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COMMUNICATION CIRCUIT, COMMUNICATION APPARATUS, IMPEDANCE MATCHING CIRCUIT AND IMPEDANCE MATCHING CIRCUIT DESIGNING METHOD

外国特許コード F110005921
整理番号 QP040088-PC
掲載日 2011年11月28日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2006JP304154
国際公開番号 WO 2006/126320
国際出願日 平成18年3月3日(2006.3.3)
国際公開日 平成18年11月30日(2006.11.30)
発明の名称 (英語) COMMUNICATION CIRCUIT, COMMUNICATION APPARATUS, IMPEDANCE MATCHING CIRCUIT AND IMPEDANCE MATCHING CIRCUIT DESIGNING METHOD
発明の概要(英語) A communication circuit (1) is provided with, for instance, an antenna section (3) such as a nonresonant antenna, and a matching section (5) for performing impedance matching by being connected to the antenna section (3). The matching section (5) is provided with a transmission line, and the electrical length and characteristic impedance of the transmission line are decided based on a frequency or frequency band where the antenna section (3) and the transmission line resonate. In the nonresonant antenna, for instance, since there is no need for matching the resonance frequency with a center frequency, the antenna can be reduced in sizes. Furthermore, a wide band can be achieved by changing the characteristic impedance of the transmission line.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • Kyushu University, National University Corporation
  • Fukuoka Industry, Science & Technology Foundation
  • 発明者(英語)
  • YOSHIDA, Keiji
  • KANAYA, Haruichi
国際特許分類(IPC)
指定国 AE,AG,AL,AM,AT,AU,AZ,BA,BB,BG,BR,BW,BY,BZ,CA,CH,CN,CO,CR,CU,CZ,DE,DK,DM,DZ,EC,EE,EG,ES,FI,GB,GD,GE,GH,GM,HR,HU,ID,IL,IN,IS,JP,KE,KG,KM,KN,KP,KR,KZ,LC,LK,LR,LS,LT,LU,LV,LY,MA,MD,MG,MK,MN,MW,MX,MZ,NA,NG,NI,NO,NZ,OM,PG,PH,PL,PT,RO,RU,SC,SD,SE,SG,SK,SL,SM,SY,TJ,TM,TN,TR,TT,TZ,UA,UG,US,UZ,VC,VN,YU,ZA,ZM,ZW,EP(AT,BE,BG,CH,CY,CZ,DE,DK,EE,ES,FI,FR,GB,GR,HU,IE,IS,IT,LT,LU,LV,MC,NL,PL,PT,RO,SE,SI,SK,TR),OA(BF,BJ,CF,CG,CI,CM,GA,GN,GQ,GW,ML,MR,NE,SN,TD,TG),AP(BW,GH,GM,KE,LS,MW,MZ,NA,SD,SL,SZ,TZ,UG,ZM,ZW),EA(AM,AZ,BY,KG,KZ,MD,RU,TJ,TM)
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