HK1006494A1 - Fm-receiver with dynamic intermediate frequency (if) filter tuning - Google Patents

Fm-receiver with dynamic intermediate frequency (if) filter tuning Download PDF

Info

Publication number
HK1006494A1
HK1006494A1 HK98105223A HK98105223A HK1006494A1 HK 1006494 A1 HK1006494 A1 HK 1006494A1 HK 98105223 A HK98105223 A HK 98105223A HK 98105223 A HK98105223 A HK 98105223A HK 1006494 A1 HK1006494 A1 HK 1006494A1
Authority
HK
Hong Kong
Prior art keywords
signal
tuning control
demodulator
amplifier
filter
Prior art date
Application number
HK98105223A
Other languages
German (de)
English (en)
French (fr)
Chinese (zh)
Other versions
HK1006494B (en
Inventor
Bijker Wolter
Georg Kasperkovitz Wolfdietrich
Clemens De Ruyter Hendricus
Arie Sloof Willem
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of HK1006494B publication Critical patent/HK1006494B/en
Publication of HK1006494A1 publication Critical patent/HK1006494A1/en

Links

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
    • 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
    • H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
    • H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
    • H03D3/005—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling a bandpass filter
    • 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
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Noise Elimination (AREA)
HK98105223A 1992-06-26 1998-06-12 Fm-receiver with dynamic intermediate frequency (if) filter tuning HK1006494A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP92201906 1992-06-26
EP92201906 1992-06-26

Publications (2)

Publication Number Publication Date
HK1006494B HK1006494B (en) 1999-02-26
HK1006494A1 true HK1006494A1 (en) 1999-02-26

Family

ID=8210724

Family Applications (1)

Application Number Title Priority Date Filing Date
HK98105223A HK1006494A1 (en) 1992-06-26 1998-06-12 Fm-receiver with dynamic intermediate frequency (if) filter tuning

Country Status (8)

Country Link
US (1) US5404589A (forum.php)
EP (1) EP0576084B1 (forum.php)
JP (1) JP3363949B2 (forum.php)
KR (1) KR100291127B1 (forum.php)
DE (1) DE69317016T2 (forum.php)
HK (1) HK1006494A1 (forum.php)
SG (1) SG44868A1 (forum.php)
TW (1) TW263640B (forum.php)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW228043B (forum.php) * 1992-06-26 1994-08-11 Philips Electronics Nv
GB2270223B (en) * 1992-08-29 1996-06-19 Motorola Israel Ltd A communications system
GB9326464D0 (en) * 1993-12-24 1994-02-23 Philips Electronics Uk Ltd Receiver having an adjustable bandwidth filter
GB9415120D0 (en) * 1994-07-27 1994-09-14 Philips Electronics Uk Ltd Improvements in or relating to zero IF receivers
GB2296613A (en) * 1994-12-21 1996-07-03 Univ Bristol Image-reject mixers
US5757864A (en) * 1995-08-17 1998-05-26 Rockwell Semiconductor Systems, Inc. Receiver with filters offset correction
US5694079A (en) * 1996-04-04 1997-12-02 Lucent Technologies Inc. Digital FM demodulator using a lagrangian interpolation function
US5862466A (en) * 1997-01-09 1999-01-19 Hewlett-Packard Company Method and apparatus for automatically balancing a radio-frequency mixer
US6633550B1 (en) 1997-02-20 2003-10-14 Telefonaktiebolaget Lm Ericsson (Publ) Radio transceiver on a chip
US6112065A (en) * 1997-11-14 2000-08-29 Ericsson Inc. Low to higher if conversion for active filtered limited IF systems
US5926752A (en) * 1998-01-15 1999-07-20 Trw Inc. Apparatus and method for remote convenience message transmission and control with a tunable filter receiver
US6266522B1 (en) 1998-02-04 2001-07-24 Ericsson Inc. Apparatus and methods for tuning bandpass filters
US7558556B1 (en) * 1999-10-21 2009-07-07 Broadcom Corporation Adaptive radio transceiver with subsampling mixers
GB9927289D0 (en) * 1999-11-19 2000-01-12 Koninkl Philips Electronics Nv Improvements in or relating to polyphase receivers
DE10060483A1 (de) * 2000-12-06 2002-06-13 Philips Corp Intellectual Pty Schaltungsanordnung
US6658245B2 (en) 2001-03-28 2003-12-02 Motorola, Inc. Radio receiver having a dynamic bandwidth filter and method therefor
US6885853B2 (en) * 2001-04-11 2005-04-26 National Scientific Corporation Communications receiver with integrated IF filter and method therefor
US20040125240A1 (en) * 2001-05-11 2004-07-01 Stikvoort Edward Ferdinand Integrated tuner circuit
US6957054B2 (en) * 2002-08-09 2005-10-18 Freescale Semiconductor, Inc. Radio receiver having a variable bandwidth IF filter and method therefor
US7272375B2 (en) * 2004-06-30 2007-09-18 Silicon Laboratories Inc. Integrated low-IF terrestrial audio broadcast receiver and associated method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222867A (en) * 1975-08-15 1977-02-21 Victor Co Of Japan Ltd Demodulation system for angle modulated wave signal
JPS54140442A (en) * 1978-04-21 1979-10-31 Seiko Instr & Electronics Ltd Automatic sensitivity control circuit for receiver
US4653117A (en) * 1985-11-18 1987-03-24 Motorola, Inc. Dual conversion FM receiver using phase locked direct conversion IF
DE3724604A1 (de) * 1987-04-15 1988-12-01 H U C Elektronik Gmbh Anordnung zum filtern eines fm-ukw-empfangssignals
WO1990013175A1 (en) * 1989-04-21 1990-11-01 N.V. Philips' Gloeilampenfabrieken Tunable resonance amplifier
WO1991001592A1 (en) * 1989-07-15 1991-02-07 Philips Japan, Ltd. Automatic gain control circuit
US5283557A (en) * 1991-07-05 1994-02-01 Ncr Corporation Method for converting high resolution data into lower resolution data

Also Published As

Publication number Publication date
EP0576084A1 (en) 1993-12-29
US5404589A (en) 1995-04-04
DE69317016T2 (de) 1998-08-13
DE69317016D1 (de) 1998-03-26
SG44868A1 (en) 1997-12-19
KR100291127B1 (ko) 2001-09-17
JPH0677854A (ja) 1994-03-18
EP0576084B1 (en) 1998-02-18
TW263640B (forum.php) 1995-11-21
JP3363949B2 (ja) 2003-01-08

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)