JPH02113705A - Antenna - Google Patents
AntennaInfo
- Publication number
- JPH02113705A JPH02113705A JP26859488A JP26859488A JPH02113705A JP H02113705 A JPH02113705 A JP H02113705A JP 26859488 A JP26859488 A JP 26859488A JP 26859488 A JP26859488 A JP 26859488A JP H02113705 A JPH02113705 A JP H02113705A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- length
- motor
- controller
- wavelength
- 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
Landscapes
- Details Of Aerials (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電波受信機に関し、特にアンテナに関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a radio wave receiver, and particularly to an antenna.
従来、この種のアンテナでは、固定長のアンテナを用い
ていたため受信電波の波長に応じたアンテナの長さの調
整は行われていなかった。Conventionally, this type of antenna has used a fixed-length antenna, so the length of the antenna has not been adjusted according to the wavelength of the received radio waves.
上述した従来のアンテナは、受信電波の波長に応じてア
ンテナの長さの調整を行っていないため、最大の感度で
の受信ができないという欠点があった。The above-mentioned conventional antenna had the disadvantage that it could not receive with maximum sensitivity because the length of the antenna was not adjusted according to the wavelength of the received radio wave.
本発明のアンテナは、アンテナの長さを調整するための
モータとモータを制御するためのコントローラを有して
いる。The antenna of the present invention has a motor for adjusting the length of the antenna and a controller for controlling the motor.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例のブロック図である。FIG. 1 is a block diagram of one embodiment of the present invention.
コントローラ３は、キー４より入力された選局のデータ
を受は取り、その局の周波数から波長を求め、最大の感
度が得られる波長のＡあるいはＡの長さを計算する。モ
ータ制御回路５は、コントローラ３で計算した長さにア
ンテナ１を調整するためにモータ２の回転する角度を決
定する。The controller 3 receives and receives channel selection data inputted from the key 4, determines the wavelength from the frequency of that station, and calculates the wavelength A or the length of A that provides the maximum sensitivity. The motor control circuit 5 determines the rotation angle of the motor 2 in order to adjust the antenna 1 to the length calculated by the controller 3.
第２図は本発明の実施例２のブロック図である。FIG. 2 is a block diagram of a second embodiment of the present invention.
アンテナ１で受信した信号を周波数変換回路６で中間周
波数に変換し中間周波増幅回路７で増幅する。シグナル
メータ８でＳ／Ｎ比を検出しそのレベルをコントローラ
３に送る。コントローラ３は、Ｓ／Ｎ比が最高になるよ
うにモータ制御回路５へ信号を送る。モータ制御回路５
は、コントローラ３からの信号を受はモータ２を制御し
、アンテナ１を調整する。A signal received by the antenna 1 is converted to an intermediate frequency by a frequency conversion circuit 6 and amplified by an intermediate frequency amplification circuit 7. The signal meter 8 detects the S/N ratio and sends the level to the controller 3. The controller 3 sends a signal to the motor control circuit 5 so that the S/N ratio is maximized. Motor control circuit 5
receives the signal from the controller 3, controls the motor 2, and adjusts the antenna 1.
この実施例では、実施例１に比較し、更に高いＳ／Ｎ比
で受信できるという利点がある。This embodiment has the advantage of being able to receive signals with a higher S/N ratio than the first embodiment.
以上説明したように本発明は、受信電波に応じてアンテ
ナの長さを調整することにより、最大の感度で受信でき
る効果がある。As explained above, the present invention has the effect of being able to receive radio waves with maximum sensitivity by adjusting the length of the antenna according to the received radio waves.
また、アンテナの長さを調整することにより受信できる
周波数帯域が広がるという効果がある。Furthermore, adjusting the length of the antenna has the effect of widening the frequency band that can be received.
第１図は本発明の実施例１のブロック図、第２図は実施
例２のブロック図である。
１・・・・・・アンテナ、２・・・・・・モータ、３・
・・・・・コントローラ、４・・・・・・キー ５・・
・・・・モータ制御回路、６・・・・・・周波数変換回
路、７・・・・・・中間周波増幅回路、８・・・シグナ
ルメータ。
代理人 弁理士 内 原 晋
髪
図FIG. 1 is a block diagram of a first embodiment of the present invention, and FIG. 2 is a block diagram of a second embodiment. 1...Antenna, 2...Motor, 3.
...Controller, 4...Key 5...
... Motor control circuit, 6 ... Frequency conversion circuit, 7 ... Intermediate frequency amplification circuit, 8 ... Signal meter. Agent Patent Attorney Susumu Uchihara
Claims (1)
能を有することを特徴とするアンテナ。An antenna characterized by having a function of adjusting the length of the antenna according to the frequency to be received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26859488A JPH02113705A (en) | 1988-10-24 | 1988-10-24 | Antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26859488A JPH02113705A (en) | 1988-10-24 | 1988-10-24 | Antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02113705A true JPH02113705A (en) | 1990-04-25 |
Family
ID=17460702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26859488A Pending JPH02113705A (en) | 1988-10-24 | 1988-10-24 | Antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02113705A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07235817A (en) * | 1993-12-28 | 1995-09-05 | Nec Corp | Telescopic antenna for ic memory card radio modem |
| WO2000065685A1 (en) * | 1999-04-27 | 2000-11-02 | Siemens Aktiengesellschaft | Mobile radio transmitting-receiving device comprising a tunable antenna |
| JP2002204178A (en) * | 2000-12-28 | 2002-07-19 | Toshiba Corp | Wireless communication device and information processing device |
-
1988
- 1988-10-24 JP JP26859488A patent/JPH02113705A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07235817A (en) * | 1993-12-28 | 1995-09-05 | Nec Corp | Telescopic antenna for ic memory card radio modem |
| WO2000065685A1 (en) * | 1999-04-27 | 2000-11-02 | Siemens Aktiengesellschaft | Mobile radio transmitting-receiving device comprising a tunable antenna |
| JP2002204178A (en) * | 2000-12-28 | 2002-07-19 | Toshiba Corp | Wireless communication device and information processing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2189505A1 (en) | Method for Controlling a Diversity Receiver Apparatus in a Radio Subscriber Unit | |
| CA2072972A1 (en) | Method of controlling output power in a mobile radio communication system | |
| CA2158577A1 (en) | Reverse Link, Transmit Power Correction and Limitation in a Radiotelephone System | |
| SE9903967L (en) | Power control for wireless communication systems | |
| CA2266810A1 (en) | Method of controlling transmission power in cellular system and base station apparatus | |
| WO1998057442A3 (en) | An arrangement and a method relating to a radio unit | |
| CA2071556A1 (en) | Tdma transceiver controller method and apparatus | |
| CA2339222A1 (en) | An antenna device | |
| RU97113090A (en) | DEVICE AND METHOD FOR TRACKING POWER TRANSMISSION USING WORK LOAD MESSAGE | |
| JPH02113705A (en) | Antenna | |
| EP0632609A2 (en) | A method and apparatus for averting electromagnetic interference | |
| CA2072235A1 (en) | Radio pager with variable gain setting controlled according to presence and absence of sync codes | |
| CA2003207A1 (en) | Relay receiver | |
| CA2290406A1 (en) | Base station (apparatus and method) with directivity and transmission power control | |
| JP3071582B2 (en) | Adjustment method of power amplification efficiency | |
| JP3198894B2 (en) | Mobile radio | |
| JPH02302129A (en) | Video receiver | |
| JPH044782B2 (en) | ||
| JP2581171Y2 (en) | Wireless communication equipment | |
| JPH10190504A (en) | Antenna direction adjustment control system | |
| JP2780485B2 (en) | Automatic gain control method | |
| JPH0265532A (en) | Millimeter wave communication system | |
| JPH02303230A (en) | Ratio communication system | |
| JP2555131Y2 (en) | Squelch equipment | |
| JPS63314030A (en) | Radio equipment |