JPS5513586A - Frequency modulation signal generation unit - Google Patents

Frequency modulation signal generation unit

Info

Publication number
JPS5513586A
JPS5513586A JP8657478A JP8657478A JPS5513586A JP S5513586 A JPS5513586 A JP S5513586A JP 8657478 A JP8657478 A JP 8657478A JP 8657478 A JP8657478 A JP 8657478A JP S5513586 A JPS5513586 A JP S5513586A
Authority
JP
Japan
Prior art keywords
frequency
center frequency
center
output
modulator
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
JP8657478A
Other languages
Japanese (ja)
Other versions
JPS6238883B2 (en
Inventor
Toshihiko Suzuki
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.)
EIDEN CO Ltd
EIDEN KK
Original Assignee
EIDEN CO Ltd
EIDEN KK
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 EIDEN CO Ltd, EIDEN KK filed Critical EIDEN CO Ltd
Priority to JP8657478A priority Critical patent/JPS5513586A/en
Publication of JPS5513586A publication Critical patent/JPS5513586A/en
Publication of JPS6238883B2 publication Critical patent/JPS6238883B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To make the waveform of the center frequency of generated conversion signals into a sine wave by interposing a band pass filter, which has a narrow band width, in the input side of signals including reference signals out of input lines of a last-stage frequency mixer.
CONSTITUTION: Self-osicillation frequency modulator FM is connected to input terminal IN, and its center frequency fm higher than prescribed is made center frequency fo. Osicillator OSC1 which osillates prescribed center frequency fo and oscillator OSC2 which oscillates the same frequency as center frequency fm of modulator FM are connected to second frequency mixer MIX2 independently. Output signal frequencies of this mixer MIX2 is set to fm±fo, and sum frequency fm+fo is supplied to first frequency mixer MIX through a BPF having a comparatively narrow band width. Then, the output of oscillator OSC2 is supplied to modulator FM through first and second frequency dividers DV1 and DV2 and phase detector PD. The output waveform of mixer MIX2 of this constitution is corrected by the output of the BPF so that the waveform at the center of center frequency fo may be a sine wave.
COPYRIGHT: (C)1980,JPO&Japio
JP8657478A 1978-07-15 1978-07-15 Frequency modulation signal generation unit Granted JPS5513586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8657478A JPS5513586A (en) 1978-07-15 1978-07-15 Frequency modulation signal generation unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8657478A JPS5513586A (en) 1978-07-15 1978-07-15 Frequency modulation signal generation unit

Publications (2)

Publication Number Publication Date
JPS5513586A true JPS5513586A (en) 1980-01-30
JPS6238883B2 JPS6238883B2 (en) 1987-08-20

Family

ID=13890773

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8657478A Granted JPS5513586A (en) 1978-07-15 1978-07-15 Frequency modulation signal generation unit

Country Status (1)

Country Link
JP (1) JPS5513586A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100250102B1 (en) * 1997-11-27 2000-04-01 이만택 Steaming machine for beauty

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100250102B1 (en) * 1997-11-27 2000-04-01 이만택 Steaming machine for beauty

Also Published As

Publication number Publication date
JPS6238883B2 (en) 1987-08-20

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