HK75787A - Direct conversion radio receiver for fm signals - Google Patents

Direct conversion radio receiver for fm signals

Info

Publication number
HK75787A
HK75787A HK757/87A HK75787A HK75787A HK 75787 A HK75787 A HK 75787A HK 757/87 A HK757/87 A HK 757/87A HK 75787 A HK75787 A HK 75787A HK 75787 A HK75787 A HK 75787A
Authority
HK
Hong Kong
Prior art keywords
signals
radio receiver
direct conversion
conversion radio
direct
Prior art date
Application number
HK757/87A
Other languages
English (en)
Inventor
Ian Alistair Ward Vance
John Kenneth Goatcher
Original Assignee
Stc Plc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stc Plc filed Critical Stc Plc
Publication of HK75787A publication Critical patent/HK75787A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
    • H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
HK757/87A 1981-09-24 1987-10-15 Direct conversion radio receiver for fm signals HK75787A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08128956A GB2106359B (en) 1981-09-24 1981-09-24 Direct conversion radio receiver for fm signals

Publications (1)

Publication Number Publication Date
HK75787A true HK75787A (en) 1987-10-23

Family

ID=10524723

Family Applications (1)

Application Number Title Priority Date Filing Date
HK757/87A HK75787A (en) 1981-09-24 1987-10-15 Direct conversion radio receiver for fm signals

Country Status (10)

Country Link
US (1) US4521892A (xx)
EP (1) EP0076095B1 (xx)
JP (1) JPS58121857A (xx)
KR (1) KR840001794A (xx)
AU (1) AU555532B2 (xx)
DE (1) DE3272336D1 (xx)
GB (1) GB2106359B (xx)
HK (1) HK75787A (xx)
NZ (1) NZ201904A (xx)
SG (1) SG41987G (xx)

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CH667170A5 (de) * 1984-12-07 1988-09-15 Industrieorientierte Forsch Verfahren zur detektion der information eines empfangssignales, insbesondere mit frequenzumtastung.
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US4811425A (en) * 1987-01-09 1989-03-07 Itt Avionics, A Division Of Itt Corporation Apparatus for reducing the effects of local oscillator leakage in mixers employed in zero IF receivers
US4761798A (en) * 1987-04-02 1988-08-02 Itt Aerospace Optical Baseband phase modulator apparatus employing digital techniques
US4944025A (en) * 1988-08-09 1990-07-24 At&E Corporation Direct conversion FM receiver with offset
CA2014916C (en) * 1989-04-20 1994-11-08 Yoichiro Minami Direct conversion receiver with dithering local carrier frequency for detecting transmitted carrier frequency
GB2233535A (en) * 1989-06-30 1991-01-09 Philips Electronic Associated Radio receiver
US5187809A (en) * 1990-08-24 1993-02-16 Motorola, Inc. Dual mode automatic gain control
EP0473373A3 (en) * 1990-08-24 1993-03-03 Rockwell International Corporation Calibration system for direct conversion receiver
WO1992003892A1 (en) * 1990-08-24 1992-03-05 Motorola, Inc. Dual mode automatic gain control
JP2861631B2 (ja) * 1992-05-06 1999-02-24 日本電気株式会社 Ｆｓｋ受信機
DE19608451A1 (de) * 1996-03-05 1997-09-11 Philips Patentverwaltung Verfahren zum Übertragen von Informationen
US6035005A (en) * 1997-02-10 2000-03-07 Motorola, Inc. Receiver with baseband I and Q demodulator
US6091940A (en) * 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US7515896B1 (en) * 1998-10-21 2009-04-07 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US6049706A (en) * 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6813485B2 (en) 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
US6542722B1 (en) 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
CA2281236C (en) 1999-09-01 2010-02-09 Tajinder Manku Direct conversion rf schemes using a virtually generated local oscillator
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
DE10044456A1 (de) * 2000-09-08 2002-04-04 Infineon Technologies Ag Empfängerschaltung, innsbesondere für den Mobilfunk
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US20040157571A1 (en) * 2003-02-07 2004-08-12 Klaas Wortel Enhanced register based FSK demodulator
US7415260B2 (en) * 2004-03-08 2008-08-19 Standard Microsystems Corporation Current-mode direct conversion receiver
KR20060056095A (ko) * 2004-11-19 2006-05-24 지씨티 세미컨덕터 인코포레이티드 집적화된 무선 수신 장치 및 그 방법
KR100666338B1 (ko) * 2006-01-17 2007-01-09 인티그런트 테크놀로지즈(주) 전파식별용 리더기 및 전파식별 시스템.

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US3439283A (en) * 1966-02-04 1969-04-15 Gen Electric Frequency shift keyed discriminating circuits
US3729587A (en) * 1971-07-12 1973-04-24 Bendix Corp Voltage tunable frequency threshold circuit
NL7313361A (nl) * 1973-09-28 1975-04-02 Philips Nv Ontvanger voor de ontvangst van met behulp van entieverschuivingsmodulatie overgedragen ignalen.
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JPS531776A (en) * 1976-06-25 1978-01-10 Tadao Yamazaki Demodulation system with erroneous operation prevent circuit of fm remote control receiver
US4193034A (en) * 1978-07-06 1980-03-11 International Standard Electric Corporation Radio receiver for FSK signals
GB2032737A (en) * 1978-10-24 1980-05-08 Standard Telephones Cables Ltd Radio receiver for tone modulated signals
US4291274A (en) * 1978-11-22 1981-09-22 Tokyo Shibaura Denki Kabushiki Kaisha Phase detector circuit using logic gates
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US4316150A (en) * 1980-01-09 1982-02-16 Tektronix, Inc. Phase locked loop including phase detector system controlled by enable pulses
US4378509A (en) * 1980-07-10 1983-03-29 Motorola, Inc. Linearized digital phase and frequency detector
JPS5757007A (en) * 1980-09-24 1982-04-06 Nippon Telegr & Teleph Corp <Ntt> Orthogonal delay detecting circuit
GB2094079A (en) * 1981-02-20 1982-09-08 Philips Electronic Associated Fm demodulator

Also Published As

Publication number Publication date
KR840001794A (ko) 1984-05-16
JPS58121857A (ja) 1983-07-20
EP0076095A1 (en) 1983-04-06
DE3272336D1 (en) 1986-09-04
AU555532B2 (en) 1986-10-02
AU8845682A (en) 1983-03-31
EP0076095B1 (en) 1986-07-30
SG41987G (en) 1987-09-18
NZ201904A (en) 1986-02-21
GB2106359A (en) 1983-04-07
US4521892A (en) 1985-06-04
GB2106359B (en) 1985-07-03

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