JPH0722830A - Antenna system - Google Patents

Antenna system

Info

Publication number
JPH0722830A
JPH0722830A JP18317693A JP18317693A JPH0722830A JP H0722830 A JPH0722830 A JP H0722830A JP 18317693 A JP18317693 A JP 18317693A JP 18317693 A JP18317693 A JP 18317693A JP H0722830 A JPH0722830 A JP H0722830A
Authority
JP
Japan
Prior art keywords
antenna
helical
directivity
reception
scale
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
Application number
JP18317693A
Other languages
Japanese (ja)
Other versions
JP2500464B2 (en
Inventor
Naonobu Yamamoto
直信 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP5183176A priority Critical patent/JP2500464B2/en
Priority to US08/269,053 priority patent/US5477232A/en
Priority to EP94110127A priority patent/EP0632603B1/en
Priority to DE69421009T priority patent/DE69421009T2/en
Priority to CA002127079A priority patent/CA2127079C/en
Priority to AU66060/94A priority patent/AU680497B2/en
Publication of JPH0722830A publication Critical patent/JPH0722830A/en
Application granted granted Critical
Publication of JP2500464B2 publication Critical patent/JP2500464B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To set an antenna for transmission and that for reception to optimum directivities with an easy operation with respect to the communication equipment which uses frequencies for transmission and reception and uses individual antennas for transmission and reception. CONSTITUTION:An antenna 10 for transmission and an antenna 20 for reception which use different frequencies consist of helical antennas 31, and the helical pitch and the helical length of each antenna are changed by a rotating operation part 33 to adjust the directivity of the antenna. This rotating operation part 33 is provided with a measure 34 which indicates the extent of change of the directivity. The reception state is monitored to set the directivity of the antenna 20 for reception so that an optimum reception state is obtained, and the value on the measure 34 of the antenna 10 for transmission is equalized to that on the measure 34 of the antenna 20 for reception at this time, thereby setting the directivity of the antenna 10 for transmission to the optimum state.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は送信と受信とを異なる周
波数を用いて通信を行うためのアンテナ装置に関し、特
に送信用アンテナと受信用アンテナの指向性を最適に設
定することを可能にしたアンテナ装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna device for performing transmission and reception using different frequencies, and in particular makes it possible to optimally set the directivity of a transmission antenna and a reception antenna. The present invention relates to an antenna device.

【0002】[0002]

【従来の技術】送信と受信とを異なる周波数を用いて通
信を行う装置では、送信用アンテナと受信用アンテナと
を個別に設けている。例えば、MSATのように、送信
周波数1.6GHz帯と、受信周波数1.5GHz帯と
の間に100MHzもの差がある通信を行う場合には、
アンテナを送受信で共用することが難しいため、それぞ
れ独立したアンテナが必要とされる。そして、各々独立
したアンテナを用いた場合には、各アンテナを最適な指
向性に設定すること、即ち、送受の各アンテナの指向性
を一致させることが好ましい。例えば、図3に示す、M
SATの通信装置では、送信用アンテナ10と受信用ア
ンテナ20にそれぞれヘリカルアンテナ装置を用いてい
る。このヘリカルアンテナ装置は、導体線を螺旋状に形
成したヘリカルアンテナ導体(以下、単にヘリカルアン
テナと称する)31を誘電体筒30に収納したものであ
る。そして、この誘電体筒30の一部に設けた回転操作
部33を本体部32に対して回転操作できるようにして
おき、ヘリカルアンテナ31の下端部を本体部32に支
持させ、上端部を回転操作部33に連結させている。
2. Description of the Related Art In an apparatus for performing transmission and reception using different frequencies, a transmission antenna and a reception antenna are separately provided. For example, when performing communication such as MSAT where there is a difference of 100 MHz between the transmission frequency of 1.6 GHz band and the reception frequency of 1.5 GHz band,
Since it is difficult to share the antennas for transmission and reception, independent antennas are required. When independent antennas are used, it is preferable to set each antenna to have an optimum directivity, that is, to make the directivity of each antenna for transmission and reception match. For example, as shown in FIG.
In the SAT communication device, helical antenna devices are used for the transmitting antenna 10 and the receiving antenna 20, respectively. In this helical antenna device, a helical antenna conductor (hereinafter, simply referred to as a helical antenna) 31 in which a conductor wire is formed in a spiral shape is housed in a dielectric cylinder 30. Then, the rotation operation portion 33 provided in a part of the dielectric cylinder 30 is made to be rotatable with respect to the main body portion 32, the lower end portion of the helical antenna 31 is supported by the main body portion 32, and the upper end portion is rotated. It is connected to the operation unit 33.

【0003】したがって、この回転操作部33を回転操
作することにより、ヘリカルアンテナ31に回転力を加
えてこれを捩り変形させ、図4に模式的に示すように、
ヘリカルアンテナ31のヘリカルピッチSとヘリカル長
Lを変化させることができる。周知のように、ヘリカル
アンテナはヘリカルピッチとヘリカル長によって指向
性、特に仰角指向性が変化されるため、回転操作部33
の操作によってその指向性を変化調整することができ
る。したがって、送信用アンテナ10及び受信用アンテ
ナ20のそれぞれを最適な指向性となるように調整する
ことが可能となる。
Therefore, by rotationally operating the rotary operating portion 33, a rotational force is applied to the helical antenna 31 so that it is twisted and deformed, and as shown schematically in FIG.
The helical pitch S and the helical length L of the helical antenna 31 can be changed. As is well known, since the directivity, especially the elevation directivity of the helical antenna is changed by the helical pitch and the helical length, the rotary operation unit 33
The directivity can be changed and adjusted by the operation of. Therefore, it is possible to adjust each of the transmitting antenna 10 and the receiving antenna 20 so as to have the optimum directivity.

【0004】[0004]

【発明が解決しようとする課題】ところで、このような
送信及び受信に個別のアンテナを用いた通信装置が、例
えば、図3に示したようなMSATの通信局の場合、受
信用アンテナ20の指向性は通信装置1における受信状
態を監視し、受信状態が最良な状態となるようにするこ
とで設定することができる。しかしながら、送信用アン
テナ10の指向性は衛星2での受信状態をみなければな
らず、そのためには衛星2からの折り返し信号を受信す
る等、間接的な方法によらざるを得ず、送信用アンテナ
10の指向性の最適な設定が難しいと共に、その設定操
作が極めて面倒なものになるという問題がある。本発明
の目的は、送信用アンテナ及び受信用アンテナを簡単な
操作で最適指向性に設定することが可能なアンテナ装置
を提供することにある。
By the way, when the communication device using separate antennas for transmission and reception is, for example, a communication station of MSAT as shown in FIG. 3, the direction of the reception antenna 20 is changed. The sex can be set by monitoring the reception state in the communication device 1 and making the reception state the best state. However, the directivity of the transmitting antenna 10 must be determined by the reception state of the satellite 2, and for that purpose, there is no choice but to use an indirect method such as receiving a return signal from the satellite 2 for transmitting. There is a problem that it is difficult to optimally set the directivity of the antenna 10 and the setting operation becomes extremely troublesome. An object of the present invention is to provide an antenna device capable of setting the transmitting antenna and the receiving antenna to the optimum directivity with a simple operation.

【0005】[0005]

【課題を解決するための手段】本発明のアンテナ装置
は、異なる周波数を使用する送信用アンテナと受信用ア
ンテナのそれぞれに指向性の変化量を示す目盛りを設
け、最適な受信状態に設定される受信用アンテナの目盛
りに送信用アンテナの目盛りを一致させることができる
ように構成する。例えば、送信用アンテナと受信用アン
テナをそれぞれヘリカルアンテナで構成し、各ヘリカル
アンテナのヘリカルピッチとヘリカル長を調整可能と
し、かつ各アンテナにはその指向性の変化量に対応する
調整量の目盛りを設け、送信用及び受信用の各アンテナ
の対応する目盛りには対応する記号を付した構成とす
る。ヘリカルアンテナは、アンテナを収納する誘電体筒
を軸方向に分割して本体部と回転操作部を構成し、ヘリ
カルアンテナの一端部を本体部に支持させ、他端部を回
転操作部に支持させ、回転操作部を回転操作することで
ヘリカルアンテナを捩り変形してヘリカルピッチとヘリ
カル長を変化させ、その変化に対応する回転操作部の回
転量を示す目盛りを付した構成とする。
In the antenna device of the present invention, the transmitting antenna and the receiving antenna, which use different frequencies, are provided with graduations indicating the amount of change in the directivity, and are set to an optimum receiving state. It is configured so that the scale of the transmitting antenna can be matched with the scale of the receiving antenna. For example, each of the transmitting antenna and the receiving antenna is composed of a helical antenna, the helical pitch and the helical length of each helical antenna can be adjusted, and each antenna has a scale of an adjustment amount corresponding to the amount of change in its directivity. The corresponding scales of the transmitting and receiving antennas are provided with corresponding symbols. In the helical antenna, a dielectric cylinder that houses the antenna is divided in the axial direction to form a main body and a rotation operation unit, one end of the helical antenna is supported by the main body, and the other end is supported by the rotation operation unit. The helical antenna is twisted and deformed by rotating the rotating operation unit to change the helical pitch and the helical length, and a scale indicating a rotation amount of the rotating operation unit corresponding to the change is provided.

【0006】[0006]

【実施例】次に、本発明について図面を参照して説明す
る。図1は本発明をMSAT通信局に設備した一実施例
の概念図である。送受信可能な通信装置1は送信周波数
と受信周波数が異なっており、送信用アンテナ10と受
信用アンテナ20が個別に設けられ、衛星2との間で通
信を送受するようになっている。前記送信用アンテナ1
0と受信用アンテナ20はいずれもヘリカルアンテナ装
置で構成されている。図2はこれらヘリカルアンテナ装
置の構造の一例を示しており、垂直に向けられた細長い
誘電体筒30の内部に導体線を螺旋状に形成したヘリカ
ルアンテナ31が内装されている。前記誘電体筒30は
その軸方向に分割して本体部32と回転操作部33とで
構成されており、回転操作部33を本体部32に対して
軸回り方向に回転操作できるように構成している。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram of an embodiment in which the present invention is installed in an MSAT communication station. The communication device 1 capable of transmission / reception has a different transmission frequency and reception frequency, a transmission antenna 10 and a reception antenna 20 are separately provided, and communication is performed with the satellite 2. The transmitting antenna 1
0 and the receiving antenna 20 are both configured by a helical antenna device. FIG. 2 shows an example of the structure of these helical antenna devices. A helical antenna 31 in which a conductor wire is formed in a spiral shape is provided inside a vertically elongated elongated dielectric tube 30. The dielectric cylinder 30 is divided into an axial direction and is composed of a main body portion 32 and a rotation operation portion 33. The rotation operation portion 33 is configured to be rotatable about the main body portion 32 in the axial direction. ing.

【0007】この実施例では、回転操作部33の内面に
設けた突起33aを、本体部32に設けた円周方向に延
びるL字溝32aに嵌合させることで、回転操作部33
を本体部32に対して所要の角度で回転操作できるよう
に構成する。更に、ヘリカルアンテナ31はその下端部
が本体部32に支持され、上端部が回転操作部33に連
結支持され、回転操作部33が回転操作されたときに
は、その回転力がヘリカルアンテナ31に伝えられてヘ
リカルアンテナ31が捩じられ、そのヘリカルピッチS
とヘリカル長Lが変化されるように構成されている。
In this embodiment, the protrusion 33a provided on the inner surface of the rotary operation portion 33 is fitted into the L-shaped groove 32a extending in the circumferential direction provided on the main body portion 32, whereby the rotary operation portion 33 is formed.
Is configured to be rotatable with respect to the main body portion 32 at a required angle. Further, the lower end portion of the helical antenna 31 is supported by the main body portion 32, the upper end portion is connected and supported by the rotation operation portion 33, and when the rotation operation portion 33 is rotationally operated, the rotational force is transmitted to the helical antenna 31. The helical antenna 31 is twisted, and its helical pitch S
And the helical length L is changed.

【0008】したがって、この回転操作部33を所要角
度回転させることで、ヘリカルピッチSとヘリカル長L
が変化され、ヘリカルアンテナの指向性、ここでは衛星
2に対する仰角αを変化調整することができる。この場
合、前記回転操作部33の周面には、本体部に対する回
転角度を表示するための目盛34りと記号35が付され
ている。また、本体部32の対応する周面位置には指標
36が付されている。即ち、回転操作部33の回転角度
に応じてヘリカルアンテナ31のヘリカルピッチSとヘ
リカル長Lが変化され、これら長さの変化により指向性
が相違させられるため、指標36と目盛り34及び記号
35を参照することで、指向性の変化量を回転操作部3
3の回転角度として得ることができ、したがって目盛り
34に対する記号35を適切に決めておけば、回転操作
部33の回転角度によってヘリカルアンテナの指向性を
表示させることができる。
Therefore, by rotating the rotary operation portion 33 by a required angle, the helical pitch S and the helical length L are increased.
Can be changed to adjust the directivity of the helical antenna, here the elevation angle α with respect to the satellite 2. In this case, a scale 34 and a symbol 35 for displaying the rotation angle with respect to the main body are attached to the peripheral surface of the rotation operation part 33. An index 36 is attached to the corresponding peripheral surface position of the main body 32. That is, the helical pitch S and the helical length L of the helical antenna 31 are changed according to the rotation angle of the rotary operation unit 33, and the directivity is made different by the change of these lengths, so that the index 36, the scale 34, and the symbol 35 are changed. By referring to the change amount of directivity, the rotation operation unit 3
3 can be obtained. Therefore, if the symbol 35 with respect to the scale 34 is appropriately determined, the directivity of the helical antenna can be displayed according to the rotation angle of the rotation operation unit 33.

【0009】ここで、送信用アンテナ10と受信用アン
テナ20とは、使用される周波数に応じてそれぞれのヘ
リカルアンテナ31のヘリカルピッチS、ヘリカル長L
が相違した構成とされている。このように、各ヘリカル
アンテナの周波数が異なると、そのヘリカルピッチとヘ
リカル長も異なるため、前記したように回転操作部33
の回転角度とこれに対応したヘリカルピッチ及びヘリカ
ル長の変化による指向性の変化も相違されることにな
り、回転操作部33に設ける目盛り34の間隔も自ずか
ら相違されることになる。したがって、送信用アンテナ
10と受信用アンテナ20の各回転操作部には、それぞ
れ異なる間隔の独自の目盛りが付されることになる。但
し、各アンテナの指向性の変化量を示す記号は、それぞ
れの対応する目盛り34には同じ記号35を対応して記
載している。
Here, the transmitting antenna 10 and the receiving antenna 20 have a helical pitch S and a helical length L of the respective helical antennas 31 depending on the frequencies used.
Are configured differently. As described above, when the frequency of each helical antenna is different, the helical pitch and the helical length are also different.
Changes in directivity due to changes in the rotation angle and the corresponding helical pitch and helical length, and the intervals between the scales 34 provided on the rotary operation unit 33 also naturally change. Therefore, the rotating antennas of the transmitting antenna 10 and the receiving antenna 20 are provided with their own scales at different intervals. However, as for the symbol indicating the amount of change in the directivity of each antenna, the same symbol 35 is described correspondingly on each corresponding scale 34.

【0010】したがって、この通信局においては、先ず
衛星2からの信号を受信用アンテナ20及び通信装置1
で受信し、受信状態が最良となるように受信用アンテナ
20の回転操作部33を回転操作し、その指向性を変化
調整する。これにより、受信用アンテナ20を衛星に対
して最適な指向性に設定できる。しかる後、回転操作部
33に示される目盛り34と記号35を指標36で確認
し、これと同じ目盛り及び記号が送信用アンテナ10の
回転操作部33において指標36により示されるように
送信用アンテナ10の回転操作部33を操作する。
Therefore, in this communication station, first, the signal from the satellite 2 is received by the receiving antenna 20 and the communication device 1.
Then, the rotation operation section 33 of the receiving antenna 20 is rotated to adjust the directivity thereof so that the reception state becomes the best. Thereby, the receiving antenna 20 can be set to have an optimum directivity with respect to the satellite. After that, the scale 34 and the symbol 35 shown on the rotary operation unit 33 are confirmed with the index 36, and the same scale and symbol are displayed on the transmit antenna 10 as indicated by the index 36 on the rotary operation unit 33 of the transmit antenna 10. The rotation operation unit 33 of is operated.

【0011】送信用アンテナ10の回転操作部33の目
盛り34と記号35は、受信用アンテナ20の指向性に
対応するように形成されているため、この目盛り34と
記号35を設定された受信用アンテナ20のものと一致
させるだけで送信用アンテナ10を衛星2に対して最適
な指向性に設定することが可能となる。このため、衛星
2からの折り返し信号を受信しながら送信用アンテナ1
0の指向性を設定する操作が不要となり、設定を容易に
しかも高い精度で行うことができる。
Since the scale 34 and the symbol 35 of the rotary operation portion 33 of the transmitting antenna 10 are formed so as to correspond to the directivity of the receiving antenna 20, the scale 34 and the symbol 35 for receiving are set. It is possible to set the transmitting antenna 10 to have an optimum directivity with respect to the satellite 2 simply by matching it with that of the antenna 20. For this reason, the transmitting antenna 1 is receiving the return signal from the satellite 2.
The operation of setting the directivity of 0 is unnecessary, and the setting can be performed easily and with high accuracy.

【0012】なお、前記実施例では本発明をヘリカルア
ンテナに適用した例であるが、送信と受信とで異なる周
波数を用いて個別のアンテナを使用する通信装置におい
て、その一部を調整して指向性を変化することができる
アンテナを用いる場合には、送信用アンテナと受信用ア
ンテナのそれぞれに対応する目盛り等を設けておくこと
により、本発明を同様に適用することができる。
In the above embodiment, the present invention is applied to a helical antenna. However, in a communication device that uses individual antennas by using different frequencies for transmission and reception, some of them are adjusted for directivity. In the case of using an antenna whose characteristics can be changed, the present invention can be similarly applied by providing scales and the like corresponding to the transmitting antenna and the receiving antenna.

【0013】[0013]

【発明の効果】以上説明したように本発明は、異なる周
波数を使用する送信用アンテナと受信用アンテナのそれ
ぞれに指向性の変化量を示す目盛りを設け、この目盛り
を利用して指向性を調整できるように構成しているの
で、受信状態を監視しながら最適な受信状態となるよう
に受信用アンテナの指向性を設定した後、その受信用ア
ンテナが示す目盛りに送信用アンテナの目盛りを一致さ
せることで、送信用アンテナの指向性を最適状態に設定
することができ、アンテナ装置の指向性の設定を極めて
容易に行うことができる。また、送信用アンテナと受信
用アンテナをそれぞれヘリカルアンテナで構成すれば、
各ヘリカルアンテナのヘリカルピッチとヘリカル長を調
整可能とすることでその指向性を変化調整できるため、
ヘリカルピッチとヘリカル長を調整する部分に指向性の
変化量に対応する調整量の目盛りを設けておけば、この
目盛りを利用して容易に送受信の各アンテナの指向性を
設定することができる。
As described above, according to the present invention, the transmitting antenna and the receiving antenna, which use different frequencies, are provided with scales indicating the amount of change in the directivity, and the directivity is adjusted using the scales. Since it is configured so that the receiving antenna directivity is set so as to obtain the optimum receiving state while monitoring the receiving state, the scale of the transmitting antenna is made to match the scale indicated by the receiving antenna. Thus, the directivity of the transmitting antenna can be set to the optimum state, and the directivity of the antenna device can be set extremely easily. In addition, if each of the transmitting antenna and the receiving antenna is composed of a helical antenna,
By adjusting the helical pitch and helical length of each helical antenna, its directivity can be changed and adjusted,
If the scale for adjusting the helical pitch and the helical length is provided with an adjustment amount scale corresponding to the amount of change in directivity, the directivity of each antenna for transmission and reception can be easily set using this scale.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例の全体構成を示す概略斜視図
である。
FIG. 1 is a schematic perspective view showing the overall configuration of an embodiment of the present invention.

【図2】図1で用いるヘリカルアンテナの一部を破断し
た拡大斜視図である。
FIG. 2 is an enlarged perspective view in which a part of the helical antenna used in FIG. 1 is cut away.

【図3】VSATにおける通信局の構成を示す概略斜視
図である。
FIG. 3 is a schematic perspective view showing a configuration of a communication station in VSAT.

【図4】ヘリカルアンテナの指向性(仰角)を変化させ
るための原理的な構成図である。
FIG. 4 is a principle configuration diagram for changing the directivity (elevation angle) of a helical antenna.

【符号の説明】[Explanation of symbols]

1 通信装置 2 衛星 10 送信用アンテナ 20 受信用アンテナ 30 誘電体筒 31 ヘリカルアンテナ 32 本体部 33 回転操作部 34 目盛り 35 記号 36 指標 1 Communication Device 2 Satellite 10 Transmitting Antenna 20 Receiving Antenna 30 Dielectric Tube 31 Helical Antenna 32 Main Body 33 Rotating Operation Section 34 Scale 35 Symbol 36 Index

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 送信と受信とで異なる周波数を用いて通
信を行なう通信装置に付設され、その指向性の調整が可
能な送信用アンテナと受信用アンテナとをそれぞれ個別
に設けたアンテナ装置において、前記送信用アンテナと
受信用アンテナのそれぞれに指向性の変化量を示す目盛
りを設け、最適な受信状態に設定される受信用アンテナ
の目盛りに送信用アンテナの目盛りを一致させることが
できるように構成したことを特徴とするアンテナ装置。
1. An antenna device, which is attached to a communication device for performing communication using different frequencies for transmission and reception, and is provided with a transmission antenna and a reception antenna each capable of adjusting its directivity, The scale for indicating the amount of change in directivity is provided on each of the transmitting antenna and the receiving antenna, and the scale of the transmitting antenna can be matched with the scale of the receiving antenna set to an optimum receiving state. An antenna device characterized by the above.
【請求項2】 送信用アンテナと受信用アンテナをそれ
ぞれヘリカルアンテナで構成し、各ヘリカルアンテナの
ヘリカルピッチとヘリカル長を調整可能とし、かつ各ア
ンテナにはその指向性の変化量に対応する調整量の目盛
りを設け、送信用及び受信用の各アンテナの対応する目
盛りには対応する記号を付してなる請求項1のアンテナ
装置。
2. A transmission antenna and a reception antenna are each constituted by a helical antenna, and the helical pitch and the helical length of each helical antenna can be adjusted, and each antenna has an adjustment amount corresponding to the change amount of its directivity. 2. The antenna device according to claim 1, wherein the scale is provided, and a corresponding symbol is attached to the scale corresponding to each of the transmitting antenna and the receiving antenna.
【請求項3】 ヘリカルアンテナを収納する誘電体筒を
軸方向に分割して本体部と回転操作部を構成し、ヘリカ
ルアンテナの一端部を本体部に支持し、他端部を回転操
作部に支持し、回転操作部を回転操作してヘリカルアン
テナを捩り変形してヘリカルピッチとヘリカル長を変化
させ、その変化に対応する回転操作部の回転量を示す目
盛りを付してなる請求項1又は2のアンテナ装置。
3. A main body part and a rotation operating part are formed by axially dividing a dielectric cylinder that houses the helical antenna, one end of the helical antenna is supported by the main part, and the other end is a rotating operation part. 3. A rotary scale is supported, and the helical antenna is torsionally deformed by rotating the rotary operation part to change the helical pitch and the helical length, and a scale indicating the amount of rotation of the rotary operation part corresponding to the changes is attached. 2 antenna devices.
JP5183176A 1993-06-30 1993-06-30 Antenna device Expired - Lifetime JP2500464B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP5183176A JP2500464B2 (en) 1993-06-30 1993-06-30 Antenna device
US08/269,053 US5477232A (en) 1993-06-30 1994-06-29 Antenna apparatus having individual transmitting and receiving antenna elements for different frequencies
EP94110127A EP0632603B1 (en) 1993-06-30 1994-06-29 Antenna apparatus having individual transmitting and receiving antenna elements for different frequencies
DE69421009T DE69421009T2 (en) 1993-06-30 1994-06-29 Antenna connection with individual transmit and receive antenna elements for different frequencies
CA002127079A CA2127079C (en) 1993-06-30 1994-06-29 Antenna apparatus having individual transmitting and receiving antenna elements for different frequencies
AU66060/94A AU680497B2 (en) 1993-06-30 1994-06-29 Antenna apparatus having individual transmitting and receiving antenna elements for different frequencies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5183176A JP2500464B2 (en) 1993-06-30 1993-06-30 Antenna device

Publications (2)

Publication Number Publication Date
JPH0722830A true JPH0722830A (en) 1995-01-24
JP2500464B2 JP2500464B2 (en) 1996-05-29

Family

ID=16131112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5183176A Expired - Lifetime JP2500464B2 (en) 1993-06-30 1993-06-30 Antenna device

Country Status (1)

Country Link
JP (1) JP2500464B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07263945A (en) * 1994-03-25 1995-10-13 Antenna Giken Kk Directional variable helical antenna system
US5892480A (en) * 1997-04-09 1999-04-06 Harris Corporation Variable pitch angle, axial mode helical antenna

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5783114A (en) * 1980-09-19 1982-05-24 Merlin Gerin Ac transmission and distribution circuit protecting device
JPH03274909A (en) * 1989-12-18 1991-12-05 Akg Akust & Kino Geraete Gmbh Ultrashort wave transmitting and /or receiving antenna formed as helical antenna

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5783114A (en) * 1980-09-19 1982-05-24 Merlin Gerin Ac transmission and distribution circuit protecting device
JPH03274909A (en) * 1989-12-18 1991-12-05 Akg Akust & Kino Geraete Gmbh Ultrashort wave transmitting and /or receiving antenna formed as helical antenna

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07263945A (en) * 1994-03-25 1995-10-13 Antenna Giken Kk Directional variable helical antenna system
US5892480A (en) * 1997-04-09 1999-04-06 Harris Corporation Variable pitch angle, axial mode helical antenna

Also Published As

Publication number Publication date
JP2500464B2 (en) 1996-05-29

Similar Documents

Publication Publication Date Title
US5146235A (en) Helical uhf transmitting and/or receiving antenna
US4008479A (en) Dual-frequency circularly polarized spiral antenna for satellite navigation
JP3946955B2 (en) antenna
EP1811601B1 (en) An antenna
US3940772A (en) Circularly polarized, broadside firing tetrahelical antenna
EP0469741A1 (en) Radio frequency apparatus
US20110210900A1 (en) Systems and methods for providing directional radiation fields using distributed loaded monopole antennas
US9757089B2 (en) Rotating unit with a device for wireless data transmission between two parts movable relative to one another, and method for wireless data transmission between two parts movable relative to one another
US9960494B2 (en) Impedance helical antenna forming Π-shaped directional diagram
WO1994027338B1 (en) Msat mast antenna with reduced frequency scanning
US1911234A (en) Antenna system
US20010022561A1 (en) Radio hologram observation apparatus and method therefor
RU2009120036A (en) RADIO COMMUNICATION SYSTEM
CN107851896A (en) Wireless communication device and setting method thereof
US4201990A (en) Tunable dipole antenna
US2535298A (en) Radio antenna system
JP2500464B2 (en) Antenna device
US5477232A (en) Antenna apparatus having individual transmitting and receiving antenna elements for different frequencies
US5489916A (en) Helical antenna having adjustable beam angle
US3054107A (en) Wide band omnidirectional beacon antenna
EP0169823A1 (en) Transmitter-receiver system in a satelite
JPH10290115A (en) Common antenna and portable radio using the same
US1889568A (en) Universally adjustable radio apparatus for aircraft
JP2000114802A (en) Antenna equipment for radar
KR20010030636A (en) Portable reception indicator for satellite radio-navigation systems