JP4225350B2 - 無線受信機 - Google Patents
無線受信機 Download PDFInfo
- Publication number
- JP4225350B2 JP4225350B2 JP2006550605A JP2006550605A JP4225350B2 JP 4225350 B2 JP4225350 B2 JP 4225350B2 JP 2006550605 A JP2006550605 A JP 2006550605A JP 2006550605 A JP2006550605 A JP 2006550605A JP 4225350 B2 JP4225350 B2 JP 4225350B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- signal
- local oscillation
- circuit
- radio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- H04B1/26—Circuits for superheterodyne receivers
- H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more 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
- H04B1/02—Transmitters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
- H03J1/0091—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with means for scanning over a band of frequencies
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- 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
Description
特許文献1では、伝達すべき情報を送る前に、予め無線送信機側からビット同期信号を含む信号をFSK変調して送信し(Preamble方式)、無線受信機側ではその信号を受信し、受信信号レベルが最大となる周波数に局部発振回路を制御する。この特許文献1に記載されている無線システムは、予め搬送波周波数に対応した周波数に無線受信機の局部発振回路の周波数を合わせて同期させることで通信の確立を保証している。
先ず、無線信号と局部発振信号とを混合して中間周波信号に変換するスーパーへテロダイン方式の無線受信機について考える。スーパーへテロダイン方式の場合、局部発振信号の発振周波数が掃引されると、それにともない中間周波信号の周波数が掃引されることになる。
2−VCXO
3−周波数逓倍器
4−ミクサ回路
5−掃引発生回路
6−BPF
7−周波数弁別器
8−コンパレータ
9−位相比較回路
10−合算回路
11−LPF
12−VCO
13、14−分周回路
15−電圧制御共振回路
16−コード発生器
20−増幅回路
21−弾性表面共振子
22−可変容量ダイオード
23、24−周波数制御端子
25−スイッチ回路
26−位相器
27−直交検波回路
50−PLLシンセサイザー
51−高周波増幅器
52−中間周波増幅器
53−直流増幅器
54−増幅器
56−水晶発振器
57−反転増幅器
100−無線受信機
Claims (4)
- 搬送波を送信信号で変調した無線信号を受信する無線受信回路と、局部発振信号を発振する局部発振回路と、前記無線信号と前記局部発振信号とを基にして前記送信信号を復調する復調回路と、を備えた無線受信機において、
前記無線信号を送信する無線送信機の搬送波周波数の周波数ドリフト幅以上の周波数帯域幅で、又は前記局部発振回路の発振周波数の周波数ドリフト幅以上の周波数帯域幅で、前記局部発振回路の発振周波数を止めることなく繰り返し掃引する発振周波数制御回路を設けたことを特徴とする無線受信機。 - 前記送信信号は、誤り訂正符号を含むディジタルデータ信号である請求項1に記載の無線受信機。
- 前記送信信号は、前記発振周波数制御回路により発振周波数を掃引する繰り返しの周期内に、同一内容のコードが繰り返されるディジタルデータ信号である請求項1または2に記載の無線受信機。
- 前記発振周波数制御回路は、当該発振周波数制御回路により発振周波数を掃引する繰り返しの周期内で前記発振周波数を直線的に変化させる請求項3に記載の無線受信機。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005001587 | 2005-01-06 | ||
JP2005001587 | 2005-01-06 | ||
PCT/JP2005/016280 WO2006073013A1 (ja) | 2005-01-06 | 2005-09-06 | 無線受信機および無線送信機 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2006073013A1 JPWO2006073013A1 (ja) | 2008-06-12 |
JP4225350B2 true JP4225350B2 (ja) | 2009-02-18 |
Family
ID=36647501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006550605A Expired - Fee Related JP4225350B2 (ja) | 2005-01-06 | 2005-09-06 | 無線受信機 |
Country Status (7)
Country | Link |
---|---|
US (2) | US7522893B2 (ja) |
EP (1) | EP1835628B1 (ja) |
JP (1) | JP4225350B2 (ja) |
KR (1) | KR20060134916A (ja) |
CN (1) | CN100590982C (ja) |
AT (1) | ATE551778T1 (ja) |
WO (1) | WO2006073013A1 (ja) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005099093A1 (en) * | 2004-03-30 | 2005-10-20 | Itron, Inc. | Frequency shift compensation, such as for use in a wireless meter reading environment |
EP1835628B1 (en) * | 2005-01-06 | 2012-03-28 | Murata Manufacturing Co., Ltd. | Wireless receiver and wireless transmitter |
GB0525623D0 (en) * | 2005-12-16 | 2006-01-25 | Hill Nicholas P R | RFID reader |
JP5067294B2 (ja) * | 2008-07-17 | 2012-11-07 | パナソニック株式会社 | 電波受信装置 |
US20100054377A1 (en) * | 2008-08-28 | 2010-03-04 | Honeywell International Inc. | Systems and methods for spurious signal reduction in multi-mode digital navigation receivers |
CN102474304B (zh) | 2009-07-16 | 2014-11-12 | 索尼公司 | 利用自适应频率陷波的通信系统 |
US8634793B2 (en) * | 2010-05-10 | 2014-01-21 | Csr Technology Inc. | IP2 calibration measurement and signal generation |
EP2388921B1 (en) * | 2010-05-21 | 2013-07-17 | Nxp B.V. | Integrated circuits with frequency generating circuits |
FR2961054A1 (fr) * | 2010-06-08 | 2011-12-09 | Sigfox Wireless | Procede d'utilisation d'une ressource frequentielle partagee, procede de configuration de terminaux, terminaux et systeme de telecommunications |
US9252998B2 (en) * | 2013-02-25 | 2016-02-02 | Itron, Inc. | Radio to detect and compensate for frequency misalignment |
US9014307B2 (en) | 2013-02-25 | 2015-04-21 | Itron, Inc. | Radio to analog-to-digital sample rate decoupled from digital subsystem |
US8958506B2 (en) | 2013-02-25 | 2015-02-17 | Itron, Inc. | FSK/MSK decoder |
US9077487B2 (en) | 2013-02-25 | 2015-07-07 | Itron, Inc. | Radio to support channel plans of arbitrary width and/or spacing |
US9426680B2 (en) | 2013-02-25 | 2016-08-23 | Itron, Inc. | Real-time radio spectrum assessment engine |
CN103166653A (zh) * | 2013-03-18 | 2013-06-19 | 成都中远信电子科技有限公司 | 新型远距离发射机 |
CN104065390A (zh) * | 2013-03-20 | 2014-09-24 | 成都世旗电子科技有限公司 | 采用场效应功率管的机载天线发射机 |
US9992124B2 (en) | 2015-10-09 | 2018-06-05 | Itron, Inc. | Multi-channel decoder architecture |
FR3089736B1 (fr) * | 2018-12-11 | 2020-11-13 | Continental Automotive France | Procédé de détermination de la distance entre un dispositif d’authentification et un véhicule |
JP7226050B2 (ja) * | 2018-12-27 | 2023-02-21 | 株式会社明電舎 | 設備診断装置 |
US11405042B2 (en) * | 2019-12-31 | 2022-08-02 | Texas Instruments Incorporated | Transceiver carrier frequency tuning |
CN111464196B (zh) * | 2020-05-07 | 2021-07-30 | 成都众志天成科技有限公司 | 一种接收机 |
Family Cites Families (23)
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US3716865A (en) * | 1971-06-10 | 1973-02-13 | Chamberlain Mfg Corp | Radio controlled system for garage door opener |
JPS5347313U (ja) | 1976-09-25 | 1978-04-21 | ||
US4152650A (en) * | 1977-04-22 | 1979-05-01 | The Foxboro Company | Continuously-synchronized tracking receiver for a priori defined swept carriers |
US4149122A (en) * | 1977-06-30 | 1979-04-10 | Cutler-Hammer, Inc. | Wideband tracking generator for harmonic mixing receivers |
JPS61111032A (ja) * | 1984-11-05 | 1986-05-29 | Yuniden Kk | 受信機器における受信周波数帯弁別方法 |
US5014340A (en) * | 1986-10-21 | 1991-05-07 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Emergency locating transmitter |
US5289506A (en) * | 1990-02-05 | 1994-02-22 | Sharp Kabushiki Kaisha | Automatic frequency control circuit |
US5257415A (en) * | 1991-03-20 | 1993-10-26 | Fujitsu Limited | Automatic transmission level control device |
US5146227A (en) * | 1991-05-03 | 1992-09-08 | Whistler Corporation | Sweeping receiver |
US5225794A (en) * | 1991-11-18 | 1993-07-06 | Motorola, Inc. | Method and apparatus for a sweep oscillator |
US5335348A (en) * | 1992-01-10 | 1994-08-02 | Nec Corporation | Radio receiver having frequency sweep control apparatus |
JPH07105740B2 (ja) | 1992-04-14 | 1995-11-13 | ユピテル工業株式会社 | 節電型マイクロ波検出器 |
US5668828A (en) * | 1992-05-08 | 1997-09-16 | Sanconix, Inc. | Enhanced frequency agile radio |
JPH07142961A (ja) | 1993-11-22 | 1995-06-02 | Toyota Motor Corp | 受信装置 |
US5666120A (en) * | 1994-04-22 | 1997-09-09 | Whistler Acquisition Corporation | Detector apparatus |
JPH08139773A (ja) | 1994-11-04 | 1996-05-31 | Matsushita Electric Ind Co Ltd | Fsk受信装置 |
JP3548877B2 (ja) | 1996-06-05 | 2004-07-28 | オムロン株式会社 | 通信装置及び遠隔コントロール装置 |
JPH11118909A (ja) * | 1997-10-20 | 1999-04-30 | Yupiteru Ind Co Ltd | マイクロ波検出器 |
JP3816239B2 (ja) | 1998-06-04 | 2006-08-30 | 株式会社デンソー | キーレスエントリ受信機およびキーレスエントリ制御システム |
US6507308B1 (en) * | 1999-08-12 | 2003-01-14 | Yupiteru Industries Co., Ltd. | Microwave detector |
US7359448B2 (en) * | 2002-08-21 | 2008-04-15 | Lear Corporation | Remote transmitter system and method |
JP3831362B2 (ja) * | 2003-06-10 | 2006-10-11 | 日本電信電話株式会社 | 通信装置および通信方法 |
EP1835628B1 (en) * | 2005-01-06 | 2012-03-28 | Murata Manufacturing Co., Ltd. | Wireless receiver and wireless transmitter |
-
2005
- 2005-09-06 EP EP05778602A patent/EP1835628B1/en not_active Not-in-force
- 2005-09-06 WO PCT/JP2005/016280 patent/WO2006073013A1/ja active Application Filing
- 2005-09-06 AT AT05778602T patent/ATE551778T1/de active
- 2005-09-06 KR KR1020067006064A patent/KR20060134916A/ko not_active Application Discontinuation
- 2005-09-06 CN CN200580000940A patent/CN100590982C/zh not_active Expired - Fee Related
- 2005-09-06 US US10/595,248 patent/US7522893B2/en not_active Expired - Fee Related
- 2005-09-06 JP JP2006550605A patent/JP4225350B2/ja not_active Expired - Fee Related
-
2008
- 2008-09-03 US US12/203,403 patent/US7787835B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7787835B2 (en) | 2010-08-31 |
US20080254755A1 (en) | 2008-10-16 |
KR20060134916A (ko) | 2006-12-28 |
EP1835628A4 (en) | 2010-10-20 |
US7522893B2 (en) | 2009-04-21 |
CN100590982C (zh) | 2010-02-17 |
JPWO2006073013A1 (ja) | 2008-06-12 |
ATE551778T1 (de) | 2012-04-15 |
CN1879307A (zh) | 2006-12-13 |
EP1835628B1 (en) | 2012-03-28 |
EP1835628A1 (en) | 2007-09-19 |
US20090011725A1 (en) | 2009-01-08 |
WO2006073013A1 (ja) | 2006-07-13 |
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