JPS5563105A - Frequency converter for extra-high frequency - Google Patents
Frequency converter for extra-high frequencyInfo
- Publication number
- JPS5563105A JPS5563105A JP13548478A JP13548478A JPS5563105A JP S5563105 A JPS5563105 A JP S5563105A JP 13548478 A JP13548478 A JP 13548478A JP 13548478 A JP13548478 A JP 13548478A JP S5563105 A JPS5563105 A JP S5563105A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- converter
- oscillation frequency
- supplied
- discrimanator
- 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
Links
Landscapes
- Superheterodyne Receivers (AREA)
- Radio Relay Systems (AREA)
Abstract
PURPOSE: To stabilize the oscillation frequency of the local oscillator in the frequency converter regardless of the temperature variation with a simple constitution in which just the common transmission line is used.
CONSTITUTION: Parabola antenna 10 installed on the roof, etc. receives the wave of the SHF band sent from the broadcasting satellite. The received wave is supplied to frequency converter 1, converted into the UHF band signal, led indoors through common transmission line 6, receives signal process 31 via transformer 30 after amplification 29, and also supplied to frequency discriminator 7. The oscillation frequency control signal sent from discrimanator 7 is supplied to the gate of transistor 11 through line 6 and furthermore via filter 24 which blocks the passage of the AC current from AC power source 8. Thus the local oscillation frequency of converter 1 is controlled. In this case, discrimanator 7 is provided indoors to secure a high stability for the characteristics to the temperature variation. Accordingly, the local oscillation frequency can be held in a high accuracy and high stability although converter 1 may be installed outdoors.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13548478A JPS5563105A (en) | 1978-11-02 | 1978-11-02 | Frequency converter for extra-high frequency |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13548478A JPS5563105A (en) | 1978-11-02 | 1978-11-02 | Frequency converter for extra-high frequency |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5563105A true JPS5563105A (en) | 1980-05-13 |
Family
ID=15152790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13548478A Pending JPS5563105A (en) | 1978-11-02 | 1978-11-02 | Frequency converter for extra-high frequency |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5563105A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4592093A (en) * | 1984-01-13 | 1986-05-27 | Sony Corporation | Super high frequency receiver |
US4606074A (en) * | 1984-06-14 | 1986-08-12 | Winegard Company | Automatic voltage line loss compensation control for an antenna receiver |
US4608710A (en) * | 1982-07-15 | 1986-08-26 | Masprodenkoh Kabushikikaisha | Apparatus for receiving satellite broadcasts |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4942212A (en) * | 1972-05-02 | 1974-04-20 | ||
JPS53110416A (en) * | 1977-03-09 | 1978-09-27 | Nec Corp | Repeating and transmission system |
-
1978
- 1978-11-02 JP JP13548478A patent/JPS5563105A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4942212A (en) * | 1972-05-02 | 1974-04-20 | ||
JPS53110416A (en) * | 1977-03-09 | 1978-09-27 | Nec Corp | Repeating and transmission system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4608710A (en) * | 1982-07-15 | 1986-08-26 | Masprodenkoh Kabushikikaisha | Apparatus for receiving satellite broadcasts |
US4592093A (en) * | 1984-01-13 | 1986-05-27 | Sony Corporation | Super high frequency receiver |
US4606074A (en) * | 1984-06-14 | 1986-08-12 | Winegard Company | Automatic voltage line loss compensation control for an antenna receiver |
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