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GB9020678D0 - Improvements in or relating to radio receivers - Google Patents

Improvements in or relating to radio receivers

Info

Publication number
GB9020678D0
GB9020678D0 GB909020678A GB9020678A GB9020678D0 GB 9020678 D0 GB9020678 D0 GB 9020678D0 GB 909020678 A GB909020678 A GB 909020678A GB 9020678 A GB9020678 A GB 9020678A GB 9020678 D0 GB9020678 D0 GB 9020678D0
Authority
GB
United Kingdom
Prior art keywords
relating
radio receivers
receivers
radio
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.)
Withdrawn
Application number
GB909020678A
Other versions
GB2250877A (en
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.)
Motorola Solutions Israel Ltd
Original Assignee
Motorola Israel Ltd
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 Motorola Israel Ltd filed Critical Motorola Israel Ltd
Priority to GB9020678A priority Critical patent/GB2250877A/en
Publication of GB9020678D0 publication Critical patent/GB9020678D0/en
Publication of GB2250877A publication Critical patent/GB2250877A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/02—Details
    • H03D1/04—Modifications of demodulators to reduce interference by undesired signals
    • 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
    • H03D3/002—Modifications of demodulators to reduce interference by undesired signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0041—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers
    • H03J1/005—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers in a loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2215/00—Reducing interference at the transmission system level
    • H04B2215/064—Reduction of clock or synthesizer reference frequency harmonics
    • H04B2215/065—Reduction of clock or synthesizer reference frequency harmonics by changing the frequency of clock or reference frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Noise Elimination (AREA)
  • Superheterodyne Receivers (AREA)
GB9020678A 1990-09-22 1990-09-22 Shifting spurious frequencies away from signal frequency Withdrawn GB2250877A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9020678A GB2250877A (en) 1990-09-22 1990-09-22 Shifting spurious frequencies away from signal frequency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9020678A GB2250877A (en) 1990-09-22 1990-09-22 Shifting spurious frequencies away from signal frequency

Publications (2)

Publication Number Publication Date
GB9020678D0 true GB9020678D0 (en) 1990-11-07
GB2250877A GB2250877A (en) 1992-06-17

Family

ID=10682596

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9020678A Withdrawn GB2250877A (en) 1990-09-22 1990-09-22 Shifting spurious frequencies away from signal frequency

Country Status (1)

Country Link
GB (1) GB2250877A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276784A (en) * 1993-03-22 1994-10-05 Motorola Gmbh Shifting spurious frequencies away from received frequency
JPH0870258A (en) 1994-09-30 1996-03-12 Matsushita Electric Ind Co Ltd Radio equipment
US5745848A (en) * 1996-03-04 1998-04-28 Motorola, Inc. Method and apparatus for eliminating interference caused by spurious signals in a communication device
US5794131A (en) * 1996-03-19 1998-08-11 Ericsson Inc. Reducing or eliminating radio transmitter mixer spurious outputs
US7092043B2 (en) 1998-11-12 2006-08-15 Broadcom Corporation Fully integrated tuner architecture
EP1091487B1 (en) * 1999-10-08 2002-12-11 Motorola, Inc. Method and apparatus for eliminating self quieter signals generated in synthesiser receivers
EP1160970B1 (en) * 2000-05-29 2006-12-27 Sony Deutschland GmbH Interference suppresser for AM signals , and method
GB2372174B (en) * 2001-02-12 2003-07-16 Matsushita Electric Ind Co Ltd Intermediate frequency planning in radio transmitters and receivers
US8463216B2 (en) * 2011-01-20 2013-06-11 Panasonic Automotive Systems Company Of America, Division Of Panasonic Corporation Of North America Method and apparatus for sensing inter-modulation to improve radio performance in single and dual tuner

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU562869B2 (en) * 1983-05-16 1987-06-18 Motorola, Inc. A receiver system for eliminating self-quieting spurious responses
US4870699A (en) * 1986-03-26 1989-09-26 General Electric Company Method and apparatus for controlling the frequency of operation and at least one further variable operating parameter of a radio communications device

Also Published As

Publication number Publication date
GB2250877A (en) 1992-06-17

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)