[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/jp\/wiki3\/archives\/9786#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/jp\/wiki3\/archives\/9786","headline":"\u633f\u5165\u640d\u5931 – Wikipedia","name":"\u633f\u5165\u640d\u5931 – Wikipedia","description":"\u633f\u5165\u640d\u5931 (\u82f1: insertion loss) \u306f\u30012\u7aef\u5b50\u5bfe\u56de\u8def\u7db2\u3067\u69cb\u6210\u3055\u308c\u308b\u9ad8\u5468\u6ce2\u56de\u8def\u306b\u304a\u3044\u3066\u30011\u3064\u306e\u7aef\u5b50\u304b\u3089\u3082\u30461\u3064\u306e\u7aef\u5b50\u306b\u4f1d\u64ad\u3059\u308b\u96fb\u529b\u306e\u640d\u5931\u3092dB (\u30c7\u30b7\u30d9\u30eb)\u3067\u8868\u3057\u305f\u3082\u306e\u3002 \u7aef\u5b501\u304b\u3089\u5165\u529b\u3059\u308b\u96fb\u529b\u306e\u5e73\u65b9\u6839\u3092 a1{displaystyle a_{1}} \u3001\u7aef\u5b502\u304b\u3089\u5165\u529b\u3059\u308b\u96fb\u529b\u306e\u5e73\u65b9\u6839\u3092 a2=0{displaystyle a_{2}=0} \u3001 \u7aef\u5b502\u304b\u3089\u51fa\u529b\u3055\u308c\u308b\u96fb\u529b\u306e\u5e73\u65b9\u6839\u3092 b2{displaystyle b_{2}} \u3068\u3059\u308b\u3068\u3001\u7aef\u5b501\u304b\u3089\u7aef\u5b502\u306b\u5bfe\u3059\u308b\u633f\u5165\u640d\u5931 IL{displaystyle IL} \u306f\u3001","datePublished":"2020-08-21","dateModified":"2020-08-21","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/jp\/wiki3\/archives\/author\/lordneo#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/jp\/wiki3\/archives\/author\/lordneo","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/11\/book.png","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/11\/book.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/wikimedia.org\/api\/rest_v1\/media\/math\/render\/svg\/bbf42ecda092975c9c69dae84e16182ba5fe2e07","url":"https:\/\/wikimedia.org\/api\/rest_v1\/media\/math\/render\/svg\/bbf42ecda092975c9c69dae84e16182ba5fe2e07","height":"","width":""},"url":"https:\/\/wiki.edu.vn\/jp\/wiki3\/archives\/9786","about":["Wiki"],"wordCount":1385,"articleBody":"\u633f\u5165\u640d\u5931 (\u82f1: insertion loss) \u306f\u30012\u7aef\u5b50\u5bfe\u56de\u8def\u7db2\u3067\u69cb\u6210\u3055\u308c\u308b\u9ad8\u5468\u6ce2\u56de\u8def\u306b\u304a\u3044\u3066\u30011\u3064\u306e\u7aef\u5b50\u304b\u3089\u3082\u30461\u3064\u306e\u7aef\u5b50\u306b\u4f1d\u64ad\u3059\u308b\u96fb\u529b\u306e\u640d\u5931\u3092dB (\u30c7\u30b7\u30d9\u30eb)\u3067\u8868\u3057\u305f\u3082\u306e\u3002  \u7aef\u5b501\u304b\u3089\u5165\u529b\u3059\u308b\u96fb\u529b\u306e\u5e73\u65b9\u6839\u3092 a1{displaystyle a_{1}}\u3001\u7aef\u5b502\u304b\u3089\u5165\u529b\u3059\u308b\u96fb\u529b\u306e\u5e73\u65b9\u6839\u3092 a2=0{displaystyle a_{2}=0}\u3001\u7aef\u5b502\u304b\u3089\u51fa\u529b\u3055\u308c\u308b\u96fb\u529b\u306e\u5e73\u65b9\u6839\u3092   b2{displaystyle b_{2}} \u3068\u3059\u308b\u3068\u3001\u7aef\u5b501\u304b\u3089\u7aef\u5b502\u306b\u5bfe\u3059\u308b\u633f\u5165\u640d\u5931  IL{displaystyle IL} \u306f\u3001IL=\u221220log10\u2061|b2a1|a2=0{displaystyle IL=-20log _{10}left|{frac {b_{2}}{a_{1}}}right|_{a_{2}=0}}\u3068\u306a\u308b\u3002  \u7aef\u5b501\u304b\u3089\u7aef\u5b502\u306b\u5bfe\u3057\u3066\u96fb\u529b\u304c\u5168\u3066\u4f1d\u64ad\u3059\u308b\u5834\u5408\u3001\u633f\u5165\u640d\u5931\u306fIL=\u221220log10\u2061|b2a1|=\u221220log10\u20611=0{displaystyle IL=-20log _{10}left|{frac {b_{2}}{a_{1}}}right|=-20log _{10}1=0} [dB]\u3068\u306a\u308b\u3002S\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u306e\u95a2\u4fc2[\u7de8\u96c6]S\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u8868\u73fe\u3057\u305f\u5834\u5408\u3001\u633f\u5165\u640d\u5931\u306fIL=\u221220log10\u2061|S21|{displaystyle IL=-20log _{10}left|S_{21}right|} [dB]\u3068\u8868\u3055\u308c\u308b\u3002\u4e00\u65b9\u3001\u53cd\u5c04\u306b\u3088\u308b\u640d\u5931\u3092\u542b\u3081\u305a\u3001\u5165\u51fa\u529b\u7aef\u5b50\u9593\u3067\u767a\u751f\u3059\u308b\u640d\u5931\u3092\u8868\u3059\u5834\u5408\u306b\u306fIL=\u221210log10\u2061|S21|21\u2212|S11|2{displaystyle IL=-10log _{10}{frac {left|S_{21}right|^{2}}{1-left|S_{11}right|^{2}}},} [dB]\u3068\u306a\u308a\u3001\u3053\u308c\u304c\u633f\u5165\u640d\u5931\u3068\u8868\u3055\u308c\u308b\u3053\u3068\u3082\u591a\u3044\u3002\u3057\u304b\u3057\u3001\u5b9a\u7fa9\u4e0a\u306f\u53cd\u5c04\u640d\u5931\u3082\u542b\u3081\u305f\u3082\u306e\u304c\u633f\u5165\u640d\u5931\u3067\u3042\u308b\u3068\u3055\u308c\u3066\u3044\u308b\u3002[1][2]:\u307e\u305f\u3001\u640d\u5931\u306e\u5927\u304d\u3055\u3092\u8868\u3059\u610f\u5473\u3067\u3001\u3053\u308c\u3089\u306e\u7b26\u53f7\u304c\u6b63\u3068\u5b9a\u7fa9\u3055\u308c\u308b\u3053\u3068\u3082\u3042\u308b\u3002\u95a2\u9023\u9805\u76ee[\u7de8\u96c6]\u53c2\u8003\u6587\u732e[\u7de8\u96c6]^ Pozar, David M.; Microwave Engineering, Third Edition^ Collin, Robert E.; Foundations For Microwave Engineering, Second Edition 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