JPS6455911A - Frequency synthesizer - Google Patents

Frequency synthesizer

Info

Publication number
JPS6455911A
JPS6455911A JP62213533A JP21353387A JPS6455911A JP S6455911 A JPS6455911 A JP S6455911A JP 62213533 A JP62213533 A JP 62213533A JP 21353387 A JP21353387 A JP 21353387A JP S6455911 A JPS6455911 A JP S6455911A
Authority
JP
Japan
Prior art keywords
frequency
mixer
output
output frequency
variable
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
JP62213533A
Other languages
Japanese (ja)
Inventor
Yuji Arata
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP62213533A priority Critical patent/JPS6455911A/en
Publication of JPS6455911A publication Critical patent/JPS6455911A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To improve the stability of an output frequency and minute adjustment accuracy of frequency by providing a multiplier multiplying an output frequency of a reference frequency oscillator and providing a 2nd mixer between a 2nd voltage controlled oscillator and a 1st mixer in a 2nd variable frequency generator. CONSTITUTION:An output frequency of a reference frequency oscillator 2 is multiplied, the output frequency of the 2nd voltage controlled oscillator 15 is frequencyconverted by the 2nd mixer 18 so as to approach the frequency to the output frequency of the 1st variable frequency generator 8. The converted frequency and the output frequency of the 1st variable frequency generator 8 are used for both the inputs to the 1st mixer 11. Thus, a desired frequency is obtained from the output of the 1st mixer easily. The output frequency of the 1st mixer 11 is selected to one over several tens-several hundreds in comparison with the output frequency of the 2nd voltage controlled oscillator 15. Thus, the frequency division number of the 2nd variable frequency divider 16 is decreased, the loop gain of the 2nd variable frequency generator 15 is increased and the stability of the output frequency is increased.
JP62213533A 1987-08-27 1987-08-27 Frequency synthesizer Pending JPS6455911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62213533A JPS6455911A (en) 1987-08-27 1987-08-27 Frequency synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62213533A JPS6455911A (en) 1987-08-27 1987-08-27 Frequency synthesizer

Publications (1)

Publication Number Publication Date
JPS6455911A true JPS6455911A (en) 1989-03-02

Family

ID=16640762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62213533A Pending JPS6455911A (en) 1987-08-27 1987-08-27 Frequency synthesizer

Country Status (1)

Country Link
JP (1) JPS6455911A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017130784A (en) * 2016-01-20 2017-07-27 三菱電機株式会社 Frequency synthesizer
KR101865323B1 (en) * 2018-04-06 2018-06-07 한화시스템 주식회사 Frequency synthesizing method for identification friend or foe
KR101865324B1 (en) * 2018-04-06 2018-06-07 한화시스템 주식회사 Frequency synthesizing apparatus for identification friend or foe
US10277235B2 (en) 2015-04-15 2019-04-30 Mitsubishi Electric Corporation Synthesizer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10277235B2 (en) 2015-04-15 2019-04-30 Mitsubishi Electric Corporation Synthesizer
JP2017130784A (en) * 2016-01-20 2017-07-27 三菱電機株式会社 Frequency synthesizer
KR101865323B1 (en) * 2018-04-06 2018-06-07 한화시스템 주식회사 Frequency synthesizing method for identification friend or foe
KR101865324B1 (en) * 2018-04-06 2018-06-07 한화시스템 주식회사 Frequency synthesizing apparatus for identification friend or foe

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