JPH0467828U - - Google Patents
Info
- Publication number
- JPH0467828U JPH0467828U JP11093990U JP11093990U JPH0467828U JP H0467828 U JPH0467828 U JP H0467828U JP 11093990 U JP11093990 U JP 11093990U JP 11093990 U JP11093990 U JP 11093990U JP H0467828 U JPH0467828 U JP H0467828U
- Authority
- JP
- Japan
- Prior art keywords
- reception
- transmission
- switching
- communication device
- mobile communication
- 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 claims description 6
- 238000010295 mobile communication Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Transceivers (AREA)
- Mobile Radio Communication Systems (AREA)
Description
第１図は本考案の一実施例のブロツク図、第２
図および第３図は従来の通信装置の二例のブロツ
ク図である。
１……アンテナ、２……ＲＦスイツチ、３……
内蔵５０Ω抵抗（Ｒ０）、４……低雑音アンプ、
５……高出力アンプ、６……受信用ＶＣＯ、７…
…受信用ミクサ、８……送信用ＶＣＯ、９……送
信用ミクサ、１０，１１……ＩＦアンプ、１２…
…検波器、１３……変調器、１４……オーデイオ
高出力アンプ、１５……オーデイオ低雑音アンプ
、１６……スピーカ、１７……マイク、１８，１
９，２０……スイツチ回路、２１……デユープレ
クサ、２２……バンドパスフイルタ。
Fig. 1 is a block diagram of an embodiment of the present invention;
3 are block diagrams of two examples of conventional communication devices. 1...Antenna, 2...RF switch, 3...
Built-in 50Ω resistor (R 0 ), 4...Low noise amplifier,
5...High output amplifier, 6...VCO for reception, 7...
...Reception mixer, 8...Transmission VCO, 9...Transmission mixer, 10, 11...IF amplifier, 12...
...Detector, 13...Modulator, 14...Audio high output amplifier, 15...Audio low noise amplifier, 16...Speaker, 17...Microphone, 18,1
9, 20...Switch circuit, 21...Duplexer, 22...Band pass filter.
Claims (1)
制御回路により高速動作させ送信、受信のフイル
タによる分離を不要とした移動通信装置において
、前記スイツチ制御回路は、送信、受信のデユー
テイを受信信号の変調レベルにより自動的に調整
して切換を制御し、かつ前記受信信号が継続的に
入力されている期間では送信用高出力増幅器をオ
フとすることにより制御することを特徴とする移
動通信装置。 In a mobile communication device in which an RF switch for switching between transmission and reception is operated at high speed by a switch control circuit, and there is no need to separate transmission and reception by a filter, the switch control circuit automatically changes the transmission and reception duties based on the modulation level of the reception signal. 1. A mobile communication device, characterized in that the switching is controlled by adjusting the frequency, and the control is performed by turning off a high output amplifier for transmission during a period in which the received signal is continuously input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11093990U JPH0467828U (en) | 1990-10-23 | 1990-10-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11093990U JPH0467828U (en) | 1990-10-23 | 1990-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0467828U true JPH0467828U (en) | 1992-06-16 |
Family
ID=31858346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11093990U Pending JPH0467828U (en) | 1990-10-23 | 1990-10-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0467828U (en) |
-
1990
- 1990-10-23 JP JP11093990U patent/JPH0467828U/ja active Pending
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