JP2006197635A - Rfレシーバ - Google Patents
Rfレシーバ Download PDFInfo
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- JP2006197635A JP2006197635A JP2006045800A JP2006045800A JP2006197635A JP 2006197635 A JP2006197635 A JP 2006197635A JP 2006045800 A JP2006045800 A JP 2006045800A JP 2006045800 A JP2006045800 A JP 2006045800A JP 2006197635 A JP2006197635 A JP 2006197635A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D11/00—Super-regenerative demodulator circuits
- H03D11/02—Super-regenerative demodulator circuits for amplitude-modulated oscillations
- H03D11/04—Super-regenerative demodulator circuits for amplitude-modulated oscillations by means of semiconductor devices having more than two electrodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/30—Circuits for homodyne or synchrodyne receivers
Abstract
【解決手段】RF信号を受信するための受信アンテナと、マイクロパワーRF増幅器とを有するRFレシーバは、受信アンテナに接続され、1又は2以上の所望の同調周波数を決定するための周波数選択ネットワークと、周波数選択ネットワークに接続されるとともに、平均インピーダンスを有しており、RF信号を周期的にサンプリングして、RF信号のサンプル化されたレプリカを得るためのサンプリング混合器とを備える。
【選択図】 図1
Description
US 特許No 特許権者 発行日
US 3,883,809 バー プランク その他(Ver Planch et al.) 1975. 5.13
US 4,143,324 デービス(Davis) 1979. 3. 6
US 4,307,465 ゲラー(Geller) 1981.12.22
US 4,393,514 ミナクチ(Minakuchi) 1983. 7.12
US 4,455,682 マスターズ(Masters) 1984. 6.19
US 4,749,964 アシュ(Ash) 1988. 6. 7
US 4,786,903 グリンダール その他(Grindahl et al.) 1988.11.22
US 5,029,271 マイアーディルク(Meierdierck) 1991. 7. 2
F(Sig)=F(RF)−nF(LO)
ここで、F(Sig)は、検出されたRF信号の周波数であり、F(RF)は、周波数選択ネットワークのRFフィルタリング周波数であり、nは整数であり、F(LO)は、局所オシレータにより設定されるサンプリング周波数であり、典型的には、300KHzのオーダである。
F(Sig)=F(RF)−nF(LO)
ここで、F(Sig)は、検出されたRF信号の周波数であり、F(RF)は、FSN204のRFフィルタング周波数であり、nは整数であり、F(LO)は、局所オシレータ周波数(典型的に300KHz)により設定されたサンプリング周波数である。オーディオ/データ帯域幅は、0と10KHzの間の範囲にある一方、RF周波数は、0と500MHzの間の範囲にある。
Claims (8)
- RF信号を受信するための受信アンテナと、マイクロパワーRF増幅器とを有するRFレシーバであって、
a)前記受信アンテナに接続され、1又は2以上の所望の同調周波数を決定するための周波数選択ネットワークと、
b)前記周波数選択ネットワークに接続されるとともに、平均インピーダンスを有しており、前記RF信号を周期的にサンプリングして、前記RF信号のサンプル化されたレプリカを得るためのサンプリング混合器と
を更に備え、
c)前記周波数選択ネットワークは、インピーダンス適合ネットワークとして作用し、整合された成端を前記アンテナに与えるとともに、高インピーダンス出力を与えて、前記サンプリング混合器の前記平均インピーダンスを整合するようにし、
d)前記周波数選択ネットワークは、比較的長い負荷のかかっていない出力期間と長い非導通サンプリング間隔とを有し、これにより、前記周波数選択ネットワークは、前記非導通サンプリング間隔中、及び、サンプリングの時に、エネルギーを蓄積するとともに格納し、格納されたエネルギーが実質的に抽出されており、
e)前記マイクロパワー増幅器は、前記サンプリング混合器に接続され、前記サンプルされたレプリカ信号を増幅する
ことを特徴とするRFレシーバ。 - 前記サンプリング混合器は、下式で示されるように、多数のサンプリング周波数で変調されたRF信号をサンプルする:
F(Sig)=F(RF)−nF(LO)、
ここで、F(Sig)は、変調されたRF信号の周波数であり、F(RF)は、前記周波数選択ネットワークのRFフィルタリング周波数であり、nは整数であり、F(LO)は、局所オシレータにより設定されるサンプリング周波数である、請求項1に記載のRFレシーバ。 - 前記サンプリング混合器は、共通のカソード形態で2つのショットキーダイオードを有しており、局所オシレータのゲートパルスが、前記ショットキーダイオードの共通のカソードに供給される、請求項2に記載のRFレシーバ。
- 矩形波の発振信号を生成するための局所オシレータを更に含む、請求項3に記載のRFレシーバ。
- 前記局所オシレータに接続され、前記矩形波の発振信号の上昇時間を減少するためのパルス発生器を更に含む、請求項4に記載のRFレシーバ。
- 前記パルス発生器と前記両ショットキーダイオードの共通カソードとの間に接続されて、前記パルス発生器の出力での前記発振矩形波信号を、速い上昇時間及び指数的に減衰する尾部を有する高ピークの電流信号に変換するためのパルス形成ネットワークを更に含む、請求項5に記載のRFレシーバ。
- 請求項1乃至6の何れか1つに記載のレシーバを含むトランスポンダー。
- a)所定の抑制周波数で一連の抑制発振パルスを発生するための外部抑制オシレータと、
b)前記抑制オシレータに接続され、前記一連の抑制発振パルスを一連の指数的に減衰する駆動パルスに変換するためのパルス形成ネットワークと、
c)前記駆動パルスに接続されるとともに、前記駆動パルスにより駆動されるオシレータと、
d)前記オシレータに接続され、変調された信号を受信するためのアンテナと、
e)RFオシレータに接続され、前記抑制周波数信号を阻止するとともに、検出された信号を通過させるための信号抽出ネットワークと、
f)前記信号抽出ネットワークに接続され、前記検出された信号を増幅するマイクロパワー増幅器と
を含むレシーバ。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/300,765 US5630216A (en) | 1994-09-06 | 1994-09-06 | Micropower RF transponder with superregenerative receiver and RF receiver with sampling mixer |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50957296A Division JP3841826B2 (ja) | 1994-09-06 | 1995-08-29 | マイクロパワーrfトランスポンダー |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006197635A true JP2006197635A (ja) | 2006-07-27 |
JP3916649B2 JP3916649B2 (ja) | 2007-05-16 |
Family
ID=23160490
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50957296A Expired - Lifetime JP3841826B2 (ja) | 1994-09-06 | 1995-08-29 | マイクロパワーrfトランスポンダー |
JP2006045800A Expired - Lifetime JP3916649B2 (ja) | 1994-09-06 | 2006-02-22 | Rfレシーバ |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50957296A Expired - Lifetime JP3841826B2 (ja) | 1994-09-06 | 1995-08-29 | マイクロパワーrfトランスポンダー |
Country Status (8)
Country | Link |
---|---|
US (1) | US5630216A (ja) |
EP (2) | EP0781473B1 (ja) |
JP (2) | JP3841826B2 (ja) |
AT (2) | ATE477618T1 (ja) |
AU (1) | AU3462295A (ja) |
CA (1) | CA2199123C (ja) |
DE (2) | DE69536094D1 (ja) |
WO (1) | WO1996008086A1 (ja) |
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-
1994
- 1994-09-06 US US08/300,765 patent/US5630216A/en not_active Expired - Lifetime
-
1995
- 1995-08-29 DE DE69536094T patent/DE69536094D1/de not_active Expired - Lifetime
- 1995-08-29 DE DE69533924T patent/DE69533924T2/de not_active Expired - Lifetime
- 1995-08-29 JP JP50957296A patent/JP3841826B2/ja not_active Expired - Lifetime
- 1995-08-29 EP EP95931035A patent/EP0781473B1/en not_active Expired - Lifetime
- 1995-08-29 AT AT03029978T patent/ATE477618T1/de not_active IP Right Cessation
- 1995-08-29 AU AU34622/95A patent/AU3462295A/en not_active Abandoned
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DE69533924T2 (de) | 2005-12-15 |
DE69536094D1 (de) | 2010-09-23 |
JPH10505211A (ja) | 1998-05-19 |
AU3462295A (en) | 1996-03-27 |
EP1411644A2 (en) | 2004-04-21 |
EP0781473A1 (en) | 1997-07-02 |
JP3916649B2 (ja) | 2007-05-16 |
US5630216A (en) | 1997-05-13 |
CA2199123A1 (en) | 1996-03-14 |
JP3841826B2 (ja) | 2006-11-08 |
CA2199123C (en) | 2007-07-24 |
WO1996008086A1 (en) | 1996-03-14 |
ATE477618T1 (de) | 2010-08-15 |
ATE287147T1 (de) | 2005-01-15 |
DE69533924D1 (de) | 2005-02-17 |
EP1411644B1 (en) | 2010-08-11 |
EP0781473B1 (en) | 2005-01-12 |
EP0781473A4 (en) | 1999-12-08 |
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