JPS5531328A - Modulator - Google Patents

Modulator

Info

Publication number
JPS5531328A
JPS5531328A JP10446778A JP10446778A JPS5531328A JP S5531328 A JPS5531328 A JP S5531328A JP 10446778 A JP10446778 A JP 10446778A JP 10446778 A JP10446778 A JP 10446778A JP S5531328 A JPS5531328 A JP S5531328A
Authority
JP
Japan
Prior art keywords
filter
oscillator
band
detector
frequency
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
JP10446778A
Other languages
Japanese (ja)
Inventor
Toshiyuki Saito
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 JP10446778A priority Critical patent/JPS5531328A/en
Publication of JPS5531328A publication Critical patent/JPS5531328A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To apply modulation to the voltage control oscillator at the frequency band by inserting the band erasion filter within the loop. CONSTITUTION:The modulator consists of the following component units: phase detector 1 to which reference frequency FR is applied; DC amplifier 2 to be connected to detector 1; low band pass filter 3 to be connected to amplifier 2; band erasion filter 5 to be connected to filter 3; and voltage control oscillator 4 each. And the output of filter 5 is connected to the input of oscillator 4, and the output of oscillator 4 is connected to detector 1. Then oscillator 4 is modulated by base band frequency FB.
JP10446778A 1978-08-29 1978-08-29 Modulator Pending JPS5531328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10446778A JPS5531328A (en) 1978-08-29 1978-08-29 Modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10446778A JPS5531328A (en) 1978-08-29 1978-08-29 Modulator

Publications (1)

Publication Number Publication Date
JPS5531328A true JPS5531328A (en) 1980-03-05

Family

ID=14381380

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10446778A Pending JPS5531328A (en) 1978-08-29 1978-08-29 Modulator

Country Status (1)

Country Link
JP (1) JPS5531328A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60145721U (en) * 1984-03-09 1985-09-27 日立電子株式会社 modulation circuit
JPS6267321A (en) * 1985-09-18 1987-03-27 Nippon Seiko Kk Self-aligning roller bearing
US4828404A (en) * 1988-05-16 1989-05-09 Nippon Seiko Kabushiki Kaisha Self-aligning roller bearing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60145721U (en) * 1984-03-09 1985-09-27 日立電子株式会社 modulation circuit
JPS6267321A (en) * 1985-09-18 1987-03-27 Nippon Seiko Kk Self-aligning roller bearing
US4828404A (en) * 1988-05-16 1989-05-09 Nippon Seiko Kabushiki Kaisha Self-aligning roller bearing

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