WO2002084870A3 - Methods and apparatus for tuning rf-filters in radio receivers - Google Patents

Methods and apparatus for tuning rf-filters in radio receivers Download PDF

Info

Publication number
WO2002084870A3
WO2002084870A3 PCT/EP2002/004154 EP0204154W WO02084870A3 WO 2002084870 A3 WO2002084870 A3 WO 2002084870A3 EP 0204154 W EP0204154 W EP 0204154W WO 02084870 A3 WO02084870 A3 WO 02084870A3
Authority
WO
WIPO (PCT)
Prior art keywords
tuning
signal
band
pass filter
end circuit
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.)
Ceased
Application number
PCT/EP2002/004154
Other languages
French (fr)
Other versions
WO2002084870A2 (en
Inventor
Martin Isberg
Bjoern Lindquist
Bo Lindell
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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
Priority claimed from US09/836,523 external-priority patent/US20020151287A1/en
Priority claimed from US09/899,339 external-priority patent/US6978125B2/en
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to AU2002316851A priority Critical patent/AU2002316851A1/en
Priority to EP02745233A priority patent/EP1380108A2/en
Publication of WO2002084870A2 publication Critical patent/WO2002084870A2/en
Publication of WO2002084870A3 publication Critical patent/WO2002084870A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/0805—Details of the phase-locked loop the loop being adapted to provide an additional control signal for use outside the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
    • H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
    • 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

Landscapes

  • Superheterodyne Receivers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

A tuning arrangement in a radio receiver includes a front-end circuit having a tunable band-pass filter that is capable of tunably selecting channels within at least one frequency band of an RF signal. A noise source coupled to an input of the tunable band-pass filter introduces a wide-band noise signal into the front-end circuit. A signal detector coupled to an output of the front-end circuit measures at least one signal power associated with a filtered noise signal derived from the wide-band noise signal. A tuning controller, coupled to the tunable band-pass filter by a tuning control signal, adjusts the tuning control signal in response to the at least one measured signal power for tuning the tunable band-pass filter to a desired filter response.
PCT/EP2002/004154 2001-04-17 2002-04-15 Methods and apparatus for tuning rf-filters in radio receivers Ceased WO2002084870A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002316851A AU2002316851A1 (en) 2001-04-17 2002-04-15 Methods and apparatus for tuning rf-filters in radio receivers
EP02745233A EP1380108A2 (en) 2001-04-17 2002-04-15 Methods and apparatus for tuning pre-selection filters in radio receivers

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/836,523 US20020151287A1 (en) 2001-04-17 2001-04-17 Receiver front-end filter tuning
US09/836,523 2001-04-17
US09/899,339 US6978125B2 (en) 2001-07-05 2001-07-05 Methods and apparatus for tuning pre-selection filters in radio receivers
US09/899,339 2001-07-05

Publications (2)

Publication Number Publication Date
WO2002084870A2 WO2002084870A2 (en) 2002-10-24
WO2002084870A3 true WO2002084870A3 (en) 2002-12-12

Family

ID=27125877

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/EP2002/004154 Ceased WO2002084870A2 (en) 2001-04-17 2002-04-15 Methods and apparatus for tuning rf-filters in radio receivers
PCT/EP2002/004202 Ceased WO2002089326A1 (en) 2001-04-17 2002-04-16 Receiver front-end filter tuning

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/004202 Ceased WO2002089326A1 (en) 2001-04-17 2002-04-16 Receiver front-end filter tuning

Country Status (3)

Country Link
EP (1) EP1380108A2 (en)
AU (1) AU2002316851A1 (en)
WO (2) WO2002084870A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003285658A1 (en) * 2003-01-07 2004-07-29 Koninklijke Philips Electronics N.V. High-frequency receiver circuit having a frequency-selective element
US11387859B2 (en) * 2020-06-29 2022-07-12 Motorola Solutions, Inc. Method and apparatus for mitigating image interference in a receiver
CN112083370B (en) * 2020-08-25 2024-02-09 山东浪潮科学研究院有限公司 Method, equipment and medium for calibrating direct current bias of mixer

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003634A1 (en) * 1978-02-09 1979-08-22 Motorola, Inc. Method of aligning a radio receiver and means for indicating the alignment of a radio receiver
EP0618676A1 (en) * 1993-03-29 1994-10-05 Koninklijke Philips Electronics N.V. Tunable device
WO1995009480A1 (en) * 1993-09-29 1995-04-06 Kenji Yokoyama Fm threshold expansion detector circuit
WO1999040679A1 (en) * 1998-02-04 1999-08-12 Ericsson, Inc. Apparatus and methods for tuning bandpass filters
US6052420A (en) * 1997-05-15 2000-04-18 Northern Telecom Limited Adaptive multiple sub-band common-mode RFI suppression
EP1128555A1 (en) * 2000-02-24 2001-08-29 Semiconductor Ideas to The Market (ItoM) BV Receiver

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528698A (en) * 1983-12-22 1985-07-09 Motorola, Inc. Tuning system for RF receiver
US4837852A (en) * 1985-06-17 1989-06-06 Toko, Inc. Electronic tuning circuit for AM receiver which is easy to effect tracking adjustment
US5428829A (en) * 1992-09-28 1995-06-27 Delco Electronics Corporation Method and apparatus for tuning and aligning an FM receiver
SE508290C2 (en) * 1997-01-21 1998-09-21 Ericsson Telefon Ab L M Receiver device for two frequency bands
DE69920273T2 (en) * 1998-11-12 2005-09-22 Broadcom Corp., Irvine INTEGRATED TUNER ARCHITECTURE

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003634A1 (en) * 1978-02-09 1979-08-22 Motorola, Inc. Method of aligning a radio receiver and means for indicating the alignment of a radio receiver
EP0618676A1 (en) * 1993-03-29 1994-10-05 Koninklijke Philips Electronics N.V. Tunable device
WO1995009480A1 (en) * 1993-09-29 1995-04-06 Kenji Yokoyama Fm threshold expansion detector circuit
US6052420A (en) * 1997-05-15 2000-04-18 Northern Telecom Limited Adaptive multiple sub-band common-mode RFI suppression
WO1999040679A1 (en) * 1998-02-04 1999-08-12 Ericsson, Inc. Apparatus and methods for tuning bandpass filters
EP1128555A1 (en) * 2000-02-24 2001-08-29 Semiconductor Ideas to The Market (ItoM) BV Receiver

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KLEIN W ET AL: "TV-TUNER ATA", RADIO FERNSEHEN ELEKTRONIK, VEB VERLAG TECHNIK. BERLIN, DE, vol. 44, no. 2, 1 February 1995 (1995-02-01), pages 26 - 27, XP000494292, ISSN: 1436-1574 *

Also Published As

Publication number Publication date
AU2002316851A1 (en) 2002-10-28
WO2002089326A1 (en) 2002-11-07
WO2002084870A2 (en) 2002-10-24
EP1380108A2 (en) 2004-01-14

Similar Documents

Publication Publication Date Title
US7894786B2 (en) Gain controlled and multi-band processing receiver
US20090280766A1 (en) Method And System For On-Demand Signal Notching In A Receiver
KR20030029406A (en) Transmission frequency compensation apparatus and method for mobile communication device
EP0969601B1 (en) Method for improving the wanted signal in a radio receiving unit
EP1339166A3 (en) Direct conversion receivers and methods therefor
CN101447795B (en) Low-IF Digital Receiver and Its Frequency Modulation Method
EP0451277A4 (en) Automatic gain control circuit
CN106656227B (en) 3-18 GHz microwave receiving front end
WO2002084870A3 (en) Methods and apparatus for tuning rf-filters in radio receivers
WO2005064786A3 (en) Mixer with feedback
KR20040108215A (en) Apparatus for controlling LNA in the receiver and method thereof
EP2750297A1 (en) Method and system for input signal conditioning for radio transceiver circuits
PL1653647T3 (en) Signal receiver and method for optimizing gain of a tuner
KR101660708B1 (en) Automatic level compensating circuit with adjustable output change
KR20080004877A (en) Tuner
KR100856328B1 (en) Television Tuner with Signal Path Switching
CN217010848U (en) Multichannel simple AGC ultrashort wave radio station voice receiver module
KR20070071547A (en) Medium main gain control device of digital tuner
CN115276694B (en) Frequency hopping receiver and gain automatic control method thereof
KR20050034520A (en) Radio transmitter
JP2790473B2 (en) Squelch circuit and multimode receiver provided with the squelch circuit
JP4883001B2 (en) Receiving machine
PL1653608T3 (en) Signal receiver and method for controlling gain of a tuner
TW200723719A (en) Extended range received signal strength indicator (RSSI) module and method of extending range of RF input power of RSSI module in radio receiver
CN204836092U (en) Noise optimal control circuit of link is put to low noise

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ CZ DE DE DK DK DM DZ EC EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ CZ DE DE DK DK DM DZ EC EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2002745233

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2002745233

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP

WWW Wipo information: withdrawn in national office

Ref document number: 2002745233

Country of ref document: EP