SG54478A1 - Improvements in or relating to radio receivers - Google Patents

Improvements in or relating to radio receivers

Info

Publication number
SG54478A1
SG54478A1 SG1997000824A SG1997000824A SG54478A1 SG 54478 A1 SG54478 A1 SG 54478A1 SG 1997000824 A SG1997000824 A SG 1997000824A SG 1997000824 A SG1997000824 A SG 1997000824A SG 54478 A1 SG54478 A1 SG 54478A1
Authority
SG
Singapore
Prior art keywords
relating
radio receivers
receivers
radio
Prior art date
Application number
SG1997000824A
Other languages
English (en)
Inventor
Knud Holtvoeth
Andreas Wichern
Wilfried E Knop
Original Assignee
Philips Electronics Nv
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 Philips Electronics Nv filed Critical Philips Electronics Nv
Publication of SG54478A1 publication Critical patent/SG54478A1/en

Links

Classifications

    • 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
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/08—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes
    • H03J7/12—Combination of automatic frequency control voltage with stabilised varactor supply voltage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/023—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using voltage variable capacitance diodes
    • 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
SG1997000824A 1996-03-20 1997-03-18 Improvements in or relating to radio receivers SG54478A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96301920 1996-03-20

Publications (1)

Publication Number Publication Date
SG54478A1 true SG54478A1 (en) 1998-11-16

Family

ID=8224857

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1997000824A SG54478A1 (en) 1996-03-20 1997-03-18 Improvements in or relating to radio receivers

Country Status (4)

Country Link
US (1) US6075979A (de)
JP (1) JP3974679B2 (de)
DE (1) DE69722494T2 (de)
SG (1) SG54478A1 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6970717B2 (en) * 2001-01-12 2005-11-29 Silicon Laboratories Inc. Digital architecture for radio-frequency apparatus and associated methods
US7221921B2 (en) * 1998-05-29 2007-05-22 Silicon Laboratories Partitioning of radio-frequency apparatus
US7035607B2 (en) * 1998-05-29 2006-04-25 Silicon Laboratories Inc. Systems and methods for providing an adjustable reference signal to RF circuitry
US7242912B2 (en) * 1998-05-29 2007-07-10 Silicon Laboratories Inc. Partitioning of radio-frequency apparatus
US7228109B2 (en) * 2001-01-12 2007-06-05 Silicon Laboratories Inc. DC offset reduction in radio-frequency apparatus and associated methods
US7024221B2 (en) * 2001-01-12 2006-04-04 Silicon Laboratories Inc. Notch filter for DC offset reduction in radio-frequency apparatus and associated methods
US6804497B2 (en) 2001-01-12 2004-10-12 Silicon Laboratories, Inc. Partitioned radio-frequency apparatus and associated methods
US7092675B2 (en) * 1998-05-29 2006-08-15 Silicon Laboratories Apparatus and methods for generating radio frequencies in communication circuitry using multiple control signals
JP4121640B2 (ja) * 1998-11-12 2008-07-23 富士通株式会社 局部発振回路およびその局部発振回路を含む受信回路
SE518416C2 (sv) * 1998-12-22 2002-10-08 Ericsson Telefon Ab L M Antenn-switch-modul
US6903617B2 (en) 2000-05-25 2005-06-07 Silicon Laboratories Inc. Method and apparatus for synthesizing high-frequency signals for wireless communications
US7177610B2 (en) * 2001-01-12 2007-02-13 Silicon Laboratories Inc. Calibrated low-noise current and voltage references and associated methods
US20030232613A1 (en) * 2001-01-12 2003-12-18 Kerth Donald A. Quadrature signal generation in radio-frequency apparatus and associated methods
US7031683B2 (en) * 2001-01-12 2006-04-18 Silicon Laboratories Inc. Apparatus and methods for calibrating signal-processing circuitry
US7158574B2 (en) * 2001-01-12 2007-01-02 Silicon Laboratories Inc. Digital interface in radio-frequency apparatus and associated methods
US7138858B2 (en) 2001-01-12 2006-11-21 Silicon Laboratories, Inc. Apparatus and methods for output buffer circuitry with constant output power in radio-frequency circuitry
US7035611B2 (en) * 2001-01-12 2006-04-25 Silicon Laboratories Inc. Apparatus and method for front-end circuitry in radio-frequency apparatus
AU2003220281A1 (en) * 2002-03-15 2003-09-29 Silicon Laboratories Inc. Radio-frequency apparatus and associated methods
FR2870002B1 (fr) * 2004-05-07 2006-09-08 Thales Sa Oscillateur a quartz thermostate et application a une balise de detresse
KR100668910B1 (ko) * 2006-02-15 2007-01-12 삼성전자주식회사 전세계 위치 확인 시스템을 이용한 이동 단말의 기준시계공유 장치 및 방법
GB201918211D0 (en) * 2019-12-11 2020-01-22 Nordic Semiconductor Asa Low power electronic oscillators

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE77185T1 (de) * 1987-09-28 1992-06-15 Siemens Ag Verfahren zur temperaturkompensation eines spannungsgesteuerten quarzoszillators in einem phasenregelkreis.
GB2233513A (en) * 1989-06-09 1991-01-09 Philips Electronic Associated Oscillators
FI91821C (fi) * 1991-02-22 1994-08-10 Nokia Mobile Phones Ltd Radiopuhelimen automaattinen taajuudensäätökytkentä
FI90383C (fi) * 1992-03-09 1994-01-25 Nokia Mobile Phones Ltd Menetelmä radiopuhelimen referenssitaajuuden stabiloimiseksi
JP3186500B2 (ja) * 1995-03-29 2001-07-11 三菱電機株式会社 無線装置及び無線装置の調整方法
US5691666A (en) * 1995-06-07 1997-11-25 Owen; Joseph C. Full threshold FM deviation compression feedback demodulator and method
US5740525A (en) * 1996-05-10 1998-04-14 Motorola, Inc. Method and apparatus for temperature compensation of a reference oscillator in a communication device
US5731742A (en) * 1996-12-17 1998-03-24 Motorola Inc. External component programming for crystal oscillator temperature compensation

Also Published As

Publication number Publication date
DE69722494D1 (de) 2003-07-10
JPH1013278A (ja) 1998-01-16
US6075979A (en) 2000-06-13
DE69722494T2 (de) 2004-05-19
JP3974679B2 (ja) 2007-09-12

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