JPH0348943U - - Google Patents
Info
- Publication number
- JPH0348943U JPH0348943U JP1989110240U JP11024089U JPH0348943U JP H0348943 U JPH0348943 U JP H0348943U JP 1989110240 U JP1989110240 U JP 1989110240U JP 11024089 U JP11024089 U JP 11024089U JP H0348943 U JPH0348943 U JP H0348943U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- level
- detection circuit
- received signal
- high frequency
- 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
- 238000001514 detection method Methods 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Transceivers (AREA)
- Mobile Radio Communication Systems (AREA)
Description
第１図は本考案の一実施例を示す図、第２図は
アンテナの構成例を示す図、第３図は従来例を示
す図である。
１３……雑音検出回路、２０，２１……アンテ
ナ、２４……第１レベル制御回路、２６……レベ
ル検出回路、３０……ＡＮＤゲード（制御回路）
、３１……第２レベル制御回路。
FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of the structure of an antenna, and FIG. 3 is a diagram showing a conventional example. 13 ...Noise detection circuit, 20, 21...Antenna, 24...First level control circuit, 26 ...Level detection circuit, 30...AND gate (control circuit)
, 31...second level control circuit.
Claims (1)
無線回線を介して接続された移動局とよりなる無
線電話装置であつて、前記移動局が、異なる指向
性を有する複数のアンテナと、このアンテナから
の高周波数信号を受信・検波する受信系と、受信
信号の高域に含まれる雑音成分を検出する雑音検
出回路と、受信信号のレベルを検出するレベル検
出回路と、前記雑音検出回路からの検出信号に応
じて受信信号の高域信号レベルを減衰する第１レ
ベル制御回路と、前記雑音検出回路からの検出信
号とレベル検出回路からの検出信号とに基づき前
記アンテナを切換える制御信号を出力する制御回
路と、この制御回路からの制御信号に応じて能動
状態に設定され、雑音検出回路の検出信号に応じ
て受信信号のレベルを減衰する第２レベル制御回
路とを具備していることを特徴とする無線電話装
置。 A wireless telephone device comprising a base station connected to a telephone line and a mobile station connected to the base station via a wireless line, wherein the mobile station has a plurality of antennas having different directivity, and a mobile station connected to the base station via a wireless line. a receiving system that receives and detects a high frequency signal from an antenna; a noise detection circuit that detects noise components included in the high frequency range of the received signal; a level detection circuit that detects the level of the received signal; a first level control circuit that attenuates the high frequency signal level of the received signal according to the detection signal of the noise detection circuit; and outputs a control signal that switches the antenna based on the detection signal from the noise detection circuit and the detection signal from the level detection circuit. and a second level control circuit that is set to an active state in response to a control signal from the control circuit and that attenuates the level of the received signal in response to a detection signal of the noise detection circuit. A wireless telephone device with features.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989110240U JP2507735Y2 (en) | 1989-09-19 | 1989-09-19 | Wireless telephone equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989110240U JP2507735Y2 (en) | 1989-09-19 | 1989-09-19 | Wireless telephone equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0348943U true JPH0348943U (en) | 1991-05-13 |
| JP2507735Y2 JP2507735Y2 (en) | 1996-08-21 |
Family
ID=31658788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989110240U Expired - Lifetime JP2507735Y2 (en) | 1989-09-19 | 1989-09-19 | Wireless telephone equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2507735Y2 (en) |
-
1989
- 1989-09-19 JP JP1989110240U patent/JP2507735Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2507735Y2 (en) | 1996-08-21 |
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