JPS5547705A - Voltage controlled oscillation circuit - Google Patents

Voltage controlled oscillation circuit

Info

Publication number
JPS5547705A
JPS5547705A JP12073778A JP12073778A JPS5547705A JP S5547705 A JPS5547705 A JP S5547705A JP 12073778 A JP12073778 A JP 12073778A JP 12073778 A JP12073778 A JP 12073778A JP S5547705 A JPS5547705 A JP S5547705A
Authority
JP
Japan
Prior art keywords
phase
adder
signal
circuit
addition
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
JP12073778A
Other languages
Japanese (ja)
Other versions
JPS6123685B2 (en
Inventor
Shinichiro Taguchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12073778A priority Critical patent/JPS5547705A/en
Publication of JPS5547705A publication Critical patent/JPS5547705A/en
Publication of JPS6123685B2 publication Critical patent/JPS6123685B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To increase the stability by lowering the phase shift sensitivity, through a plurality of phase shifters coupled via buffer, in a phase shift type oscillation circuit.
CONSTITUTION: The output signal a0 of the tank circuit 11 is kept constant for the amplitude with the limiter circuit 12 and it is fed to the adders 22 and 23 and also to the delay phase circuit 13 and advance phase circuit 14. The delay phase is made at the phase delay circuits 13 and 17 and the phase lead is at the phase advance circuits 14 and 18, respectively at two stages. The signal phase shifted is made for addition at the adder 22 after addition at the adder 19. The addition of the reference phase signal a, output signal c of the adder 22 and inversion output signal -b of the adder 19 are added at the adder 23. In this case, the phase of the output signal d of the adder 23 can be changed by changing the relative amplitude of each signal with the external control voltage Vc. Oscillation is made by positive feedback of this addition signal d to the tank circuit 11.
COPYRIGHT: (C)1980,JPO&Japio
JP12073778A 1978-09-30 1978-09-30 Voltage controlled oscillation circuit Granted JPS5547705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12073778A JPS5547705A (en) 1978-09-30 1978-09-30 Voltage controlled oscillation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12073778A JPS5547705A (en) 1978-09-30 1978-09-30 Voltage controlled oscillation circuit

Publications (2)

Publication Number Publication Date
JPS5547705A true JPS5547705A (en) 1980-04-04
JPS6123685B2 JPS6123685B2 (en) 1986-06-06

Family

ID=14793730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12073778A Granted JPS5547705A (en) 1978-09-30 1978-09-30 Voltage controlled oscillation circuit

Country Status (1)

Country Link
JP (1) JPS5547705A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59154804A (en) * 1983-02-23 1984-09-03 Hitachi Ltd Vco circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59154804A (en) * 1983-02-23 1984-09-03 Hitachi Ltd Vco circuit
JPH0318761B2 (en) * 1983-02-23 1991-03-13 Hitachi Ltd

Also Published As

Publication number Publication date
JPS6123685B2 (en) 1986-06-06

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