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JPS5530253A - Direct ssb modulation circuit - Google Patents

Direct ssb modulation circuit

Info

Publication number
JPS5530253A
JPS5530253A JP10359178A JP10359178A JPS5530253A JP S5530253 A JPS5530253 A JP S5530253A JP 10359178 A JP10359178 A JP 10359178A JP 10359178 A JP10359178 A JP 10359178A JP S5530253 A JPS5530253 A JP S5530253A
Authority
JP
Japan
Prior art keywords
phase
modulator
oscillator
output
input signal
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
JP10359178A
Other languages
Japanese (ja)
Inventor
Masao Ogino
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10359178A priority Critical patent/JPS5530253A/en
Publication of JPS5530253A publication Critical patent/JPS5530253A/en
Pending legal-status Critical Current

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  • Amplitude Modulation (AREA)

Abstract

PURPOSE: To obtain a signal accurately phase-shifted by 90° over the whole frequency band by modulating a sound, i.e. a multi-frequency input signal and then by phase-shifting its carrier frequency by 90°.
CONSTITUTION: The 1st and 2nd local oscillators 1 and 10 are provided; 1st phase- shifter 2 shifts the phase of the output of 1st oscillator 1 by 90° and 2nd phase shifter 9 phase-shifts the output of 2nd oscillator 10 by 90°. A multi-frequency input signal and the output of oscillator 10 are inputted to 1st modulator 8 and the multi- frequency input signal and the output of 2nd phase shifter 9 are inputted to 2nd modulator 7. Then, 1st balanced modulator 5 is supplied with the outputs of oscillator 1 and modulator 8, and 2nd balanced modulator 4 with the outputs of phase shifter 2 and modulator 7. Then, amplifier 6 is provided which obtains the sum and difference between the outputs of those modulators 4 and 5. Consequently, the multi-frequency input signal can precisely be phase-shifted by 90° and putting direct SSB modulation to practical use can be progressed by at least one step.
COPYRIGHT: (C)1980,JPO&Japio
JP10359178A 1978-08-25 1978-08-25 Direct ssb modulation circuit Pending JPS5530253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10359178A JPS5530253A (en) 1978-08-25 1978-08-25 Direct ssb modulation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10359178A JPS5530253A (en) 1978-08-25 1978-08-25 Direct ssb modulation circuit

Publications (1)

Publication Number Publication Date
JPS5530253A true JPS5530253A (en) 1980-03-04

Family

ID=14358002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10359178A Pending JPS5530253A (en) 1978-08-25 1978-08-25 Direct ssb modulation circuit

Country Status (1)

Country Link
JP (1) JPS5530253A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61138455A (en) * 1984-12-10 1986-06-25 Matsushita Electric Ind Co Ltd Separator for enclosed lead storage battery
JPS61269852A (en) * 1985-05-23 1986-11-29 Nippon Sheet Glass Co Ltd Separator for storage battery
JPS62154456A (en) * 1985-12-26 1987-07-09 Matsushita Electric Ind Co Ltd Lead-acid battery

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61138455A (en) * 1984-12-10 1986-06-25 Matsushita Electric Ind Co Ltd Separator for enclosed lead storage battery
JPH0526302B2 (en) * 1984-12-10 1993-04-15 Matsushita Electric Ind Co Ltd
JPS61269852A (en) * 1985-05-23 1986-11-29 Nippon Sheet Glass Co Ltd Separator for storage battery
JPH0521306B2 (en) * 1985-05-23 1993-03-24 Nippon Ita Garasu Kk
JPS62154456A (en) * 1985-12-26 1987-07-09 Matsushita Electric Ind Co Ltd Lead-acid battery

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