WO2001001519A1 - Antenne directionnelle a suppresseur d'interferences electromagnetiques - Google Patents

Antenne directionnelle a suppresseur d'interferences electromagnetiques Download PDF

Info

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
English (en)
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/ja
Application filed by Tokin Corporation filed Critical Tokin Corporation
Priority to CA002339844A priority patent/CA2339844A1/fr
Priority to CN99810190.7A priority patent/CN1315065A/zh
Priority to AU42913/99A priority patent/AU4291399A/en
Priority to PCT/JP1999/003493 priority patent/WO2001001519A1/fr
Priority to KR1020017001684A priority patent/KR20010106437A/ko
Priority to EP99973945A priority patent/EP1111717A1/fr
Priority to TW088111670A priority patent/TW466799B/zh
Publication of WO2001001519A1 publication Critical patent/WO2001001519A1/fr
Priority to NO20011014A priority patent/NO20011014L/no

Links

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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Aerials With Secondary Devices (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

L'invention porte sur une antenne directionnelle sur le côté ou à la périphérie de laquelle est disposé un suppresseur (3) d'interférences électromagnétiques fait d'un composé magnétique contenant de la poudre faiblement magnétique revêtue d'oxyde. Cette antenne est adaptée à des structures dans lesquelles une première antenne (10) coulissant dans le boîtier d'un élément mobile est reliée à une deuxième antenne (20) disposée à l'extrémité de la première (10).
PCT/JP1999/003493 1998-01-27 1999-06-29 Antenne directionnelle a suppresseur d'interferences electromagnetiques WO2001001519A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP10013877A JPH11214912A (ja) 1998-01-27 1998-01-27 指向性アンテナ
CA002339844A CA2339844A1 (fr) 1998-01-27 1999-06-29 Antenne directionnelle
CN99810190.7A CN1315065A (zh) 1998-01-27 1999-06-29 定向天线
AU42913/99A AU4291399A (en) 1998-01-27 1999-06-29 Directional antenna with electromagnetic interference suppressor
PCT/JP1999/003493 WO2001001519A1 (fr) 1998-01-27 1999-06-29 Antenne directionnelle a suppresseur d'interferences electromagnetiques
KR1020017001684A KR20010106437A (ko) 1999-06-29 1999-06-29 전자 간섭 억제체를 포함하는 지향성 안테나
EP99973945A EP1111717A1 (fr) 1998-01-27 1999-06-29 Antenne directionnelle a suppresseur d'interferences electromagnetiques
TW088111670A TW466799B (en) 1998-01-27 1999-07-09 Directional antenna
NO20011014A NO20011014L (no) 1998-01-27 2001-02-27 Retningsbestemt antenne

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10013877A JPH11214912A (ja) 1998-01-27 1998-01-27 指向性アンテナ
PCT/JP1999/003493 WO2001001519A1 (fr) 1998-01-27 1999-06-29 Antenne directionnelle a suppresseur d'interferences electromagnetiques

Publications (1)

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

Family

ID=26349736

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/003493 WO2001001519A1 (fr) 1998-01-27 1999-06-29 Antenne directionnelle a suppresseur d'interferences electromagnetiques

Country Status (8)

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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0946756A (ja) * 1995-07-29 1997-02-14 Toru Ito 携帯電話のアンテナカバー
JPH0993034A (ja) * 1995-09-22 1997-04-04 Tokin Corp 複合磁性体及びその製造方法ならびに電磁干渉抑制体
JPH09294104A (ja) * 1996-04-25 1997-11-11 Sony Corp アンテナ装置及び携帯無線機
JPH10512407A (ja) * 1995-01-05 1998-11-24 ビッカート，ポール，フランシス 携帯無線通信装置用アンテナ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10512407A (ja) * 1995-01-05 1998-11-24 ビッカート，ポール，フランシス 携帯無線通信装置用アンテナ
JPH0946756A (ja) * 1995-07-29 1997-02-14 Toru Ito 携帯電話のアンテナカバー
JPH0993034A (ja) * 1995-09-22 1997-04-04 Tokin Corp 複合磁性体及びその製造方法ならびに電磁干渉抑制体
JPH09294104A (ja) * 1996-04-25 1997-11-11 Sony Corp アンテナ装置及び携帯無線機

Also Published As

Publication number Publication date
NO20011014D0 (no) 2001-02-27
AU4291399A (en) 2001-01-31
CN1315065A (zh) 2001-09-26
EP1111717A1 (fr) 2001-06-27
CA2339844A1 (fr) 2001-01-04
TW466799B (en) 2001-12-01
JPH11214912A (ja) 1999-08-06
NO20011014L (no) 2001-04-10

Similar Documents

Publication Publication Date Title
KR100734353B1 (ko) 무선통신 단말기의 안테나 장치 및 무선통신 단말기
TWI249935B (en) Mobile phone with reduced specific absorption rate (SAR) of electromagnetic waves on human body
JPH10145898A (ja) ワイヤレス通信装置
EP2311142B1 (fr) Antenne en microruban pour dispositif de dissipation de rayonnement électromagnétique
WO1994022235A1 (fr) Dispositif de protection contre le rayonnement pour emetteur radio
WO1994019841A1 (fr) Ecran anti-rayonnement
JPWO2011010471A1 (ja) コイルアンテナとそれを用いた電子機器
EP2911243B1 (fr) Appareil électronique, et dispositif d'antenne
JPH04220851A (ja) コードレス電話装置
WO1996023327A1 (fr) Dispositif portatif de telecommunication a appareil a antenne assurant la protection contre les rayonnements
WO2001001519A1 (fr) Antenne directionnelle a suppresseur d'interferences electromagnetiques
WO2014017352A1 (fr) Dispositif d'antenne et dispositif de communication
TWM322074U (en) Full band sleeve monopole antenna with equivalent electrical length
KR20010106437A (ko) 전자 간섭 억제체를 포함하는 지향성 안테나
WO1998021778A1 (fr) Resonateur a commande du champ d'excitation
WO2002054539A1 (fr) Antenne pour apparail radio portable
KR20220136692A (ko) 무선전력전송용 방열 안테나, 이를 포함하는 무선전력전송용 방열 안테나 모듈 및 전자기기
JP2003505899A (ja) 移動通信システムに用いるアンテナおよびその製造方法
JP4037703B2 (ja) 内蔵アンテナ及び無線機
JP2001007619A (ja) 線状アンテナおよびそれを用いた無線機
JP2002217583A (ja) 高周波ノイズ抑制体
JP2003234594A (ja) 高性能な電磁波吸収体
JPH0344203A (ja) アンテナ
KR200288331Y1 (ko) 휴대용 무선통신기기의 헬리컬 안테나
JPH06232622A (ja) 携帯無線機のアンテナ装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 99810190.7

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA CN KR NO SG US VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

WWE Wipo information: entry into national phase

Ref document number: 42913/99

Country of ref document: AU

ENP Entry into the national phase

Ref document number: 2339844

Country of ref document: CA

Ref document number: 2339844

Country of ref document: CA

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 1020017001684

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 1999973945

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 09763307

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 1200100172

Country of ref document: VN

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWP Wipo information: published in national office

Ref document number: 1999973945

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1020017001684

Country of ref document: KR

WWW Wipo information: withdrawn in national office

Ref document number: 1999973945

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1020017001684

Country of ref document: KR