JPS5513586A - Frequency modulation signal generation unit - Google Patents
Frequency modulation signal generation unitInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100250102B1 (en) * | 1997-11-27 | 2000-04-01 | 이만택 | Steaming machine for beauty |
-
1978
- 1978-07-15 JP JP8657478A patent/JPS5513586A/en active Granted
Cited By (1)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2048148A1 (en) | Transmitter | |
JPS5513586A (en) | Frequency modulation signal generation unit | |
JPS5513512A (en) | Frequency converter | |
JPS5271966A (en) | Triangular wave generator | |
JPS56160192A (en) | Processing circuit of chrominance signal | |
JPS55160975A (en) | Controlling circuit for inverter | |
JPS54114028A (en) | Direct phase reproducing device | |
JPS56117405A (en) | Fm modulation system | |
JPS5350917A (en) | Chrominance component recording system | |
JPS5311506A (en) | Frequency converter | |
JPS5469007A (en) | Transceiver | |
JPS54111742A (en) | Frequency production system | |
JPS5379418A (en) | Slot line frequency converter | |
JPS57142025A (en) | Sweep signal generator | |
JPS5460817A (en) | Fm modulation system for fm radio transmission-reception device | |
JPS5652911A (en) | Method and apparatus for phase modulation | |
JPS5525837A (en) | Fm demodulator circuit | |
JPS5689157A (en) | Modulating circuit | |
JPS5686559A (en) | Psk modulation system | |
JPS5588458A (en) | Modulation system | |
JPS58204630A (en) | System for constituting radio equipment | |
JPS5757037A (en) | Mobile radio machine | |
JPS5539423A (en) | Double tuned frequency discrimination circuit | |
JPS56164685A (en) | Audio signal recording circuit | |
FR2305888A1 (en) | Programmable signal generator with phase locked loop - has two integral multiple reference frequencies mixed with output of VCO |