GB1305542A - - Google Patents

Info

Publication number
GB1305542A
GB1305542A GB1305542DA GB1305542A GB 1305542 A GB1305542 A GB 1305542A GB 1305542D A GB1305542D A GB 1305542DA GB 1305542 A GB1305542 A GB 1305542A
Authority
GB
United Kingdom
Prior art keywords
crystal
frequency shift
frequency
controlled
heading
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
Application number
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 filed Critical
Publication of GB1305542A publication Critical patent/GB1305542A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

1305542 Frequency shift oscillators GENERAL ELECTRIC CO Ltd 6 Feb 1970 [6 Nov 1968] 52627/68 Heading H3R In a crystal controlled oscillator for frequency shift signalling, the frequency is shifted by diode gates 12, 15; 14, 17; which are controlled by voltages at 16, 18 to switch preset capacitors 11 or 13 in circuit with the crystal 6.
GB1305542D 1968-11-06 1968-11-06 Expired GB1305542A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5262768 1968-11-06

Publications (1)

Publication Number Publication Date
GB1305542A true GB1305542A (en) 1973-02-07

Family

ID=10464654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1305542D Expired GB1305542A (en) 1968-11-06 1968-11-06

Country Status (1)

Country Link
GB (1) GB1305542A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2274033A (en) * 1992-12-16 1994-07-06 Murata Manufacturing Co Voltage controlled oscillator
GB2324918A (en) * 1997-02-19 1998-11-04 Motorola Inc Voltage controlled oscillators

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2274033A (en) * 1992-12-16 1994-07-06 Murata Manufacturing Co Voltage controlled oscillator
US5379003A (en) * 1992-12-16 1995-01-03 Murata Manufacturing Co., Ltd. VCO and buffer having noise filter on power supply line
GB2274033B (en) * 1992-12-16 1996-10-30 Murata Manufacturing Co Voltage-controlled oscillation circuit
GB2324918A (en) * 1997-02-19 1998-11-04 Motorola Inc Voltage controlled oscillators
GB2324918B (en) * 1997-02-19 2001-04-04 Motorola Inc Method and apparatus for transmitting radio frequency signals

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees