JPH0316747U - - Google Patents
Info
- Publication number
- JPH0316747U JPH0316747U JP1989076207U JP7620789U JPH0316747U JP H0316747 U JPH0316747 U JP H0316747U JP 1989076207 U JP1989076207 U JP 1989076207U JP 7620789 U JP7620789 U JP 7620789U JP H0316747 U JPH0316747 U JP H0316747U
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- local oscillator
- transmitting
- output
- mixer
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Radio Relay Systems (AREA)
Description
第１図は本考案の一実施例のブロツク構成図、
第２図は従来の送受信装置のブロツク構成図であ
る。
１……送信系ローカル発振器、２……受信系ロ
ーカル発振器、３，４……ミキサ、５，６……増
幅器、７……バンドパスフイルタ、８……高電力
増幅器、９……低雑音増幅器、１０……バンドパ
スフイルタ、１１……ミキサ、１２……バンドパ
スフイルタ、１３……ミキサ、１４……バンドパ
スフイルタ、１５……ＩＦ帯スイツチ、１６……
ローカル発振器、１７……ミキサ、１８……バン
ドパスフイルタ。
FIG. 1 is a block diagram of an embodiment of the present invention.
FIG. 2 is a block diagram of a conventional transmitting/receiving device. 1...Transmission system local oscillator, 2...Reception system local oscillator, 3, 4...Mixer, 5, 6...Amplifier, 7...Band pass filter, 8...High power amplifier, 9...Low noise amplifier , 10... band pass filter, 11... mixer, 12... band pass filter, 13... mixer, 14... band pass filter, 15... IF band switch, 16...
Local oscillator, 17... mixer, 18... band pass filter.
Claims (1)
ル発振器を有する受信系と、送信系の信号を受信
系に折り返す局内折返し系とで構成される衛星通
信用送受信装置において、前記局内折返し系に前
記送信系ローカル発振器出力と送信系信号の出力
を混合するミキサと、中間周波数を選択するバン
ドパスフイルタと、信号ルートを切替える中間周
波数帯スイツチと、前記受信系ローカル発振器出
力と中間周波数を混合するミキサと、所要の周波
数を選択するバンドパスフイルタとを設け、前記
中間周波数帯スイツチは前記局内折り返し系の各
ミキサ及びフイルタを縦続接続し、或いは送信系
、受信系をそれぞれ試験用中間周波数入出力端に
切り替え接続し得るように構成したことを特徴と
する局内折返し試験回路付衛星通信用送受信装置
。 In a satellite communication transmitting/receiving device comprising a transmitting system having a local oscillator, a receiving system having another local oscillator, and an intra-station loopback system that loops back signals from the transmitting system to the receiving system, the transmitting system is included in the intra-station loopback system. a mixer that mixes the output of the local oscillator and the output of the transmission system signal; a bandpass filter that selects an intermediate frequency; an intermediate frequency band switch that switches the signal route; a mixer that mixes the output of the reception system local oscillator and the intermediate frequency; A bandpass filter for selecting a required frequency is provided, and the intermediate frequency band switch connects each mixer and filter of the local return system in cascade, or switches the transmitting system and receiving system to intermediate frequency input/output terminals for testing, respectively. 1. A transmitter/receiver for satellite communication with an intra-station loopback test circuit, characterized in that the transmitter/receiver is configured to enable connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989076207U JPH0614518Y2 (en) | 1989-06-30 | 1989-06-30 | Satellite communication transceiver with in-station loopback test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989076207U JPH0614518Y2 (en) | 1989-06-30 | 1989-06-30 | Satellite communication transceiver with in-station loopback test circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0316747U true JPH0316747U (en) | 1991-02-19 |
| JPH0614518Y2 JPH0614518Y2 (en) | 1994-04-13 |
Family
ID=31617463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989076207U Expired - Lifetime JPH0614518Y2 (en) | 1989-06-30 | 1989-06-30 | Satellite communication transceiver with in-station loopback test circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0614518Y2 (en) |
-
1989
- 1989-06-30 JP JP1989076207U patent/JPH0614518Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0614518Y2 (en) | 1994-04-13 |
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