ES2108090T3 - Receptor de radio. - Google Patents

Receptor de radio.

Info

Publication number
ES2108090T3
ES2108090T3 ES92306399T ES92306399T ES2108090T3 ES 2108090 T3 ES2108090 T3 ES 2108090T3 ES 92306399 T ES92306399 T ES 92306399T ES 92306399 T ES92306399 T ES 92306399T ES 2108090 T3 ES2108090 T3 ES 2108090T3
Authority
ES
Spain
Prior art keywords
frequency
local oscillator
satellite navigation
oscillator signal
radio receiver
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 - Lifetime
Application number
ES92306399T
Other languages
English (en)
Inventor
Raymond Jensen Hasler
Oliver Paul Leisten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Microsemi Frequency and Time Corp
Original Assignee
Symmetricom Inc
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 Symmetricom Inc filed Critical Symmetricom Inc
Application granted granted Critical
Publication of ES2108090T3 publication Critical patent/ES2108090T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/35—Constructional details or hardware or software details of the signal processing chain
    • G01S19/36—Constructional details or hardware or software details of the signal processing chain relating to the receiver frond end
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/32—Multimode operation in a single same satellite system, e.g. GPS L1/L2
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/33—Multimode operation in different systems which transmit time stamped messages, e.g. GPS/GLONASS
    • 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
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B21/00—Generation of oscillations by combining unmodulated signals of different frequencies
    • H03B21/01—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies
    • H03B21/02—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies by plural beating, i.e. for frequency synthesis ; Beating in combination with multiplication or division of frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Burglar Alarm Systems (AREA)
  • Superheterodyne Receivers (AREA)
  • Structure Of Receivers (AREA)

Abstract

UN RECEPTOR DE NAVEGACION POR OBSERVACIONES DE SATELITES UTILIZA CIRCUITERIA DE CONVERSION SUPERHETERODINA DUAL Y SINTETIZADOR DE FRECUENCIA PARA RECIBIR LAS SEÑALES DE LOS DOS SISTEMAS DE NAVEGACION POR OBSERVACIONES DE SATELITES GPS Y GLONASS. SE ALIMENTAN UN PRIMERO Y UN SEGUNDO CONVERTIDORESREDUCTORES DE FRECUENCIA SUCESIVOS (14, 18) EN LA CADENA DEL RECEPTOR MEDIANTE UNA PRIMERA Y UNA SEGUNDA SEÑALES DEL OSCILADOR LOCAL (24, 26) QUE SON VARIABLES AMBAS EN FRECUENCIA DE TAL FORMA QUE LA FRECUENCIA DE LA PRIMERA SEÑAL DEL OSCILADOR LOCAL (24) ES UN MULTIPLO ENTERO (PREFERIBLEMENTE EL 8) DE LA SEGUNDA SEÑAL DEL OSCILADOR LOCAL (26). LA RELACION LA PROPORCIONA UN DIVISOR BINARIO (32), AL MENOS, UNA PARTE DE LA CUAL FORMA PARTE DE UN BUCLE DEL SINTETIZADOR DE FRECUENCIA DIGITAL (30)
ES92306399T 1991-07-16 1992-07-13 Receptor de radio. Expired - Lifetime ES2108090T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB919115350A GB9115350D0 (en) 1991-07-16 1991-07-16 A radio receiver

Publications (1)

Publication Number Publication Date
ES2108090T3 true ES2108090T3 (es) 1997-12-16

Family

ID=10698446

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92306399T Expired - Lifetime ES2108090T3 (es) 1991-07-16 1992-07-13 Receptor de radio.

Country Status (8)

Country Link
US (2) US5606736A (es)
EP (1) EP0523938B1 (es)
AT (1) ATE159392T1 (es)
DE (1) DE69222704T2 (es)
DK (1) DK0523938T3 (es)
ES (1) ES2108090T3 (es)
GB (3) GB9115350D0 (es)
GR (1) GR3025248T3 (es)

Families Citing this family (76)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6002926A (en) * 1989-09-27 1999-12-14 Nec Corporation Double superheterodyne type receiving circuit
GB9115350D0 (en) * 1991-07-16 1991-08-28 Navstar Ltd A radio receiver
FI935271A (fi) * 1993-11-26 1995-05-27 Nokia Mobile Phones Ltd Menetelmä ja piirijärjestely välitaajuussignaalien muodostamiseksi digitaalisen matkapuhelimen radiotajuusosassa
US5812591A (en) * 1994-09-23 1998-09-22 Garmin Corporation Dual conversion GPS frequency converter and frequency plan for same
DE19521908B4 (de) * 1995-06-16 2005-11-10 Atmel Germany Gmbh Überlagerungsempfänger mit Synchrondemodulation für den Zeitzeichenempfang
US5874914A (en) * 1995-10-09 1999-02-23 Snaptrack, Inc. GPS receiver utilizing a communication link
ES2206601T5 (es) * 1995-10-09 2011-06-06 Snaptrack, Inc. Sistema combinado de posicionamiento gps y de comunicaciones utilizando circuitos compartidos.
FR2739938B1 (fr) * 1995-10-17 1997-11-07 Sextant Avionique Recepteur de determination d'une position a partir de reseaux de satellites
FR2742946B1 (fr) * 1995-12-22 1998-01-16 Alcatel Mobile Comm France Terminal de radiocommunication multimode
US5937338A (en) * 1996-03-05 1999-08-10 General Research Of Electronics, Inc. Scanning radio receiver
US5937341A (en) * 1996-09-13 1999-08-10 University Of Washington Simplified high frequency tuner and tuning method
EP0841577B1 (en) * 1996-11-06 2002-07-10 Interuniversitair Micro-Elektronica Centrum Vzw Method and apparatus for receiving and converting spread spectrum signals
EP0856745A1 (en) * 1997-01-31 1998-08-05 Interuniversitair Micro-Elektronica Centrum Vzw Method and apparatus for receiving and converting spread spectrum signals
JP3874912B2 (ja) * 1996-11-06 2007-01-31 アンテルユニヴェルシテール・ミクロ−エレクトロニカ・サントリュム・ヴェー・ゼッド・ドゥブルヴェ スペクトル拡散信号の受信変換方法とその装置
US5825213A (en) * 1996-12-16 1998-10-20 Motorola, Inc. Method and apparatus for frequency synthesis
US6002924A (en) * 1996-12-31 1999-12-14 Aor, Ltd. Full-spectrum all-mode radio receiver apparatus and method
FR2759220B1 (fr) * 1997-01-31 1999-04-23 Sextant Avionique Circuit de traitement analogique de signal pour recepteur de positionnement par satellite
US6115363A (en) * 1997-02-19 2000-09-05 Nortel Networks Corporation Transceiver bandwidth extension using double mixing
DE69834875T2 (de) * 1997-03-12 2007-01-11 Koninklijke Philips Electronics N.V. Frequenzumsetzungsschaltung
US5923287A (en) * 1997-04-01 1999-07-13 Trimble Navigation Limited Combined GPS/GLONASS satellite positioning system receiver
US5914685A (en) 1997-04-25 1999-06-22 Magellan Corporation Relative position measuring techniques using both GPS and GLONASS carrier phase measurements
JP3825540B2 (ja) * 1997-09-05 2006-09-27 松下電器産業株式会社 受信機および送受信機
ATE323890T1 (de) 1997-11-19 2006-05-15 Imec Vzw Verfahren und vorrichtung zum empfang von gps/glonass-signalen
US6144845A (en) * 1997-12-31 2000-11-07 Motorola, Inc. Method and circuit for image rejection
KR100303397B1 (ko) * 1998-06-23 2001-11-22 윤종용 모든합성주파수구간들에서변하지않는루프특성을가지는주파수합성기
US6600909B1 (en) * 1998-09-15 2003-07-29 Samsung Electronics Co., Ltd. Device for receiving signals from satellite radio-navigation systems
US6181212B1 (en) * 1999-01-28 2001-01-30 Lucent Technologies, Inc. Phase locked loop for generating two disparate, variable frequency signals
US6360087B1 (en) * 1999-03-02 2002-03-19 Conexant Systems, Inc Direct conversion receiver
US6466862B1 (en) * 1999-04-19 2002-10-15 Bruce DeKock System for providing traffic information
JP4272360B2 (ja) * 1999-05-25 2009-06-03 サムスン エレクトロニクス カンパニー リミテッド 緊急時用通信チャネルを持つｇｐｓ受信器
US6708026B1 (en) 2000-01-11 2004-03-16 Ericsson Inc. Division based local oscillator for frequency synthesis
US6331836B1 (en) 2000-08-24 2001-12-18 Fast Location.Net, Llc Method and apparatus for rapidly estimating the doppler-error and other receiver frequency errors of global positioning system satellite signals weakened by obstructions in the signal path
US6944121B1 (en) * 2001-03-19 2005-09-13 Cisco Systems Wireless Networking (Australia) Pty Limited Wireless computer network including a mobile appliance containing a single chip transceiver
GB2375246B (en) * 2001-04-30 2005-01-05 Wireless Systems Int Ltd Frequency conversion of signals
JP2002368642A (ja) * 2001-06-08 2002-12-20 Sony Corp 受信機およびｉｃ
US6628234B2 (en) * 2001-07-18 2003-09-30 Fast Location.Net, Llc Method and system for processing positioning signals in a stand-alone mode
US9052374B2 (en) 2001-07-18 2015-06-09 Fast Location.Net, Llc Method and system for processing positioning signals based on predetermined message data segment
US6515620B1 (en) 2001-07-18 2003-02-04 Fast Location.Net, Llc Method and system for processing positioning signals in a geometric mode
US6882309B2 (en) * 2001-07-18 2005-04-19 Fast Location. Net, Llc Method and system for processing positioning signals based on predetermined message data segment
US6529160B2 (en) 2001-07-18 2003-03-04 Fast Location.Net, Llc Method and system for determining carrier frequency offsets for positioning signals
EP1289123A1 (fr) 2001-08-10 2003-03-05 Asulab S.A. Dispositif à conversion de fréquence de signaux radiofréquences pour un récepteur GPS
GB0121993D0 (en) * 2001-09-12 2001-10-31 Koninkl Philips Electronics Nv Improvements in or relating to superheterodyne recievers
US6850745B2 (en) * 2002-01-23 2005-02-01 Broadcom Corp Method and apparatus for generating a self-correcting local oscillation
WO2003090370A1 (en) * 2002-04-22 2003-10-30 Cognio, Inc. Multiple-input multiple-output radio transceiver
US6728517B2 (en) * 2002-04-22 2004-04-27 Cognio, Inc. Multiple-input multiple-output radio transceiver
US7099406B2 (en) * 2002-08-30 2006-08-29 Rf Micro Devices, Inc. Alias sampling for IF-to-baseband conversion in a GPS receiver
US7197089B2 (en) * 2002-08-30 2007-03-27 Rf Micro Devices, Inc. Frequency plan for GPS receiver
US7065629B2 (en) * 2002-11-18 2006-06-20 Rf Micro Devices, Inc. Address translation logic for use in a GPS receiver
US8958789B2 (en) 2002-12-03 2015-02-17 Adc Telecommunications, Inc. Distributed digital antenna system
US20040166825A1 (en) * 2003-02-25 2004-08-26 Jen-Sheng Huang Wireless receiver
US7447491B2 (en) * 2003-06-06 2008-11-04 Silicon Laboratories Inc. Multi-tuner integrated circuit architecture utilizing frequency isolated local oscillators and associated method
US7272375B2 (en) 2004-06-30 2007-09-18 Silicon Laboratories Inc. Integrated low-IF terrestrial audio broadcast receiver and associated method
JP2006135814A (ja) * 2004-11-08 2006-05-25 Fujitsu Ltd 無線受信機
US7908080B2 (en) 2004-12-31 2011-03-15 Google Inc. Transportation routing
JP4631673B2 (ja) * 2005-07-27 2011-02-16 カシオ計算機株式会社 電波受信装置、電波受信回路及び電波時計
US7398073B2 (en) * 2005-09-06 2008-07-08 Skyworks Solutions, Inc. Low noise mixer
US7928807B2 (en) * 2005-09-16 2011-04-19 Qualcomm Incorporated Frequency synthesizer architecture for multi-band ultra-wideband system
DE102008057035A1 (de) 2007-11-16 2009-05-20 Fgup "Niima - Progress" Duales Navigationsterminal
DE102008005981B4 (de) 2008-01-24 2010-07-15 Atmel Automotive Gmbh Empfänger, Verfahren zum Empfang und Verwendung eines In-Phase-Signals und eines Quadraturphase-Signals
JP4811417B2 (ja) * 2008-02-14 2011-11-09 パナソニック株式会社 受信装置及び電子機器
GB2467179B (en) * 2009-01-27 2012-09-05 Samsung Electronics Co Ltd Data extraction from multi-carrier signals
EP2330442A3 (en) * 2009-11-17 2011-12-28 Samsung Electronics Co., Ltd. Navigation receivers and navigation methods thereof
GB2475675A (en) * 2009-11-17 2011-06-01 Samsung Electronics Co Ltd Navigation receiver operable with multiple navigation systems
US9182485B1 (en) * 2011-05-24 2015-11-10 Garmin International, Inc. Transmit/receive module for electronically steered weather radar
US9088468B2 (en) 2012-01-20 2015-07-21 Telefonaktiebolaget L M Ericsson (Publ) Double conversion dual-carrier radio frequency receiver
JP5974656B2 (ja) * 2012-06-14 2016-08-23 ソニー株式会社 受信装置
EP2746814A1 (en) * 2012-12-24 2014-06-25 u-blox AG A method of processing a radio frequency signal, a signal processing device for carrying out the method, a radio frequency front-end, a radio receiver and a GNSS receiver
US9645248B2 (en) * 2012-12-28 2017-05-09 Trimble Inc. Vehicle-based global navigation satellite system receiver system with radio frequency hardware component
FR3024550B1 (fr) * 2014-08-01 2020-10-09 Sagem Defense Securite Recepteur gnss a commutation d'oscillateur local ajustable en frequence
US9331634B2 (en) * 2014-08-01 2016-05-03 Nxp B.V. Frequency down-conversion
RU2583724C1 (ru) * 2015-01-26 2016-05-10 АО "Воентелеком" Супергетеродинный приемник сложных фазоманипулированных сигналов с двойным преобразованием частоты
JP2017069824A (ja) * 2015-09-30 2017-04-06 エスアイアイ・セミコンダクタ株式会社 受信機および通信システム
US10705407B2 (en) 2017-05-08 2020-07-07 Analog Photonics LLC Speckle reduction in photonic phased arrays
US11513224B2 (en) 2018-05-03 2022-11-29 Analog Photonics LLC Multi-static coherent LiDAR
US11525915B2 (en) 2018-05-03 2022-12-13 Analog Photonics LLC Multi-static coherent LiDAR
WO2020191303A1 (en) * 2019-03-20 2020-09-24 Analog Photonics LLC Multi-static coherent lidar

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR780714A (fr) * 1933-11-04 1935-05-02 Loewe Opta Gmbh Récepteur de télévision
US3931578A (en) * 1973-12-26 1976-01-06 General Electric Company Multiple frequency band receiver tuner system using single, non-bandswitched local oscillator
US4262361A (en) * 1979-06-29 1981-04-14 Edmac Associates, Inc. Variable bandwidth filtering and frequency converting system
US4429418A (en) * 1980-07-11 1984-01-31 Microdyne Corporation Frequency agile satellite receiver
US4580289A (en) * 1981-12-30 1986-04-01 Motorola, Inc. Fully integratable superheterodyne radio receiver utilizing tunable filters
US4476575A (en) * 1982-12-13 1984-10-09 General Electric Company Radio transceiver
US4521916A (en) * 1983-11-29 1985-06-04 Rca Corporation Frequency synthesis tuning control system for a double-conversion tuner
US4928106A (en) * 1988-07-14 1990-05-22 Ashtech Telesis, Inc. Global positioning system receiver with improved radio frequency and digital processing
US4944025A (en) * 1988-08-09 1990-07-24 At&E Corporation Direct conversion FM receiver with offset
FR2649570B1 (fr) * 1989-07-04 1991-09-20 Thomson Composants Microondes Systeme de reception de signaux t.v. retransmis par satellites
FR2651937B1 (fr) * 1989-09-14 1994-04-08 Alcatel Espace Transpondeur de mise a poste d'un satellite.
US5040240A (en) * 1989-11-30 1991-08-13 Magnavox Government And Industrial Electronics Company Receiver architecture for use with a global positioning system
JPH03224322A (ja) * 1990-01-29 1991-10-03 Toshiba Corp 選局回路
GB9115350D0 (en) * 1991-07-16 1991-08-28 Navstar Ltd A radio receiver
US5220688A (en) * 1991-07-18 1993-06-15 Industrial Technology Research Institute Frequency translating circuit with multiple stages using common local oscillator

Also Published As

Publication number Publication date
DE69222704T2 (de) 1998-02-12
ATE159392T1 (de) 1997-11-15
GB9514307D0 (en) 1995-09-13
GB2289809A (en) 1995-11-29
DK0523938T3 (da) 1998-05-04
GB9115350D0 (en) 1991-08-28
EP0523938B1 (en) 1997-10-15
GB2258776A (en) 1993-02-17
GB9214807D0 (en) 1992-08-26
DE69222704D1 (de) 1997-11-20
GB2258776B (en) 1996-01-03
GR3025248T3 (en) 1998-02-27
GB2289809B (en) 1996-01-31
US5606736A (en) 1997-02-25
EP0523938A1 (en) 1993-01-20
US5832375A (en) 1998-11-03

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