHUANG。

  TU6:LT5537ZAISHURUHESHUCHUZHIJIANTIGONGDUISHUXIANXINGGUANXI;SHURUXINHAOYOUYIXILIEXIANFUFANGDAQIJIFANGDA;YIXILIETANCEQIDANYUANDUIXINHAOJINXINGZHENGLIUBINGCHANSHENGYIGEYUSHURUGONGLVXIANXINGXIANGGUANDESHUCHUDIANLIU。

  TU7:ZHEISHIYIGEGUANGFANDEGAISHUSHUCHUDIANYAHEXIANXINGWUCHAYUSHURUGONGLVDEGUANXI,ZAI200 MHzHESANGEWENDUXIA,LINGLIERTEGONGSIDELT5537FUYIDALIANGGENGXIANGXIDEXINGNENGTU。

  DISANGELIZISHIMAX4003LAIZIMaxim Integrated。TAMENDEMAX4003DIGONGHAODUISHUFANGDAQISHEJIYONGYUJIANCEGONGZUOPINLVFANWEIWEI100 MHzZHI2500 MHzDERFGONGLVFANGDAQI(PA)DEGONGLVDIANPING(TU8)。GAIDUISHUFANGDAQIJUYOU45 dBDEDIANXINGDONGTAIFANWEI,KEYUWUXIANYINGYONGXIANGPIPEI,BAOKUOFENGWOSHOUJIPAKONGZHI,WUXIANZHONGDUANSHEBEIDEFASHEQIXINHAOQIANGDUKONGZHIYIJIQITAFASHEJIGONGLVCELIANG。

  TU8:MaximDEMAX4003DUISHUFANGDAQISHI100 MHzZHI2500 MHzDEDIGONGHAOYUANJIAN,FANWEIWEI45 dB;BAOKUOSIGE10 dBFANGDAQI/XIANFUQIJI,MEIGEJIDOUJUYOU10 dBDEXIAOXINHAOZENGYI;MEIGEFANGDAQI/XIANFUQIJIDESHUCHUYINGYONGYUQUANBOZHENGLIUQIHEJIANCEQIJIYEWEIYUDIYIJIZHIQIAN,GONGYOUWUGEJIANCEQI。

彩客网  GAIDIANYACELIANGZHUANGZHISHIYONGYU - DEDIANXINGXINHAOFANWEI - 58 dBVZHI-13 dBV,CAIYONGGEZHONGXIAOXINGFENGZHUANG,BAOKUO8HANQIUXINPIANJI,μMAXHEBOXINGQFNFENGZHUANG。GONGYINGSHANGTIGONGLEZHENDUIBUTONGPINLVDEGAOJIGAISHUYIZHIXINGTU(TU9),YIJISUOYINYONGDEMEIGEPINLVDEGENGXIANGXIDEYIZHIXINGTU,BAOKUOWENDUSHENZHIFENGZHUANGLEIXING。GAIQIJIANXUYAO5.9 mA(3.0 VDIANYUAN),DANGQIJIANCHUYUGUANDUANZHUANGTAISHIJINXU13μA。TAKEZAI-40°CZHI+ 85°CDEZHENGGEGONGZUOWENDUFANWEINEISHIXIANWENDUWENDINGXING。

彩客网  TU9:FENGZHUANGYEHUIYINGXIANGXINGNENG,RUMaxim MAX4003SHUJUSHOUCESUOSHI,VOUTHEDUISHUYIZHIXINGYU2.5 GHzSHIDESHURUGONGLVXIANGBI,CAIYONG8YINJIAOμMAXFENGZHUANG(ZUO)JIQI8HANQIUXINPIANJIUCSP?FENGZHUANG(YOU)。

  总结

彩客网  SUIRANTAMENJUYOUBICHUANTONGXIANXINGFANGDAQIGENGFUZAHEXIWEIDEGUIGE,DANDUISHUFANGDAQIZAISHEPINHEGUANGXUEXITONGZHONGDOUFAHUIZHEGUANJIANZUOYONG。JUYOUGHzFANWEIXIANGYINGDEDUISHUFANGDAQIYONGYUGUANLIJIESHOUQIDEQIANDUANZENGYIYIJICHUANSHUGONGLV,ERDIPINDUISHUFANGDAQIYONGYUCELIANGTONGGUOGUANGXIANLIANLUZHONGDEJIGUANGERJIGUANDEDIANLIU。

  GOUJIANDUISHUFANGDAQIDEFANGFAYOUHENDUOZHONG,QIZHONGDADUOSHUSHIJIYUERJIGUANDUTEDEDUISHUDIANYA/DIANLIUCHUANDIHANSHUDEHEXIN。RANER,SHIYONGDEWANZHENGDUISHUFANGDAQIYUANBIDANDUDEERJIGUANFUZA,BINGQIEBIXUSHIYINGHEQUANHENGDONGTAIFANWEI,DAIKUAN,WENDUPIAOYI,ZAOSHENGHEQITAXINGNENGCANSHUDEGUIGE。JINTIANDEICXINGDUISHUFANGDAQIZAIXIAOXING,DIGONGHAOHEDICHENGBENFENGZHUANGZHONGTIGONGLECHUSEDEXINGNENG。ZHIYOUZAIXIANGDANGZHUANYEDEQINGKUANGXIA,CAINENGYUELAIYUEDUODIXUYAOHUNHEDEDUOXINPIANDUISHUFANGDAQISHIXIAN。

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