TOP > 外国特許検索 > MICROWAVE BAND BOOSTER RECTIFIER CIRCUIT, AND WIRELESS TAG DEVICE AND WIRELESS TAG SYSTEM EMPLOYING SAME

MICROWAVE BAND BOOSTER RECTIFIER CIRCUIT, AND WIRELESS TAG DEVICE AND WIRELESS TAG SYSTEM EMPLOYING SAME

外国特許コード F120006816
整理番号 S2011-0024
掲載日 2012年7月19日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2011JP079728
国際公開番号 WO 2012/090840
国際出願日 平成23年12月21日(2011.12.21)
国際公開日 平成24年7月5日(2012.7.5)
優先権データ
  • 特願2010-293145 (2010.12.28) JP
発明の名称 (英語) MICROWAVE BAND BOOSTER RECTIFIER CIRCUIT, AND WIRELESS TAG DEVICE AND WIRELESS TAG SYSTEM EMPLOYING SAME
発明の概要(英語)

In order to implement new usage methods from a standpoint of efficient usage of radio wave resources, such as data communication or positioning with radio-wave format wireless tags which are usable at ISM 5Ghz or 24Ghz microwave frequency bands, the present invention implements a high-sensitivity, low-power consumption RF receiving protocol. A microwave frequency band stub resonance booster circuit is employed, which uses a passive operation to boost RF signal amplitude by carrying out an impedance conversion on an inputted RF signal with a 0.01pF - 0.2pF micro-capacitor element and a ?g/2 open stub element which are made to resonate in series. Furthermore, treating the DC resistance component of resonance boost output as an open state when voltage doubling and rectifying the resonance boosted RF signal eliminates the conventional need for a capacitor which would be inserted in order to repeat charging and discharging of the RF signal using two diodes, allowing obtaining rectified output and high-sensitivity reception and detection of the RF signal in the microwave bands without incurring capacitor effects which cause comparatively large insertion loss.

  • 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
  • TOHOKU UNIVERSITY,
  • KITAYOSHI, HITOSHI,
  • SAWAYA, KUNIO
  • 発明者(英語)
  • KITAYOSHI, HITOSHI,
  • SAWAYA, KUNIO
国際特許分類(IPC)
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