WO2004019378A3 - Method and apparatus for avoiding spurious signal receiver desensitizing - Google Patents

Method and apparatus for avoiding spurious signal receiver desensitizing Download PDF

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Publication number
WO2004019378A3
WO2004019378A3 PCT/US2003/024402 US0324402W WO2004019378A3 WO 2004019378 A3 WO2004019378 A3 WO 2004019378A3 US 0324402 W US0324402 W US 0324402W WO 2004019378 A3 WO2004019378 A3 WO 2004019378A3
Authority
WO
WIPO (PCT)
Prior art keywords
communication device
frequency
different channels
system clock
tuned
Prior art date
Application number
PCT/US2003/024402
Other languages
French (fr)
Other versions
WO2004019378A2 (en
WO2004019378B1 (en
Inventor
Gregory R Black
Charles Philipp Binzel
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Priority to AU2003258043A priority Critical patent/AU2003258043A1/en
Publication of WO2004019378A2 publication Critical patent/WO2004019378A2/en
Publication of WO2004019378A3 publication Critical patent/WO2004019378A3/en
Publication of WO2004019378B1 publication Critical patent/WO2004019378B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
    • 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
    • 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

Abstract

An apparatus and method for eliminating interference caused by spurious signals in communication signals communicated via a communication device on any one of a plurality of different channels, the communication device operating at a rate set by a system clock signal. The system clock frequency is generated at a first frequency, the first frequency generating spurious signals on at least one of the different channels. The system clock frequency is toggled by a first predetermined amount to a second frequency when the communication device is to be tuned to one of the different channels so as to remove the spurious signals from the tuned channel. The communication device is tuned to the at least one of the different channels. A return of the timing error to a predetermined value is synchronized at a start of a receive data capture event.
PCT/US2003/024402 2002-08-23 2003-08-05 Method and apparatus for avoiding spurious signal receiver desensitizing WO2004019378A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003258043A AU2003258043A1 (en) 2002-08-23 2003-08-05 Method and apparatus for avoiding spurious signal receiver desensitizing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/226,688 2002-08-23
US10/226,688 US6898420B2 (en) 2002-08-23 2002-08-23 Method and apparatus for avoiding spurious signal receiver desensitizing

Publications (3)

Publication Number Publication Date
WO2004019378A2 WO2004019378A2 (en) 2004-03-04
WO2004019378A3 true WO2004019378A3 (en) 2004-04-29
WO2004019378B1 WO2004019378B1 (en) 2004-06-10

Family

ID=31946325

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/024402 WO2004019378A2 (en) 2002-08-23 2003-08-05 Method and apparatus for avoiding spurious signal receiver desensitizing

Country Status (4)

Country Link
US (1) US6898420B2 (en)
AU (1) AU2003258043A1 (en)
TW (1) TWI327829B (en)
WO (1) WO2004019378A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7035614B2 (en) * 2002-12-13 2006-04-25 Microtune (Texas), L.P. System and method for discovering frequency related spurs in a multi-conversion tuner
US7904024B2 (en) * 2004-09-28 2011-03-08 Zoran Corporation System and method of eliminating or minimizing Lo-Related interference from tuners
US7783259B2 (en) * 2004-09-28 2010-08-24 Microtune (Texas), L.P. System and method of eliminating or minimizing LO-related interference from tuners
US20070199067A1 (en) * 2005-12-13 2007-08-23 Motorola, Inc. Anti-detonation device and method
US7626462B1 (en) 2006-05-02 2009-12-01 Rf Micro Devices, Inc. Fractional-N based digital AFC system with a translational PLL transmitter
US8068573B1 (en) * 2007-04-27 2011-11-29 Rf Micro Devices, Inc. Phase dithered digital communications system
US8020026B1 (en) 2008-02-29 2011-09-13 Rf Micro Devices, Inc. Phase-aligning corrected and uncorrected clocks
US8259876B2 (en) * 2008-03-21 2012-09-04 Skyworks Solutions, Inc. System and method for tuning a radio receiver
GB201115119D0 (en) 2011-09-01 2011-10-19 Multi Mode Multi Media Solutions Nv Generation of digital clock for system having RF circuitry
CN103297002B (en) 2013-06-08 2016-08-31 华为技术有限公司 A kind of method and apparatus of AF panel
FR3032573B1 (en) 2015-02-06 2017-01-27 St Microelectronics Alps Sas METHOD AND SYSTEM FOR TRANSMITTING AND / OR RECEIVING AUDIO SIGNALS INCORPORATING A FREQUENCY EVASION MECHANISM OF THE TRANSMISSION CLOCK

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4896318A (en) * 1987-11-18 1990-01-23 Hitachi, Ltd. Method for cancelling echo in a transmitter and an apparatus therefor
US5745848A (en) * 1996-03-04 1998-04-28 Motorola, Inc. Method and apparatus for eliminating interference caused by spurious signals in a communication device
US5926514A (en) * 1997-03-03 1999-07-20 Motorola, Inc. Apparatus for clock shifting in an integrated transceiver
US6345175B1 (en) * 1995-09-07 2002-02-05 Sony Corporation Apparatus and method for preventing beat interference

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4545072A (en) * 1982-02-22 1985-10-01 Motorola, Inc. Method and apparatus for eliminating interference due to spurious signals generated in synthesized receivers
US5226058A (en) 1991-09-30 1993-07-06 Motorola, Inc. Spread spectrum data processor clock
US5263055A (en) 1991-11-04 1993-11-16 Motorola, Inc. Apparatus and method for reducing harmonic interference generated by a clock signal
US5335363A (en) * 1991-12-30 1994-08-02 Arinc Research Corporation Signal interference reduction device and method
US5812590A (en) 1996-02-28 1998-09-22 Motorola, Inc. Frequency spreading clock modulation
CN1084969C (en) * 1995-05-12 2002-05-15 艾利森电话股份有限公司 Spurious signal reduction in RF transmitter integrated circuits
US6567654B1 (en) * 1999-10-28 2003-05-20 Matsushita Electronic Components De Baja California, S.A. De C.V. Elimination of spurious signals in double conversion tuner using a dynamic intermediate frequency and a preselected crystal reference frequency

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4896318A (en) * 1987-11-18 1990-01-23 Hitachi, Ltd. Method for cancelling echo in a transmitter and an apparatus therefor
US6345175B1 (en) * 1995-09-07 2002-02-05 Sony Corporation Apparatus and method for preventing beat interference
US5745848A (en) * 1996-03-04 1998-04-28 Motorola, Inc. Method and apparatus for eliminating interference caused by spurious signals in a communication device
US5926514A (en) * 1997-03-03 1999-07-20 Motorola, Inc. Apparatus for clock shifting in an integrated transceiver

Also Published As

Publication number Publication date
WO2004019378A2 (en) 2004-03-04
TWI327829B (en) 2010-07-21
WO2004019378B1 (en) 2004-06-10
US20040203396A1 (en) 2004-10-14
AU2003258043A8 (en) 2004-03-11
US6898420B2 (en) 2005-05-24
AU2003258043A1 (en) 2004-03-11
TW200414697A (en) 2004-08-01

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