JPS5588409A - Wide-band frequency modulation device - Google Patents

Wide-band frequency modulation device

Info

Publication number
JPS5588409A
JPS5588409A JP16242578A JP16242578A JPS5588409A JP S5588409 A JPS5588409 A JP S5588409A JP 16242578 A JP16242578 A JP 16242578A JP 16242578 A JP16242578 A JP 16242578A JP S5588409 A JPS5588409 A JP S5588409A
Authority
JP
Japan
Prior art keywords
diode
modulation signal
circuit
variable capacity
wide
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
JP16242578A
Other languages
Japanese (ja)
Inventor
Mitsuo Noguchi
Takeshi Hayasaka
Kazuo Sakamoto
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 JP16242578A priority Critical patent/JPS5588409A/en
Publication of JPS5588409A publication Critical patent/JPS5588409A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To increase the band width of the oscillation frequency by correcting the gain/loss caused by the amplifier circuit not only by the resonance circuit but by the variable capacity diode inserted into the positive feedback circuit.
CONSTITUTION: The modulation signal applied to terminal 8 is applied to variable capacity diode 17 through coil 18 as well as to variable capacity diode 4. Here coil 19 gives the by-pass to the modulation signal applied to diode 17, and capacitor 20 blocks the modulation signal each. When the capacity value of diode 17 varies by the modulation signal simultaneously with the resonance frequency of resonance circuit 7, the resonance frequency of circuit 7 increases by the modulation signal. And the capacity of diode 17 is decreased and increased with the increased and decreased oscillation frequencies respectively.
COPYRIGHT: (C)1980,JPO&Japio
JP16242578A 1978-12-26 1978-12-26 Wide-band frequency modulation device Pending JPS5588409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16242578A JPS5588409A (en) 1978-12-26 1978-12-26 Wide-band frequency modulation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16242578A JPS5588409A (en) 1978-12-26 1978-12-26 Wide-band frequency modulation device

Publications (1)

Publication Number Publication Date
JPS5588409A true JPS5588409A (en) 1980-07-04

Family

ID=15754352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16242578A Pending JPS5588409A (en) 1978-12-26 1978-12-26 Wide-band frequency modulation device

Country Status (1)

Country Link
JP (1) JPS5588409A (en)

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