JP2005191769A - Antenna - Google Patents

Antenna Download PDF

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Publication number
JP2005191769A
JP2005191769A JP2003428649A JP2003428649A JP2005191769A JP 2005191769 A JP2005191769 A JP 2005191769A JP 2003428649 A JP2003428649 A JP 2003428649A JP 2003428649 A JP2003428649 A JP 2003428649A JP 2005191769 A JP2005191769 A JP 2005191769A
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JP
Japan
Prior art keywords
antenna
antenna element
present
dielectric
semicircular
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Pending
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JP2003428649A
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Japanese (ja)
Inventor
Rikuro Shimamori
陸郎 嶌森
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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Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority to JP2003428649A priority Critical patent/JP2005191769A/en
Priority to KR1020040079080A priority patent/KR20050065278A/en
Priority to US11/020,833 priority patent/US7446726B2/en
Priority to CN200410082258.7A priority patent/CN1641935A/en
Priority to EP04030838A priority patent/EP1548879B1/en
Priority to DE602004010357T priority patent/DE602004010357D1/en
Publication of JP2005191769A publication Critical patent/JP2005191769A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/40—Element having extended radiating surface
    • 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
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0471—Non-planar, stepped or wedge-shaped patch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna for realizing superior wide-band characteristics and a smaller body. <P>SOLUTION: The antenna includes an almost semicircular antenna element 1. The antenna has a monopole structure, where power is fed to one end of the diameter of the antenna element 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、携帯通信機器等に具備されるアンテナに関する。   The present invention relates to an antenna provided in a mobile communication device or the like.

広帯域特性を実現するアンテナとして円形のアンテナエレメントを用いた円板モノポールアンテナが知られている。また、その円板モノポールアンテナを小型化するために、従来は、円形のアンテナエレメントを変形させている。例えば、円形のアンテナエレメントを直径を折り目にして直角に折り曲げている（例えば、特許文献１参照）。
特開２００２−１６４７３１号公報 A disk monopole antenna using a circular antenna element is known as an antenna that realizes wideband characteristics. In addition, in order to reduce the size of the disk monopole antenna, a circular antenna element is conventionally deformed. For example, a circular antenna element is bent at a right angle with a crease in diameter (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2002-164731

しかし、上述した従来の小型化の方法では、まだアンテナエレメントが占有する空間が大きく、小型化が不十分であるという問題が生じている。例えば、携帯電話機等の携帯通信機器のように実装スペースが制限される場合には、更なる小型化が要求されている。   However, the conventional miniaturization method described above has a problem that the space occupied by the antenna element is still large and the miniaturization is insufficient. For example, when the mounting space is limited like a mobile communication device such as a mobile phone, further downsizing is required.

また、円形のアンテナエレメントを変形させることにより所望の周波数帯域内に反共振点が発生してＶＳＷＲ（Voltage Standing Wave Ratio）特性が乱れ、一様な広帯域特性を得ることが難しいという問題もある。   Another problem is that by deforming the circular antenna element, an anti-resonance point is generated in a desired frequency band, VSWR (Voltage Standing Wave Ratio) characteristics are disturbed, and it is difficult to obtain uniform broadband characteristics.

本発明は、このような事情を考慮してなされたもので、その目的は、良好な広帯域特性を実現するとともに、より小型化を図ることができるアンテナを提供することにある。   The present invention has been made in view of such circumstances, and an object of the present invention is to provide an antenna that can realize a good broadband characteristic and can be further miniaturized.

上記の課題を解決するために、請求項１に記載のアンテナは、ほぼ半円形のアンテナエレメントを備え、前記アンテナエレメントの直径の一端部に給電を行うモノポール又はダイポール構造を有することを特徴としている。   In order to solve the above-described problem, the antenna according to claim 1 includes a substantially semicircular antenna element, and has a monopole or dipole structure that feeds power to one end of a diameter of the antenna element. Yes.

請求項２に記載のアンテナにおいては、前記アンテナエレメントが誘電体上に形成されたことを特徴とする。   The antenna according to claim 2 is characterized in that the antenna element is formed on a dielectric.

本発明によれば、ほぼ半円形のアンテナエレメントを用いることにより、アンテナエレメントが占有する空間を縮小することができる。さらに、所望の周波数帯域内に反共振点が発生することがないので、良好な広帯域特性を得ることができる。   According to the present invention, by using a substantially semicircular antenna element, the space occupied by the antenna element can be reduced. Furthermore, since no anti-resonance point is generated in a desired frequency band, a good broadband characteristic can be obtained.

以下、図面を参照し、本発明の実施形態を説明する。
図１は、本発明の第１の実施形態に係るアンテナの概略構成を示す側面図である。本実施形態においては、ほぼ半円形のアンテナエレメント１を用いてモノポール構造に組み立てている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a schematic configuration of an antenna according to a first embodiment of the present invention. In the present embodiment, a monopole structure is assembled using a substantially semicircular antenna element 1.

アンテナエレメント１は半円形の導体板からなる部材である。アンテナエレメント１は、その直径が当該アンテナの共振波長λの略１／４となる長さである。なお、アンテナエレメント１は、図２（ａ）に示されるように地板３と垂直に設けられてもよく、あるいは図２（ｂ）に示されるように地板３と平行に設けられてもよい。また、アンテナエレメント１に使用される導体板は、ほぼ半円形状であればよい。例えば半楕円形状であってもよい。また、該アンテナエレメントの外周部にスタブ部材が設けられてもよい。   The antenna element 1 is a member made of a semicircular conductor plate. The antenna element 1 has such a length that its diameter is approximately ¼ of the resonance wavelength λ of the antenna. The antenna element 1 may be provided perpendicular to the ground plane 3 as shown in FIG. 2 (a), or may be provided parallel to the ground plane 3 as shown in FIG. 2 (b). Moreover, the conductor plate used for the antenna element 1 should just be a substantially semicircle shape. For example, it may be semi-elliptical. A stub member may be provided on the outer peripheral portion of the antenna element.

給電部２はアンテナエレメント１に給電を行う部材である。給電部２はアンテナエレメント１の直径の一端と、地板３とに接続されている。   The power feeding unit 2 is a member that feeds power to the antenna element 1. The power feeding unit 2 is connected to one end of the diameter of the antenna element 1 and the ground plane 3.

上記した構成によれば、アンテナエレメントがほぼ半円形状であるので、アンテナエレメントが占有する空間を縮小することができる。さらに、ほぼ半円形の導体板によってアンテナエレメントが構成されるので、所望の周波数帯域内に反共振点が発生することがなく、良好な広帯域特性を得ることができる。   According to the configuration described above, since the antenna element has a substantially semicircular shape, the space occupied by the antenna element can be reduced. Furthermore, since the antenna element is constituted by a substantially semicircular conductor plate, an anti-resonance point does not occur in a desired frequency band, and good broadband characteristics can be obtained.

次に、第２の実施形態を説明する。
図３は、本発明の第２の実施形態に係るアンテナの概略構成を示す側面図である。本実施形態においては、ほぼ半円形のアンテナエレメント１が誘電体１０上に形成されている。誘電体１０は例えばセラミック素材を使用したものである。これにより、アンテナを小さくすることができる。なお、図４に示されるように、アンテナエレメント１は、地板３に対してオフセット距離ｄを持って配置されていてもよい。 Next, a second embodiment will be described.
FIG. 3 is a side view showing a schematic configuration of the antenna according to the second embodiment of the present invention. In the present embodiment, a substantially semicircular antenna element 1 is formed on a dielectric 10. The dielectric 10 uses a ceramic material, for example. Thereby, an antenna can be made small. As illustrated in FIG. 4, the antenna element 1 may be disposed with an offset distance d with respect to the ground plane 3.

次に、図５は、本発明によるＶＳＷＲ特性の改善効果を示すためのシミュレーション結果が示されているグラフである。
図５において、波形Ａは、図６（ａ）に示される本発明に係るアンテナのシミュレーション結果である。図６（ａ）のアンテナは、半円形のアンテナエレメント１が誘電体１０上に形成されている。波形Ｂは、図６（ｂ）に示される従来の円板モノポールアンテナのシミュレーション結果である。図６（ｂ）のアンテナは、円形のアンテナエレメント１００が誘電体１０上に形成されている。波形Ｃは、図６（ｃ）に示される円板を折り畳んだ半円形状モノポールアンテナのシミュレーション結果である。図６（ｃ）のアンテナは、円形のアンテナエレメント１００がコの字形に折り畳まれており、また誘電体１０上に形成されている。 Next, FIG. 5 is a graph showing simulation results for showing the effect of improving the VSWR characteristics according to the present invention.
In FIG. 5, a waveform A is a simulation result of the antenna according to the present invention shown in FIG. In the antenna of FIG. 6A, a semicircular antenna element 1 is formed on a dielectric 10. Waveform B is a simulation result of the conventional disc monopole antenna shown in FIG. In the antenna of FIG. 6B, a circular antenna element 100 is formed on the dielectric 10. Waveform C is a simulation result of a semicircular monopole antenna in which the disk shown in FIG. 6C is folded. In the antenna of FIG. 6C, a circular antenna element 100 is folded in a U shape and is formed on the dielectric 10.

円板を折り畳んだ半円形状モノポールアンテナの波形Ｃは、５．１ＧＨｚ付近で反共振点が発生し、良好なＶＳＷＲ特性ではない。また、図６（ｃ）に示されるように、表面と裏面とが同一形状になるように折り畳まれているために、表面と裏面のアンテナエレメント１００に流れる電流の位相が逆になる状態が発生する。これにより、誘電体１０の材質等の要因によって損失が増加する周波数帯域が生じ、放射効率が悪化する。
一方、本発明に係るアンテナの波形Ａは、図６（ｂ）の従来の円板モノポールアンテナの波形Ｂに比べるとＶＳＷＲ特性は平均的に劣るが、反共振点は無く、アンテナの占有面積と性能とは相反することを鑑みれば、良好であると判断できる。 The waveform C of the semicircular monopole antenna in which the disk is folded has an antiresonance point in the vicinity of 5.1 GHz and is not a good VSWR characteristic. Further, as shown in FIG. 6C, since the front surface and the back surface are folded so as to have the same shape, the phase of the current flowing through the antenna element 100 on the front surface and the back surface is reversed. To do. As a result, a frequency band in which loss increases due to factors such as the material of the dielectric 10 is generated, and radiation efficiency deteriorates.
On the other hand, the waveform A of the antenna according to the present invention has an average inferior VSWR characteristic as compared with the waveform B of the conventional disc monopole antenna shown in FIG. In view of the conflict between performance and performance, it can be determined that the performance is good.

以上、本発明の実施形態を図面を参照して詳述してきたが、具体的な構成はこの実施形態に限られるものではなく、本発明の要旨を逸脱しない範囲の設計変更等も含まれる。
例えば、本発明はダイポールアンテナにも適用することができる。なお、ダイポールアンテナにはクロスダイポールと呼ばれるものも含まれる。図７は、本発明に係るダイポール構造のアンテナの概略構成を示す図である。この実施例では、２つの半円形のアンテナエレメント１がダイポール構造に組み立てられている。そして、図７（ａ）の実施例ではアンテナエレメント１が同じ向きに、図７（ｂ）の実施例ではアンテナエレメント１が反対向きに、それぞれ配置されている。 The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design changes and the like within a scope not departing from the gist of the present invention.
For example, the present invention can be applied to a dipole antenna. The dipole antenna includes what is called a cross dipole. FIG. 7 is a diagram showing a schematic configuration of a dipole antenna according to the present invention. In this embodiment, two semicircular antenna elements 1 are assembled in a dipole structure. In the embodiment of FIG. 7A, the antenna elements 1 are arranged in the same direction, and in the embodiment of FIG. 7B, the antenna elements 1 are arranged in the opposite direction.

本発明の第１の実施形態に係るアンテナの概略構成を示す側面図である。It is a side view showing a schematic structure of an antenna concerning a 1st embodiment of the present invention. 本発明に係るアンテナエレメントの配置例を説明するための図である。It is a figure for demonstrating the example of arrangement | positioning of the antenna element which concerns on this invention. 本発明の第２の実施形態に係るアンテナの概略構成を示す側面図である。It is a side view which shows schematic structure of the antenna which concerns on the 2nd Embodiment of this invention. 本発明に係るアンテナエレメントの配置例を説明するための図である。It is a figure for demonstrating the example of arrangement | positioning of the antenna element which concerns on this invention. 本発明によるＶＳＷＲ特性の改善効果を示すためのグラフである。It is a graph for showing the improvement effect of the VSWR characteristic by the present invention. 図５に示す波形Ａ〜Ｃに対応するアンテナの構成を示す図である。It is a figure which shows the structure of the antenna corresponding to the waveform AC shown in FIG. 本発明に係るダイポール構造のアンテナの概略構成を示す図である。It is a figure which shows schematic structure of the antenna of the dipole structure which concerns on this invention.

符号の説明Explanation of symbols

１…アンテナエレメント、２…給電部、３…地板、１０…誘電体。

DESCRIPTION OF SYMBOLS 1 ... Antenna element, 2 ... Feeding part, 3 ... Ground plane, 10 ... Dielectric material.

Claims (2)

ほぼ半円形のアンテナエレメントを備え、
前記アンテナエレメントの直径の一端部に給電を行うモノポール又はダイポール構造を有することを特徴とするアンテナ。 With a semi-circular antenna element,
An antenna having a monopole or dipole structure that feeds power to one end of a diameter of the antenna element. 前記アンテナエレメントが誘電体上に形成されたことを特徴とする請求項１に記載のアンテナ。


The antenna according to claim 1, wherein the antenna element is formed on a dielectric.


JP2003428649A 2003-12-25 2003-12-25 Antenna Pending JP2005191769A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2003428649A JP2005191769A (en) 2003-12-25 2003-12-25 Antenna
KR1020040079080A KR20050065278A (en) 2003-12-25 2004-10-05 Antenna
US11/020,833 US7446726B2 (en) 2003-12-25 2004-12-23 Antenna
CN200410082258.7A CN1641935A (en) 2003-12-25 2004-12-24 Antenna
EP04030838A EP1548879B1 (en) 2003-12-25 2004-12-27 Antenna
DE602004010357T DE602004010357D1 (en) 2003-12-25 2004-12-27 antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003428649A JP2005191769A (en) 2003-12-25 2003-12-25 Antenna

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JP2005191769A true JP2005191769A (en) 2005-07-14

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KR (1) KR20050065278A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007052425A1 (en) * 2005-11-01 2007-05-10 Konica Minolta Holdings, Inc. Antenna device
JP2007306232A (en) * 2006-05-10 2007-11-22 Fujitsu Component Ltd Plane antenna device
JP2010050548A (en) * 2008-08-19 2010-03-04 Samsung Electronics Co Ltd Antenna device

Citations (12)

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Publication number Priority date Publication date Assignee Title
JPS57142003A (en) * 1981-02-27 1982-09-02 Denki Kogyo Kk Antenna
JPS60237701A (en) * 1984-05-11 1985-11-26 Yagi Antenna Co Ltd Self-complementary antenna
JPH09223921A (en) * 1995-09-27 1997-08-26 N T T Ido Tsushinmo Kk Wide-band antenna device using semicircular radiation plate
DE19703864A1 (en) * 1997-02-03 1998-06-25 Markus Dr Ing Thieme Stripline conductor antenna element
WO2001033668A1 (en) * 1999-11-04 2001-05-10 Nippon Tungsten Co., Ltd. Dielectric antenna
US20020053994A1 (en) * 1999-05-03 2002-05-09 Xtremespectrum, Inc Planar ultra wide band antenna with integrated electronics
JP2002164731A (en) * 2000-11-24 2002-06-07 Mitsubishi Electric Corp Antenna device
US6600454B1 (en) * 1999-02-24 2003-07-29 Nokia Networks Oy Antenna radiator
JP2003273638A (en) * 2002-03-13 2003-09-26 Sony Corp Wide band antenna device
JP2003283233A (en) * 2002-03-26 2003-10-03 Sony Corp Wideband antenna device
JP2003309418A (en) * 2002-04-17 2003-10-31 Alps Electric Co Ltd Dipole antenna
US20030214444A1 (en) * 2002-04-12 2003-11-20 Sony Corporation Broadband antenna apparatus

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57142003A (en) * 1981-02-27 1982-09-02 Denki Kogyo Kk Antenna
JPS60237701A (en) * 1984-05-11 1985-11-26 Yagi Antenna Co Ltd Self-complementary antenna
JPH09223921A (en) * 1995-09-27 1997-08-26 N T T Ido Tsushinmo Kk Wide-band antenna device using semicircular radiation plate
DE19703864A1 (en) * 1997-02-03 1998-06-25 Markus Dr Ing Thieme Stripline conductor antenna element
US6600454B1 (en) * 1999-02-24 2003-07-29 Nokia Networks Oy Antenna radiator
US20020053994A1 (en) * 1999-05-03 2002-05-09 Xtremespectrum, Inc Planar ultra wide band antenna with integrated electronics
WO2001033668A1 (en) * 1999-11-04 2001-05-10 Nippon Tungsten Co., Ltd. Dielectric antenna
JP2002164731A (en) * 2000-11-24 2002-06-07 Mitsubishi Electric Corp Antenna device
JP2003273638A (en) * 2002-03-13 2003-09-26 Sony Corp Wide band antenna device
JP2003283233A (en) * 2002-03-26 2003-10-03 Sony Corp Wideband antenna device
US20030214444A1 (en) * 2002-04-12 2003-11-20 Sony Corporation Broadband antenna apparatus
JP2003309418A (en) * 2002-04-17 2003-10-31 Alps Electric Co Ltd Dipole antenna

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007052425A1 (en) * 2005-11-01 2007-05-10 Konica Minolta Holdings, Inc. Antenna device
JP2007306232A (en) * 2006-05-10 2007-11-22 Fujitsu Component Ltd Plane antenna device
JP2010050548A (en) * 2008-08-19 2010-03-04 Samsung Electronics Co Ltd Antenna device

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