JPS5544221A - Modulation system - Google Patents

Modulation system

Info

Publication number
JPS5544221A
JPS5544221A JP11601578A JP11601578A JPS5544221A JP S5544221 A JPS5544221 A JP S5544221A JP 11601578 A JP11601578 A JP 11601578A JP 11601578 A JP11601578 A JP 11601578A JP S5544221 A JPS5544221 A JP S5544221A
Authority
JP
Japan
Prior art keywords
base
signal
fed
switched
terminal
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
JP11601578A
Other languages
Japanese (ja)
Inventor
Hitoshi Fujisaki
Yasuhiro Toyomura
Hideo Onodera
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.)
Kokusai Denki Electric Inc
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP11601578A priority Critical patent/JPS5544221A/en
Publication of JPS5544221A publication Critical patent/JPS5544221A/en
Pending legal-status Critical Current

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  • Amplitude Modulation (AREA)

Abstract

PURPOSE: To realize the modulation system small in the carrier leakage even with no adjustment through circuit integration and large in the dynamic range even with lower power supply voltage.
CONSTITUTION: The modulation signal a is fed to the base of the transistors Q12, Q13 from the terminal IN1 and the modulated signal b is to the base of Q22, Q25 from the terminal IN2 to produce the signal c at the base of Q13. Further, the signal added to the base of Q14 is switched at Q23 to produce the signal d at the emitters of Q13, Q14, and this is fed to the base of Q20 of the differential amplifier COMP. The signal fed to the base of Q19 is switched with the modulated signal of opposite polarity as above to obtain the signal e at the base of Q18, and the signal f of Q17, Q18 is fed to the base of Q21 to obtain the output g. In this circuit, the carrier leakage is determined only with VBE and desired effect can be obtained with low power consumption by circuit integration.
COPYRIGHT: (C)1980,JPO&Japio
JP11601578A 1978-09-22 1978-09-22 Modulation system Pending JPS5544221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11601578A JPS5544221A (en) 1978-09-22 1978-09-22 Modulation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11601578A JPS5544221A (en) 1978-09-22 1978-09-22 Modulation system

Publications (1)

Publication Number Publication Date
JPS5544221A true JPS5544221A (en) 1980-03-28

Family

ID=14676690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11601578A Pending JPS5544221A (en) 1978-09-22 1978-09-22 Modulation system

Country Status (1)

Country Link
JP (1) JPS5544221A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919413A (en) * 1982-07-22 1984-01-31 Mitsubishi Electric Corp Balanced modulator
JPS60185406A (en) * 1984-03-02 1985-09-20 Rohm Co Ltd Balanced modulator
JPS62171223A (en) * 1986-01-23 1987-07-28 Rohm Co Ltd Waveform generator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919413A (en) * 1982-07-22 1984-01-31 Mitsubishi Electric Corp Balanced modulator
JPS60185406A (en) * 1984-03-02 1985-09-20 Rohm Co Ltd Balanced modulator
JPS62171223A (en) * 1986-01-23 1987-07-28 Rohm Co Ltd Waveform generator

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