JPS5769928A - High-speed frequency switching oscillator - Google Patents

High-speed frequency switching oscillator

Info

Publication number
JPS5769928A
JPS5769928A JP14785080A JP14785080A JPS5769928A JP S5769928 A JPS5769928 A JP S5769928A JP 14785080 A JP14785080 A JP 14785080A JP 14785080 A JP14785080 A JP 14785080A JP S5769928 A JPS5769928 A JP S5769928A
Authority
JP
Japan
Prior art keywords
synthesizers
frequency
switch
control signal
frequency switching
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.)
Pending
Application number
JP14785080A
Other languages
Japanese (ja)
Inventor
Masayuki Tezuka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP14785080A priority Critical patent/JPS5769928A/en
Publication of JPS5769928A publication Critical patent/JPS5769928A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To enable high-speed sweep reception, by providing a plurality of oscillators which can be selected for frequency digitally. CONSTITUTION:Two digital synthesizers 8, 8' are used and desired frequency series is taken as f0, f1, f2..., then control signals 10a, 19b are added from a control signal generator 10 so that the synthesizer 8 can oscillate f1, f3, f5... and the synthesizer 8' can oscillate f0, f2, f4.... When a switch 9 picks up a section where the frequency by the both synthesizers 8, 8' is stable, a control signal 10c is applied to the switch 9 from a control signal generator 10 so that the f0, f1, f2, f3... can be picked up sequentially at the output 11. Since the switching speed of the switch 9 can be sufficiently faster than the transient response time of the synthesizers 8, 8', even if the frequency switching interval is shorter up to the same one as the transient response time of the synthesizers 8, 8', a signal negligible in the frequency switching transient time can be obtained at the output 11.
JP14785080A 1980-10-21 1980-10-21 High-speed frequency switching oscillator Pending JPS5769928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14785080A JPS5769928A (en) 1980-10-21 1980-10-21 High-speed frequency switching oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14785080A JPS5769928A (en) 1980-10-21 1980-10-21 High-speed frequency switching oscillator

Publications (1)

Publication Number Publication Date
JPS5769928A true JPS5769928A (en) 1982-04-30

Family

ID=15439661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14785080A Pending JPS5769928A (en) 1980-10-21 1980-10-21 High-speed frequency switching oscillator

Country Status (1)

Country Link
JP (1) JPS5769928A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6278925A (en) * 1985-10-01 1987-04-11 Nec Corp Data communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6278925A (en) * 1985-10-01 1987-04-11 Nec Corp Data communication system
JPH067650B2 (en) * 1985-10-01 1994-01-26 日本電気株式会社 Data communication method

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