JPH0366231U - - Google Patents
Info
- Publication number
- JPH0366231U JPH0366231U JP12411589U JP12411589U JPH0366231U JP H0366231 U JPH0366231 U JP H0366231U JP 12411589 U JP12411589 U JP 12411589U JP 12411589 U JP12411589 U JP 12411589U JP H0366231 U JPH0366231 U JP H0366231U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- mobile communication
- communication system
- pilot
- controlled oscillator
- 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
- 238000010295 mobile communication Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Description
第１図は本考案の一実施例のブロツク図である
。
Ｅ……地球局、Ｍ……移動体、Ｓ……静止衛星
、１……高安定発振器、２……逓倍器、３……変
調器、４……アツプコンバータ、５……電力増幅
器、６……マルチプレクサ、７……送受信アンテ
ナ、８……逓倍器、９……ダウンコンバータ、１
０……復調器、１１……対地球局アンテナ、１２
……マルチプレクサ、１３……パイロツト受信機
、１４……シンセサイザ、１５……逓倍器、１６
……周波数変換器、１７……電力増幅器、１８…
…マルチプレクサ、１９……移動体通信用アンテ
ナ、２０……逓倍器、２１……周波数変換器、２
２……電力増幅器。
FIG. 1 is a block diagram of one embodiment of the present invention. E... Earth station, M... Mobile, S... Geostationary satellite, 1... High stability oscillator, 2... Multiplier, 3... Modulator, 4... Up converter, 5... Power amplifier, 6 ...Multiplexer, 7... Transmitting/receiving antenna, 8... Multiplier, 9... Down converter, 1
0...Demodulator, 11...Earth station antenna, 12
... Multiplexer, 13 ... Pilot receiver, 14 ... Synthesizer, 15 ... Multiplier, 16
...Frequency converter, 17...Power amplifier, 18...
... multiplexer, 19 ... mobile communication antenna, 20 ... multiplier, 21 ... frequency converter, 2
2...Power amplifier.
Claims (1)
球局と、前記パイロツト信号に電圧制御発振器を
位相同期させて前記パイロツト信号を位相同期受
信するパイロツト受信機及び前記電圧制御発振器
の出力を基準周波数信号とする局部発振信号発生
器を有する中継装置を備えた静止衛星とを具備し
たことを特徴とする移動体通信システム。 ２ 前記局部発振信号発生器に前記電圧制御発振
器の出力を基準周波数信号とする周波数シンセサ
イザを含むことを特徴とする請求項１記載の移動
体通信システム。 ３ 前記地球局に前記パイロツト信号を基準周波
数信号とする局部発振信号発生器を有する送受信
装置を含むことを特徴とする請求項１又は２記載
の移動体通信システム。[Claims for Utility Model Registration] 1. An earth station that transmits a stable high frequency pilot signal, a pilot receiver that receives the pilot signal in phase synchronization by synchronizing a voltage controlled oscillator with the pilot signal, and the voltage controlled oscillator. 1. A mobile communication system comprising: a geostationary satellite equipped with a relay device having a local oscillation signal generator whose output is a reference frequency signal. 2. The mobile communication system according to claim 1, wherein the local oscillation signal generator includes a frequency synthesizer that uses the output of the voltage controlled oscillator as a reference frequency signal. 3. The mobile communication system according to claim 1, wherein the earth station includes a transmitter/receiver having a local oscillation signal generator that uses the pilot signal as a reference frequency signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12411589U JPH0366231U (en) | 1989-10-23 | 1989-10-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12411589U JPH0366231U (en) | 1989-10-23 | 1989-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0366231U true JPH0366231U (en) | 1991-06-27 |
Family
ID=31672056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12411589U Pending JPH0366231U (en) | 1989-10-23 | 1989-10-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0366231U (en) |
-
1989
- 1989-10-23 JP JP12411589U patent/JPH0366231U/ja active Pending
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