WO2001001519A1 - Directional antenna with electromagnetic interference suppressor - Google Patents

Directional antenna with electromagnetic interference suppressor Download PDF

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Publication number
WO2001001519A1
WO2001001519A1 PCT/JP1999/003493 JP9903493W WO0101519A1 WO 2001001519 A1 WO2001001519 A1 WO 2001001519A1 JP 9903493 W JP9903493 W JP 9903493W WO 0101519 A1 WO0101519 A1 WO 0101519A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
electromagnetic interference
interference suppressor
antenna according
suppressor
Prior art date
Application number
PCT/JP1999/003493
Other languages
French (fr)
Japanese (ja)
Inventor
Kazuo Minegishi
Original Assignee
Tokin Corporation
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
Priority to JP10013877A priority Critical patent/JPH11214912A/en
Application filed by Tokin Corporation filed Critical Tokin Corporation
Priority to KR1020017001684A priority patent/KR20010106437A/en
Priority to CN99810190.7A priority patent/CN1315065A/en
Priority to AU42913/99A priority patent/AU4291399A/en
Priority to PCT/JP1999/003493 priority patent/WO2001001519A1/en
Priority to CA002339844A priority patent/CA2339844A1/en
Priority to EP99973945A priority patent/EP1111717A1/en
Priority to TW088111670A priority patent/TW466799B/en
Publication of WO2001001519A1 publication Critical patent/WO2001001519A1/en
Priority to NO20011014A priority patent/NO20011014L/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/001—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems for modifying the directional characteristic of an aerial
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/10—Telescopic elements
    • 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
    • H01Q1/243—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 with built-in antennas
    • H01Q1/244—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 with built-in antennas extendable from a housing along a given path
    • 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
    • H01Q1/245—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 with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas
    • 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

Definitions

  • the present invention relates to an antenna suitable for use in a portable wireless device.
  • FIG. 1 shows a conventional whip antenna of the top loading type.
  • This antenna is disclosed in Japanese Patent Application Laid-Open No. 8-84017, and is connected to a first antenna section 30 which is a whip element and a lower end of the first antenna section 30. It has a stop part 35, a sleeve part 36 provided at the upper end of the first antenna part 30, and a second antenna part 40 connected to the upper end of the sleeve part 36. are doing.
  • the second antenna part 40 includes a bobbin part 47, a helical coil 42 wound around the bobbin part 47, and a resin coating part covering the bobbin part 47 and the helical coil 42. 4 1 a.
  • the resin covering portion 41a is for improving the radiation efficiency and aesthetic appearance of the second antenna portion 40. Therefore, a material that does not adversely affect the antenna characteristics is used as much as possible for the resin-coated portion 4la.
  • the antenna characteristics generally indicate directivity and gain. For mobile phones, omnidirectionality and high gain are desired.
  • FIG. 2 shows a conventional whip antenna of the bottom loading type.
  • This antenna is disclosed in Japanese Unexamined Patent Publication No. Hei 8-503380, and includes a first antenna unit 50 which is a whip element held in a housing 51 of a telephone and a first antenna unit.
  • a second antenna portion 60 covering a lower end portion of the second antenna portion 50, and a stopper portion 65 provided at a lower end portion of the second antenna portion 60.
  • Helical coil 52 is provided in second antenna section 60.
  • the whip antennas in both Fig. 1 and Fig. 2 are only intended to improve the receiving sensitivity, and do not consider the effects of radio waves radiated from the antennas on the human body. In other words, the conventional portable radio does not take effective measures against radio waves of high frequency.
  • Japanese Unexamined Patent Application Publication No. Hei 9-466756 an antenna cover made of a radio wave absorbing material is attached by a shaft to a fixture provided near the base of the antenna.
  • Japanese Patent Laying-Open No. 2223888 discloses a technique for preventing an electromagnetic wave radiated from an antenna by hooking an antenna of a mobile phone on a hook provided on an electromagnetic wave prevention plate.
  • two or more linear radiating elements are arranged in close proximity, and a radio wave absorber is interposed between the linear radiating elements. An inserted antenna is disclosed.
  • Japanese Patent Application Laid-Open No. 63-37106 discloses an antenna in which the antenna body is covered with a radio wave absorber matched to the radar frequency.
  • Japanese Patent Application Laid-Open No. 50-20 / 1979 discloses that radio waves are absorbed by applying a paint obtained by mixing a light onto the surface of a structure.
  • Japanese Unexamined Patent Publication No. 5-228873 discloses a radio wave absorber having at least one unit of a heat treatment multilayer obtained by oxidizing a multilayer consisting of a resin layer and a metal layer as a unit film.
  • an object of the present invention is to provide a directional antenna capable of controlling the directivity of an antenna unit and reducing the influence of radio waves radiated from the antenna on a human body. Disclosure of the invention
  • an antenna characterized in that an electromagnetic interference suppressor using a composite magnetic material containing a soft magnetic material powder having an oxide film layer is provided in a part of the periphery.
  • the electromagnetic interference suppressor may cover one half of the periphery.
  • a first antenna unit slidably held on a housing of the wireless device; and a second antenna unit connected to an end of the first antenna unit, wherein the electromagnetic buffer suppressor is It may be provided in at least one of the first and second antenna units.
  • a holder that is slidably holding the first antenna unit, and is fixed to a part of the holder that is fixed to a housing of the wireless device; and that the first antenna unit is fixed to one end of the first antenna unit when the antenna is pulled out. And a sleeve portion having the second antenna portion connected to the other end of the first antenna portion.
  • the direction of the electromagnetic interference suppressor may be preset by fitting the part of the holder and the part of the stopper.
  • the direction of the electromagnetic interference suppressor may be set in advance by fitting the holder and the sleeve.
  • the second antenna section may be made of at least one of a rod type, a helical type, and a type utilizing dielectric resonance.
  • the electromagnetic interference suppressor may include an insulating covering portion that covers the electromagnetic interference suppressing body.
  • the electromagnetic interference suppressor may include an electromagnetic wave absorber.
  • the electromagnetic interference suppressor may be provided by one of sticking, fitting, and painting.
  • FIG. 1 is a diagram showing a conventional whip antenna of the top loading type.
  • FIG. 2 is a diagram showing a conventional whip antenna of the potom loading type.
  • FIG. 3 is a half sectional view showing a directional antenna according to one embodiment of the present invention.
  • FIG. 4 is an enlarged half sectional view of an intermediate portion of the directional antenna of FIG.
  • FIG. 5 is an enlarged half sectional view of a lower part of the directional antenna of FIG.
  • FIG. 6 is an enlarged partial cross-sectional view of the upper part of the directional antenna of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • the directional antenna includes a holder (antenna holding bracket) 4 fixed to a housing 1 of the portable wireless device, and a first antenna slidably held vertically by the holder 4.
  • the antenna part 10 is fixed to the lower end of the first antenna part 10 and is fitted to the holder part 4 when the antenna is pulled out, and the stopper part 5 serving as a power supply part to the first antenna part 10 is provided.
  • a sleeve part 6 attached to the upper end of the first antenna part 10 and fitted to the holder part 4 when the first antenna is housed, and a second antenna part provided at the upper end of the sleeve part 6.
  • the housing 1 is provided with an electromagnetic interference suppressor equivalent to the electromagnetic interference suppressor 3 provided in the first and second antenna units 10 and 20.
  • the first antenna section 10 includes a whip element 8, an electromagnetic interference suppressor 3 provided on the outer periphery of the whip element 8, A first covering portion 9a provided on the outer periphery of the body 3.
  • the whip element 8 not only Ti-Ni material but also ordinary stainless steel wire and Piano wire can be used.
  • the first covering portion 9a is formed by covering an insulating tube or molding with an insulating resin.
  • the second antenna unit 20 is connected to the upper end of the whip element 8.
  • the second antenna section 20 has a sleeve section 6 serving as a feeding section and a helical coil 2 serving as an antenna when the antenna is housed.c
  • the helical coil 2 is a helical guide section. Wrapped around 7.
  • An electromagnetic interference suppressor 3 is provided outside the helical coil 2 and the helical guide portion 7. That is, the helical coil 2 and the helical guide portion 7 are covered with the electromagnetic interference suppressor 3 to block electromagnetic waves. Further, the electromagnetic interference suppressor 3 is covered with the insulating second covering portion 11a.
  • the second covering portion 11a may be provided by molding the electromagnetic interference suppressor 3 with an insulating resin, or a cap made of an insulating resin may be fitted on the electromagnetic interference suppressor 3. It may be provided by that. Thus, the antenna top portion 11 protected by the second covering portion 11a is formed.
  • the directional antenna is set so that the electromagnetic interference suppressor 3 always faces the human body when using a portable wireless device.
  • the structure that uniquely determines the direction of the electromagnetic interference suppressor 3 with respect to the holder part 4 is set in the fitting part between the holder part 4 and the stopper part 5 or the fitting part between the holder part 4 and the sleeve part 6. It is done by preparing. That is, assuming that the electromagnetic interference suppressors 3 are oriented in the same direction in the first antenna section 10 and the second antenna section 20, the orientation when the antenna is pulled out is the holder part 4 and the stopper. It can be determined by the fitting state of the holder part 4 and the sleeve part 6 when the antenna is housed. That is, the direction of the electromagnetic interference suppressor 3 can be set to a predetermined direction by combining each fitting form with a different shape such as a jigsaw puzzle.
  • the electromagnetic interference suppressor 3 may be, for example, “trade name;“ BUSTA RAID ”” manufactured and sold by Tokin Co., Ltd. "Busta Raid”
  • the technology relating to the above is described in detail in Japanese Patent Application Laid-Open No. 9-93034.
  • the electromagnetic interference suppressor described in this publication is a soft magnetic powder that has a magnetostriction constant that is not zero and is processed into a flat shape, and whose average thickness after processing is the desired operating frequency of the composite magnetic material.
  • Composite material that can control high-frequency magnetic permeability over a wide range by using soft magnetic powder with at least an oxide film layer on its surface as a dielectric layer and a combination of annealing treatment.
  • the present invention is effective in suppressing electromagnetic wave interference.
  • the electromagnetic interference suppressor 3 may have an electromagnetic wave absorber.
  • the sleeve 15 is provided with an element 15 by a method such as molding or press fitting.
  • a helical guide portion 7 formed by molding or the like is fitted into the element 15 by press-fitting or screwing.
  • a helical coil 2 is wound around the helical guide 7.
  • the helical coil 2 is further wound around the sleeve portion 6 and connected by any one of press-fitting, soldering, and screwing.
  • An electromagnetic interference suppressor 3 is provided on a half surface on the circumference of the helical coil 2 wound around the helical guide portion 7. Further, in order to improve the protection and appearance of the internal components, a second covering portion 11a is provided, and a second antenna portion 20 is formed.
  • an electromagnetic interference suppressor 3 is provided around the whip element 8. Furthermore, a first covering portion 9a is provided to protect them from above, and a first antenna portion 10 is formed. Then, the upper end of the first antenna unit 10 is fitted and fixed to the lower end of the sleeve 6.
  • the stopper 5 is inserted. Furthermore, the lower end portion of the whip element 8 is deformed to form an enlarged portion, and the whip element 8 is press-fitted into the stopper portion 5 to fix them together.
  • the above-described directional antenna has a particularly simple structure that has lost its directivity on one side. Therefore, by directing the part where the directivity is lost toward the human body, It is possible to reduce the effect on the human body.
  • the electromagnetic interference suppressor 3 may be provided in only one of the first and second antenna units 10.
  • the second antenna section 20 can be implemented as a rod-shaped type, or can be implemented as a type utilizing dielectric resonance.
  • the directional antenna according to the present invention is useful as an antenna of a wireless device such as a mobile phone.

Abstract

A directional antenna, on a periphery or one side of which is provided an electromagnetic interference suppressor (3) composed of the magnetic compound that contains oxide-coated magnetically soft powder. This antenna is suitable for a structure in which a first antenna (10) held slidingly in the case of a mobile unit is connected with a second antenna (20) on the end of the first antenna.

Description

明 細 書 指向性アンテナ 技術分野  Description Directional antenna Technical field
この発明は、 携帯無線機に使用するのに適したアンテナに関する。 背景技術  The present invention relates to an antenna suitable for use in a portable wireless device. Background art
近年、 携帯電話機等の携帯無線機の普及が益々加速している。 これら携帯無 線機には、 電波の送受信のために特定の周波数が割り当てられている。 その周 波数は高周波化の傾向にある。 この電波の高周波化は携帯無線機を使用する人 の体へ悪影響を与える虞があるにもかかわらず、 一般的な携帯電話機では、 筐 体の外部に一部が突出するタイプのアンテナが用いられている。 これは、 送受 信感度向上を第一の目的としているからである。  2. Description of the Related Art In recent years, the spread of portable wireless devices such as portable telephones has been increasingly accelerated. These portable radios are assigned specific frequencies for transmitting and receiving radio waves. The frequency tends to be higher. Despite the possibility that this high frequency of radio waves may adversely affect the body of a person using the portable radio, a general mobile phone uses an antenna of a type that partially protrudes outside the housing. ing. This is because the primary objective is to improve transmission and reception sensitivity.
第 1図はトップローディングタイプの従来のホイップアンテナを示す。 この アンテナは、 特開平 8— 8 4 0 1 7号公報に開示されており、 ホイップエレメ ントである第 1のアンテナ部 3 0と、 この第 1のアンテナ部 3 0の下端に接続 されているストツバ一部 3 5と、 第 1のアンテナ部 3 0の上端部に設けられて いるスリーブ部 3 6と、 スリーブ部 3 6の上端に接続されている第 2のアンテ ナ部 4 0とを有している。 第 2のアンテナ部 4 0は、 ボビン部 4 7と、 このボ ビン部 4 7に巻着されているヘリカルコイル 4 2と、 ボビン部 4 7及びヘリ力 ルコイル 4 2を覆っている樹脂被覆部 4 1 aとを有している。 樹脂被覆部 4 1 aは第 2のアンテナ部 4 0に放射効率と美観と向上させるためのものである。 したがって、 樹脂被覆部 4 l aには、 極力、 アンテナ特性に悪影響を及ぼさな い材料を採用している。 なおアンテナ特性とは、 一般に指向性や利得を示し、 携帯電話機にとっては無指向性、 高利得が希望されている。  FIG. 1 shows a conventional whip antenna of the top loading type. This antenna is disclosed in Japanese Patent Application Laid-Open No. 8-84017, and is connected to a first antenna section 30 which is a whip element and a lower end of the first antenna section 30. It has a stop part 35, a sleeve part 36 provided at the upper end of the first antenna part 30, and a second antenna part 40 connected to the upper end of the sleeve part 36. are doing. The second antenna part 40 includes a bobbin part 47, a helical coil 42 wound around the bobbin part 47, and a resin coating part covering the bobbin part 47 and the helical coil 42. 4 1 a. The resin covering portion 41a is for improving the radiation efficiency and aesthetic appearance of the second antenna portion 40. Therefore, a material that does not adversely affect the antenna characteristics is used as much as possible for the resin-coated portion 4la. The antenna characteristics generally indicate directivity and gain. For mobile phones, omnidirectionality and high gain are desired.
また、第 2図はボトムローデイングタイプの従来のホイップアンテナを示す。 このアンテナは、 特表平 8— 5 0 3 8 3 0号公報に開示されており、 電話機の 筐体 5 1に保持されているホイップエレメン トである第 1のアンテナ部 5 0と， 第 1のアンテナ部 5 0の下端部を覆っている第 2のアンテナ部 6 0と、 第 2の アンテナ部 6 0の下端部に設けられているストッパ一部 6 5とを有している。 第 2のアンテナ部 6 0にはヘリカルコイル 5 2が設けられている。 FIG. 2 shows a conventional whip antenna of the bottom loading type. This antenna is disclosed in Japanese Unexamined Patent Publication No. Hei 8-503380, and includes a first antenna unit 50 which is a whip element held in a housing 51 of a telephone and a first antenna unit. A second antenna portion 60 covering a lower end portion of the second antenna portion 50, and a stopper portion 65 provided at a lower end portion of the second antenna portion 60. Helical coil 52 is provided in second antenna section 60.
しかし、 第 1図及び第 2図のいずれのホイップアンテナも、 受信感度向上を 主目的としたものにすぎず、 アンテナから放射される電波の人体への影響につ いては考慮していない。 即ち、 従来の携帯無線機には、 高周波化された電波に 対する有効な対策が施されていない。  However, the whip antennas in both Fig. 1 and Fig. 2 are only intended to improve the receiving sensitivity, and do not consider the effects of radio waves radiated from the antennas on the human body. In other words, the conventional portable radio does not take effective measures against radio waves of high frequency.
さらに、 アンテナに関連した他の技術を下記に列挙して簡単に説明する。 特開平 9一 4 6 7 5 6号公報においては、 アンテナの根元付近に設けた取り 付け具に電波吸収材よりなるアンテナカバーが軸によって装着されている。 特開平 2 2 3 8 8 8号公報は、 電磁波防止板に設けたフックに携帯電話のァ ンテナを引っかけ、アンテナから放射される電磁波を防ぐ技術を開示している。 実願昭 5 9— 2 2 5 9 8号のマイクロフィルムには、 2本以上の線状放射ェ レメントをごく接近してならべて配置し、 この線状放射エレメント間に電波吸 収体を介挿した空中線を開示されている。  In addition, other technologies related to antennas are listed below and briefly described. In Japanese Unexamined Patent Application Publication No. Hei 9-466756, an antenna cover made of a radio wave absorbing material is attached by a shaft to a fixture provided near the base of the antenna. Japanese Patent Laying-Open No. 2223888 discloses a technique for preventing an electromagnetic wave radiated from an antenna by hooking an antenna of a mobile phone on a hook provided on an electromagnetic wave prevention plate. On the microfilm of Japanese Utility Model Application No. Sho 59-222-598, two or more linear radiating elements are arranged in close proximity, and a radio wave absorber is interposed between the linear radiating elements. An inserted antenna is disclosed.
特開昭 6 4— 3 7 1 0 6号公報には、 空中線本体をレーダ周波数に整合した 電波吸収体で被覆した空中線が開示されている。  Japanese Patent Application Laid-Open No. 63-37106 discloses an antenna in which the antenna body is covered with a radio wave absorber matched to the radar frequency.
特開昭 5 0 - 2 0号公報には、 フヱライ トを混合してなる塗料を構造物の表 面に塗布することによって電波吸収をすることが開示されている。  Japanese Patent Application Laid-Open No. 50-20 / 1979 discloses that radio waves are absorbed by applying a paint obtained by mixing a light onto the surface of a structure.
特開平 5— 2 2 8 8 7 3号公報は、 樹脂層と金属層とからなる複層を酸化さ せてなる熱処理複層を単位膜として一単位以上有する電波吸収体を開示してい この発明の目的は、 上述に鑑み、 アンテナ部の指向性を制御し、 アンテナか ら放射される電波の人体への影響を低減することが可能な指向性アンテナを提 供することにある。 発明の開示 Japanese Unexamined Patent Publication No. 5-228873 discloses a radio wave absorber having at least one unit of a heat treatment multilayer obtained by oxidizing a multilayer consisting of a resin layer and a metal layer as a unit film. In view of the above, an object of the present invention is to provide a directional antenna capable of controlling the directivity of an antenna unit and reducing the influence of radio waves radiated from the antenna on a human body. Disclosure of the invention
この発明によれば、 酸化膜層をもつ軟磁性体粉末を含む複合磁性体を用いた 電磁干渉抑制体を周囲の一部に備えたことを特徴とするアンテナが得られる。 前記電磁干渉抑制体が前記周囲の片側半分を覆っていてもよい。  According to the present invention, there is provided an antenna characterized in that an electromagnetic interference suppressor using a composite magnetic material containing a soft magnetic material powder having an oxide film layer is provided in a part of the periphery. The electromagnetic interference suppressor may cover one half of the periphery.
無線機の筐体に対し摺動自在に保持される第 1のアンテナ部と、 前記第 1の アンテナ部の端部に接続された第 2のアンテナ部とを含み、 前記電磁緩衝抑制 体は前記第 1及び前記第 2のアンテナ部の少なくとも一方に備えられていても よい。  A first antenna unit slidably held on a housing of the wireless device; and a second antenna unit connected to an end of the first antenna unit, wherein the electromagnetic buffer suppressor is It may be provided in at least one of the first and second antenna units.
前記第 1のアンテナ部を摺動自在に保持し、 無線機の筐体に固着されるホル ダ一部と、 前記第 1のアンテナ部の一端に固着され、 アンテナ引出時に前記第 1のアンテナ部への給電部分となるストツバ一部と、 前記第 1のアンテナ部の 他端に前記第 2のアンテナ部を接続したスリーブ部とを含んでもよい。  A holder that is slidably holding the first antenna unit, and is fixed to a part of the holder that is fixed to a housing of the wireless device; and that the first antenna unit is fixed to one end of the first antenna unit when the antenna is pulled out. And a sleeve portion having the second antenna portion connected to the other end of the first antenna portion.
前記電磁干渉抑制体の向きが、 前記ホルダ一部と前記ストツバ一部との嵌合 により、 予め設定されていてもよい。  The direction of the electromagnetic interference suppressor may be preset by fitting the part of the holder and the part of the stopper.
前記電磁干渉抑制体の向きが、 前記ホルダー部と前記スリーブ部との嵌合に より、 予め設定されていてもよい。  The direction of the electromagnetic interference suppressor may be set in advance by fitting the holder and the sleeve.
前記第 2のアンテナ部は、 棒状タイプ、 ヘリカルタイプ、 誘電体共振を利用 するタイプのうちの少なくとも一種からなってもよい。  The second antenna section may be made of at least one of a rod type, a helical type, and a type utilizing dielectric resonance.
前記電磁干渉抑制体を覆った絶縁性の被覆部を有していてもよい。  The electromagnetic interference suppressor may include an insulating covering portion that covers the electromagnetic interference suppressing body.
前記電磁干渉抑制体が電磁波吸収体を有してもよい。  The electromagnetic interference suppressor may include an electromagnetic wave absorber.
前記電磁干渉抑制体は、 貼り付け、 嵌合、 及び塗装のうちの一種によって設 けられてもよい。 図面の簡単な説明  The electromagnetic interference suppressor may be provided by one of sticking, fitting, and painting. BRIEF DESCRIPTION OF THE FIGURES
第 1図は、 トップローデイングタイプの従来のホイップアンテナを示す図で ある。 第 2図は、 ポトムローディングタィプの従来のホイップアンテナを示す図で め 。 FIG. 1 is a diagram showing a conventional whip antenna of the top loading type. FIG. 2 is a diagram showing a conventional whip antenna of the potom loading type.
第 3図は、 この発明の一実施例に係る指向性アンテナを示した半断面図であ る。  FIG. 3 is a half sectional view showing a directional antenna according to one embodiment of the present invention.
第 4図は、 第 3図の指向性アンテナの中間部の拡大半断面図である。  FIG. 4 is an enlarged half sectional view of an intermediate portion of the directional antenna of FIG.
第 5図は、 第 3図の指向性アンテナの下部の拡大半断面図である。  FIG. 5 is an enlarged half sectional view of a lower part of the directional antenna of FIG.
第 6図は、 第 3図の指向性アンテナの上部の拡大部分断面図である。 発明を実施するための最良の形態  FIG. 6 is an enlarged partial cross-sectional view of the upper part of the directional antenna of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
添付の図面にしたがって、 この発明の一実施例に係る指向性アンテナを説明 する。  A directional antenna according to one embodiment of the present invention will be described with reference to the accompanying drawings.
第 3図を参照すると、 この指向性アンテナは、 携帯無線機の筐体 1に固着さ れるホルダー部 （アンテナ保持金具） 4と、 ホルダー部 4に上下に摺動自在に 保持された第 1のアンテナ部 1 0と、 第 1のアンテナ部 1 0の下端部に固着さ れ、 アンテナ引出時にはホルダ一部 4に嵌合するとともに第 1のアンテナ部 1 0への給電部となるストツバ一部 5と、 第 1のアンテナ部 1 0の上端部に取り 付けられ、第 1のアンテナ収納時にはホルダ一部 4に嵌合するスリーブ部 6と、 スリーブ部 6の上端部に設けた第 2のアンテナ部 2 0と、 第 1及び第 2のアン テナ部 1 0 , 2 0の各々の円周上の所望箇所に電磁波を遮断するように設けた 電磁干渉抑制体 3とを有している。 ここでは、 電磁干渉抑制体 3は第 1及び第 2のアンテナ部 1 0 , 2 0の円周上の片側半分に付設されている。 電磁干渉抑 制体 3の付設は、 貼り付け、 被嵌、 もしくは塗装によって実施され得る。 なお、 図示しないが、 筐体 1には第 1及び第 2のアンテナ部 1 0 , 2 0に設けた電磁 干渉抑制体 3と同等な電磁干渉抑制体が設けられている。  Referring to FIG. 3, the directional antenna includes a holder (antenna holding bracket) 4 fixed to a housing 1 of the portable wireless device, and a first antenna slidably held vertically by the holder 4. The antenna part 10 is fixed to the lower end of the first antenna part 10 and is fitted to the holder part 4 when the antenna is pulled out, and the stopper part 5 serving as a power supply part to the first antenna part 10 is provided. And a sleeve part 6 attached to the upper end of the first antenna part 10 and fitted to the holder part 4 when the first antenna is housed, and a second antenna part provided at the upper end of the sleeve part 6. 20 and an electromagnetic interference suppressor 3 provided at a desired position on the circumference of each of the first and second antenna portions 10 and 20 so as to block electromagnetic waves. Here, the electromagnetic interference suppressor 3 is provided on one half of the circumference of the first and second antenna units 10 and 20. The attachment of the electromagnetic interference suppressor 3 can be performed by sticking, fitting, or painting. Although not shown, the housing 1 is provided with an electromagnetic interference suppressor equivalent to the electromagnetic interference suppressor 3 provided in the first and second antenna units 10 and 20.
第 1のアンテナ部 1 0は、 第 4図及び第 5図に詳細を示したように、 ホイッ プエレメント 8と、 このホイップエレメント 8の外周に設けた電磁干渉抑制体 3と、 この電磁干渉抑制体 3の外周上に設けた第 1の被覆部 9 aとを有してい る。 ホイップエレメント 8には、 T i— N i材の他、 通常のステンレス線、 ピ ァノ線も使用可能である。 第 1の被覆部 9 aは、 絶縁性のチューブを被せるこ とや絶縁性の樹脂による成形で形成される。 As shown in detail in FIGS. 4 and 5, the first antenna section 10 includes a whip element 8, an electromagnetic interference suppressor 3 provided on the outer periphery of the whip element 8, A first covering portion 9a provided on the outer periphery of the body 3. You. As the whip element 8, not only Ti-Ni material but also ordinary stainless steel wire and Piano wire can be used. The first covering portion 9a is formed by covering an insulating tube or molding with an insulating resin.
ホイップエレメント 8の上端には、第 2のアンテナ部 2 0が接続されている。 この第 2のアンテナ部 2 0は、 第 6図にも示すように、 給電部となるスリーブ 部 6とアンテナ収納時にアンテナとして働くヘリカルコイル 2とを有している c ヘリカルコイル 2はヘリカルガイ ド部 7の周囲に巻着されている。 ヘリカルコ ィル 2及びヘリカルガイ ド部 7の外側には、 電磁干渉抑制体 3が設けられてい る。 即ち、 ヘリカルコイル 2とへリカルガイ ド部 7を電磁干渉抑制体 3によつ て覆い、 電磁波を遮断するように構成している。 さらに、 電磁干渉抑制体 3は 絶縁性の第 2の被覆部 1 1 aによって覆われている。 第 2の被覆部 1 1 aは、 電磁干渉抑制体 3を絶縁性樹脂によりモールドすることにより備えられてもよ いし、 絶縁性の樹脂にて作ったキヤップを電磁干渉抑制体 3に被嵌させること により備えられてもよい。 こうして、 第 2の被覆部 1 1 aによって保護された アンテナトップ部 1 1が構成される。  The second antenna unit 20 is connected to the upper end of the whip element 8. As shown in FIG. 6, the second antenna section 20 has a sleeve section 6 serving as a feeding section and a helical coil 2 serving as an antenna when the antenna is housed.c The helical coil 2 is a helical guide section. Wrapped around 7. An electromagnetic interference suppressor 3 is provided outside the helical coil 2 and the helical guide portion 7. That is, the helical coil 2 and the helical guide portion 7 are covered with the electromagnetic interference suppressor 3 to block electromagnetic waves. Further, the electromagnetic interference suppressor 3 is covered with the insulating second covering portion 11a. The second covering portion 11a may be provided by molding the electromagnetic interference suppressor 3 with an insulating resin, or a cap made of an insulating resin may be fitted on the electromagnetic interference suppressor 3. It may be provided by that. Thus, the antenna top portion 11 protected by the second covering portion 11a is formed.
さらに、 この指向性アンテナは、 携帯無線機を使用するときに、 電磁干渉抑 制体 3が常に人体側を向くように設定されている。 この設定は、 ホルダー部 4 とストツバ一部 5との嵌合部又はホルダー部 4とスリーブ部 6との嵌合部に、 ホルダー部 4に対する電磁干渉抑制体 3の向きを一義的に決める構造を備える ことにより行われている。 即ち、 第 1のアンテナ部 1 0と第 2のアンテナ部 2 0とで電磁干渉抑制体 3が同一方向を向いていると仮定した場合、 アンテナ引 出時の向きはホルダ一部 4とストツバ一部 5との嵌合状態、 アンテナ収納時は ホルダ一部 4とスリーブ部 6の嵌合状態により決定することができる。つまり、 それぞれの嵌合形態をジグソーパズルの様な異形の組み合わせにすることによ り、 電磁干渉抑制体 3の方向を所定方向に設定できる。  Furthermore, the directional antenna is set so that the electromagnetic interference suppressor 3 always faces the human body when using a portable wireless device. In this setting, the structure that uniquely determines the direction of the electromagnetic interference suppressor 3 with respect to the holder part 4 is set in the fitting part between the holder part 4 and the stopper part 5 or the fitting part between the holder part 4 and the sleeve part 6. It is done by preparing. That is, assuming that the electromagnetic interference suppressors 3 are oriented in the same direction in the first antenna section 10 and the second antenna section 20, the orientation when the antenna is pulled out is the holder part 4 and the stopper. It can be determined by the fitting state of the holder part 4 and the sleeve part 6 when the antenna is housed. That is, the direction of the electromagnetic interference suppressor 3 can be set to a predetermined direction by combining each fitting form with a different shape such as a jigsaw puzzle.
なお、 電磁干渉抑制体 3は、 例えば、 株式会社トーキンにて生産 '販売され ている 「商品名 ； "バスタ レイ ド"」 を採用することができる。 「バスタ レイ ド」 に関わる技術は、 特開平 9— 9 3 0 3 4号公報に詳細に記載されている。 この 公報に記載されている電磁干渉抑制体は、 磁歪定数がゼロでない値をもち偏平 状に加工された軟磁性体粉末であって加工後のその平均厚さが所望の複合磁性 体の使用周波数における表皮深さよりも小さく、 誘電体層として少なくともそ の表面に酸化膜層をもつ軟磁性体粉末を用い、 さらに焼鈍処理を組み合わせる ことで、高周波透磁率特性を広い範囲で、制御可能とした複合磁性体を提供し、 さらに残留歪み量の異なる複数の複合磁性体を用いることで電磁波の干渉抑制 に有効なものである。 なお、 電磁干渉抑制体 3は電磁波吸収体を有するもので もよい。 The electromagnetic interference suppressor 3 may be, for example, “trade name;“ BUSTA RAID ”” manufactured and sold by Tokin Co., Ltd. "Busta Raid" The technology relating to the above is described in detail in Japanese Patent Application Laid-Open No. 9-93034. The electromagnetic interference suppressor described in this publication is a soft magnetic powder that has a magnetostriction constant that is not zero and is processed into a flat shape, and whose average thickness after processing is the desired operating frequency of the composite magnetic material. Composite material that can control high-frequency magnetic permeability over a wide range by using soft magnetic powder with at least an oxide film layer on its surface as a dielectric layer and a combination of annealing treatment. By providing a magnetic material and using a plurality of composite magnetic materials having different residual strains, the present invention is effective in suppressing electromagnetic wave interference. Note that the electromagnetic interference suppressor 3 may have an electromagnetic wave absorber.
次に、 上述した指向性アンテナの製造方法について説明する。  Next, a method for manufacturing the above-described directional antenna will be described.
スリーブ部 6に成形または圧入等の方法によりエレメン ト 1 5を備える。 こ のエレメント 1 5に、 成形等により形成されたヘリカルガイ ド部 7を圧入また はねじ込みにより嵌合させる。 ヘリカルガイ ド部 7にはヘリカルコイル 2が巻 回される。 ヘリカルコイル 2は、 さらにスリーブ部 6に巻き付けられ、 圧入、 半田付、 ねじ込みの何れかの方法により接続される。 このへリカルガイ ド部 7 に巻かれたヘリカルコイル 2の円周上の半面に、 電磁干渉抑制体 3を備える。 さらに、 内部の部品の保護と外観をよくするために、 第 2の被覆部 1 1 aを備 え、 第 2のアンテナ部 2 0を形成する。  The sleeve 15 is provided with an element 15 by a method such as molding or press fitting. A helical guide portion 7 formed by molding or the like is fitted into the element 15 by press-fitting or screwing. A helical coil 2 is wound around the helical guide 7. The helical coil 2 is further wound around the sleeve portion 6 and connected by any one of press-fitting, soldering, and screwing. An electromagnetic interference suppressor 3 is provided on a half surface on the circumference of the helical coil 2 wound around the helical guide portion 7. Further, in order to improve the protection and appearance of the internal components, a second covering portion 11a is provided, and a second antenna portion 20 is formed.
また、 ホイップエレメン ト 8の周りに電磁干渉抑制体 3を備える。 さらに、 その上からこれらを保護すべく第 1の被覆部 9 aを備え、 第 1のアンテナ部 1 0を形成する。 そして、 この第 1のアンテナ部 1 0の上端部をスリーブ 6の下 端部に嵌合固定する。  Further, an electromagnetic interference suppressor 3 is provided around the whip element 8. Furthermore, a first covering portion 9a is provided to protect them from above, and a first antenna portion 10 is formed. Then, the upper end of the first antenna unit 10 is fitted and fixed to the lower end of the sleeve 6.
次に、 第 1のアンテナ 1 0にホルダー部 4を挿入した後で、 ストッパー部 5 を挿入する。 さらに、 ホイップエレメン ト 8の下端部を変形させて拡大部を設 け、 ストッパー部 5に圧入して両者を固着する。  Next, after inserting the holder 4 into the first antenna 10, the stopper 5 is inserted. Furthermore, the lower end portion of the whip element 8 is deformed to form an enlarged portion, and the whip element 8 is press-fitted into the stopper portion 5 to fix them together.
上述した指向性アンテナは、 簡単な構造によって、 片側の指向性を特に崩し ている。 したがって、 この指向性の崩れた部分を人体側へ向けることにより、 人体への影響を軽減することが可能である。 The above-described directional antenna has a particularly simple structure that has lost its directivity on one side. Therefore, by directing the part where the directivity is lost toward the human body, It is possible to reduce the effect on the human body.
なお、 電磁干渉抑制体 3は第 1及び第 2のアンテナ部 1 0 . 2 0のいずれか 一方のみに備えられてもよい。 第 2のアンテナ部 2 0は、 棒状タイプでも実施 できるし、 また誘電体共振を利用するタイプでも実施できる。 産業上の利用可能性  Note that the electromagnetic interference suppressor 3 may be provided in only one of the first and second antenna units 10. The second antenna section 20 can be implemented as a rod-shaped type, or can be implemented as a type utilizing dielectric resonance. Industrial applicability
以上のように、 本発明に係る指向性アンテナは、 携帯電話機等の無線機器の アンテナとして有用である。  As described above, the directional antenna according to the present invention is useful as an antenna of a wireless device such as a mobile phone.

Claims

請 求 の 範 囲 The scope of the claims
1 . 酸化膜層をもつ軟磁性体粉末を含む複合磁性体を用いた電磁干渉抑制体を 周囲の一部に備えたことを特徴とするアンテナ。 1. An antenna characterized in that an electromagnetic interference suppressor using a composite magnetic material including a soft magnetic material powder having an oxide film layer is provided on a part of the periphery.
2 . 請求項 1記載のアンテナにおいて、 前記電磁干渉抑制体が前記周囲の片側 半分を覆っていることを特徴とするアンテナ。  2. The antenna according to claim 1, wherein the electromagnetic interference suppressor covers one half of the periphery.
3 . 請求項 1又は 2記載のアンテナにおいて、 無線機の筐体に対し摺動自在に 保持される第 1のアンテナ部と、 前記第 1のアンテナ部の端部に接続された第 2のアンテナ部とを含み、 前記電磁緩衝抑制体は前記第 1及び前記第 2のアン テナ部の少なくとも一方に備えられていることを特徴とするアンテナ。  3. The antenna according to claim 1, wherein the first antenna portion is slidably held in a housing of the wireless device, and the second antenna is connected to an end of the first antenna portion. An antenna, wherein the electromagnetic buffer suppressor is provided in at least one of the first and second antenna units.
4. 請求項 3記載のアンテナにおいて、 前記第 1のアンテナ部を摺動自在に保 持し、 無線機の筐体に固着されるホルダ一部と、 前記第 1のアンテナ部の一端 に固着され、 アンテナ引出時に前記第 1のアンテナ部への給電部分となるス ト ツバ一部と、 前記第 1のアンテナ部の他端に前記第 2のアンテナ部を接続した スリ一ブ部とを含むことを特徴とするアンテナ。  4. The antenna according to claim 3, wherein the first antenna unit is slidably held, and a part of a holder fixed to a housing of the wireless device and one end of the first antenna unit are fixed. A part of the tongue serving as a power supply part to the first antenna part when the antenna is pulled out, and a sleeve part having the other end of the first antenna part connected to the second antenna part. Antenna.
5 . 請求項 4記載のアンテナにおいて、 前記電磁干渉抑制体の向きが、 前記ホ ルダ一部と前記ストツバ一部との嵌合により、 予め設定されていることを特徴 とするアンテナ。  5. The antenna according to claim 4, wherein the direction of the electromagnetic interference suppressor is set in advance by fitting the holder part and the stop part.
6 . 請求項 4記載のアンテナにおいて、 前記電磁干渉抑制体の向きが、 前記ホ ルダ一部と前記スリーブ部との嵌合により、 予め設定されていることを特徴と するアンテナ。  6. The antenna according to claim 4, wherein the direction of the electromagnetic interference suppressor is set in advance by fitting the part of the holder and the sleeve part.
7 . 請求項 3— 6のいずれかに記載のアンテナにおいて、 前記第 2のアンテナ 部は、 棒状タイプ、 ヘリカルタイプ、 誘電体共振を利用するタイプのうちの少 なくとも一種からなることを特徴とするアンテナ。  7. The antenna according to any one of claims 3 to 6, wherein the second antenna unit is made of at least one of a rod type, a helical type, and a type using dielectric resonance. Antenna to do.
8 . 請求項 1一 7のいずれかに記載のアンテナにおいて、 前記電磁干渉抑制体 を覆った絶縁性の被覆部を有していることを特徴とするアンテナ。  8. The antenna according to claim 17, further comprising an insulating covering portion covering the electromagnetic interference suppressing body.
9 . 請求項 1一 8のいずれかに記載のアンテナにおいて、 前記電磁干渉抑制体 が電磁波吸収体を有することを特徴とするアンテナ。 9. The antenna according to claim 11, wherein the electromagnetic interference suppressor is provided. Characterized by having an electromagnetic wave absorber.
1 0 . 請求項 1 一 9のいずれかに記載のアンテナにおいて、 前記電磁干渉抑制 体は、 貼り付け、 嵌合、 及び塗装のうちの一種によって設けられていることを 特徴とする携帯無線機用の指向性アンテナ。  10. The antenna according to claim 11, wherein the electromagnetic interference suppressor is provided by one of sticking, fitting, and painting. Directional antenna.
PCT/JP1999/003493 1998-01-27 1999-06-29 Directional antenna with electromagnetic interference suppressor WO2001001519A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP10013877A JPH11214912A (en) 1998-01-27 1998-01-27 Directional antenna
KR1020017001684A KR20010106437A (en) 1999-06-29 1999-06-29 Directional antenna with electromagnetic interference suppressor
CN99810190.7A CN1315065A (en) 1998-01-27 1999-06-29 directional antenna
AU42913/99A AU4291399A (en) 1998-01-27 1999-06-29 Directional antenna with electromagnetic interference suppressor
PCT/JP1999/003493 WO2001001519A1 (en) 1998-01-27 1999-06-29 Directional antenna with electromagnetic interference suppressor
CA002339844A CA2339844A1 (en) 1998-01-27 1999-06-29 Directional antenna
EP99973945A EP1111717A1 (en) 1998-01-27 1999-06-29 Directional antenna with electromagnetic interference suppressor
TW088111670A TW466799B (en) 1998-01-27 1999-07-09 Directional antenna
NO20011014A NO20011014L (en) 1998-01-27 2001-02-27 Directional antenna

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10013877A JPH11214912A (en) 1998-01-27 1998-01-27 Directional antenna
PCT/JP1999/003493 WO2001001519A1 (en) 1998-01-27 1999-06-29 Directional antenna with electromagnetic interference suppressor

Publications (1)

Publication Number Publication Date
WO2001001519A1 true WO2001001519A1 (en) 2001-01-04

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Country Status (8)

Country Link
EP (1) EP1111717A1 (en)
JP (1) JPH11214912A (en)
CN (1) CN1315065A (en)
AU (1) AU4291399A (en)
CA (1) CA2339844A1 (en)
NO (1) NO20011014L (en)
TW (1) TW466799B (en)
WO (1) WO2001001519A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0946756A (en) * 1995-07-29 1997-02-14 Toru Ito Antenna cover for portable telephone
JPH0993034A (en) * 1995-09-22 1997-04-04 Tokin Corp Compound magnetic substance, manufacture of the same and electromagnetic interference suppresser
JPH09294104A (en) * 1996-04-25 1997-11-11 Sony Corp Antenna system and portable radio equipment
JPH10512407A (en) * 1995-01-05 1998-11-24 ビッカート，ポール，フランシス Antenna for portable wireless communication device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10512407A (en) * 1995-01-05 1998-11-24 ビッカート，ポール，フランシス Antenna for portable wireless communication device
JPH0946756A (en) * 1995-07-29 1997-02-14 Toru Ito Antenna cover for portable telephone
JPH0993034A (en) * 1995-09-22 1997-04-04 Tokin Corp Compound magnetic substance, manufacture of the same and electromagnetic interference suppresser
JPH09294104A (en) * 1996-04-25 1997-11-11 Sony Corp Antenna system and portable radio equipment

Also Published As

Publication number Publication date
CN1315065A (en) 2001-09-26
TW466799B (en) 2001-12-01
NO20011014D0 (en) 2001-02-27
JPH11214912A (en) 1999-08-06
CA2339844A1 (en) 2001-01-04
AU4291399A (en) 2001-01-31
EP1111717A1 (en) 2001-06-27
NO20011014L (en) 2001-04-10

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