JP2011211281A - Repeater and method of manufacturing the same - Google Patents

Repeater and method of manufacturing the same Download PDF

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JP2011211281A
JP2011211281A JP2010074329A JP2010074329A JP2011211281A JP 2011211281 A JP2011211281 A JP 2011211281A JP 2010074329 A JP2010074329 A JP 2010074329A JP 2010074329 A JP2010074329 A JP 2010074329A JP 2011211281 A JP2011211281 A JP 2011211281A
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antenna
directional
relay device
directional antenna
radio waves
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JP5538022B2 (en
JP2011211281A5 (en
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Makoto Ishido
良 石戸
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Kyocera Corp
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Kyocera Corp
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Abstract

PROBLEM TO BE SOLVED: To secure isolation between a directional antenna for transmitting and receiving radio waves to and from a base station and a directional antenna for transmitting and receiving radio waves to and from a mobile station where both the directional antennas are stored in the same casing.SOLUTION: A repeater for relaying communication between the base station and the mobile station includes a donor antenna 20 for transmitting and receiving radio waves to and from the base station, a service antenna 30 having the same resonance frequency as that of the donor antenna 20 and transmitting and receiving radio waves to and from the mobile station, and the casing 10 for storing the donor antenna 20 and the service antenna 30. The donor antenna 20 and the service antenna 30 are disposed so that an orientation direction of the donor antenna 20 differs from that of the service antenna 30, and polarization directions of radio waves radiated from the donor antenna 20 differ from those of radio waves radiated from the service antenna 30.

Description

本発明は、基地局と移動局との間の通信を中継する中継装置およびその製造方法に関する。   The present invention relates to a relay device that relays communication between a base station and a mobile station, and a manufacturing method thereof.

屋内や地下街など基地局からの電波が直接届きにくい場所には、基地局と移動局との間の通信を中継する中継装置（リピータ）が設置されることがある。   A relay device (repeater) that relays communication between a base station and a mobile station may be installed in a place where radio waves from a base station are difficult to reach directly, such as indoors and underground shopping malls.

一般に、中継装置は、基地局と無線通信を行うドナー部と、移動局と無線通信を行うサービス部と、を備えている。このうち、ドナー部には、基地局との間で電波を送受する指向性アンテナ（以下「ドナーアンテナ」という）が含まれ、サービス部には、移動局との間で電波を送受する指向性アンテナ（以下「サービスアンテナ」という）が含まれている。   In general, the relay device includes a donor unit that performs radio communication with a base station and a service unit that performs radio communication with a mobile station. Among these, the donor unit includes a directional antenna (hereinafter referred to as “donor antenna”) that transmits and receives radio waves to and from the base station, and the service unit includes directivity that transmits and receives radio waves to and from the mobile station. An antenna (hereinafter referred to as “service antenna”) is included.

ただし、ドナーアンテナとサービスアンテナとは共振周波数が同一である場合、ドナー部とサービス部とを空間的に離すことによって、両アンテナ間のアイソレーションを確保することが望ましい。   However, when the resonance frequency of the donor antenna and the service antenna is the same, it is desirable to ensure isolation between the two antennas by spatially separating the donor unit and the service unit.

なお、特許文献１には、互いに異なる共振周波数を有する２つのアンテナ間で、従来例に比較して大きなアイソレーションを有する２周波共用平面アンテナが開示されている。   Note that Patent Document 1 discloses a dual-frequency planar antenna having a large isolation between two antennas having different resonance frequencies compared to the conventional example.

特開平５−１７５７２７号公報JP-A-5-175727

しかしながら、ドナーアンテナとサービスアンテナとが１つの筐体内に収納されたアンテナ一体型の中継装置では、ドナー部とサービス部との間に十分な距離をとることができないため、両アンテナ間のアイソレーションを確保することが難しい。   However, in an antenna-integrated relay device in which a donor antenna and a service antenna are housed in a single casing, a sufficient distance cannot be taken between the donor unit and the service unit. It is difficult to ensure.

本発明は、上記課題に鑑みてなされたものであり、同一筐体内に収納される、基地局との間で電波を送受する指向性アンテナと、移動局との間で電波を送受する指向性アンテナと、のアイソレーションを確保することができる中継装置およびその製造方法を提供することを目的とする。   The present invention has been made in view of the above problems, and a directivity antenna that is housed in the same housing and transmits / receives radio waves to / from a base station, and directivity to transmit / receive radio waves to / from a mobile station. It is an object of the present invention to provide a relay device that can ensure isolation from an antenna and a method for manufacturing the relay device.

上記課題を解決するために、本発明に係る中継装置は、基地局と移動局との間の通信を中継する中継装置であって、前記基地局との間で電波を送受する第１の指向性アンテナと、前記第１の指向性アンテナと同一の共振周波数を有し、前記移動局との間で電波を送受する第２の指向性アンテナと、前記第１および第２の指向性アンテナを収納する筐体と、を含み、前記第１および第２の指向性アンテナは、前記第１の指向性アンテナの指向方向と前記第２の指向性アンテナの指向方向とが異なり、かつ、前記第１の指向性アンテナから放射される電波の偏波方向と前記第２の指向性アンテナから放射される電波の偏波方向とが異なるよう、配置されていることを特徴とする。   In order to solve the above problems, a relay device according to the present invention is a relay device that relays communication between a base station and a mobile station, and has a first directivity for transmitting and receiving radio waves to and from the base station. A directional antenna, a second directional antenna having the same resonance frequency as the first directional antenna, and transmitting and receiving radio waves to and from the mobile station; and the first and second directional antennas The first and second directional antennas have different directivity directions of the first directional antenna and the second directional antenna, and the first and second directional antennas are different from each other. The polarization direction of the radio wave radiated from one directional antenna and the polarization direction of the radio wave radiated from the second directional antenna are different from each other.

本発明によれば、同一筐体内に収納された、基地局との間で電波を送受する第１の指向性アンテナと、移動局との間で電波を送受する第２の指向性アンテナと、のアイソレーションを確保することができる。   According to the present invention, a first directional antenna that is housed in the same housing and transmits / receives radio waves to / from a base station, and a second directional antenna that transmits / receives radio waves to / from a mobile station, Isolation can be ensured.

また、本発明の一態様では、前記筐体は、平面状の回路基板をさらに収納し、前記第１の指向性アンテナは、前記回路基板の一方面に取り付けられた、前記回路基板の一方面から前記筐体の外部へ向かう方向に指向性を有するアンテナであり、前記第２の指向性アンテナは、前記回路基板の他方面に取り付けられた、前記回路基板の他方面から前記筐体の外部へ向かう方向に指向性を有するアンテナであってもよい。   In one embodiment of the present invention, the housing further houses a planar circuit board, and the first directional antenna is attached to one surface of the circuit board. The second directional antenna is attached to the other surface of the circuit board from the other surface of the circuit board to the outside of the housing. The antenna may have directivity in the direction toward.

この態様によれば、第１の指向性アンテナの指向方向と第２の指向性アンテナの指向方向が正反対になり、また回路基板が反射板としても作用するため、両アンテナ間のアイソレーションがより確保されやすくなる。   According to this aspect, since the directivity direction of the first directional antenna and the directivity direction of the second directional antenna are opposite to each other and the circuit board also functions as a reflector, the isolation between both antennas is further improved. It becomes easy to be secured.

また、本発明の一態様では、前記第１および第２の指向性アンテナは、それぞれ、誘電体基板と、前記誘電体基板の表面に形成されたパッチ状の導体箔と、前記誘電体基板の裏面に形成された地板導体と、を含むパッチアンテナであってもよい。   In the aspect of the invention, each of the first and second directional antennas includes a dielectric substrate, a patch-like conductor foil formed on the surface of the dielectric substrate, and the dielectric substrate. A patch antenna including a ground plane conductor formed on the back surface may be used.

この態様によれば、同一筐体内に収納されたパッチアンテナ間のアイソレーションを確保することができる。   According to this aspect, it is possible to ensure isolation between patch antennas housed in the same housing.

また、この態様では、前記第１および第２の指向性アンテナは、それぞれ、直線偏波の電波を放射する給電点が１つのパッチアンテナであり、前記第１および第２の指向性アンテナは、前記第１の指向性アンテナから放射される電波の偏波方向と前記第２の指向性アンテナから放射される電波の偏波方向との角度が９０度になるよう配置されてもよい。   Further, in this aspect, each of the first and second directional antennas is a patch antenna having a single feeding point that radiates linearly polarized radio waves, and the first and second directional antennas are: You may arrange | position so that the angle of the polarization direction of the electromagnetic wave radiated | emitted from the said 1st directional antenna and the polarization direction of the electromagnetic wave radiated | emitted from the said 2nd directional antenna may be 90 degree | times.

こうすれば、基地局との間で送受される電波の偏波方向と移動局との間で送受される電波の偏波方向とが直交するため、両パッチアンテナ間のアイソレーションがより確保されやすくなる。   In this way, the polarization direction of the radio wave transmitted / received to / from the base station and the polarization direction of the radio wave transmitted / received to / from the mobile station are orthogonal to each other, so that isolation between both patch antennas is further ensured. It becomes easy.

また、この態様では、前記第１および第２の指向性アンテナは、それぞれ、水平偏波の電波と直線偏波の電波とを同時に放射する給電点が２つの偏波共用パッチアンテナであり、前記第１および第２の指向性アンテナは、前記第１の指向性アンテナから放射される電波の偏波方向と前記第２の指向性アンテナから放射される電波の偏波方向との角度が４５度になるよう配置されてもよい。   Further, in this aspect, each of the first and second directional antennas is a dual-polarization patch antenna having two feeding points that simultaneously radiate a horizontally polarized wave and a linearly polarized wave, The first and second directional antennas have an angle of 45 degrees between the polarization direction of the radio wave radiated from the first directional antenna and the polarization direction of the radio wave radiated from the second directional antenna. May be arranged.

こうすれば、同一筐体内に収納されるパッチアンテナが偏波共用パッチアンテナである場合に、基地局との間で送受される電波の偏波方向と移動局との間で送受される電波の偏波方向とが最大化されるため、両パッチアンテナ間のアイソレーションがより確保されやすくなる。   In this way, when the patch antenna housed in the same housing is a dual-polarization patch antenna, the polarization direction of the radio wave transmitted and received between the base station and the radio wave transmitted and received between the mobile station and Since the polarization direction is maximized, the isolation between both patch antennas is more easily secured.

また、本発明の一態様では、前記第１および第２の指向性アンテナは、前記回路基板の中央部にそれぞれ取り付けられてもよい。   In the aspect of the invention, the first and second directional antennas may be respectively attached to a central portion of the circuit board.

この態様によれば、回路基板の反射板として作用が向上する。   According to this aspect, an effect | action improves as a reflecting plate of a circuit board.

また、本発明に係る中継装置の製造方法は、基地局との間で電波を送受する第１の指向性アンテナと、前記第１の指向性アンテナと同一の共振周波数を有し、移動局との間で電波を送受する第２の指向性アンテナと、前記第１および第２の指向性アンテナを収納する筐体と、を含み、前記基地局と前記移動局との間の通信を中継する中継装置の製造方法であって、前記第１の指向性アンテナの指向方向と前記第２の指向性アンテナの指向方向とが異なり、かつ、前記第１の指向性アンテナから放射される電波の偏波方向と前記第２の指向性アンテナから放射される電波の偏波方向とが異なるよう、前記第１および第２の指向性アンテナを配置する工程を含むことを特徴とする。   The relay device manufacturing method according to the present invention includes a first directional antenna that transmits and receives radio waves to and from a base station, a mobile station that has the same resonance frequency as the first directional antenna, A second directional antenna that transmits and receives radio waves between the base station and a housing that houses the first and second directional antennas, and relays communication between the base station and the mobile station A method of manufacturing a relay device, wherein a directivity direction of the first directional antenna is different from a directivity direction of the second directional antenna, and a deviation of a radio wave radiated from the first directional antenna is obtained. A step of arranging the first and second directional antennas so that a wave direction and a polarization direction of a radio wave radiated from the second directional antenna are different from each other.

本発明の実施形態に係る無線通信システムの全体構成を示す図である。It is a figure which shows the whole structure of the radio | wireless communications system which concerns on embodiment of this invention. 本実施形態に係る中継装置のドナーアンテナから見た透視図を示す図である。It is a figure which shows the perspective view seen from the donor antenna of the relay apparatus which concerns on this embodiment. 本実施形態に係る中継装置のサービスアンテナ側から見た透視図を示す図である。It is a figure which shows the perspective view seen from the service antenna side of the relay apparatus which concerns on this embodiment. 図２のＩＶ方向または図３のＩＶ方向から見た、ドナーアンテナとサービスアンテナとが搭載されたプリント基板を示す図である。It is a figure which shows the printed circuit board with which the donor antenna and the service antenna were mounted seen from IV direction of FIG. 2, or IV direction of FIG. 図４のＶ方向から見たプリント基板の平面図である。It is a top view of the printed circuit board seen from the V direction of FIG. 図４のＶＩ方向から見たプリント基板の平面図である。It is a top view of the printed circuit board seen from VI direction of FIG. ドナーアンテナの給電点と主にアンテナとなる領域とを示す図である。It is a figure which shows the feeding point of a donor antenna, and the area | region used as an antenna mainly. サービスアンテナの給電点と主にアンテナとなる領域とを示す図である。It is a figure which shows the feeding point of a service antenna, and the area | region mainly used as an antenna.

以下、本発明の一実施形態を図面に基づいて詳細に説明する。   Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

図１は、本発明の実施形態に係る無線通信システムの構成を示す図である。図１に示すように、本無線通信システムは、中継装置１００と、基地局２００と、移動局３００と、を含んで構成される。   FIG. 1 is a diagram showing a configuration of a wireless communication system according to an embodiment of the present invention. As shown in FIG. 1, the wireless communication system includes a relay device 100, a base station 200, and a mobile station 300.

中継装置１００は、基地局２００からの電波が直接届きにくい場所（ここでは屋内の窓際）に設置され、基地局２００と移動局３００との間の通信を中継する。これにより、移動局３００は、中継装置１００を介して基地局２００に接続することが可能となり、基地局２００のサービスエリアが拡張される。   The relay device 100 is installed at a place where radio waves from the base station 200 are difficult to reach directly (here, indoor windows), and relays communication between the base station 200 and the mobile station 300. As a result, the mobile station 300 can connect to the base station 200 via the relay device 100, and the service area of the base station 200 is expanded.

図１に示すように、中継装置１００は、たとえば樹脂製の筐体１０と、筐体１０内に収納されたドナーアンテナ２０およびサービスアンテナ３０と、を含むアンテナ一体型の中継装置である。ドナーアンテナ２０は、基地局２００との間で電波を送受する指向性アンテナであり、サービスアンテナ３０は、移動局３００との間で電波を送受する指向性アンテナである。なお、ドナーアンテナ２０とサービスアンテナ３０の共振周波数は同一であるため、両アンテナ間に相互干渉が生じないようアイソレーションを確保する必要がある。   As shown in FIG. 1, the relay device 100 is an antenna-integrated relay device including, for example, a resin casing 10 and a donor antenna 20 and a service antenna 30 housed in the casing 10. The donor antenna 20 is a directional antenna that transmits and receives radio waves to and from the base station 200, and the service antenna 30 is a directional antenna that transmits and receives radio waves to and from the mobile station 300. Since the donor antenna 20 and the service antenna 30 have the same resonance frequency, it is necessary to ensure isolation so that mutual interference does not occur between the two antennas.

この点、本実施形態では、ドナーアンテナ２０の指向方向とサービスアンテナ３０の指向方向とが異なり、かつ、ドナーアンテナ２０から放射される電波の偏波方向とサービスアンテナ３０から放射される電波の偏波方向とが異なるよう、ドナーアンテナ２０とサービスアンテナ３０とを配置することにより、両アンテナ間のアイソレーションを確保している。   In this regard, in this embodiment, the directivity direction of the donor antenna 20 and the directivity direction of the service antenna 30 are different, and the polarization direction of the radio wave radiated from the donor antenna 20 and the deviation of the radio wave radiated from the service antenna 30 are different. By arranging the donor antenna 20 and the service antenna 30 so that the wave directions are different, isolation between the two antennas is ensured.

以下、ドナーアンテナ２０およびサービスアンテナ３０の配置について、より詳細に説明する。   Hereinafter, the arrangement of the donor antenna 20 and the service antenna 30 will be described in more detail.

図２は、中継装置１００のドナーアンテナ２０側から見た透視図を示す図であり、図３は、中継装置１００のサービスアンテナ３０側から見た透視図を示す図である。   2 is a diagram showing a perspective view of the relay device 100 as viewed from the donor antenna 20 side, and FIG. 3 is a diagram of a perspective view of the relay device 100 as viewed from the service antenna 30 side.

図２および図３に示すように、中継装置１００の筐体１０内には、無線通信用の回路が形成された平面状の回路基板であるプリント基板４０がさらに収納されており、その一方面にドナーアンテナ２０が取り付けられ、その他方面（裏面）に板金５０を介してサービスアンテナ３０が取り付けられている。   As shown in FIGS. 2 and 3, a printed circuit board 40, which is a planar circuit board on which a circuit for wireless communication is formed, is further accommodated in the casing 10 of the relay device 100. The donor antenna 20 is attached to the other side, and the service antenna 30 is attached to the other side (back side) via the sheet metal 50.

また、プリント基板４０のドナーアンテナ２０側の面には、外部機器との間でデータの送受などを行うためのＵＳＢコネクタ６０、プリント基板４０上の熱を放熱する金属製のヒートシンク７０などがさらに取り付けられている。   Further, on the surface of the printed circuit board 40 on the side of the donor antenna 20, there are further provided a USB connector 60 for transmitting / receiving data to / from an external device, a metal heat sink 70 for radiating heat on the printed circuit board 40, and the like. It is attached.

図４は、図２のＩＶ方向または図３のＩＶ方向から見た、ドナーアンテナ２０とサービスアンテナ３０とが搭載されたプリント基板４０を示す図である。また、図５は、図４のＶ方向から見たプリント基板４０の平面図であり、図６は、図４のＶＩ方向から見たプリント基板４０の平面図である。   4 is a diagram showing the printed circuit board 40 on which the donor antenna 20 and the service antenna 30 are mounted, viewed from the IV direction in FIG. 2 or the IV direction in FIG. 5 is a plan view of the printed circuit board 40 viewed from the direction V in FIG. 4, and FIG. 6 is a plan view of the printed circuit board 40 viewed from the direction VI in FIG.

ドナーアンテナ２０は、図４および図５に示すように、誘電体基板２１と、誘電体基板２１の表面に形成されたパッチ状（ここでは矩形状）の導体箔２２と、誘電体基板２１の裏面（プリント基板４０側の面）に形成された地板導体（図示せず）と、を含む偏波共用パッチアンテナ（後述）であり、導体箔２２から筐体１０の外部へ向かう方向（プリント基板４０のドナーアンテナ２０側の面から筐体１０の外部へ向かう方向）に指向性を有する。このドナーアンテナ２０は、アンテナ固定用樹脂２３によりプリント基板４０に固定されている。   4 and 5, the donor antenna 20 includes a dielectric substrate 21, a patch-like (here rectangular) conductive foil 22 formed on the surface of the dielectric substrate 21, and the dielectric substrate 21. And a polarization shared patch antenna (described later) including a ground plane conductor (not shown) formed on the back surface (surface on the printed circuit board 40 side), and a direction (printed circuit board) from the conductor foil 22 toward the outside of the housing 10. 40 has a directivity in the direction from the surface on the donor antenna 20 side toward the outside of the housing 10. The donor antenna 20 is fixed to the printed circuit board 40 with an antenna fixing resin 23.

サービスアンテナ３０は、図４および図６に示すように、誘電体基板３１と、誘電体基板３１の表面に形成されたパッチ状（ここでは矩形状）の導体箔３２と、誘電体基板３１の裏面（プリント基板４０側の面）に形成された地板導体（図示せず）と、を含む偏波共用パッチアンテナ（後述）であり、導体箔３２から筐体１０の外部へ向かう方向（プリント基板４０のサービスアンテナ３０側の面から筐体１０の外部へ向かう方向）に指向性を有する。このサービスアンテナ３０は、アンテナ固定用樹脂３３により板金５０を介してプリント基板４０に固定されている。   As shown in FIGS. 4 and 6, the service antenna 30 includes a dielectric substrate 31, a patch-like (here rectangular) conductive foil 32 formed on the surface of the dielectric substrate 31, and the dielectric substrate 31. A polarization shared patch antenna (described later) including a ground plane conductor (not shown) formed on the back surface (surface on the printed circuit board 40 side), and a direction (printed circuit board) from the conductor foil 32 toward the outside of the housing 10. The directivity is in the direction from the surface of the 40 service antenna 30 to the outside of the housing 10. The service antenna 30 is fixed to the printed circuit board 40 via a sheet metal 50 by an antenna fixing resin 33.

このように、ドナーアンテナ２０の指向方向とサービスアンテナ３０の指向方向とが正反対になるよう、ドナーアンテナ２０およびサービスアンテナ３０がプリント基板４０に取り付けられているため、両アンテナ間のアイソレーションは確保されやすい。   Thus, since the donor antenna 20 and the service antenna 30 are attached to the printed circuit board 40 so that the directivity direction of the donor antenna 20 and the directivity direction of the service antenna 30 are opposite to each other, the isolation between the two antennas is ensured. Easy to be.

なお、板金５０は、プリント基板４０とサービスアンテナ３０との間に配置され、プリント基板４０を概ね覆う形状の導体板であり、ドナーアンテナ２０とサービスアンテナ３０とのアイソレーションを確保する反射板として作用する。なお、プリント基板４０および板金５０それぞれの反射板として作用を向上させるためには、図５および図６に示すように、ドナーアンテナ２０およびサービスアンテナ３０をプリント基板４０の中央部（板金５０の中央部）にそれぞれ取り付けることが好ましい。   The sheet metal 50 is a conductor plate that is disposed between the printed circuit board 40 and the service antenna 30 and substantially covers the printed circuit board 40, and serves as a reflection plate that ensures isolation between the donor antenna 20 and the service antenna 30. Works. In order to improve the function as a reflector of each of the printed board 40 and the sheet metal 50, as shown in FIGS. 5 and 6, the donor antenna 20 and the service antenna 30 are placed at the center of the printed board 40 (the center of the sheet metal 50). It is preferable to attach to each part.

次に、図７および図８に基づいて、ドナーアンテナ２０から放射される電波の偏波方向と、サービスアンテナ３０から放射される電波の偏波方向と、の関係について説明する。   Next, based on FIG. 7 and FIG. 8, the relationship between the polarization direction of the radio wave radiated from the donor antenna 20 and the polarization direction of the radio wave radiated from the service antenna 30 will be described.

図７は、ドナーアンテナ２０の給電点と主にアンテナとなる領域とを示す図である。図７に示すように、ドナーアンテナ２０は、給電点２４および給電点２５という２つの給電点を有する偏波共用パッチアンテナであり、水平偏波の電波と直線偏波の電波とを同時に放射することができる。すなわち、給電点２４に給電すると、ドナーアンテナ２０の領域２６が主にアンテナとなって、領域２６の長手方向に沿う方向に偏波する直線偏波の電波が放射される。さらに給電点２５にも給電すると、ドナーアンテナ２０の領域２７が主にアンテナとなって、領域２７の長手方向に沿う方向（領域２６の長手方向に直交する方向）に偏波する直線偏波の電波が同時に放射される。   FIG. 7 is a diagram illustrating a feeding point of the donor antenna 20 and a region mainly serving as an antenna. As shown in FIG. 7, the donor antenna 20 is a polarization sharing patch antenna having two feeding points, that is, a feeding point 24 and a feeding point 25, and radiates a horizontally polarized wave and a linearly polarized wave simultaneously. be able to. That is, when power is supplied to the feeding point 24, the region 26 of the donor antenna 20 mainly serves as an antenna, and linearly polarized radio waves polarized in the direction along the longitudinal direction of the region 26 are radiated. When the feeding point 25 is further fed, the region 27 of the donor antenna 20 mainly serves as an antenna, and linearly polarized waves that are polarized in a direction along the longitudinal direction of the region 27 (a direction orthogonal to the longitudinal direction of the region 26). Radio waves are emitted at the same time.

図８は、サービスアンテナ３０の給電点と主にアンテナとなる領域とを示す図である。図８に示すように、サービスアンテナ３０は、給電点３４および給電点３５という２つの給電点を有する偏波共用パッチアンテナであり、水平偏波の電波と直線偏波の電波とを同時に放射することができる。すなわち、給電点３４に給電すると、サービスアンテナ３０の領域３６が主にアンテナとなって、領域３６の長手方向に沿う方向に偏波する直線偏波の電波が放射される。さらに給電点３５にも給電すると、ドナーアンテナ２０の領域３７が主にアンテナとなって、領域３７の長手方向に沿う方向（領域３６の長手方向に直交する方向）に偏波する直線偏波の電波が同時に放射される。   FIG. 8 is a diagram illustrating a feeding point of the service antenna 30 and a region mainly serving as an antenna. As shown in FIG. 8, the service antenna 30 is a polarization sharing patch antenna having two feeding points, that is, a feeding point 34 and a feeding point 35, and radiates a horizontally polarized wave and a linearly polarized wave simultaneously. be able to. That is, when power is supplied to the feeding point 34, the region 36 of the service antenna 30 mainly serves as an antenna, and linearly polarized radio waves polarized in the direction along the longitudinal direction of the region 36 are radiated. When the feeding point 35 is further fed, the region 37 of the donor antenna 20 is mainly an antenna, and linearly polarized waves polarized in a direction along the longitudinal direction of the region 37 (a direction orthogonal to the longitudinal direction of the region 36). Radio waves are emitted at the same time.

そして、本実施形態では、図７および図８に示すように、ドナーアンテナ２０から放射される電波の偏波方向とサービスアンテナ３０から放射される電波の偏波方向との角度が４５度になるよう、ドナーアンテナ２０およびサービスアンテナ３０がプリント基板４０に取り付けられている。このため、ドナーアンテナ２０と基地局２００との間で送受される電波の偏波方向と、サービスアンテナ３０と移動局３００との間で送受される電波の偏波方向と、が最大化され、両アンテナ間のアイソレーションがより確保されやすくなる。このようなアンテナ配置は、たとえば中継装置１００が、基地局２００および移動局３００の少なくとも一方とＭＩＭＯ（Multiple-Input Multiple-Output）方式による無線通信を行う場合などに有効である。   In this embodiment, as shown in FIGS. 7 and 8, the angle between the polarization direction of the radio wave radiated from the donor antenna 20 and the polarization direction of the radio wave radiated from the service antenna 30 is 45 degrees. As described above, the donor antenna 20 and the service antenna 30 are attached to the printed circuit board 40. For this reason, the polarization direction of radio waves transmitted and received between the donor antenna 20 and the base station 200 and the polarization direction of radio waves transmitted and received between the service antenna 30 and the mobile station 300 are maximized, Isolation between both antennas is more easily secured. Such an antenna arrangement is effective, for example, when the relay apparatus 100 performs radio communication with at least one of the base station 200 and the mobile station 300 using a MIMO (Multiple-Input Multiple-Output) scheme.

以上説明した中継装置１００によれば、ドナーアンテナ２０の指向方向とサービスアンテナ３０の指向方向とが異なり、かつ、ドナーアンテナ２０から放射される電波の偏波方向とサービスアンテナ３０から放射される電波の偏波方向とが異なるよう、ドナーアンテナ２０とサービスアンテナ３０とが配置されている。このため、同一の筐体１０内にドナーアンテナ２０とサービスアンテナ３０とを収納しても、両アンテナ間のアイソレーションを確保することでき、中継装置の小型化が可能となる。   According to the relay device 100 described above, the directivity direction of the donor antenna 20 and the directivity direction of the service antenna 30 are different, and the polarization direction of the radio wave radiated from the donor antenna 20 and the radio wave radiated from the service antenna 30 The donor antenna 20 and the service antenna 30 are arranged so that their polarization directions are different. For this reason, even if the donor antenna 20 and the service antenna 30 are housed in the same housing 10, it is possible to ensure isolation between the two antennas and to reduce the size of the relay device.

なお、本発明は、上記実施形態に限定されるものではない。   The present invention is not limited to the above embodiment.

たとえば、上記実施形態では、ドナーアンテナおよびサービスアンテナの双方が偏波共用パッチアンテナである例を示したが、両アンテナは直線偏波の電波を放射する給電点が１つのパッチアンテナであってもよい（誘電体基板の表面に形成される導体箔の形状は、矩形状に限らず、たとえば円形状であってもよい）。この場合、ドナーアンテナから放射される電波の偏波方向とサービスアンテナから放射される電波の偏波方向との角度が９０度になるよう、ドナーアンテナおよびサービスアンテナを配置することが望ましい。こうすれば、ドナーアンテナと基地局との間で送受される電波の偏波方向とサービスアンテナと、移動局との間で送受される電波の偏波方向と、が直交するため、両アンテナ間のアイソレーションがより確保されやすくなる。   For example, in the above-described embodiment, an example in which both the donor antenna and the service antenna are polarization-polarized patch antennas has been shown. However, both antennas may be a patch antenna that has a single feeding point that radiates linearly polarized radio waves. The shape of the conductive foil formed on the surface of the dielectric substrate is not limited to a rectangular shape, and may be a circular shape, for example. In this case, it is desirable to arrange the donor antenna and the service antenna so that the angle between the polarization direction of the radio wave radiated from the donor antenna and the polarization direction of the radio wave radiated from the service antenna becomes 90 degrees. In this way, the polarization direction of the radio wave transmitted / received between the donor antenna and the base station is orthogonal to the polarization direction of the radio wave transmitted / received between the service antenna and the mobile station. It is easier to ensure the isolation of the.

もちろん、ドナーアンテナは、基地局との間で電波を送受する指向性アンテナであれば、パッチアンテナに限定されない。同様に、サービスアンテナも、ドナーアンテナと同一の共振周波数を有し、移動局との間で電波を送受する指向性アンテナであれば、パッチアンテナに限定されない。また、ドナーアンテナの指向方向とサービスアンテナの指向方向は、異なってさえいれば正反対でなくてもよいし、ドナーアンテナから放射される電波の偏波方向とサービスアンテナから放射される電波の偏波方向も、異なってさえいればその角度は４５度または９０度に限定されない。   Of course, the donor antenna is not limited to the patch antenna as long as it is a directional antenna that transmits and receives radio waves to and from the base station. Similarly, the service antenna is not limited to the patch antenna as long as it has the same resonance frequency as the donor antenna and is a directional antenna that transmits and receives radio waves to and from the mobile station. In addition, the directivity direction of the donor antenna and the directivity direction of the service antenna need not be opposite as long as they are different, and the polarization direction of the radio wave radiated from the donor antenna and the polarization direction of the radio wave radiated from the service antenna As long as the directions are different, the angle is not limited to 45 degrees or 90 degrees.

１０ 筐体、２０ ドナーアンテナ、２１，３１ 誘電体基板、２２，３２ 導体箔、２３，３３ アンテナ固定用樹脂、２４，２５，３４，３５ 給電点、２６，２７，３６，３７ 領域、３０ サービスアンテナ、４０ プリント基板、５０ 板金、６０ ＵＳＢコネクタ、７０ ヒートシンク、１００ 中継装置、２００ 基地局、３００ 移動局。
10 Housing, 20 Donor antenna, 21, 31 Dielectric substrate, 22, 32 Conductor foil, 23, 33 Antenna fixing resin, 24, 25, 34, 35 Feed point, 26, 27, 36, 37 area, 30 Service Antenna, 40 Printed circuit board, 50 Sheet metal, 60 USB connector, 70 Heat sink, 100 Relay device, 200 Base station, 300 Mobile station.

Claims (7)

基地局と移動局との間の通信を中継する中継装置であって、
前記基地局との間で電波を送受する第１の指向性アンテナと、
前記第１の指向性アンテナと同一の共振周波数を有し、前記移動局との間で電波を送受する第２の指向性アンテナと、
前記第１および第２の指向性アンテナを収納する筐体と、
を含み、
前記第１および第２の指向性アンテナは、前記第１の指向性アンテナの指向方向と前記第２の指向性アンテナの指向方向とが異なり、かつ、前記第１の指向性アンテナから放射される電波の偏波方向と前記第２の指向性アンテナから放射される電波の偏波方向とが異なるよう、配置されている、
ことを特徴とする中継装置。 A relay device that relays communication between a base station and a mobile station,
A first directional antenna that transmits and receives radio waves to and from the base station;
A second directional antenna having the same resonance frequency as the first directional antenna and transmitting and receiving radio waves to and from the mobile station;
A housing that houses the first and second directional antennas;
Including
The first and second directional antennas have different directivity directions of the first and second directional antennas, and are radiated from the first directional antenna. It is arranged so that the polarization direction of the radio wave and the polarization direction of the radio wave radiated from the second directional antenna are different.
A relay device characterized by that. 請求項１に記載された中継装置において、
前記筐体は、平面状の回路基板をさらに収納し、
前記第１の指向性アンテナは、前記回路基板の一方面に取り付けられた、前記回路基板の一方面から前記筐体の外部へ向かう方向に指向性を有するアンテナであり、
前記第２の指向性アンテナは、前記回路基板の他方面に取り付けられた、前記回路基板の他方面から前記筐体の外部へ向かう方向に指向性を有するアンテナである、
ことを特徴とする中継装置。 In the relay apparatus according to claim 1,
The housing further stores a planar circuit board,
The first directional antenna is an antenna attached to one surface of the circuit board and having directivity in a direction from one surface of the circuit board toward the outside of the housing;
The second directional antenna is an antenna attached to the other surface of the circuit board and having directivity in a direction from the other surface of the circuit board toward the outside of the housing.
A relay device characterized by that. 請求項１または２のいずれかに記載された中継装置において、
前記第１および第２の指向性アンテナは、それぞれ、誘電体基板と、前記誘電体基板の表面に形成されたパッチ状の導体箔と、前記誘電体基板の裏面に形成された地板導体と、を含むパッチアンテナである、
ことを特徴とする中継装置。 The relay device according to claim 1 or 2,
Each of the first and second directional antennas includes a dielectric substrate, a patch-like conductor foil formed on the surface of the dielectric substrate, a ground plane conductor formed on the back surface of the dielectric substrate, Including patch antennas,
A relay device characterized by that. 請求項３に記載された中継装置において、
前記第１および第２の指向性アンテナは、それぞれ、直線偏波の電波を放射する給電点が１つのパッチアンテナであり、
前記第１および第２の指向性アンテナは、前記第１の指向性アンテナから放射される電波の偏波方向と前記第２の指向性アンテナから放射される電波の偏波方向との角度が９０度になるよう配置されている、
ことを特徴とする中継装置。 The relay device according to claim 3,
Each of the first and second directional antennas is a patch antenna having a single feeding point that radiates linearly polarized radio waves,
In the first and second directional antennas, an angle between a polarization direction of a radio wave radiated from the first directional antenna and a polarization direction of a radio wave radiated from the second directional antenna is 90. Arranged to be a degree,
A relay device characterized by that. 請求項３に記載された中継装置において、
前記第１および第２の指向性アンテナは、それぞれ、水平偏波の電波と直線偏波の電波とを同時に放射する給電点が２つの偏波共用パッチアンテナであり、
前記第１および第２の指向性アンテナは、前記第１の指向性アンテナから放射される電波の偏波方向と前記第２の指向性アンテナから放射される電波の偏波方向との角度が４５度になるよう配置されている、
ことを特徴とする中継装置。 The relay device according to claim 3,
Each of the first and second directional antennas is a dual-polarization patch antenna having a feeding point that simultaneously radiates a horizontally polarized wave and a linearly polarized wave,
In the first and second directional antennas, an angle between a polarization direction of a radio wave radiated from the first directional antenna and a polarization direction of a radio wave radiated from the second directional antenna is 45. Arranged to be a degree,
A relay device characterized by that. 請求項２に記載された中継装置において、
前記第１および第２の指向性アンテナは、前記回路基板の中央部にそれぞれ取り付けられている、
ことを特徴とする中継装置。 The relay device according to claim 2,
The first and second directional antennas are respectively attached to the central part of the circuit board.
A relay device characterized by that. 基地局との間で電波を送受する第１の指向性アンテナと、前記第１の指向性アンテナと同一の共振周波数を有し、移動局との間で電波を送受する第２の指向性アンテナと、前記第１および第２の指向性アンテナを収納する筐体と、を含み、前記基地局と前記移動局との間の通信を中継する中継装置の製造方法であって、
前記第１の指向性アンテナの指向方向と前記第２の指向性アンテナの指向方向とが異なり、かつ、前記第１の指向性アンテナから放射される電波の偏波方向と前記第２の指向性アンテナから放射される電波の偏波方向とが異なるよう、前記第１および第２の指向性アンテナを配置する工程、
を含むことを特徴とする中継装置の製造方法。
A first directional antenna that transmits and receives radio waves to and from a base station, and a second directional antenna that has the same resonance frequency as the first directional antenna and transmits and receives radio waves to and from mobile stations And a casing that houses the first and second directional antennas, and a method for manufacturing a relay device that relays communication between the base station and the mobile station,
The directivity direction of the first directional antenna and the directivity direction of the second directional antenna are different, and the polarization direction of the radio wave radiated from the first directional antenna and the second directivity Arranging the first and second directional antennas so that the polarization directions of radio waves radiated from the antenna are different from each other;
The manufacturing method of the relay apparatus characterized by including.
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