JPS5513534A - Frequency modulator - Google Patents

Frequency modulator

Info

Publication number
JPS5513534A
JPS5513534A JP8571178A JP8571178A JPS5513534A JP S5513534 A JPS5513534 A JP S5513534A JP 8571178 A JP8571178 A JP 8571178A JP 8571178 A JP8571178 A JP 8571178A JP S5513534 A JPS5513534 A JP S5513534A
Authority
JP
Japan
Prior art keywords
modulation
carrier frequency
frequency
deviation
inputted
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.)
Granted
Application number
JP8571178A
Other languages
Japanese (ja)
Other versions
JPS6220731B2 (en
Inventor
Toshiaki Otani
Akio Murakami
Akira Ito
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
Nippon Electric Co Ltd
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, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8571178A priority Critical patent/JPS5513534A/en
Publication of JPS5513534A publication Critical patent/JPS5513534A/en
Publication of JPS6220731B2 publication Critical patent/JPS6220731B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a modulation wave which has a large quantity of deviation, a small distortion and a small AM-property noise by dividing input signals in phase and modulating respective signals and synthesizing outputs.
CONSTITUTION: Input signals are distributed to the same amplitude and the opposite polarity by signal distributor 2 and are inputted to FM modulator circuits 3 and 5 and are subjected to opposite-polarity frequency modulation. In case that the carrier frequency of FM modulator circuit 3, a deviation quantity of this carrier frequency, the carrier frequency of FM modulator circuit 5, and the deviation quantity of this carrier frequency are denoted as 1MHz, 5KHz, 900KHz and 5KHz respectively, modulation waves have the level made equal to each other by level adjustment equipments 7 and 8 and are inputted to mixer 9. The FM wave of carrier frequency 100kHz and deviation quantity 10KHz is obtained from mixer 9. A good-linearity modulation can be performed by using a high frequency for modulation can be performed by using a high frequency for modulation.
COPYRIGHT: (C)1980,JPO&Japio
JP8571178A 1978-07-13 1978-07-13 Frequency modulator Granted JPS5513534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8571178A JPS5513534A (en) 1978-07-13 1978-07-13 Frequency modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8571178A JPS5513534A (en) 1978-07-13 1978-07-13 Frequency modulator

Publications (2)

Publication Number Publication Date
JPS5513534A true JPS5513534A (en) 1980-01-30
JPS6220731B2 JPS6220731B2 (en) 1987-05-08

Family

ID=13866404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8571178A Granted JPS5513534A (en) 1978-07-13 1978-07-13 Frequency modulator

Country Status (1)

Country Link
JP (1) JPS5513534A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62133113A (en) * 1985-12-03 1987-06-16 Nippon Ester Co Ltd Polyester fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62133113A (en) * 1985-12-03 1987-06-16 Nippon Ester Co Ltd Polyester fiber

Also Published As

Publication number Publication date
JPS6220731B2 (en) 1987-05-08

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