JPS6490690A - Tuner for receiving satellite broadcasting - Google Patents
Tuner for receiving satellite broadcastingInfo
- Publication number
- JPS6490690A JPS6490690A JP24900787A JP24900787A JPS6490690A JP S6490690 A JPS6490690 A JP S6490690A JP 24900787 A JP24900787 A JP 24900787A JP 24900787 A JP24900787 A JP 24900787A JP S6490690 A JPS6490690 A JP S6490690A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- inputted
- signal
- image
- frequency
- 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
Abstract
PURPOSE:To suppress an image interference and to improve the amplitude characteristic of a passing area by disposing an image trap circuit consisting of an induced M type low pass filter before a frequency converting circuit. CONSTITUTION:The output signal of a wide band amplifying circuit 1 passing through the image trap circuit 2 consisting of the induced M type LPF is inputted to a frequency mixer 3, converted to a second intermediate frequency by a signal from a local oscillator 5, inputted to a second intermediate frequency amplifier 6 and externally outputted. In such a way, since the signal is inputted to the mixer 3 of the frequency converting circuit through the circuit 2, the image interference is suppressed. Further, the circuit 2 constitutes the LPF, so that the amplitude characteristic of a receiving signal band can be improved, as well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24900787A JPS6490690A (en) | 1987-09-30 | 1987-09-30 | Tuner for receiving satellite broadcasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24900787A JPS6490690A (en) | 1987-09-30 | 1987-09-30 | Tuner for receiving satellite broadcasting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6490690A true JPS6490690A (en) | 1989-04-07 |
Family
ID=17186623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24900787A Pending JPS6490690A (en) | 1987-09-30 | 1987-09-30 | Tuner for receiving satellite broadcasting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6490690A (en) |
-
1987
- 1987-09-30 JP JP24900787A patent/JPS6490690A/en active Pending
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