WO2006025248A1 - アンテナ装置 - Google Patents
アンテナ装置 Download PDFInfo
- Publication number
- WO2006025248A1 WO2006025248A1 PCT/JP2005/015402 JP2005015402W WO2006025248A1 WO 2006025248 A1 WO2006025248 A1 WO 2006025248A1 JP 2005015402 W JP2005015402 W JP 2005015402W WO 2006025248 A1 WO2006025248 A1 WO 2006025248A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radio frequency
- frequency band
- frequency signal
- parasitic
- antenna device
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/28—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of two or more substantially straight conductive elements
- H01Q19/32—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of two or more substantially straight conductive elements the primary active element being end-fed and elongated
-
- 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
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
-
- 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
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
- H01Q5/48—Combinations of two or more dipole type antennas
- H01Q5/49—Combinations of two or more dipole type antennas with parasitic elements used for purposes other than for dual-band or multi-band, e.g. imbricated Yagi antennas
Definitions
- the present invention relates to a directivity-controllable antenna device used in, for example, a wireless LAN.
- ESPAR antennas have been developed as variable directional antennas, each including a plurality of parasitic elements each connected with a variable reactance circuit and a single feeding element. (For example, see Non-Patent Document 1 and Patent Documents:! To 3).
- FIG. 7A is a perspective view of the main part of the antenna device
- FIG. 7B is a side view of the main part.
- This antenna device includes a grounded ground conductor 1, a feeding element 60 arranged at the center thereof, and a plurality of parasitic elements 61a to 6 If arranged around the feeding element 60.
- the A variable reactance circuit using a varactor diode is provided between the plurality of parasitic elements 61a to 61f and the ground.
- variable reactance circuits 62b and 62e are connected to parasitic elements 61b and 61e, respectively.
- a feed circuit 30 is connected to the feed element 60.
- the feeder circuit is connected to the feeder element 60.
- the electromagnetic coupling between the central feeding element 60 and the surrounding parasitic elements 61a to 61f is actively used, and the radiation directivity (radiation) of the radio wave transmitted from the antenna device is used.
- the pattern is determined by the state of these electromagnetic couplings. Therefore, when the reactance of the variable reactance circuit connected to the surrounding parasitic elements 61a to 61f changes, the electromagnetic coupling state changes, and the radiation directivity of the antenna device changes.
- a feeding element 60 that is a monopole antenna is arranged at the center of a disk-shaped ground conductor 1 and is annularly spaced at a position approximately 1/4 wavelength away from it.
- Parasitic elements 61a to 61f consisting of six monopole antennas are arranged at intervals, and variable reactance cycles
- Non-Patent Document 1 Takashi Ohira, Satoshi Iigusa “Electronic Scanning Waveguide Array Antenna” IEICE Transactions C Vol.J87-C No.l January 2004 ppl2- 31
- Patent Document 1 Japanese Unexamined Patent Application Publication No. 2002-16427
- Patent Document 2 Japanese Patent Laid-Open No. 2001-24431
- Patent Document 3 Japanese Patent Laid-Open No. 2002-16432
- Patent Document 4 Japanese Patent Laid-Open No. 9-139626
- Non-Patent Document 1 and Patent Documents 1 to 3 are used only in a single frequency band, and a plurality of frequency bands are used simultaneously or in a switched manner. Is not supposed to be used for communication.
- ESPAR antennas each acting as an ESPAR antenna in a single frequency band, are provided on a single ground conductor to be applied to a plurality of frequency bands.
- ESPAR antennas change directivity due to electromagnetic coupling between a feed element (radiating element) and a parasitic element (waveguide element), so that feed elements that operate in multiple frequency bands and parasitic If the device is simply placed on the same ground conductor, the Radiation directivity in the wave number band is adversely affected by coupling with feed elements and non-feed elements used in other unintended frequency bands. Therefore, the desired radiation directivity cannot be obtained.
- an object of the present invention is to provide an antenna device capable of directivity control in a plurality of frequency bands.
- the antenna device of the present invention includes a first radio frequency signal that forms a first frequency band and a second radio frequency that forms a second frequency band that is higher than the first frequency band.
- a feed element excited by a signal a first parasitic element for directivity control for a first radio frequency signal, a second parasitic element for directivity control for a second radio frequency signal,
- the antenna device of the present invention has a first feed element excited by a first radio frequency signal forming a first frequency band, and a higher frequency range than the first frequency band.
- a second parasitic element for directivity control with respect to a signal, a filter having one end connected to the first parasitic element, passing the first frequency band and blocking the second frequency band, and A first variable reactance circuit connected between the other end and the ground and a second variable reactance circuit connected between the second parasitic element and the ground are provided.
- the antenna device of the present invention includes a plurality of first feed elements excited by a first radio frequency signal forming a first frequency band, and a higher frequency range than the first frequency band.
- a second feed element excited by a second radio frequency signal in a second frequency band A second parasitic element for directivity control with respect to the line frequency signal, a variable reactance circuit connected between the second parasitic element and the ground, and one end connected to the first feeding element;
- the radiation directivity (radiation pattern) for the first radio frequency signal is controlled by the feed element in accordance with the reactance control of the first variable reactance circuit.
- the radiation directivity for the second radio frequency signal is controlled by the feeding element and the second parasitic element in accordance with the reactance control of the second variable reactance circuit.
- the filter connected to the first parasitic element passes the first radio frequency signal and blocks the second radio frequency signal, the first parasitic element (element on the low frequency side)
- the termination condition in the second radio frequency signal hardly changes, and the influence of the first parasitic element (element on the low frequency side) on the radiation directivity of the second radio frequency signal can be reduced.
- the second parasitic element high frequency element
- the electromagnetic field normally excited on the low frequency side is extremely small if it is structured to excite in the basic mode generally used.
- the effect on the radiation directivity of the first radio frequency signal is small. As a result, the desired radiation directivity can be obtained for the first and second radio frequency signals.
- the first radio frequency is provided by including the first power feeding element excited by the first radio frequency signal and the second power feeding element excited by the second radio frequency signal. This can be applied as-is when the feed circuit for the signal and the second radio frequency signal are independent.
- the effects of the first and second parasitic elements, the first and second variable reactance circuits connected to them, and the filter are the same as in the case of (1) above.
- the second feeding element, the second parasitic element, and the variable reactance circuit can control the radiation directivity with respect to the second radio frequency signal, and the plurality of first feeding elements and the ground can be controlled. Pass the first radio frequency signal and block the second radio frequency signal during A plurality of first feeding elements adversely affect the radiation directivity control of the second radio frequency signal by the variable reactance circuit connected to the second parasitic element. Don't give.
- the first radio frequency signal acts as a diversity antenna by switching the switching circuit.
- FIG. 1 is a perspective view and a side view of a main part of an antenna device according to a first embodiment.
- FIG. 2 is a perspective view and a cross-sectional view of a main part of an antenna device having another configuration according to the first embodiment.
- FIG. 3 is a perspective view and a side view of a main part of an antenna device according to a second embodiment.
- FIG. 4 is a perspective view and a side view of a main part of an antenna device according to a third embodiment.
- FIG. 5 is a perspective view of a main part of an antenna device according to a fourth embodiment.
- FIG. 6 is a perspective view and a side view of the main part of an antenna device according to a fifth embodiment.
- FIG. 7 is a perspective view and a side view of a main part of a conventional antenna device.
- the antenna device has a first frequency band of 2.4 GHz band, a first radio frequency signal (IE EE802. Ib, g standard signal) and a second frequency band of 5.2 GHz band. This is applied to the radio frequency signal (IEEE802.11a).
- FIG. 1A is a perspective view of the main part of the antenna device
- FIG. 1B is a side view of the main part of the antenna device.
- a feeding element 10 composed of a monopole antenna is disposed in the center of the grounded disc-shaped ground conductor 1.
- the first parasitic elements 11a and l ib are arranged one by one on the left and right sides of the feeder element 10 in the figure. Further, around the feeding element 10, six second parasitic elements 21a to 21f are arranged in an annular shape.
- the first parasitic elements 11a and l ib are arranged at positions away from both sides of the feeding element 10 by about 1/4 to 1/2 wavelength in the first frequency band (2.4 GHz band). ing. Also, the second parasitic elements 21a to 21f are arranged at intervals of 60 ° on the circumference separated from the feeding element 10 by about lZ4 to lZ 2 wavelengths in the second frequency band (5.2 GHz band). Yes.
- a feeding circuit 30 that feeds power to the central feeding element 10 is provided below the feeding element 10 on the lower side of the ground conductor 1. Also, a filter that passes the first frequency band (2.4 GHz band) through each end of the first parasitic elements 11a and l ib and blocks the second frequency band (5.2 GHz band). 13a and 13b are connected. Further, first variable reactance circuits 12a and 12b are connected between the other ends of these finoletas 13a and 13b and the ground, respectively. In addition, a second variable reactance circuit is provided between each of the six second parasitic elements 21a to 21f and the ground.
- the second variable reactance circuit is also the second variable reactance circuit. Only the second variable reactance circuits 22b and 22e connected between the parasitic elements 21b and 2le and the ground are shown.
- the ground conductor 1 is a dielectric laminate such as FR-4 or Teflon (registered trademark) fiber. It is configured by forming a conductor film or a conductor layer on the upper surface or middle layer of the plate.
- the first and second variable reactance circuits are composed of a variable capacitance element such as a varactor diode whose reactance changes depending on an applied voltage, and a circuit that applies a control voltage thereto.
- the electrical length between the first parasitic elements 11a, l ib for low frequency and the filters 13a, 13b is the same as that of the first parasitic elements l la, l ib for low frequency.
- the second radio frequency signal (5.2 GHz band IEEE802.11a standard signal)
- Radiation directivity in the horizontal plane (plane direction of ground conductor 1)
- the horizontal plane for the first radio frequency signal (2.4GHz band IEEE802.11b and g standard signals) Can control the radiation directivity.
- a filter that passes the first frequency band and blocks the second frequency band between the first parasitic elements 11a, l ib for low frequency and the first variable reactance circuits 12a, 12b By providing 13a and 13b, even if the reactance of the first variable reactance circuits 12a and 12b is changed in order to control the radiation directivity for the first radio frequency signal, the second frequency band (5 (2 GHz band) has almost no effect on the electromagnetic coupling between the feed element 10 and the second parasitic elements 21a to 21f, and therefore does not adversely affect the radiation directivity for the second radio frequency signal. .
- the second parasitic elements 21a to 21f for the high frequency side are not provided with a filter for blocking the first frequency band on the low frequency side, but the second parasitic element for the high frequency side is not provided.
- the lengths of the parasitic elements 21a to 21f may be designed so that each of them is excited in the fundamental mode. For example, a monopole antenna with about 1/4 wavelength in the second frequency band (5.2 GHz band). With this configuration, these second parasitic elements 21a to 21f are Since the first radio frequency signal is hardly excited, the second parasitic elements 21a to 21f have almost no adverse effect on the radiation directivity with respect to the first radio frequency signal on the low frequency side.
- the radiation directivity can be controlled independently for each of the first radio frequency signal and the second radio frequency signal.
- the interval between the feeding element 10 and the parasitic elements l la, l ib, 21a to 21f is about 1 Z4 to 1/2 wavelength. It may be placed at any position within about one wavelength.
- the number of parasitic elements is not limited to that shown in Fig. 1.
- the variable reactance circuit is not limited to a circuit using a varactor diode, but may be a circuit for switching a fixed reactance with a switch or the like.
- the filter may be a band-pass SAW filter, a low-pass filter composed of a chip inductor and a capacitance, or the like.
- FIG. 2 shows an antenna device having a configuration different from that of FIG. 2A is a perspective view of the antenna device, and FIG. 2B is a cross-sectional view of the central portion as viewed from the side.
- the disk-shaped ground conductor 1 is used.
- the disk-shaped portion la and the cylindrical portion (skirt) lb extending downward from the periphery thereof are formed. Therefore, ground conductor 1 is constructed. This is made by bending down the periphery of a disk-shaped ground conductor that is slightly larger than the area where the feed element 10, the first parasitic elements l la and l ib, and the second parasitic elements 21a to 21f are arranged. Equivalent to. Other configurations are the same as those shown in FIG.
- the first and second radio frequency signals are fed to a single feeding element 10, but in the second embodiment, the first frequency band (2.4 GHz
- a first feeding circuit 31 for the first feeding element 1 (/) and a second feeding circuit 32 for the second feeding element 20 are provided.
- the first and second feed circuits 31 and 32 can be directly applied to independent circuits.
- the filter 14 that passes the first frequency band and blocks the second frequency band between the first feeding element 10 'and the first feeding circuit 31. Is provided. Therefore, the radiation directivity with respect to the second radio frequency signal will not be adversely affected by whether the first radio frequency signal is fed by the first power feeding circuit 31 or not.
- the second feeding element 20 is almost excited by the first feeding element 1 (/ in the low frequency side by determining its length and the like so as to be excited in the fundamental mode.
- the radiation directivity of the first radio frequency signal is not affected by the presence of the second feed element 20 without any interference.
- a filter 14 that passes the first frequency band and blocks the second frequency band is inserted between the first feeding circuit 31 and the first feeding element 1CT. Since the coupling between the first feeding element 1CT and the surrounding second parasitic element 21 is small, the radiation directivity for the second radio frequency signal is greatly affected by the feeding state of the first feeding circuit 31.
- the filter 14 is not essential because it is not affected.
- the feed element portion The structure of the first parasitic element is different from that of the antenna device according to the first embodiment.
- a feeding element 10 of a monopole antenna is arranged at the center of a disk-shaped ground conductor 1, and four matching short-circuit posts 50 are arranged around the vicinity thereof.
- One end of these matching short-circuit posts 50 (in the figure, three matching short-circuit bosses 50a, 50c, and 50d appear) are connected to the ground conductor 1.
- six first parasitic elements 11a to 11lf are arranged in an annular shape. Pass the first frequency band (2.4 GHz band) to the end of each of these first parasitic elements lla to l lf and block the second frequency band (5.2 GHz band) A filter is connected.
- a first variable reactance circuit is connected between the other end of these filters and the ground.
- FIG. 4B only l ib and l ie are shown as the first parasitic elements in order to avoid complication of the figure, and accordingly, the inductors 13b and 13e are added to the parasitic elements l lb and l le. Further, the first variable reactance circuits 12b and 12e are respectively connected between the other ends of the filters 13b and 13e and the ground.
- the other configurations in FIG. 4 are the same as those shown in FIG.
- the feed element 10 is a monopole antenna that resonates in the first frequency band (2.4 GHz band), and the shorting post 50 for matching is used for matching adjustment in the second frequency band (5.2 GHz band). It is a short circuit post.
- the first radio frequency signal IEEE802.11b, g signal
- the second radio frequency signal IEEE802.Ua standard signal
- the shorting post 50 for matching is excited by the signal, acting as a feeding element in the second frequency band.
- power can be supplied in a state where the first and second radio frequency signals are matched.
- the second radio frequency signal (5.2 GHz band
- the radiation directivity in the horizontal plane (plane direction of ground conductor 1)
- the first radio frequency signal (2.4 GHz band IEEE802.1 lb, g standard signal) in the horizontal plane is used. Radiation directivity can be controlled.
- FIG. 5 is a perspective view of the main part of the antenna device.
- a feeding element 10 ′ which is a helical antenna, is arranged in the center of the disk-shaped ground conductor 1.
- the feed element 10 With such a structure, the feed element 10 'matches the first and second signals, even if the radio frequency signal is shifted. In this state, power can be supplied.
- a similar effect can be obtained by arranging a meander-shaped feeding element in addition to such a helical antenna.
- the structure of the feed element is not limited to the structure of FIG. 1, FIG. 2, FIG. 4, and FIG. 5, but may be any other structure as long as it excites in a plurality of target frequency bands. It ’s okay.
- (A) is a perspective view of the main part of the antenna device
- (B) is a side view of the main part of the antenna device.
- the first feeding elements 10 ′ a and 10′b are arranged at symmetrical positions around the center of the grounded ground conductor 1, respectively.
- a second power feeding element 20 is arranged in the center of the disk-shaped ground conductor 1.
- six second parasitic elements 21a to 21f are arranged in an annular shape at an equal angle.
- the first feeding elements 10'a and 10'b include the first frequency band (2.
- the antenna switching circuit 4 is connected through filters 13a and 13b that pass the 4GHz band) and block the second frequency band (5.2GHz band).
- a first power supply circuit 31 is connected to the antenna switching circuit 4.
- a second feeder circuit 32 is connected to the second feeder element 20.
- a variable reactance circuit 22 is connected between the second parasitic elements 21a to 21f and the ground.
- FIG. 6 (B) only the parasitic elements 21b and 21e are shown in order to avoid complication of the figure, and accordingly, the variable reactance circuit is also connected between the parasitic elements 21b and 21e and the ground. Only circuits 22b and 22e are shown.
- the second radio frequency signal is fed from the second feeding circuit 32 and the radiation directivity can be controlled by reactance control of the second variable reactance circuit of the second parasitic elements 21a to 21f. it can.
- the first power supply circuit 31 supplies the first radio frequency signal and acts as a switching diversity one antenna for the first radio frequency signal.
- the first radio frequency signal can be received best based on, for example, FER (Flame Error Rate) or RSSI (Received Signal Strength Indicator) during reception. Switch the antenna switching circuit 4 so that
- the first feeding elements 10'a and 10'b are provided with filters 13a and 13b that pass the first frequency band and block the second frequency band.
- Frequency band Therefore, there is almost no electromagnetic coupling between the feed element 1 (/ a, ic b and the second parasitic elements 21a to 21f. Therefore, even if the antenna switching circuit 4 is switched, the second radio frequency The signal radiation directivity is not affected.
- the antenna device has been described as acting mainly as a transmitting antenna. However, it is obvious that the antenna device acts similarly as a receiving antenna by the reversible theorem of the antenna. is there.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006531968A JP4270278B2 (ja) | 2004-09-03 | 2005-08-25 | アンテナ装置 |
| US11/523,703 US7242366B2 (en) | 2004-09-03 | 2006-09-20 | Antenna apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004257379 | 2004-09-03 | ||
| JP2004-257379 | 2004-09-03 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/523,703 Continuation US7242366B2 (en) | 2004-09-03 | 2006-09-20 | Antenna apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006025248A1 true WO2006025248A1 (ja) | 2006-03-09 |
Family
ID=35999905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/015402 Ceased WO2006025248A1 (ja) | 2004-09-03 | 2005-08-25 | アンテナ装置 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7242366B2 (ja) |
| JP (1) | JP4270278B2 (ja) |
| WO (1) | WO2006025248A1 (ja) |
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| JP2009543395A (ja) * | 2006-07-07 | 2009-12-03 | アイティーアイ スコットランド リミテッド | アンテナ配置 |
| JP2019176464A (ja) * | 2018-03-26 | 2019-10-10 | 和碩聯合科技股▲ふん▼有限公司Pegatron Corporation | デュアルバンドアンテナモジュール |
| US11552398B2 (en) | 2014-11-18 | 2023-01-10 | Commscope Technologies Llc | Cloaked low band elements for multiband radiating arrays |
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| FR2863109B1 (fr) * | 2003-11-27 | 2006-05-19 | Centre Nat Rech Scient | Antenne a diagramme de rayonnement d'emission/reception configurable et orientable, station de base correspondante |
| JP4345719B2 (ja) * | 2005-06-30 | 2009-10-14 | ソニー株式会社 | アンテナ装置及び無線通信装置 |
| US20080122712A1 (en) * | 2006-11-28 | 2008-05-29 | Agile Rf, Inc. | Tunable antenna including tunable capacitor inserted inside the antenna |
| DE102007004612B4 (de) * | 2007-01-30 | 2013-04-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Antennenvorrichtung zum Senden und Empfangen von elektromagnetischen Signalen |
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| EP2256860B1 (en) * | 2009-05-26 | 2018-12-19 | Alcatel Lucent | Antenna array |
| US8451180B2 (en) * | 2009-11-23 | 2013-05-28 | Aerovironment, Inc. | Integrated antenna and display shade |
| US8717249B2 (en) * | 2009-12-28 | 2014-05-06 | Panasonic Corporation | Variable directivity antenna apparatus including parasitic elements having cut portion of rectangular shape |
| GB201016203D0 (en) * | 2010-09-27 | 2010-11-10 | Sec Dep For Business Innovation & Skills The | Smart antenna for wireless communication |
| HK1220050A1 (zh) | 2013-03-15 | 2017-04-21 | Ruckus Wireless, Inc. | 为双频定向天线而设的低频带反射器 |
| FR3008550B1 (fr) * | 2013-07-15 | 2015-08-21 | Inst Mines Telecom Telecom Bretagne | Antenne de type bouchon et structure antennaire et ensemble antennaire associes |
| USD780128S1 (en) * | 2015-09-04 | 2017-02-28 | Lutron Electronics Co., Inc. | Wireless control device |
| USD780129S1 (en) * | 2015-09-04 | 2017-02-28 | Lutron Electronics Co., Inc. | Wireless control device |
| US10935687B2 (en) | 2016-02-23 | 2021-03-02 | Halliburton Energy Services, Inc. | Formation imaging with electronic beam steering |
| TWI713659B (zh) | 2016-12-21 | 2020-12-21 | 智邦科技股份有限公司 | 天線調諧系統及其方法 |
| TWI671951B (zh) * | 2018-03-09 | 2019-09-11 | 啟碁科技股份有限公司 | 智慧型天線裝置 |
| US11469502B2 (en) * | 2019-06-25 | 2022-10-11 | Viavi Solutions Inc. | Ultra-wideband mobile mount antenna apparatus having a capacitive ground structure-based matching structure |
| CN113597710B (zh) * | 2020-02-27 | 2025-06-03 | 松下知识产权经营株式会社 | 天线装置 |
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- 2005-08-25 JP JP2006531968A patent/JP4270278B2/ja not_active Expired - Fee Related
- 2005-08-25 WO PCT/JP2005/015402 patent/WO2006025248A1/ja not_active Ceased
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2006
- 2006-09-20 US US11/523,703 patent/US7242366B2/en not_active Expired - Fee Related
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009543395A (ja) * | 2006-07-07 | 2009-12-03 | アイティーアイ スコットランド リミテッド | アンテナ配置 |
| US11552398B2 (en) | 2014-11-18 | 2023-01-10 | Commscope Technologies Llc | Cloaked low band elements for multiband radiating arrays |
| US11870160B2 (en) | 2014-11-18 | 2024-01-09 | Commscope Technologies Llc | Cloaked low band elements for multiband radiating arrays |
| US12394901B2 (en) | 2014-11-18 | 2025-08-19 | Outdoor Wireless Networks LLC | Cloaked low band elements for multiband radiating arrays |
| JP2019176464A (ja) * | 2018-03-26 | 2019-10-10 | 和碩聯合科技股▲ふん▼有限公司Pegatron Corporation | デュアルバンドアンテナモジュール |
| CN110364824A (zh) * | 2018-03-26 | 2019-10-22 | 和硕联合科技股份有限公司 | 双频天线模块 |
| US10784577B2 (en) | 2018-03-26 | 2020-09-22 | Pegatron Corporation | Dual-band antenna module |
| CN110364824B (zh) * | 2018-03-26 | 2021-07-30 | 和硕联合科技股份有限公司 | 双频天线模块 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4270278B2 (ja) | 2009-05-27 |
| JPWO2006025248A1 (ja) | 2008-05-08 |
| US20070030210A1 (en) | 2007-02-08 |
| US7242366B2 (en) | 2007-07-10 |
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