JPH0277939U - - Google Patents
Info
- Publication number
- JPH0277939U JPH0277939U JP15624088U JP15624088U JPH0277939U JP H0277939 U JPH0277939 U JP H0277939U JP 15624088 U JP15624088 U JP 15624088U JP 15624088 U JP15624088 U JP 15624088U JP H0277939 U JPH0277939 U JP H0277939U
- Authority
- JP
- Japan
- Prior art keywords
- frequency converter
- oscillator
- local oscillator
- frequency
- fixed
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Superheterodyne Receivers (AREA)
Description
第１図はこの考案に係る受信装置を衛星放送用
受信装置に適用した場合の一例を示すブロツク図
、第２図及び第３図は従来の受信装置のブロツク
図である。
１０…ＢＳチユーナ、２０…ＢＳコンバータ、
２３，３２…ミキサ、２４，４１…局部発振回路
、２５，５１…バンドパスフイルタ、４０…ＰＬ
Ｌ、４２……プリスケーラ、４３…プログラマブ
ルデバイダ、４７…位相比較器、５２…ＦＭ検波
回路、６０…スイツチ、７１…マイクロコンピユ
ータ。
FIG. 1 is a block diagram showing an example of a case where the receiving device according to the invention is applied to a satellite broadcasting receiving device, and FIGS. 2 and 3 are block diagrams of conventional receiving devices. 10...BS tuner, 20...BS converter,
23, 32...Mixer, 24, 41...Local oscillation circuit, 25, 51...Band pass filter, 40...PL
L, 42... Prescaler, 43... Programmable divider, 47... Phase comparator, 52... FM detection circuit, 60... Switch, 71... Microcomputer.
Claims (1)
変換器で構成され、 上記第１の周波数変換器に使用されている第１
の局部発振器は固定発振器となされ、 上記第２の周波数変換器に使用されている第２
の局部発振器は可変発振器となされ、 上記第２の周波数変換器はＰＬＬとして構成さ
れると共に、上記第２の周波数変換器より出力さ
れた第２の中間周波信号がＡＦＴ信号として供給
されるようになされたことを特徴とする受信装置
。[Claims for Utility Model Registration] A first frequency converter comprising a first frequency converter and a second frequency converter each having a local oscillator, the first frequency converter being used in the first frequency converter.
The local oscillator is a fixed oscillator, and the second local oscillator used in the second frequency converter is a fixed oscillator.
The local oscillator is a variable oscillator, the second frequency converter is configured as a PLL, and the second intermediate frequency signal output from the second frequency converter is supplied as an AFT signal. A receiving device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15624088U JPH0277939U (en) | 1988-11-30 | 1988-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15624088U JPH0277939U (en) | 1988-11-30 | 1988-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0277939U true JPH0277939U (en) | 1990-06-14 |
Family
ID=31434605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15624088U Pending JPH0277939U (en) | 1988-11-30 | 1988-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0277939U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5863240A (en) * | 1981-09-23 | 1983-04-15 | シ−メンス・アクチエンゲゼルシヤフト | Receiver circuit |
-
1988
- 1988-11-30 JP JP15624088U patent/JPH0277939U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5863240A (en) * | 1981-09-23 | 1983-04-15 | シ−メンス・アクチエンゲゼルシヤフト | Receiver circuit |