JP4902363B2 - Rfidタグ及びrfidタグにおける送受信方法 - Google Patents
Rfidタグ及びrfidタグにおける送受信方法 Download PDFInfo
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- JP4902363B2 JP4902363B2 JP2007003390A JP2007003390A JP4902363B2 JP 4902363 B2 JP4902363 B2 JP 4902363B2 JP 2007003390 A JP2007003390 A JP 2007003390A JP 2007003390 A JP2007003390 A JP 2007003390A JP 4902363 B2 JP4902363 B2 JP 4902363B2
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- signal
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- radio wave
- receiving
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- 230000005540 biological transmission Effects 0.000 title claims description 53
- 238000000034 method Methods 0.000 title claims description 8
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- 238000010791 quenching Methods 0.000 claims description 40
- 230000000171 quenching effect Effects 0.000 claims description 40
- 230000001172 regenerating effect Effects 0.000 claims description 24
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- 230000005684 electric field Effects 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 230000005669 field effect Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Claims (3)
- 送信手段(1)からの電力供給用電波(f1)を受信して供給電力を発生させる受信手段(2)を設け、この受信手段(2)より得られた電力を駆動源としてリーダ/ライタ(4)との間で信号用電波(f2)を送受信する送受信手段(3)を受信手段(2)に接続するRFIDタグにおいて、
電力供給用電波(f1)は、電力供給用信号(b)の他にクエンチング信号(a)を備え、送受信手段(3)は、前記受信手段(2)で受信したクエンチング信号(a)を受けて断続される発振信号を生成する発振手段(32a)と、この発振手段(32a)からの発振信号を増幅して送信を行う増幅手段(32b)とを備えた超再生回路(32)と、リーダ/ライタ(4)からの信号用電波(f2)に基づいて前記増幅手段(32b)を駆動してリーダ/ライタ(4)への送信を行う制御手段(33)を備えたことを特徴とするRFIDタグ。 - 前記受信手段(2)は受信用アンテナ(21)と調整手段(22)とからなり、調整手段(22)は、受信用アンテナ(21)で受信したクエンチング信号(a)を含む電力供給用電波(f1)を昇圧させる昇圧手段(25)、昇圧した電力供給用電波(f1)を整流するダイオード(D1)、高周波成分を取り除き直流信号(b)とクエンチング信号(a)とを取り出すローパスフィルタ(LPF1)、及び直流信号(b)とクエンチング信号(a)とに分ける分波手段(24)からなることを特徴とする請求項1記載のRFIDタグ。
- 電力供給用電波(f1)を受信して電力信号(b)とクエンチング信号(a)とに分離して、電力信号(b)を受けて起動する送受信手段(3)の発振手段(32a)が、クエンチング信号(a)を受けて断続される発振信号を生成し、リーダ/ライタ(4)からの信号用電波(f2)を受信したときに、前記送受信手段(3)の制御手段(33)が、前記発振手段(32a)からの発振信号を増幅して送信を行う増幅手段(32b)を駆動して、信号用電波(f2)をリーダ/ライタ(4)へ送信することを特徴とするRFIDタグにおける送受信方法。
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JP2007003390A JP4902363B2 (ja) | 2007-01-11 | 2007-01-11 | Rfidタグ及びrfidタグにおける送受信方法 |
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JP2007003390A JP4902363B2 (ja) | 2007-01-11 | 2007-01-11 | Rfidタグ及びrfidタグにおける送受信方法 |
Publications (2)
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JP2008172500A JP2008172500A (ja) | 2008-07-24 |
JP4902363B2 true JP4902363B2 (ja) | 2012-03-21 |
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JP2007003390A Active JP4902363B2 (ja) | 2007-01-11 | 2007-01-11 | Rfidタグ及びrfidタグにおける送受信方法 |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2011211500A (ja) * | 2010-03-30 | 2011-10-20 | Lintec Corp | 発振回路、アクティブタグ及び発振出力制御方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3496383B2 (ja) * | 1996-02-06 | 2004-02-09 | 株式会社デンソー | データ通信装置 |
GB2343571B (en) * | 1998-11-07 | 2001-01-10 | Marconi Electronic Syst Ltd | A receiver circuit |
JP2000183782A (ja) * | 1998-12-18 | 2000-06-30 | Omron Corp | 送受信装置 |
BR0108929A (pt) * | 2000-03-01 | 2003-06-03 | Geir Monsen Vavik | Transponder para amplificação de um sinal recebido dentro de um elemento de recepção uso de pelo menos um transponder, sistema de transponder para redes sem fio e com fio, e, uso do mesmo |
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