JP2008160726A - Antenna apparatus - Google Patents

Antenna apparatus Download PDF

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Publication number
JP2008160726A
JP2008160726A JP2006350034A JP2006350034A JP2008160726A JP 2008160726 A JP2008160726 A JP 2008160726A JP 2006350034 A JP2006350034 A JP 2006350034A JP 2006350034 A JP2006350034 A JP 2006350034A JP 2008160726 A JP2008160726 A JP 2008160726A
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Prior art keywords
antenna
sleeve
radome
cone
reflector
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JP2006350034A
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JP5010910B2 (en
Inventor
Minoru Hasegawa
実 長谷川
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Priority to JP2006350034A priority Critical patent/JP5010910B2/en
Priority to KR1020070052289A priority patent/KR100933152B1/en
Priority to EP07123991.7A priority patent/EP1939981B1/en
Priority to CN2007101605552A priority patent/CN101212079B/en
Priority to US11/964,499 priority patent/US7812778B2/en
Publication of JP2008160726A publication Critical patent/JP2008160726A/en
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Publication of JP5010910B2 publication Critical patent/JP5010910B2/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna apparatus which removes non-sensitive directions, and at the same time, has a suppression means for easily suppressing the change of an antenna directivity pattern caused by the effect of a feed line or a radome and an improvement means for simply improving the VSWR deterioration caused by the effect of a reflector or the radome. <P>SOLUTION: The antenna apparatus includes a sleeve antenna 25 composed of a central conductor 10 and a sleeve 20 by being connected to a coaxial cable 30 and a conical reflector 40. The sleeve antenna 25 is arranged so that the central conductor 10 is matched with the central axis of the cone in the recess of the cone, and the top end of the central conductor 10 is separate from the vertex portion of the cone. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は移動通信における基地局用アンテナに係り、詳しくは、特に狭いサービスエリアに適した基地局用アンテナ装置、または電波不感エリアへの中継局用アンテナ装置に関する。   The present invention relates to a base station antenna in mobile communication, and more particularly to a base station antenna device particularly suitable for a narrow service area or a relay station antenna device for a radio wave insensitive area.

移動通信における基地局用アンテナは、大規模のエリアをカバーする目的の基地局アンテナと、比較的限られた小規模のエリアをカバーする目的の基地局アンテナとで使い分けられている。この比較的限られた小範囲のエリアをカバーする目的のアンテナは、高層建築物などにより電波が遮断され、所謂ビルの影となる電波の不感エリアをカバーするために用いられている。都市圏においては、このような不感エリアが比較的近距離に点在するため、不感エリア毎に小規模のエリアをカバーするアンテナを持つ中継局を配備し、互いに中継し合って不感エリアを解消するマルチホッピング方式の概念が検討されている。   Base station antennas in mobile communications are selectively used for base station antennas that cover large areas and base station antennas that cover relatively limited small areas. The antenna for the purpose of covering a relatively limited small area is used to cover a radio wave insensitive area which is a shadow of a so-called building where radio waves are blocked by a high-rise building or the like. In urban areas, such dead areas are scattered at relatively short distances, so a relay station with an antenna that covers a small area for each dead area is deployed and relayed to each other to eliminate dead areas. The concept of a multi-hopping scheme is being studied.

電波不感エリアまたは狭いサービスエリアに適した基地局用アンテナとして、モノポールアンテナやダイポールアンテナが使用されている。特許文献１には、有限地板によるモノポールアンテナのエレメント形状に関する記載がされている。例えばこのようなモノポールアンテナを、狭いサービスエリアの基地局やマルチホッピング方式の中継局に使用する場合、ビルの壁などが利用できない場合には、自立用アンテナとして設置する必要が生じる。
ＵＳ２００５／０１５６８０４Ａ１ Monopole antennas and dipole antennas are used as base station antennas suitable for radio wave insensitive areas or narrow service areas. Patent Document 1 describes the element shape of a monopole antenna using a finite ground plane. For example, when such a monopole antenna is used for a base station in a narrow service area or a multi-hopping relay station, if a building wall or the like cannot be used, it needs to be installed as a self-supporting antenna.
US2005 / 0156804A1

図８は、モノポールアンテナを自立用アンテナとして設置したモノポールアンテナ設置形態とその特性図である。図８ａにおいて、地面９０に立てられた自立用のアンテナ取付け支柱９１の先端にモノポールアンテナ９２が設置され、基地局または中継局（図示されず）から給電線９３により、放射電波の高周波電力が供給されている。有限地板は天頂側に設置されているため、Ｘ−Ｚ平面における指向性は、ビルの谷間に向けて電波を放射するに適した水平方向から下に向かってメインローブが生じる。一方、図８ｂは、設置されたモノポールアンテナ９２のＸ−Ｙ面での指向性を示す指向性特性図である。モノポールアンテナ９２は、Ｘ−Ｙ面ではオムニ（全方向性）特性を示し円形となるが、電波は支柱９１による干渉を受け、−Ｘ方向において電波の減衰が生じ、円形が歪んでいる。この減衰により、−Ｘ方向は通信品質低下あるいは通信不能となり、全方向にわたる電波不感エリアの解消が困難となる。   FIG. 8 is a monopole antenna installation form in which the monopole antenna is installed as a self-supporting antenna and its characteristic diagram. In FIG. 8a, a monopole antenna 92 is installed at the tip of a self-supporting antenna mounting support column 91 standing on the ground 90, and high-frequency power of a radiated radio wave is supplied from a base station or a relay station (not shown) through a feeder line 93. Have been supplied. Since the finite ground plane is installed on the zenith side, the directivity in the XZ plane has a main lobe downward from a horizontal direction suitable for radiating radio waves toward the valley of the building. On the other hand, FIG. 8 b is a directivity characteristic diagram showing the directivity on the XY plane of the installed monopole antenna 92. The monopole antenna 92 has an omni (omnidirectional) characteristic on the XY plane and is circular. However, the radio wave is interfered by the support column 91, the radio wave is attenuated in the -X direction, and the circle is distorted. Due to this attenuation, communication quality decreases or communication becomes impossible in the -X direction, and it is difficult to eliminate the radio wave insensitive area in all directions.

本発明はこのような従来技術の課題を解決するためになされたものであり、その目的は、アンテナ取付け支柱との干渉を抑制して不感方向を無くし、且つ、給電線やレドームの影響によるアンテナ指向性パターンの変動を抑制する簡易な抑制手段と反射器やレドームの影響によるＶＳＷＲ悪化を改善する簡易な改善手段を具備したアンテナ装置を提供することにある。   The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to suppress the insensitive direction by suppressing interference with the antenna mounting column, and to prevent the antenna from being affected by the feeder line and radome. An object of the present invention is to provide an antenna device including simple suppression means for suppressing fluctuations in directivity patterns and simple improvement means for improving VSWR deterioration due to the influence of reflectors and radomes.

本発明のアンテナ装置は、同軸線路に結合されて中心導体とスリーブとから構成されるスリーブアンテナと、円錐状の反射器とを備え、円錐の凹側に中心導体が円錐の中心軸に一致し、円錐の頂点から中心導体の先端が離間するようにスリーブアンテナを配置したことを特徴とする。   An antenna device of the present invention includes a sleeve antenna that is coupled to a coaxial line and includes a central conductor and a sleeve, and a conical reflector, and the central conductor coincides with the central axis of the cone on the concave side of the cone. The sleeve antenna is arranged such that the tip of the central conductor is separated from the apex of the cone.

本発明のアンテナ装置は、反射器の円錐の中心軸に沿ってスリーブアンテナの中心導体にインピーダンス整合用ディスクを取付けたことを特徴とする。   The antenna device according to the present invention is characterized in that an impedance matching disk is attached to the central conductor of the sleeve antenna along the central axis of the cone of the reflector.

本発明のアンテナ装置は、反射器の円錐の中心軸に沿ってスリーブアンテナの同軸線路側に、電波の干渉を抑制する干渉抑制用ディスクを配置したことを特徴とする。   The antenna device according to the present invention is characterized in that an interference suppression disk for suppressing radio wave interference is arranged on the coaxial line side of the sleeve antenna along the central axis of the cone of the reflector.

本発明のアンテナ装置は、円錐状の樹脂性のレドームを設け、反射器の底面とレドームの底面とを互いに密着させて収納空間を形成し、この収納空間内にスリーブアンテナを収納したことを特徴とする。   The antenna device of the present invention is characterized in that a conical resin radome is provided, the bottom surface of the reflector and the bottom surface of the radome are brought into close contact with each other to form a storage space, and the sleeve antenna is stored in this storage space. And

本発明のアンテナ装置は、側面が円柱状で上面が円錐状のレドームを設け、反射器をレドームの上面に配置し、円柱の内部にスリーブアンテナを収納したことを特徴とする。   The antenna device of the present invention is characterized in that a radome having a cylindrical side surface and a conical upper surface is provided, a reflector is disposed on the upper surface of the radome, and a sleeve antenna is housed inside the cylinder.

本発明のアンテナ装置の反射器は、金属板、金属網または金属を被覆した誘電体で構成されることを特徴とする。   The reflector of the antenna device of the present invention is characterized by being composed of a metal plate, a metal net, or a dielectric coated with metal.

本発明のアンテナ装置によれば、アンテナ取付け支柱との干渉を抑制して不感方向を無くし、且つ、給電線やレドームの影響によるアンテナ指向性パターンの変動を抑制する簡易な抑制手段と反射器やレドームの影響によるＶＳＷＲ悪化を改善する簡易な改善手段を具備したアンテナ装置が可能となる。これにより小エリア用基地局アンテナおよび中継局アンテナとして使用できるアンテナ装置を提供することが可能となる。   According to the antenna device of the present invention, simple suppression means and reflectors that suppress interference with the antenna mounting column to eliminate the dead direction and suppress variations in the antenna directivity pattern due to the influence of the feeder line and radome, An antenna device including a simple improvement means for improving the VSWR deterioration due to the influence of the radome is possible. This makes it possible to provide an antenna device that can be used as a small area base station antenna and a relay station antenna.

本発明によるアンテナ装置の実施の形態について図を用いて説明する。図１は、本発明のアンテナ装置の構成を示すアンテナ構成図である。スリーブアンテナ２５は、放射電波の高周波電力が供給される同軸線路３０に結合された中心導体１０とスリーブ２０とから構成されている。またスリーブアンテナ２５は、円錐状の反射器４０と円錐状の樹脂性のレドーム７０との底面が互いに密着されて形成された収納空間内に収納され、アンテナ装置１００を構成している。収納においては、反射器４０の円錐の凹側に中心導体１０が円錐の中心軸に一致し、円錐の頂点から中心導体の先端が離間するように配置されている。   Embodiments of an antenna device according to the present invention will be described with reference to the drawings. FIG. 1 is an antenna configuration diagram showing the configuration of the antenna device of the present invention. The sleeve antenna 25 includes a center conductor 10 and a sleeve 20 coupled to a coaxial line 30 to which high-frequency power of radiated radio waves is supplied. The sleeve antenna 25 is housed in a housing space formed such that the bottom surfaces of the conical reflector 40 and the conical resin radome 70 are in close contact with each other, thereby constituting the antenna device 100. In storage, the central conductor 10 is arranged on the concave side of the cone of the reflector 40 so as to coincide with the central axis of the cone, and the tip of the central conductor is separated from the apex of the cone.

また中心導体１０の先端側には、レドーム７０で発生した反射波の影響と、特に中心導体１０が反射器４０と接近することにより発生する結合の影響によるＶＳＷＲの悪化を改善するためのインピーダンス整合用ディスク５０が配備されている。同軸線路３０には、同軸線路３０に流れる漏れ電流が、送信機（図示されず）のコネクタ側に流れることを抑制すると同時に、レドーム７０の円錐状の先端側に直接電波が放出され、大きな干渉が発生することを抑制し、さらに接続されるアンテナ取付け支柱８０（図７）がパイプ形状である場合、漏れ導波管として作用することを抑制するための干渉抑制用ディスク６０が配備されている。このインピーダンス整合用ディスク５０と干渉抑制用ディスク６０とにより、電波は破線で示される方向に効率よく放射され、水平方向から下に向かってメインローブが生じる。   Further, the impedance matching for improving the deterioration of the VSWR due to the influence of the reflected wave generated by the radome 70 and particularly the influence of the coupling generated when the center conductor 10 approaches the reflector 40 is provided at the front end side of the center conductor 10. A disk 50 is provided. The coaxial line 30 suppresses the leakage current flowing through the coaxial line 30 from flowing to the connector side of the transmitter (not shown), and at the same time, radio waves are directly emitted to the conical tip side of the radome 70, resulting in large interference. When the antenna mounting support 80 (FIG. 7) to be connected is in the shape of a pipe, an interference suppressing disk 60 is provided for suppressing the functioning as a leaky waveguide. . By the impedance matching disk 50 and the interference suppression disk 60, radio waves are efficiently radiated in the direction indicated by the broken line, and a main lobe is generated downward from the horizontal direction.

次に、アンテナ装置１００の形状について説明する。円錐形状の反射器４０の開き角は１５０度、直径は約３．７５波長である。円盤状のインピーダンス整合用ディスク５０の直径は、約１／８波長である。また円盤状の干渉抑制用ディスク６０の直径は、約１／２波長である。スリーブアンテナ２５の中心導体１０とスリーブ２０の長さは、それぞれ１／４波長である。スリーブ２０の上端から干渉抑制用ディスク６０までの距離は、約３／８波長である。スリーブ２０の上端からインピーダンス整合用ディスク５０までの距離は、約１／１６波長である。反射器４０からインピーダンス整合用ディスク５０までの距離は、約１／１６波長である。   Next, the shape of the antenna device 100 will be described. The opening angle of the conical reflector 40 is 150 degrees, and the diameter is about 3.75 wavelengths. The diameter of the disk-shaped impedance matching disk 50 is about 1/8 wavelength. The diameter of the disk-shaped interference suppressing disk 60 is about ½ wavelength. The lengths of the central conductor 10 and the sleeve 20 of the sleeve antenna 25 are each ¼ wavelength. The distance from the upper end of the sleeve 20 to the interference suppressing disk 60 is about 3/8 wavelength. The distance from the upper end of the sleeve 20 to the impedance matching disk 50 is about 1/16 wavelength. The distance from the reflector 40 to the impedance matching disk 50 is about 1/16 wavelength.

図２は、本発明のアンテナ装置の内部の実装形態を示す内部実装図である。図２ａにおいて、同軸線路３０に結合されたスリーブアンテナ２５と、整合手段であるインピーダンス整合用ディスク５０と干渉抑制用ディスク６０とが、レドーム７０の円錐状の先端側の円形空洞部を貫通して挿入され、固定されている。図２ｂは、反射器４０の形状を示しており、反射器４０とレドーム７０との底面が互いに密着され、アンテナ取付け支柱８０に取付け前のアンテナ装置１００を構成する。   FIG. 2 is an internal mounting diagram showing an internal mounting form of the antenna device of the present invention. In FIG. 2 a, the sleeve antenna 25 coupled to the coaxial line 30, the impedance matching disk 50 as the matching means, and the interference suppression disk 60 pass through the circular cavity on the conical tip side of the radome 70. Inserted and fixed. FIG. 2 b shows the shape of the reflector 40, and the bottom surfaces of the reflector 40 and the radome 70 are in close contact with each other to constitute the antenna device 100 before being attached to the antenna attachment column 80.

図３は、本発明のアンテナ装置の外部の実装形態を示す外部実装図である。図３ａにおいて、スリーブアンテナ２５は、反射器４０とレドーム７０が密着されて形成された収納空間内に収納され、アンテナ取付け支柱８０に取付けられてアンテナ装置１００を構成している。図３ｂは、アンテナ装置１００の斜視図である。このアンテナ装置１００は、ビルの屋上または地上の特定の場所に自立アンテナとして設置される。   FIG. 3 is an external mounting diagram showing an external mounting form of the antenna device of the present invention. In FIG. 3 a, the sleeve antenna 25 is housed in a housing space formed by bringing the reflector 40 and the radome 70 into close contact with each other, and is attached to the antenna mounting column 80 to constitute the antenna device 100. FIG. 3 b is a perspective view of the antenna device 100. The antenna device 100 is installed as a self-supporting antenna on a rooftop of a building or a specific place on the ground.

図４は、本発明のアンテナ装置のＸ−Ｚ平面における指向性を示す指向性特性図である。図４において、指向性特性のメインローブは、斜め下に最大利得を持つパターンを示している。また本発明のアンテナ装置は、図３に見られるように、アンテナ取付け支柱８０の先端に取付けられるため、支柱８０による干渉を受けることが無く、Ｘ−Ｙ平面の指向性は安定したオムニパターンを示す。これにより、支柱による影となる電波の不感エリアが無くなるため、通信できない場所を解消することができる。   FIG. 4 is a directivity characteristic diagram showing directivity in the XZ plane of the antenna device of the present invention. In FIG. 4, the main lobe of the directivity characteristic shows a pattern having the maximum gain obliquely below. Further, as shown in FIG. 3, the antenna device of the present invention is attached to the tip of the antenna mounting column 80, so that it is not affected by the column 80, and the XY plane directivity has a stable omni pattern. Show. Thereby, since the insensitive area of the radio wave which becomes a shadow by a support | pillar disappears, the place which cannot communicate can be eliminated.

図５は、本発明のアンテナ装置のインピーダンス整合用ディスクの効果を示すＶＳＷＲ特性図である。中心導体１０の先端側では、レドーム７０で発生した反射波の影響と、中心導体１０が反射器４０と接近することにより発生する結合の影響により、ＶＳＷＲ特性が悪化する。図５において、破線はインピーダンス整合用ディスクが配備されていない場合、実線は配備されている場合を示し、ＶＳＷＲ特性が０．５〜１．０改善されている。また、基地局用アンテナや中継局用アンテナは受信のみでなく、比較的大電力の電波を送信する場合が考えられるので、ＶＳＷＲは１．３以下が望まれるが、このディスクの効果により充分達成することができる。   FIG. 5 is a VSWR characteristic diagram showing the effect of the impedance matching disk of the antenna device of the present invention. On the distal end side of the central conductor 10, the VSWR characteristics are deteriorated due to the influence of the reflected wave generated by the radome 70 and the influence of the coupling generated when the central conductor 10 approaches the reflector 40. In FIG. 5, the broken line indicates the case where the impedance matching disk is not provided, and the solid line indicates the case where it is provided, and the VSWR characteristic is improved by 0.5 to 1.0. In addition, since the base station antenna and the relay station antenna may transmit not only reception but also relatively high power radio waves, VSWR of 1.3 or less is desired. can do.

図６は、本発明のアンテナ装置の干渉抑制用ディスクの効果を示す放射電波のリップル特性図である。同軸線路３０には漏れ電流が流れることで干渉波が発生し、レドーム７０の円錐状の先端側には直接電波が放出され大きな干渉が発生し、さらに接続されるアンテナ取付け支柱８０がパイプ形状である場合、漏れ導波管として作用し干渉波が発生する。干渉抑制用ディスク６０は、これらの問題を解消するためのものである。図６において、破線は干渉抑制用ディスクが配備されていない場合、実線は配備されている場合を示す。水平方向（９０度）に対し、４５度下の方向（１３５度）に向かってメインローブが生じている。また７０度下の方向（１６０度）で電波は急激に減衰し、アンテナ取付け支柱８０である９０度方向（１８０度）へは殆ど放射されない。縦軸はｄＢｉスケールで示されている。干渉によるリップルは、干渉抑制用ディスク６０により抑制され、放射電波のリップル特性は、なだらかな曲線を有するパターンとなっている。   FIG. 6 is a ripple characteristic diagram of the radiated radio wave showing the effect of the interference suppressing disk of the antenna device of the present invention. An interference wave is generated by leakage current flowing through the coaxial line 30, radio waves are directly emitted from the conical tip side of the radome 70, and a large interference is generated. Further, the antenna mounting column 80 to be connected has a pipe shape. In some cases, it acts as a leaky waveguide and generates an interference wave. The interference suppression disk 60 is for solving these problems. In FIG. 6, a broken line indicates a case where an interference suppression disk is not provided, and a solid line indicates a case where it is provided. The main lobe is generated in a direction 45 degrees below (135 degrees) with respect to the horizontal direction (90 degrees). In addition, the radio wave rapidly attenuates in a direction 70 degrees below (160 degrees), and is hardly radiated in the 90 degrees direction (180 degrees) that is the antenna mounting column 80. The vertical axis is shown in dBi scale. The ripple due to the interference is suppressed by the interference suppression disk 60, and the ripple characteristic of the radiated radio wave has a pattern having a gentle curve.

図７は、本発明のアンテナ装置の他の実施例を示す構成図である。図７において、同軸線路３０に結合されたスリーブアンテナ２５と、整合手段であるインピーダンス整合用ディスク５０と干渉抑制用ディスク６０とが、側面が円柱状で上面が円錐状のレドーム７０の円柱状の内部に挿入され、固定されている。反射器４０は、レドーム７０の上面に配置され、アンテナ取付け支柱８０に取付け前のアンテナ装置１００を構成している。この簡易な構成により、風圧の弱い屋内における不感エリアをカバーすることができる。また図１および図７に示される反射器４０は、金属板、金属網または金属を被覆した誘電体で構成される。   FIG. 7 is a block diagram showing another embodiment of the antenna device of the present invention. In FIG. 7, a sleeve antenna 25 coupled to the coaxial line 30, an impedance matching disk 50 and an interference suppression disk 60, which are matching means, have a cylindrical shape of a radome 70 having a cylindrical side surface and a conical upper surface. Inserted and fixed inside. The reflector 40 is disposed on the upper surface of the radome 70 and constitutes the antenna device 100 before being mounted on the antenna mounting column 80. With this simple configuration, it is possible to cover an insensitive area where the wind pressure is weak indoors. Moreover, the reflector 40 shown by FIG. 1 and FIG. 7 is comprised with the dielectric material which coat | covered the metal plate, the metal net | network, or the metal.

以上説明したとおり、本発明によると、アンテナ取付け支柱との干渉を抑制して不感方向を無くし、且つ、給電線やレドームの影響によるアンテナ指向性パターンの変動を抑制する簡易な抑制手段と反射器やレドームの影響によるＶＳＷＲ悪化を改善する簡易な改善手段を具備したアンテナ装置が可能となる。これにより小エリア用基地局アンテナ、および都市部等の建造物間に発生する、所謂電波の不感地帯において、他の基地局との間に障害物が無い高さに設置し、斜め下の不感地帯に電波を中継する、中継局アンテナとして使用することが可能となる。   As described above, according to the present invention, simple suppression means and a reflector that suppress the interference with the antenna mounting column to eliminate the insensitive direction and suppress the variation of the antenna directivity pattern due to the influence of the feeder line and radome. In addition, an antenna device equipped with simple improvement means for improving the VSWR deterioration due to the influence of the radome can be realized. In this way, in a so-called insensitive area of radio waves generated between small area base station antennas and buildings such as urban areas, it is installed at a height where there are no obstacles between other base stations, It can be used as a relay station antenna that relays radio waves to the area.

本発明のアンテナ装置の構成を示すアンテナ構成図。The antenna block diagram which shows the structure of the antenna apparatus of this invention. 本発明のアンテナ装置の内部の実装形態を示す内部実装図。The internal mounting figure which shows the internal mounting form of the antenna apparatus of this invention. 本発明のアンテナ装置の外部の実装形態を示す外部実装図。The external mounting figure which shows the external mounting form of the antenna apparatus of this invention. 本発明のアンテナ装置のＸ−Ｚ平面における指向性を示す指向性特性図。The directivity characteristic figure which shows the directivity in the XZ plane of the antenna apparatus of this invention. 本発明のアンテナ装置のＶＳＷＲ特性図。The VSWR characteristic view of the antenna apparatus of this invention. 本発明のアンテナ装置の放射電波のリップル特性図。The ripple characteristic figure of the radiation wave of the antenna apparatus of this invention. 本発明のアンテナ装置の他の実施例を示す構成図。The block diagram which shows the other Example of the antenna apparatus of this invention. 従来のモノポールアンテナ設置形態とその特性図。The conventional monopole antenna installation form and its characteristic diagram.

符号の説明Explanation of symbols

１０ 中心導体
２０ スリーブ
２５ スリーブアンテナ
３０ 同軸線路
４０ 反射器
５０ インピーダンス整合用ディスク
６０ 干渉抑制用ディスク
７０ レドーム
８０、９１ アンテナ取付け支柱
９０ 地面
９２ モノポールアンテナ
９３ 給電線
１００ アンテナ装置 DESCRIPTION OF SYMBOLS 10 Center conductor 20 Sleeve 25 Sleeve antenna 30 Coaxial line 40 Reflector 50 Impedance matching disk 60 Interference suppression disk 70 Radome 80, 91 Antenna mounting support 90 Ground 92 Monopole antenna 93 Feed line 100 Antenna device

Claims (6)

同軸線路に結合されて中心導体とスリーブとから構成されるスリーブアンテナと、
円錐状の反射器とを備え、
前記円錐の凹側に前記中心導体が前記円錐の中心軸に一致し、前記円錐の頂点から前記中心導体の先端が離間するように前記スリーブアンテナを配置したことを特徴とするアンテナ装置。 A sleeve antenna coupled to a coaxial line and composed of a central conductor and a sleeve;
With a conical reflector,
The antenna apparatus, wherein the sleeve antenna is arranged on the concave side of the cone so that the central conductor coincides with the central axis of the cone and the tip of the central conductor is separated from the apex of the cone. 前記円錐の中心軸に沿って前記スリーブアンテナの前記中心導体にインピーダンス整合用ディスクを取付けたことを特徴とする請求項１に記載のアンテナ装置。   2. The antenna device according to claim 1, wherein an impedance matching disk is attached to the central conductor of the sleeve antenna along the central axis of the cone. 前記円錐の中心軸に沿って前記スリーブアンテナの前記同軸線路側に、電波の干渉を抑制する干渉抑制用ディスクを配置したことを特徴とする請求項１に記載のアンテナ装置。   The antenna device according to claim 1, wherein an interference suppression disk for suppressing radio wave interference is disposed on the coaxial line side of the sleeve antenna along the central axis of the cone. 円錐状の樹脂性のレドームを設け、前記反射器の底面と前記レドームの底面とを互いに密着させて収納空間を形成し、この収納空間内に前記スリーブアンテナを収納したことを特徴とする請求項１乃至３のいずれか１項に記載のアンテナ装置。   The conical resin radome is provided, the bottom surface of the reflector and the bottom surface of the radome are brought into close contact with each other to form a storage space, and the sleeve antenna is stored in the storage space. The antenna device according to any one of 1 to 3. 側面が円柱状で上面が円錐状のレドームを設け、前記反射器を前記レドームの前記上面に配置し、前記円柱の内部に前記スリーブアンテナを収納したことを特徴とする請求項１乃至３のいずれか１項に記載のアンテナ装置。   4. A radome having a cylindrical side surface and a conical upper surface is provided, the reflector is disposed on the upper surface of the radome, and the sleeve antenna is housed inside the cylinder. The antenna device according to claim 1. 前記反射器は、金属板、金属網または金属を被覆した誘電体で構成されることを特徴とする請求項１乃至５のいずれか１項に記載のアンテナ装置。   The antenna device according to claim 1, wherein the reflector is made of a metal plate, a metal net, or a dielectric coated with metal.
JP2006350034A 2006-12-26 2006-12-26 Antenna device Expired - Fee Related JP5010910B2 (en)

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EP07123991.7A EP1939981B1 (en) 2006-12-26 2007-12-21 Antenna apparatus
CN2007101605552A CN101212079B (en) 2006-12-26 2007-12-25 Antenna apparatus
US11/964,499 US7812778B2 (en) 2006-12-26 2007-12-26 Antenna apparatus

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JPS6232711A (en) 1985-08-05 1987-02-12 Hisamatsu Nakano Parabolic antenna system
KR200295968Y1 (en) * 2002-08-22 2002-11-29 (주)하이게인텔레콤 Omni directional antenna using dielectric substrate
KR20030093146A (en) * 2003-11-01 2003-12-06 주식회사 선우커뮤니케이션 Wide band omni antenna
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KR200375813Y1 (en) * 2004-11-16 2005-03-11 주식회사 감마누 Partial exposed omni-antenna

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Publication number Priority date Publication date Assignee Title
JPS5890716U (en) * 1981-12-15 1983-06-20 日本電気株式会社 antenna device
JPH07183718A (en) * 1993-12-22 1995-07-21 Harada Ind Co Ltd Antenna for communication system
JP2001217621A (en) * 2000-01-31 2001-08-10 Toshiba Corp Cassegrain antenna
JP2001257523A (en) * 2000-03-13 2001-09-21 Ntt Docomo Inc Base station antenna device
JP2002353723A (en) * 2001-05-25 2002-12-06 Hitachi Kokusai Electric Inc Parabolic antenna with radome

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KR20080060126A (en) 2008-07-01
KR100933152B1 (en) 2009-12-21

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