JPS641336A - Microwave transmitter - Google Patents

Microwave transmitter

Info

Publication number
JPS641336A
JPS641336A JP15550787A JP15550787A JPS641336A JP S641336 A JPS641336 A JP S641336A JP 15550787 A JP15550787 A JP 15550787A JP 15550787 A JP15550787 A JP 15550787A JP S641336 A JPS641336 A JP S641336A
Authority
JP
Japan
Prior art keywords
frequency
loop
microwave transmitter
caused
oscillating
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
JP15550787A
Other languages
Japanese (ja)
Other versions
JPH011336A (en
Inventor
Yoichi Onishi
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP62-155507A priority Critical patent/JPH011336A/en
Priority claimed from JP62-155507A external-priority patent/JPH011336A/en
Publication of JPS641336A publication Critical patent/JPS641336A/en
Publication of JPH011336A publication Critical patent/JPH011336A/en
Pending legal-status Critical Current

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  • Transmitters (AREA)

Abstract

PURPOSE: To simplify the mechanism of a microwave transmitter, by setting the oscillating frequencies of two local oscillators in such a way that the polarities caused by two times of frequency converting operations carried out at frequency mixers, become opposite to each other.
CONSTITUTION: The oscillating frequencies of 1st and 2nd local oscillators 3 and 7 are set in such a way that the polarities caused by two times of the frequency converting operations carried out at the 1st and 2nd frequency mixers 2 and 6 become opposite to each other. Moreover, the 2nd local oscillator 7 uses the output signal of a frequency synthesizer 11 of a relatively low frequency as a reference signal source and constitutes a loop together with a phase comparator 12 and loop amplifier 13. The DC component of the feedback voltage signal of the loop branched at a branching terminal 14 provided on the midway of the loop is cut off by a capacitor 15 and the AC component of the voltage signal only is impressed upon the oscillating frequency controlling voltage impressing terminal of the 1st local oscillator 3. Therefore, no special mechanical vibration preventing measure is required against vibrations caused by mechanical vibrations, a shock, or acoustic pressure from the outside and the microwave transmitter can be simplified.
COPYRIGHT: (C)1989,JPO&Japio
JP62-155507A 1987-06-24 microwave transmission equipment Pending JPH011336A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-155507A JPH011336A (en) 1987-06-24 microwave transmission equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-155507A JPH011336A (en) 1987-06-24 microwave transmission equipment

Publications (2)

Publication Number Publication Date
JPS641336A true JPS641336A (en) 1989-01-05
JPH011336A JPH011336A (en) 1989-01-05

Family

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