JPS6442994A - Frequency shift circuit - Google Patents
Frequency shift circuitInfo
- Publication number
- JPS6442994A JPS6442994A JP62198079A JP19807987A JPS6442994A JP S6442994 A JPS6442994 A JP S6442994A JP 62198079 A JP62198079 A JP 62198079A JP 19807987 A JP19807987 A JP 19807987A JP S6442994 A JPS6442994 A JP S6442994A
- Authority
- JP
- Japan
- Prior art keywords
- band
- signal
- frequency
- high precision
- shifted
- 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
- Television Systems (AREA)
Abstract
PURPOSE:To obtain a frequency shift circuit with wide frequency band width by separating a high precision signal to plural frequency band signal, executing amplitude modulation, removing the high harmonic component of sample frequency mixed within an original signal band, extracting each frequency-shifted high precision signal and adding them. CONSTITUTION:The high precision signal is separated to the plural kinds of frequency band signal such as the YH1 of the 1.2fsc-1.5fsc band and the YH2 of the 1.4fsc-1.8fsc band, for example. For the separated signal YH1 and YH2, a carrier mu0 is respectively amplitude-modulated. Then the frequency-shifted YH1' signal is generated in a band pass filter 0.7fsc-fsc band and the frequency- shifted YH2' signal is generated in a band pass filter 0.4fsc-0.8fsc band. In this case, turneback from the high harmonic component is not mixed to the signals YH1' and YH2'. Then, when the both of them is added, the high precision signal can be constituted in the 0.4fsc-fsc band. Thus the frequency shift whose band width is wide can be attained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62198079A JP2559418B2 (en) | 1987-08-10 | 1987-08-10 | Frequency shift circuit and method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62198079A JP2559418B2 (en) | 1987-08-10 | 1987-08-10 | Frequency shift circuit and method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6442994A true JPS6442994A (en) | 1989-02-15 |
JP2559418B2 JP2559418B2 (en) | 1996-12-04 |
Family
ID=16385168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62198079A Expired - Lifetime JP2559418B2 (en) | 1987-08-10 | 1987-08-10 | Frequency shift circuit and method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2559418B2 (en) |
-
1987
- 1987-08-10 JP JP62198079A patent/JP2559418B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2559418B2 (en) | 1996-12-04 |
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