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GB2350988B - Frequency spreading clock modulation - Google Patents

Frequency spreading clock modulation

Info

Publication number
GB2350988B
GB2350988B GB0022423A GB0022423A GB2350988B GB 2350988 B GB2350988 B GB 2350988B GB 0022423 A GB0022423 A GB 0022423A GB 0022423 A GB0022423 A GB 0022423A GB 2350988 B GB2350988 B GB 2350988B
Authority
GB
United Kingdom
Prior art keywords
frequency spreading
clock modulation
spreading clock
modulation
frequency
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.)
Expired - Fee Related
Application number
GB0022423A
Other versions
GB2350988A (en
GB0022423D0 (en
Inventor
Gregory R Black
Alexander Wayne Hietala
Mark Robert Burns
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 Inc
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
Priority claimed from US08/608,451 external-priority patent/US5812590A/en
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of GB0022423D0 publication Critical patent/GB0022423D0/en
Publication of GB2350988A publication Critical patent/GB2350988A/en
Application granted granted Critical
Publication of GB2350988B publication Critical patent/GB2350988B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • H04B2215/067—Reduction of clock or synthesizer reference frequency harmonics by modulation dispersion

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
GB0022423A 1996-02-28 1997-02-06 Frequency spreading clock modulation Expired - Fee Related GB2350988B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/608,451 US5812590A (en) 1996-02-28 1996-02-28 Frequency spreading clock modulation
GB9702438A GB2311444B (en) 1996-02-28 1997-02-06 Frequency spreading clock modulation

Publications (3)

Publication Number Publication Date
GB0022423D0 GB0022423D0 (en) 2000-11-01
GB2350988A GB2350988A (en) 2000-12-13
GB2350988B true GB2350988B (en) 2001-02-14

Family

ID=26310946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0022423A Expired - Fee Related GB2350988B (en) 1996-02-28 1997-02-06 Frequency spreading clock modulation

Country Status (1)

Country Link
GB (1) GB2350988B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10352779A1 (en) * 2003-11-12 2005-01-27 Siemens Ag Communications circuit for a wireless communications terminal has a digital interface between HF signal processing and base band chips with a controller that controls the interface frequency dependent on the received frequency
US7498871B2 (en) * 2006-04-19 2009-03-03 Sony Ericsson Mobile Communications Ab Spectrum spreaders including tunable filters and related devices and methods
US20080137786A1 (en) * 2006-12-08 2008-06-12 Waltho Alan E Adaptively modifying the even harmonic content of clock signals
GB201003703D0 (en) * 2010-03-05 2010-04-21 Icera Inc Method and device for sending signals between a radio frequency circuit and a baseband circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4507796A (en) * 1982-10-20 1985-03-26 Printronix, Inc. Electronic apparatus having low radio frequency interference from system clock signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4507796A (en) * 1982-10-20 1985-03-26 Printronix, Inc. Electronic apparatus having low radio frequency interference from system clock signal

Also Published As

Publication number Publication date
GB2350988A (en) 2000-12-13
GB0022423D0 (en) 2000-11-01

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20110120 AND 20110126

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20160206