WO2005029642A1 - Antenne partagee multifrequence - Google Patents

Antenne partagee multifrequence Download PDF

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Publication number
WO2005029642A1
WO2005029642A1 PCT/JP2004/013762 JP2004013762W WO2005029642A1 WO 2005029642 A1 WO2005029642 A1 WO 2005029642A1 JP 2004013762 W JP2004013762 W JP 2004013762W WO 2005029642 A1 WO2005029642 A1 WO 2005029642A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
frequency
antenna element
feeding point
bent
Prior art date
Application number
PCT/JP2004/013762
Other languages
English (en)
Japanese (ja)
Inventor
Kazuo Sekiya
Shinichiro Kitano
Original Assignee
Anten 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
Application filed by Anten Corporation filed Critical Anten Corporation
Priority to JP2005514089A priority Critical patent/JPWO2005029642A1/ja
Publication of WO2005029642A1 publication Critical patent/WO2005029642A1/fr

Links

Classifications

    • 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
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • 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

Definitions

  • the present invention relates to a multi-frequency antenna, and more particularly, to a multi-frequency antenna built in a mobile phone or the like.
  • the present invention relates to a configuration method of a dual frequency antenna.
  • a portable device capable of accessing both an 800 MHz band mobile network and a 2. OGHz band WCDMA (Wideband Code Division Multiple Access) network is required.
  • a two-wire type antenna has been developed as shown in Fig. 12. This corresponds to each frequency by connecting two monopole elements 50 and 53 to the substrate 52 for the power supply circuits 51 and 54 and changing the length of the elements.
  • a dual-frequency antenna with an 800MHz 1Z4 wavelength monopole and a 2GHz 1Z4 wavelength monopole it is necessary to secure the space necessary to form two monopoles. That is, twice as much space is required, and since the two antennas 50 and 53 are independent, a switch circuit for switching the antennas is required, and the connection circuit is complicated.
  • the present invention provides a compact built-in antenna for use in mobile phones and the like, particularly a built-in antenna for dual frequency use in the 80 OMHz band and the 2.O GHz band, which has good return loss and radiation efficiency in view of a powerful problem.
  • the purpose is to:
  • claim 1 is an antenna shared by a plurality of frequency bands, wherein a printed wiring board having a feed point and one end are connected to the feed point.
  • the principle of the dual frequency antenna is that, for example, if a metal element such as a quarter-wave wire in the 800 MHz band is attached to a printed wiring board and fed, the metal element acts as a radiating element and operates the same as a 1Z4 wavelength monopole. .
  • the 1Z4 wavelength in the 800MHz band operates as a 3Z4 monopole in the 2GHz band which is close to the 3Z4 wavelength in the 2GHz band, it operates as a shared antenna for the 800MHz band and the 2GHz band.
  • the antenna of the present invention is configured such that the length of the antenna element is determined based on this principle, and the antenna element is bent in order to fit the antenna element in a narrow space as much as possible and to secure desired electric characteristics. .
  • the feeding point force is attached to the frequency adjustment plate during the distance of approximately 1Z3 of the total length of the antenna element, so that it can be used for two frequencies.
  • Claim 2 is an antenna shared by a plurality of frequency bands, wherein the printed wiring board provided with a feeding point, one end of which is connected to the feeding point, and which is bent so as to fit within a predetermined dimension.
  • the characteristic point of the antenna of the present invention is that in order to have a resonance point at two different frequencies, one of the feeding point force antenna elements is connected to a frequency adjusting sheet metal at a location of approximately 1Z3 of the entire length, Further, shorten the total length of the antenna element In other words, it is connected to the tip so that it can be used for two frequencies.
  • Claim 3 is characterized in that the antenna element is formed of any one of a linear material, a sheet metal, and a printed pattern formed on a dielectric substrate.
  • the antenna element may be made of a linear material such as a wire, or it may be processed into a thin sheet metal. Both may be connected by a through hole.
  • a fourth aspect of the present invention is characterized in that a part or the whole of the antenna element is embedded in the dielectric or is arranged on the surface of the dielectric.
  • the antenna element Since the antenna element is made of a thin, linear material or the like, it may be deformed or cut by an external force. Therefore, in the present invention, a part or the whole of the antenna element is buried in the dielectric or disposed on the surface so as to be hardly affected by external force.
  • a fifth aspect of the present invention is characterized in that the antenna element is formed on the surface of the dielectric by vapor deposition or adhesion.
  • a method of forming the antenna element on the surface of the dielectric there are a method of evaporating a material of the element and a method of bonding the element to the surface with an adhesive or the like.
  • the former method of vapor deposition is suitable for mass production, and the latter method of adhesion is suitable for small volume production.
  • the antenna element is bent and one frequency adjusting sheet metal is connected to a location of approximately 1Z3 of the total length of the element, it is a small and dual-frequency shared antenna. A working antenna can be realized.
  • the antenna element is bent and one frequency adjusting metal plate is connected to each of the location and the end of the element having a length of approximately 1Z3, the antenna operates as a small and two-frequency shared antenna. An antenna can be realized.
  • the antenna element is formed of any one of a linear material, a sheet metal, and a printed pattern formed on a dielectric substrate. Therefore, the variation of the manufacturing method can be widened. To increase the range of choice of manufacturing methods depending on the production volume Can do.
  • the antenna element is partially or wholly disposed inside the dielectric or on the surface of the dielectric, deformation and breakage due to external force can protect the antenna element. .
  • the antenna element is formed on the surface of the dielectric by vapor deposition or bonding, so that it is possible to provide two types of manufacturing methods suitable for mass production and for reducing the manufacturing cost. .
  • FIG. 1 (a) is an external perspective view of a mobile phone
  • FIG. 1 (b) is an enlarged perspective view of a part A in FIG. 1 (a) in which an antenna element is built in the mobile phone.
  • the mobile phone 10 houses therein the multi-frequency antenna 3 of the present invention connected to the feeding point 2 of the built-in board 1 as shown in FIG. 1 (b) (details will be described later).
  • FIG. 2 is a diagram showing the shape and configuration of the multi-frequency antenna 3 according to the first embodiment of the present invention.
  • FIG. 2 is a perspective view of the external shape of the multi-frequency antenna 3.
  • the built-in antenna element 6 is made of a linear metal, for example, a wire.
  • the elements 10 to 20 and a metal piece are used. It is configured with 4 and 5.
  • the shape of the antenna element 6 includes at least first to eleventh elements, and the first element 10 extends from the feeding point 2 in a direction substantially orthogonal to the one end surface 21 of the printed wiring board 1.
  • the second element 11 is bent upward at a substantially right angle from the end a of the first element 10, and the end b of the second element 11 also has a third element 12 folded back in parallel with the first element 10.
  • the fourth element 13 is bent and formed in a horizontal direction orthogonal to the first element 10 from the terminal end c of the third element 12.
  • a fifth element 14 is formed to bend from the end d of the element 13 so as to be parallel to the one end face 21 of the printed wiring board 1, and becomes parallel to the fourth element 13 from the end e of the fifth element 14.
  • the sixth element 15 is bent upward, and the seventh element 16 is bent back from the end f of the sixth element 15 in parallel with the fifth element 14, and the seventh element 15 is bent.
  • the terminal g force at the terminal 16 is also opposite to that of the third element 12 and the eighth element 17 is bent in a direction perpendicular to the one end surface 21 of the substrate 1.
  • the ninth element 18 is bent so as to be parallel to the element 16 of the seventh element, and the tenth element 19 is bent so that the end of the ninth element 18 is also parallel to the eighth element 17.
  • This tenth element Terminating j force DOO 19 also ninth E Remento 18 and so as to be parallel eleventh element 20 are bent and formed.
  • the metal piece 4 is provided on the third element 12, and the metal piece 5 is provided so as to straddle the ninth, tenth, and eleventh elements.
  • the number and position of the metal pieces are not limited to this figure.
  • the size of the antenna element 6 and the size of the substrate 1 are determined based on the principle of dual-frequency operation described later, the antenna element 6 is kept as small as possible in the air, and the desired electrical characteristics are obtained. In order to ensure the above, 11 elements are bent and configured. Adjustment is required after manufacturing to make the antenna match the desired frequency.
  • the antenna element 6 is bent and the metal piece 4 is connected to a location approximately 1Z3 of the total length of the element, or the metal piece 5 is connected to the tip, the antenna is small and shared by two frequencies. An antenna that operates as an antenna can be realized. Incidentally, only the metal piece 4 may be connected.
  • FIG. 3 is a diagram illustrating the operation principle of the present invention. The same components will be described with the same reference numerals.
  • the antenna element 6 connected to the feeding point 2 of the printed wiring board 1 is generally called a monopole antenna.
  • L resonates at a frequency where it is equal to the wavelength 1Z4, It is known that radio waves are radiated efficiently.
  • FIG. 3 (b) it is known that this antenna also becomes a resonance point even at a frequency where L is equal to the wavelength 3Z4, and that this antenna also becomes an antenna at this frequency.
  • the resonance frequency fl and f2 decrease when a metal piece is loaded at the tip.Feeding point force of the antenna If a piece of metal is loaded in the vicinity, only f2 can be lowered. In other words, fl and f2 can be changed by loading a metal piece on a point at approximately 1Z3 of the entire length of the antenna element 6 from the feeding point 2 of the antenna, or at the tip, or at both. Furthermore, in order to incorporate this antenna into a mobile phone or the like, it is necessary to have a shape that fits in the housing of the mobile phone. This is achieved by appropriately bending a metal piece.
  • FIG. 6 is a perspective view of the external shape of the multi-frequency antenna 3 according to the second embodiment of the present invention.
  • FIG. The same components are denoted by the same reference numerals, and duplicate description will be omitted. Since the antenna element 6 is made of a thin linear material or the like, it may be deformed or cut by an external force. Therefore, in the present embodiment, a part or the whole of the antenna element 6 is embedded in the dielectric 10 or arranged on the surface so as to be hardly affected by external force.
  • FIG. 7 is a perspective view of the external shape of a multi-frequency antenna 3 according to a third embodiment of the present invention.
  • the metal piece 4 is arranged at a position approximately 1Z3 of the antenna element 6 from the feeding point 2, and the metal piece is not connected to the tip of the antenna element 6.
  • the metal piece 4 is arranged at a position approximately 1Z3 from the feeding point 2 to the antenna element 6, and the metal piece 5 is also connected to the tip of the antenna element 6, so that the bending method of the antenna element 6 is described.
  • FIG. 7 (c) the bending method of the antenna element 6 is the same as in FIG.
  • FIG. 7 (d) shows a case where the bending method of the antenna element 6 is the same as that of FIG. 7 (a), and the shapes of the metal pieces 4 and 5 are enlarged.
  • FIG. 8 is a perspective view of the external shape of a multi-frequency antenna 3 according to a fourth embodiment of the present invention. The same components will be described with the same reference numerals.
  • FIG. 8 shows the multi-frequency antenna 3 of FIG.
  • the shape of the antenna element is the same as that in FIG.
  • FIG. 9 is a perspective view of an external shape of a multi-frequency antenna 3 according to a fifth embodiment of the present invention.
  • the same components have the same reference numbers.
  • the present embodiment is an example in which the multi-frequency antenna 3 is configured by a printed circuit board. That is, referring to FIG. 9A, a pattern 23, a pattern 27, and a pattern 22b are formed on the front surface of the double-sided substrate 21, and a pattern 25 and a pattern 22a are formed on the back surface. Connected by 26 and 22c. More specifically, pattern 23 corresponds to the first element, through hole 24 corresponds to the second element, pattern 25 corresponds to the third, fourth, and fifth elements, and through hole 26 corresponds to the sixth element.
  • the pattern 27 corresponds to the seventh and eighth elements.
  • Fig. 9 (b) is an enlargement of section B in Fig. 9 (a).
  • FIG. The coil 6 can be realized by connecting the pattern 22b on the front surface and the pattern 22a on the rear surface with through holes 22c.
  • the manufacturing method can be broadened in terms of the manufacturing method and can be manufactured.
  • the selection range of the manufacturing method can be widened depending on the production amount.
  • the antenna element 6 is disposed partially or entirely inside the dielectric member 10 or on the surface of the dielectric member 10, the antenna element can be protected from deformation or damage due to external force.
  • the antenna element 6 is formed on the surface of the dielectric 10 by vapor deposition or adhesion, it is possible to provide two types of manufacturing methods suitable for mass production and for reducing the manufacturing cost.
  • FIG. 10 is a diagram showing the shape and configuration of an antenna element 103 according to the sixth embodiment of the present invention.
  • the antenna element 103 is divided into eight parts, and each part is called an element and is electrically connected.
  • the built-in antenna element 10 3 linear metal, such as is constituted by wire, for the desired electrical properties securing and compact reduction, the element 110 forces et element 117, a coil 106, a frequency adjustment metal plate It comprises 104 and 105.
  • the shape of the antenna element 103 is constituted by at least first to eighth elements.
  • the first element 110 extends from the feeding point 102 in a direction substantially orthogonal to the one end surface 118 of the printed wiring board 1.
  • the second element 111 is formed to bend at a substantially right angle downward from the terminal end a of 110, and the third element 112 is bent back from the terminal end b of the second element 111 in parallel with the first element 110.
  • the fourth element 113 is bent in a horizontal direction orthogonal to the first element 110 from the end c of the third element 112, and the third element 112 is formed from the end d of the fourth element 113.
  • the fifth element 114 is bent so as to be parallel, and the sixth element 115 is bent upward from the terminal end e of the fifth element 114 so as to be parallel to the second element 111.
  • the seventh element 116 is bent and formed in parallel with the fifth element 114 from the end f of the sixth element 115, and the fourth element 113 is formed from the end g of the seventh element 116.
  • Anti An eighth element 117 is bent in the horizontal direction parallel to the one end surface 118 of the substrate 1 in the opposite direction, and the coil 6 extends in parallel with the seventh element 116 from the end h of the eighth element 117. It is bent.
  • the frequency adjusting sheet metal 104 is provided on the second element 111, and the frequency adjusting sheet metal 105 is provided on the end of the coil 106. Note that the number and position of the frequency adjusting sheet metal are not limited to this figure.
  • the size of the antenna element 103 and the size of the substrate 101 are determined based on the principle of dual-frequency operation to be described later, the antenna element 103 is housed in a space as small as possible, and desired electrical characteristics are obtained. In order to secure it, eight elements are bent and configured. Then, the terminal portion is collectively configured as a terminal portion. Further, in order to make the antenna match the desired frequency, adjustment is necessary after manufacturing. As one of the methods, it is possible to connect metal plates 104 and 105 having a predetermined area to predetermined positions of the antenna element 103. That is, by connecting a metal to the element, the return loss and the radiation efficiency change. Therefore, the area of the metal plate is made variable to match the optimum characteristics.
  • FIG. 11 is a perspective view of an external shape of an antenna element 103 according to a seventh embodiment of the present invention.
  • the antenna element is formed of an integrally formed sheet metal, and each point (a-h) is bent.
  • the feature of the present embodiment can be configured by forming a sheet metal with a mold and bending the sheet metal at points a, b, e, f, and h.
  • the coil 120 is formed by forming a coil.
  • FIG. 1 (a) is an external perspective view of a mobile phone, and (b) has an antenna element built into the mobile phone.
  • FIG. 2 is a diagram showing the shape and configuration of a multi-frequency antenna 3 according to a first embodiment of the present invention.
  • FIG. 3 (a) is a diagram illustrating the operation principle when the resonance point is 1Z4 wavelength, and (b) is a diagram illustrating the operation principle when the resonance point is 3Z4 wavelength.
  • FIG. 4 is a diagram illustrating the operation principle of the present invention.
  • FIG. 5 is a diagram illustrating the operation principle of the present invention.
  • FIG. 6 is a perspective view of an external shape of a multi-frequency antenna 3 according to a second embodiment of the present invention.
  • FIG. 7] (a)-(d) are perspective views of the appearance of a multi-frequency antenna 3 according to a third embodiment of the present invention.
  • FIG. 8 (a)-(d) is a perspective view of an appearance of a multi-frequency antenna 3 according to a fourth embodiment of the present invention.
  • FIG. 9 (a) is a perspective view of an external shape of a multi-frequency antenna 3 according to a fifth embodiment of the present invention
  • FIG. 9 (b) is an enlarged view of a portion B in FIG. 9 (a).
  • FIG. 10 is a view showing the shape and configuration of an antenna element 103 according to a sixth embodiment of the present invention.
  • FIG. 11 is a perspective view of an external shape of an antenna element 103 according to a seventh embodiment of the present invention.
  • FIG. 12 is a diagram illustrating the operation principle of a conventional dual-frequency antenna.

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

Abstract

L'invention concerne une antenne présentant de petites dimensions et de bonnes propriétés d'affaiblissement d'équilibrage et de rendement. Cette antenne se présente sous la forme d'une antenne intégrée, destinée à des téléphones portables ou analogues, en particulier une antenne intégrée partagée à deux fréquences, utilisée sur une bande 800 MHz et 2 GHz. L'élément antenne intégrée (6), en métal linéaire, un fil par exemple, comprend divers éléments (10-20) et des pièces métalliques (métaux en feuille régulateurs de fréquence) (4, 5).
PCT/JP2004/013762 2003-09-22 2004-09-21 Antenne partagee multifrequence WO2005029642A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005514089A JPWO2005029642A1 (ja) 2003-09-22 2004-09-21 多周波数共用アンテナ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003-330229 2003-09-22
JP2003330229 2003-09-22

Publications (1)

Publication Number Publication Date
WO2005029642A1 true WO2005029642A1 (fr) 2005-03-31

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PCT/JP2004/013762 WO2005029642A1 (fr) 2003-09-22 2004-09-21 Antenne partagee multifrequence

Country Status (2)

Country Link
JP (1) JPWO2005029642A1 (fr)
WO (1) WO2005029642A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007036338A (ja) * 2005-07-22 2007-02-08 Anten Corp アンテナ
WO2008039714A1 (fr) * 2006-09-25 2008-04-03 Shure Acquisition Holdings, Inc. Antenne dans un système sans fil
JP2008141739A (ja) * 2006-11-08 2008-06-19 Hitachi Metals Ltd アンテナ装置及びそれを用いた無線通信機器
JP2010041704A (ja) * 2008-07-31 2010-02-18 Avermedia Technologies Inc デジタルテレビジョンアンテナ
WO2010060194A1 (fr) 2008-11-26 2010-06-03 Research In Motion Limited Ensemble antenne repliée extraplate pour dispositifs de communication portables
WO2014125832A1 (fr) * 2013-02-18 2014-08-21 日本電気株式会社 Dispositif d'antenne à double bande
US9113374B2 (en) 2006-06-20 2015-08-18 Interdigital Technology Corporation Methods and system for performing handover in a wireless communication system
US9344919B2 (en) 2008-03-04 2016-05-17 Interdigital Patent Holdings, Inc. Method and apparatus for accessing a random access channel by selectively using dedicated or contention-based preambles during handover
US10283841B2 (en) 2016-11-29 2019-05-07 Shure Acquisition Holdings, Inc. Wireless antenna

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Publication number Priority date Publication date Assignee Title
JPS4811748U (fr) * 1971-06-18 1973-02-09
JP2001298313A (ja) * 2000-04-11 2001-10-26 Murata Mfg Co Ltd 表面実装型アンテナおよびそのアンテナを備えた無線機
JP2003017930A (ja) * 2001-06-29 2003-01-17 Nec Corp アンテナ素子、無線通信装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3503556B2 (ja) * 2000-02-04 2004-03-08 株式会社村田製作所 表面実装型アンテナおよびそのアンテナを装備した通信装置

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JPS4811748U (fr) * 1971-06-18 1973-02-09
JP2001298313A (ja) * 2000-04-11 2001-10-26 Murata Mfg Co Ltd 表面実装型アンテナおよびそのアンテナを備えた無線機
JP2003017930A (ja) * 2001-06-29 2003-01-17 Nec Corp アンテナ素子、無線通信装置

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007036338A (ja) * 2005-07-22 2007-02-08 Anten Corp アンテナ
US10880791B2 (en) 2006-06-20 2020-12-29 Interdigital Technology Corporation Methods and system for performing handover in a wireless communication system
US11582650B2 (en) 2006-06-20 2023-02-14 Interdigital Technology Corporation Methods and system for performing handover in a wireless communication system
US9113374B2 (en) 2006-06-20 2015-08-18 Interdigital Technology Corporation Methods and system for performing handover in a wireless communication system
JP2010504710A (ja) * 2006-09-25 2010-02-12 シュアー アクイジッション ホールディングス インコーポレイテッド ワイヤレスシステム中のアンテナ
CN101517825A (zh) * 2006-09-25 2009-08-26 舒尔·阿奎西什控股公司 无线系统中的天线
WO2008039714A1 (fr) * 2006-09-25 2008-04-03 Shure Acquisition Holdings, Inc. Antenne dans un système sans fil
US7414587B2 (en) 2006-09-25 2008-08-19 Shure Acquisition Holdings, Inc. Antenna in a wireless system
TWI476990B (zh) * 2006-09-25 2015-03-11 Shure Acquisition Holdings Inc 無線系統中之天線
AU2007300268B2 (en) * 2006-09-25 2011-05-19 Shure Acquisition Holdings, Inc. An antenna in a wireless system
JP4530026B2 (ja) * 2006-11-08 2010-08-25 日立金属株式会社 アンテナ装置及びそれを用いた無線通信機器
JP2008141739A (ja) * 2006-11-08 2008-06-19 Hitachi Metals Ltd アンテナ装置及びそれを用いた無線通信機器
US11134417B2 (en) 2008-03-04 2021-09-28 Interdigital Patent Holdings, Inc. Method and apparatus for accessing a random access channel by selectively using dedicated or contention-based preambles
US9344919B2 (en) 2008-03-04 2016-05-17 Interdigital Patent Holdings, Inc. Method and apparatus for accessing a random access channel by selectively using dedicated or contention-based preambles during handover
US11751104B2 (en) 2008-03-04 2023-09-05 InterDigital Patent Holdngs, Inc. Method and apparatus for accessing a random access channel by selectively using dedicated or contention-based preambles
US10021601B2 (en) 2008-03-04 2018-07-10 Interdigital Patent Holdings, Inc. Method and apparatus for accessing a random access channel by selectively using dedicated or contention based preambles during handover
US10368270B2 (en) 2008-03-04 2019-07-30 Interdigital Patent Holdings, Inc. Method and apparatus for accessing a random access channel by selectively using dedicated or contention-based preambles during handover
JP2010041704A (ja) * 2008-07-31 2010-02-18 Avermedia Technologies Inc デジタルテレビジョンアンテナ
EP2356719A4 (fr) * 2008-11-26 2015-06-17 Blackberry Ltd Ensemble antenne repliée extraplate pour dispositifs de communication portables
WO2010060194A1 (fr) 2008-11-26 2010-06-03 Research In Motion Limited Ensemble antenne repliée extraplate pour dispositifs de communication portables
WO2014125832A1 (fr) * 2013-02-18 2014-08-21 日本電気株式会社 Dispositif d'antenne à double bande
JPWO2014125832A1 (ja) * 2013-02-18 2017-02-02 日本電気株式会社 デュアルバンドアンテナ装置
US10283841B2 (en) 2016-11-29 2019-05-07 Shure Acquisition Holdings, Inc. Wireless antenna

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