JPS6419807A - Fm demodulator - Google Patents

Fm demodulator

Info

Publication number
JPS6419807A
JPS6419807A JP17633187A JP17633187A JPS6419807A JP S6419807 A JPS6419807 A JP S6419807A JP 17633187 A JP17633187 A JP 17633187A JP 17633187 A JP17633187 A JP 17633187A JP S6419807 A JPS6419807 A JP S6419807A
Authority
JP
Japan
Prior art keywords
output
changed
input
exor
inverter
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
JP17633187A
Other languages
Japanese (ja)
Inventor
Naomichi Ikemoto
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
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 filed Critical NEC Corp
Priority to JP17633187A priority Critical patent/JPS6419807A/en
Publication of JPS6419807A publication Critical patent/JPS6419807A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To constitute a phase detecting type FM modulator of a simple CMOS circuit by latching an input signal, inputting said input signal to an exclusive OR circuit, and outputting the low frequency component of an output thereof. CONSTITUTION:When a rectangular wave is inputted as an FM signal and the Q output of a D type flip flop 4 goes to L, at the time of changing the input from L to H, an EXOR 6 output is changed from L to H. When a capaci tor C1 is charged by a current I3 passing through a transistor M3 and a termi nal potential reaches the threshold V2 of an inverter 2, the output of the inverter 3 is changed from L to H and the Q output of the D type flip flop 4 is changed from L to H. In such a way, in the output of the EXOR 6, the pulse of a con stant time width td1 is obtained for every change of the input from L to H or from H to L and by passing it through a low pass filter 7, an FM demodulating output is obtained.
JP17633187A 1987-07-14 1987-07-14 Fm demodulator Pending JPS6419807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17633187A JPS6419807A (en) 1987-07-14 1987-07-14 Fm demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17633187A JPS6419807A (en) 1987-07-14 1987-07-14 Fm demodulator

Publications (1)

Publication Number Publication Date
JPS6419807A true JPS6419807A (en) 1989-01-23

Family

ID=16011722

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17633187A Pending JPS6419807A (en) 1987-07-14 1987-07-14 Fm demodulator

Country Status (1)

Country Link
JP (1) JPS6419807A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160003004A (en) 2013-05-23 2016-01-08 가부시키가이샤 리코 Method for producing polymer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160003004A (en) 2013-05-23 2016-01-08 가부시키가이샤 리코 Method for producing polymer

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