JPH02131035A - Repeater for satellite-mounted communication - Google Patents
Repeater for satellite-mounted communicationInfo
- Publication number
- JPH02131035A JPH02131035A JP28500988A JP28500988A JPH02131035A JP H02131035 A JPH02131035 A JP H02131035A JP 28500988 A JP28500988 A JP 28500988A JP 28500988 A JP28500988 A JP 28500988A JP H02131035 A JPH02131035 A JP H02131035A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- channel
- reception
- horns
- feeding
- 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
- 230000005540 biological transmission Effects 0.000 abstract description 25
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は衛星搭載通信用中継器に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to a communication repeater mounted on a satellite.
近年、衛星通信の対象は、企業内通信や放送衛星に見ら
れるように個々の企業や家庭に移りつつある。このよう
な企業あるいは家庭では、従来の地球局に見られるよう
な大型のアンテナを設置することは難しいので、衛星に
搭載される通信用中継器には大出力電力が要求されるこ
とになる。限られた電力容量しか得られない衛星にとっ
て大出力電力を得るには、中継器の送信系の電力増幅器
をも含めた効率の向上しかない“。In recent years, the target of satellite communications has been shifting to individual companies and households, as seen in corporate communications and broadcasting satellites. Since it is difficult for such businesses or households to install large antennas like those found in conventional earth stations, communication repeaters mounted on satellites are required to have high output power. For satellites that have limited power capacity, the only way to obtain large output power is to improve the efficiency of the repeater transmission system, including the power amplifier.
第２図は従来の衛星搭載通信用中継器の一例を示すブロ
ック図である。FIG. 2 is a block diagram showing an example of a conventional satellite-mounted communication repeater.
第２図において、地球局からの微弱な受信信号はアンテ
ナ系６のリフレクタ６１．給電ホーン６２と送受分波器
７を通して受信機２に達する。受信信号は受信機２によ
り増幅及び周波数変換される。変換された送信信号はチ
ャネル分波器３により（Ｎ、−１）個の帯域に分割され
、それぞれの信号は（Ｎ−１＞個の電力増幅器４２〜４
Ｎによって増幅され、チャネル合波器５によって合波さ
れる。この送信信号は送受分波器７を通して給電ホーン
６２．リフレクタ６１からなるアンテナ系６で地球局に
向けて送出される。In FIG. 2, a weak received signal from the earth station is transmitted to the reflector 61 of the antenna system 6. It reaches the receiver 2 through the feeding horn 62 and the transmission/reception duplexer 7. The received signal is amplified and frequency converted by the receiver 2. The converted transmission signal is divided into (N, -1) bands by the channel demultiplexer 3, and each signal is divided into (N-1>> power amplifiers 42 to 4).
The signal is amplified by N, and multiplexed by channel multiplexer 5. This transmission signal is passed through the transmission/reception duplexer 7 to the power supply horn 62. The signal is transmitted toward the earth station through an antenna system 6 consisting of a reflector 61.
上述した従来の衛星搭載通信用中継器においては、送信
信号は電力増幅器４２〜４Ｎによって増幅されるが、そ
の後に続くチャネル合波器５．送受分波器７及びアンテ
ナ系６の挿入損失によって減衰を受けるので、出力電力
が下るという欠点がある。In the conventional satellite communication repeater described above, the transmitted signal is amplified by the power amplifiers 42 to 4N, and the subsequent channel multiplexer 5. Since it is attenuated by the insertion loss of the transmission/reception duplexer 7 and the antenna system 6, there is a drawback that the output power decreases.
本発明の目的は、アンテナ系の給電ホーンを受。The object of the present invention is to provide a feeding horn for an antenna system.
信用と送信用に分け、また送信用給電ホーンは各チャネ
ル毎に分けることにより、送受分波器及びチャネル金波
器をなくし、送信系の挿入損失を少なくした衛星搭載通
信用中継器を提供することにある。To provide a satellite-mounted communication repeater that eliminates a transmission/reception duplexer and a channel frequency divider and reduces insertion loss in a transmission system by separating the transmission and transmission power horns and by separating the transmission power supply horn for each channel. It is in.
本発明の衛星搭載通信用中継器は、１個のリフレクタと
Ｎ個（Ｎ≧３）の給電ホーンとからなるアンテナ系と、
第１の前記給電ホーンによる受信信号を増幅して周波数
変換する受信機と、この受信機の出力を（Ｎ−１）個の
帯域に分割するチャネル分波器と、このチャネル分波器
の出力信号をそれぞれ増幅する（Ｎ−１）個の電力増幅
器とを備え、前記各電力増幅器の出力を第２．〜第Ｎの
前記給電ホーンに接続してなることを特徴とする。The satellite-mounted communication repeater of the present invention includes an antenna system including one reflector and N (N≧3) feeding horns;
a receiver that amplifies and frequency converts the signal received by the first feeding horn; a channel splitter that divides the output of the receiver into (N-1) bands; and an output of the channel splitter. (N-1) power amplifiers each amplifying a signal, and the output of each power amplifier is transmitted to a second . to the Nth power supply horn.
次に、本発明について第１図を参照して説明する。 Next, the present invention will be explained with reference to FIG.
第１図は本発明の衛星搭載通信用中継器の一実施例を示
すブロック図である。FIG. 1 is a block diagram showing an embodiment of a satellite-mounted communication repeater according to the present invention.
第１図において、本実施例はリフレクタ１１と受信用給
電ホーン１２及び送信用給電ホーン１３２、〜１３Ｎと
からなるアンテナ系１と、受信用給電ホーン１２と接続
された受信機２と、受信機２の出力を帯域分割して電力
増幅器４２．〜４Ｎに入力するチャネル分波器３とを備
え、電力増幅器４２．〜４Ｎの出力をそれぞれ送信用給
電ホーン１３２．〜１３Ｎに接続してなる。In FIG. 1, the present embodiment includes an antenna system 1 consisting of a reflector 11, a receiving feeding horn 12, and a transmitting feeding horn 132 to 13N, a receiver 2 connected to the receiving feeding horn 12, and a receiver. The output of power amplifier 42.2 is band-divided. 4N, and a power amplifier 42. ~4N output to the transmitting power supply horn 132. ~13N is connected.
続いて本実施例の動作について説明する。Next, the operation of this embodiment will be explained.
地球局からの受信信号はリフレクタ１１で反射され、受
信用給電ホーン１２に集められた後、受信機２に達する
。受信機２により増幅及び周波数変換された送信信号は
チャネル分波器３により（Ｎ−１）個の周波数帯に細か
く分割され、それぞれの信号は電力増幅器４２．〜４Ｎ
によって増幅される。増幅されたそれぞれの信号は送信
用給電ホーン１３２．〜１３Ｎを通して放射され、リフ
レクタ１１によって地球局に向けて送出される。A received signal from the earth station is reflected by a reflector 11 and collected by a reception feeding horn 12 before reaching the receiver 2. The transmission signal amplified and frequency-converted by the receiver 2 is finely divided into (N-1) frequency bands by the channel demultiplexer 3, and each signal is sent to a power amplifier 42. ~4N
is amplified by Each amplified signal is sent to a transmission power supply horn 132. ˜13N and transmitted by reflector 11 towards the earth station.
以上かられかるように、本実施例では第２図の従来例の
ような送受分波器７及びチャネル分波器５を具備する必
要はないので、これによる出力電力の低下をなくすこと
ができる。即ち衛星からの送信出力電力を増加させるこ
とができる。As can be seen from the above, in this embodiment, there is no need to provide the transmitting/receiving duplexer 7 and the channel duplexer 5 as in the conventional example shown in FIG. . That is, the transmission output power from the satellite can be increased.
以上説明したように本発明は、アンテナの給電ホーンを
受信用と送信用に分け、また送信用は各チャネル毎に分
けることにより、送受分波器及びチャネル合波器をなく
すことができるので、通信用中継器の機能を損うことな
く送信系の効率の向上、即ち出力の増加を図ることが可
能となる効果がある。As explained above, the present invention makes it possible to eliminate the transmitting/receiving splitter and channel multiplexer by dividing the feeding horn of the antenna into receiving and transmitting horns, and dividing the transmitting horn for each channel. This has the effect of making it possible to improve the efficiency of the transmission system, that is, increase the output, without impairing the function of the communication repeater.
第１図は本発明の衛星搭載通信用中継器の一実施例を示
すブロック図、第２図は従来の衛星搭載通信用中継器の
一例を示すブロック図である。
１．６・・・アンテナ系、１１．６１・・・リフレクタ
、１２・・・受信用給電ホーン、１３２〜１３Ｎ・・・
送信用給電ホーン、２・・・受信機、３・・・チャネル
分波器、４２〜４Ｎ・・・電力増幅器、５・・・チャネ
ル合波器、６２・・・給電ホーン、７・・・送受分波器
。FIG. 1 is a block diagram showing an embodiment of a satellite-mounted communication repeater according to the present invention, and FIG. 2 is a block diagram showing an example of a conventional satellite-mounted communication repeater. 1.6...Antenna system, 11.61...Reflector, 12...Receiving power supply horn, 132-13N...
Transmission power feeding horn, 2... Receiver, 3... Channel branching filter, 42-4N... Power amplifier, 5... Channel multiplexer, 62... Feeding horn, 7... Transmission/reception duplexer.
Claims (1)
なるアンテナ系と、第１の前記給電ホーンによる受信信
号を増幅して周波数変換する受信機と、この受信機の出
力を（Ｎ−１）個の帯域に分割するチャネル分波器と、
このチャネル分波器の出力信号をそれぞれ増幅する（Ｎ
−１）個の電力増幅器とを備え、前記各電力増幅器の出
力を第２、〜第Ｎの前記給電ホーンに接続してなること
を特徴とする衛星搭載通信用中継器。An antenna system consisting of one reflector and N feeding horns (N≧3), a receiver that amplifies and frequency converts the signal received by the first feeding horn, and converts the output of this receiver into (N -1) a channel demultiplexer that divides into bands;
The output signals of this channel splitter are each amplified (N
-1) power amplifiers, and the output of each of the power amplifiers is connected to the second to Nth power feeding horns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28500988A JPH02131035A (en) | 1988-11-10 | 1988-11-10 | Repeater for satellite-mounted communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28500988A JPH02131035A (en) | 1988-11-10 | 1988-11-10 | Repeater for satellite-mounted communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02131035A true JPH02131035A (en) | 1990-05-18 |
Family
ID=17685970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28500988A Pending JPH02131035A (en) | 1988-11-10 | 1988-11-10 | Repeater for satellite-mounted communication |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02131035A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998054852A1 (en) * | 1997-05-30 | 1998-12-03 | Kabushiki Kaisha Toshiba | Satellite broadcasting system and broadcasting satellite |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6072337A (en) * | 1983-09-28 | 1985-04-24 | Kokusai Denshin Denwa Co Ltd <Kdd> | On-satellite repeator |
| JPS6349809B2 (en) * | 1982-02-18 | 1988-10-05 | Nippon Electric Co |
-
1988
- 1988-11-10 JP JP28500988A patent/JPH02131035A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6349809B2 (en) * | 1982-02-18 | 1988-10-05 | Nippon Electric Co | |
| JPS6072337A (en) * | 1983-09-28 | 1985-04-24 | Kokusai Denshin Denwa Co Ltd <Kdd> | On-satellite repeator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998054852A1 (en) * | 1997-05-30 | 1998-12-03 | Kabushiki Kaisha Toshiba | Satellite broadcasting system and broadcasting satellite |
| AU720781B2 (en) * | 1997-05-30 | 2000-06-15 | Kabushiki Kaisha Toshiba | Satellite broadcasting system and broadcasting satellite |
| US6501938B1 (en) | 1997-05-30 | 2002-12-31 | Kabushiki Kaisha Toshiba | Satellite broadcasting system and broadcasting satellite |
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