JPH0457935U - - Google Patents
Info
- Publication number
- JPH0457935U JPH0457935U JP9938790U JP9938790U JPH0457935U JP H0457935 U JPH0457935 U JP H0457935U JP 9938790 U JP9938790 U JP 9938790U JP 9938790 U JP9938790 U JP 9938790U JP H0457935 U JPH0457935 U JP H0457935U
- Authority
- JP
- Japan
- Prior art keywords
- received power
- output
- intermediate frequency
- receiving device
- frequency amplifier
- 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
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Radio Relay Systems (AREA)
Description
第１図は本考案の一実施例のブロツク図、第２
図は従来の宇宙局用受信装置のブロツク図である
。
１……アンテナ、２……フロントエンド、３…
…周波数変換器、４……中間周波増幅器、５……
受信電力検出器、６……復調器、７……スケルチ
スイツチ、８……遅延回路、９……合成器、１０
Ａ，１０Ｂ……受信装置。
Fig. 1 is a block diagram of an embodiment of the present invention;
The figure is a block diagram of a conventional receiver for a space station. 1...Antenna, 2...Front end, 3...
...Frequency converter, 4...Intermediate frequency amplifier, 5...
Received power detector, 6...Demodulator, 7...Squelch switch, 8...Delay circuit, 9...Synthesizer, 10
A, 10B... Receiving device.
Claims (1)
ナの受信信号を増幅する中間周波増幅器と、この
中間周波増幅器の出力を復調する復調器と、前記
中間周波増幅器の出力信号を受信電力としてモニ
タする受信電力検出器と、この受信電力検出器の
モニタレベルが所定の受信レベル以下に低下した
場合に制御信号を出力し、前記復調器の出力を断
とするスケルチスイツチと、前記スケルチスイツ
チの出力である２系統の復調信号を合成する合成
器とを有する宇宙局用受信装置において、前記受
信電力検出器と前記スケルチスイツチとの間に遅
延回路を備えたことを特徴とする宇宙局用受信装
置。 ２ 前記遅延回路が受信入力が低い方から高い方
に移行して行く状態の時に遅延動作を行わせるよ
うに制御し、受信入力電力が低下して行きスケル
チ動作を行う状態の時には遅延なしの動作を行う
ことを特徴とする請求項１記載の宇宙局用受信装
置。[Claims for Utility Model Registration] 1. At least two antennas, an intermediate frequency amplifier that amplifies the received signal of each antenna, a demodulator that demodulates the output of the intermediate frequency amplifier, and an output signal of the intermediate frequency amplifier. a received power detector that monitors the received power as received power; a squelch switch that outputs a control signal and turns off the output of the demodulator when the monitored level of the received power detector drops below a predetermined received level; A space station receiving device comprising a combiner for combining two systems of demodulated signals output from the squelch switch, characterized in that a delay circuit is provided between the received power detector and the squelch switch. Receiving equipment for space stations. 2. The delay circuit is controlled to perform a delay operation when the reception input is transitioning from low to high, and operates without delay when the reception input power is decreasing and the squelch operation is performed. 2. The receiving device for a space station according to claim 1, wherein the space station receiving device performs the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9938790U JPH0457935U (en) | 1990-09-21 | 1990-09-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9938790U JPH0457935U (en) | 1990-09-21 | 1990-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0457935U true JPH0457935U (en) | 1992-05-19 |
Family
ID=31841272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9938790U Pending JPH0457935U (en) | 1990-09-21 | 1990-09-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0457935U (en) |
-
1990
- 1990-09-21 JP JP9938790U patent/JPH0457935U/ja active Pending
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