GB9425738D0 - A transmit reference oscillator for satellite communications - Google Patents

A transmit reference oscillator for satellite communications

Info

Publication number
GB9425738D0
GB9425738D0 GBGB9425738.3A GB9425738A GB9425738D0 GB 9425738 D0 GB9425738 D0 GB 9425738D0 GB 9425738 A GB9425738 A GB 9425738A GB 9425738 D0 GB9425738 D0 GB 9425738D0
Authority
GB
United Kingdom
Prior art keywords
reference oscillator
satellite communications
transmit reference
transmit
satellite
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Withdrawn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
GBGB9425738.3A
Other versions
GB2285353A (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.)
Electronics and Telecommunications Research Institute ETRI
KT Corp
Original Assignee
Electronics and Telecommunications Research Institute ETRI
KT Corp
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 Electronics and Telecommunications Research Institute ETRI, KT Corp filed Critical Electronics and Telecommunications Research Institute ETRI
Publication of GB9425738D0 publication Critical patent/GB9425738D0/en
Publication of GB2285353A publication Critical patent/GB2285353A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/19—Earth-synchronous stations
    • 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
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Radio Relay Systems (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
GB9425738A 1993-12-29 1994-12-20 A transmit reference oscillator for satellite communications Withdrawn GB2285353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930030901A KR960014676B1 (en) 1993-12-29 1993-12-29 Satellite telecommunication

Publications (2)

Publication Number Publication Date
GB9425738D0 true GB9425738D0 (en) 1995-02-22
GB2285353A GB2285353A (en) 1995-07-05

Family

ID=19373890

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9425738A Withdrawn GB2285353A (en) 1993-12-29 1994-12-20 A transmit reference oscillator for satellite communications

Country Status (5)

Country Link
JP (1) JPH07273644A (en)
KR (1) KR960014676B1 (en)
CA (1) CA2139191A1 (en)
DE (1) DE4447142A1 (en)
GB (1) GB2285353A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7796024B2 (en) 2007-02-07 2010-09-14 Db Systems, Llc Automated multi-purpose alert system with sensory interrupts

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932821A (en) * 1974-11-08 1976-01-13 Narco Scientific Industries, Inc. Out of lock detector for phase lock loop synthesizer
US4182994A (en) * 1977-08-22 1980-01-08 Rca Corporation Phase locked loop tuning system including stabilized time interval control circuit
JPS58107715A (en) * 1981-12-22 1983-06-27 Sony Corp Channel selecting device
JPS60107920A (en) * 1983-11-16 1985-06-13 Toshiba Corp Communication equipment using phase synchronizing circuit
JPS61157028A (en) * 1984-12-28 1986-07-16 Fujitsu Ltd Frequency synthesizer
JPH01256224A (en) * 1988-04-05 1989-10-12 Fujitsu Ltd Synthesizer channel detecting circuit
JPH0529932A (en) * 1991-07-24 1993-02-05 Matsushita Electric Ind Co Ltd Clock changeover circuit

Also Published As

Publication number Publication date
KR950022254A (en) 1995-07-28
KR960014676B1 (en) 1996-10-19
CA2139191A1 (en) 1995-06-30
GB2285353A (en) 1995-07-05
JPH07273644A (en) 1995-10-20
DE4447142A1 (en) 1995-07-06

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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)