EP1849213A1 - Antenne dipole imprimee multibande - Google Patents
Antenne dipole imprimee multibandeInfo
- Publication number
- EP1849213A1 EP1849213A1 EP06709478A EP06709478A EP1849213A1 EP 1849213 A1 EP1849213 A1 EP 1849213A1 EP 06709478 A EP06709478 A EP 06709478A EP 06709478 A EP06709478 A EP 06709478A EP 1849213 A1 EP1849213 A1 EP 1849213A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dipole
- leg
- antenna
- dipoles
- fcl
- 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.)
- Granted
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
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
- H01Q9/285—Planar dipole
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
Definitions
- the present invention relates to a multi-band printed dipole antenna for a telecommunications signal reception and / or transmission network capable of radiating radio fields in several frequency bands.
- Such an antenna is for example intended to operate in a first frequency band of a cellular radio communication network according to the DCS-1800 standard and / or of the CDMA type and in a second frequency band for a cellular radio communication system according to the standard GSM
- the invention can also be applied to the field of measurement probes.
- a printed antenna comprises a t-shaped conductor element which extends over the top of a dielectric substrate and which has an axial slot separating two radiating strands from the tee. .
- the conductive element is fed by a coaxial feed line extending on the underside of the substrate.
- This dipole uses the principle of double stub adaptation and a wide frequency band.
- multiband antennas are known which associate by coupling additional strands in the same plane as a main strand.
- multiband operation can be achieved by introducing localized elements, by series supply of several dipoles or by deformation of a main strand.
- the antenna described in the above-mentioned patent and article provides only one frequency band operation, and all the above-mentioned solutions have the disadvantage of having narrowband multifrequency operation.
- a multi-band printed dipole antenna according to the invention comprises first and second dipoles supported by a dielectric substrate and each having, in a manner known from French Pat. No. 2,713,020, a t-shaped conductive element comprising a leg and two strands. radiating separated by a coupling slot in the leg, and a feeding line that can extend for the most part parallel to the leg.
- the invention improves it by the presence of a second dipole whose leg and strands are respectively longer than the leg and the strands. of the first dipole.
- the antenna according to the invention is characterized by a superposition of the leg of the first dipole and a base of the leg of the second dipole, an alignment of the coupling slots, and a decoupling notch formed in the leg of the second dipole and in which the coupling slot of the first dipole opens by superposition.
- the notch in the second dipole has a bottom substantially aligned with the slot of the first dipole.
- the antenna according to the invention is very compact while providing operation in different frequency bands.
- the antenna can reach a stationary wave rate of less than 2 over more than 50% of the bandwidth in each of the bands.
- the first dipole radiates in the frequency bands of DCS-1800, UMTS and WLAN networks and the second dipole in the GSM-900 network frequency band.
- the antenna according to the invention retains the bandwidth performance of the known antenna according to the French patent 2,713,020 and offers considerable space savings thanks to the superposition of the two dipoles, the thickness of the antenna being negligible in front of the length or width of it.
- the decoupling notch discovers by completely superimposing the coupling slot of the first dipole, and the dielectric substrate comprises two dielectric layers and the dipole supply lines extend between faces facing the two dielectric layers, or the dielectric substrate comprises for each dipole a dielectric layer having faces respectively supporting the feed line and the conductive element of the dipole, and a dielectric layer extending between the layers supporting the dipoles .
- the conductive elements of the dipoles extend on a common face of the dielectric substrate, the leg of the first dipole and the base of the leg of the second dipole are merged, and the supply lines extend on the other side of the dielectric substrate.
- This embodiment has the advantage of having a single substrate, which provides space saving and less space.
- a metal plane may extend perpendicularly to the faces of the substrate, the dipole having the strands farthest from the metal plane operating at the lowest frequencies.
- the invention also relates to an antenna array comprising a plurality of antennas, each printed antenna being supported by a dielectric substrate and comprising first and second dipoles each having a t-shaped conducting element and comprising a leg and two radiating strands separated by a coupling slot formed in the leg, and a feeding line, the leg and the strands of the second dipole being respectively longer than the leg and the strands of the first dipole.
- the network is characterized in that in each antenna, the leg of the first dipole and a base of the leg of the second dipole are superimposed, the coupling slots are aligned, and a decoupling slot is formed in the leg of the second dipole and the coupling slot of the first dipole opens by superposition in the decoupling slot, and the faces of the antenna substrates are parallel to each other and the coupling slots of the dipoles are oriented parallel.
- FIG. 1 is a view from above of the dual-band printed dipole antenna according to a first embodiment of the invention
- Figure 2 is a section taken along the line II-II of Figure 1;
- FIGS. 3 and 4 are top views of first and second dipoles of the antenna according to the first embodiment;
- FIG. 5 is a plan view of the supply lines of the antenna according to the first embodiment;
- FIG. 6 is a top view of the antenna with common access supply lines according to a variant of the first embodiment
- Figure 7 is a section taken along the line VII-VII of Figure 6;
- FIG. 8 is a view from above of the antenna with supply lines on separate dielectric layers according to a second embodiment of the invention.
- Fig. 9 is a section taken along line IX-IX of Fig. 8;
- Figure 10 is a top view of the antenna on a monolayer substrate according to a third embodiment of the invention.
- Fig. 11 is a section taken along the line XI-XI of Fig. 10; - Figure 12 is a schematic perspective view of the antenna with a metal plane according to a variant of the first embodiment; and Fig. 13 is a schematic perspective view of a one-dimensional array of dual-band printed dipole antennas according to the first embodiment of the invention.
- a dual-band printed dipole antenna according to the first embodiment of the invention is hereinafter described in detail with reference to FIGS. 1 to 5.
- the antenna comprises two stacked rectangular dielectric substrate layers CS1 and CS2, and two superposed printed dipoles D1 and D2.
- the dipoles radiate in different frequency bands BF1 and BF2 and therefore have different dimensions.
- the first dipole D1 the smallest one, extends on the lower face of the first layer CS1 and is intended to radiate in a first frequency band BF1, for example between 1.5 and 2.5 GHz approximately so that to cover a band combining the DCS 1800, UMTS and WLAN bands.
- the second dipole D2 extends on the upper face of the second layer CS2 and is intended to radiate in a second frequency band BF2 which is less than the first frequency band BF1 and included as an example between 0.7 and Around 1.0 GHz to cover the GSM-900 band.
- a printed feed line LA1 with integrated duplexer feeds the first dipole D1
- a printed feed line LA2 with integrated duplexer feeds the second dipole D2.
- the supply lines LA1 and LA2 extend between the facing faces of the first and second dielectric layers CS1 and CS2.
- the facing faces of the dielectric layers are the faces opposite to the faces on which the dipoles extend, and all the faces of the layers are parallel to each other.
- the layers CS1 and CS2 are for example a Duroid substrate with a relative dielectric permittivity of 2.2 and a thickness of about 0.75 mm.
- the layers CS1 and CS2 are in different relative dielectric permittivity substrates and / or have different thicknesses. As shown in FIG.
- each dipole D1, D2 comprises a flat conductor element in the shape of a tee comprising a leg J1, J2 and two lateral strands B1, B2 constituted by wings of the tee perpendicular to the leg and separated by a slot of coupling FC1, FC2 arranged axially at the top of the leg.
- the leg J1, J2 constitutes a ground plane for the corresponding feed line LA1, LA2.
- the songs of the bases of the legs J1 and J2 are coplanar in a plane perpendicular to the layers, and the strands B2 of the largest dipole D2 are located in front of the strands B1 of the smaller dipole D2 in the direction of radiation.
- the legs have for example identical widths and collinear edges in top view, as shown in Figures 1 and 2, the longest leg J2 covering the shorter leg Jl to impart high compactness to the antenna.
- the lateral strands B1, B2 constitute the radiating part of the conductive element.
- the coupling slots FC1 and FC2 are rectangular in shape and very narrow, for example having a width of 0.5 mm.
- the lateral strands B1, B2 of each dipole D1, D2 preferably have identical lengths.
- the sum of the lengths of the strands is substantially equal to half the wavelength corresponding to the center frequency of the operating band of each dipole.
- the strands B1 of the first dipole D1 are shorter than the strands B2 second dipole D2.
- the length of the leg J1, J2 is equal to about half of said wavelength, although this length of the leg is less critical since it does not intervene in a dominant way in the radiation of the antenna.
- the width of the legs J1, J2 is for example substantially double the width W1, W2 of the lateral strands B1, B2 so that the legs cover the feed lines LA1 and LA2 extending longitudinally between the legs.
- the feed lines LA1 and LA2 extend parallel to the legs of the dipoles D1 and D2 and are printed with the dipoles in triplate technology for which the legs J1 and J2 play the role of ground plane.
- the supply line LA1 of the first dipole D1 extends on the leg J1 between an access end ElI and a U-shaped end E12 symmetrically to the line LA2 with respect to an axial longitudinal plane P of the common antenna. legs and coupling slots.
- the access end ElI is located at the edge of the antenna and is to be connected by a connector to a first microwave signal generator for the band BF1.
- the U-shaped end E12 has a soul intersecting perpendicularly by superimposing the coupling slot FC1 and located axially under the birth of the strands B1 and is terminated by a short end branch extending substantially parallel to the coupling slot FC1 and near the LA2 power line.
- the end E12 is folded in a U towards the supply line LA2 of the second dipole in order to maintain a high compactness of the antenna by avoiding to discard the supply lines LA1 and LA2 juxtaposed parallel between the dielectric layers CS1 and CS2 and thus to widen the legs J1 and J2, while ensuring an efficient excitation of the strand B1 over which the other supply line LA2 and thus of the two quarter-wave strands B1 coupled by a slot line FC1.
- the length of the coupling slot FC1 and the dimensions of the U-shaped end E12 of the feed line LA1 are chosen in order to adapt the dipole D1 to a wide band BF1.
- the supply line LA2 of the second dipole D2 extends under the leg J2 between an access end E21 and a right angled end E22, symmetrically to the line LA1.
- the access end E21 is located at the edge of the antenna and connected by a connector to a second microwave signal generator for the BF2 band.
- the U-shaped end E22 is terminated by a small rectilinear section located axially under the birth of the strands B2, and crossing perpendicularly by superpositioning the coupling slot FC2 to extend also under the strand B2 of the same side of the axial longitudinal plane P of the antenna, and thus excite the two radiating strands B2 in quarter-wave stubs coupled by a slot line FC2.
- a decoupling slot ED for example rectangular, is provided in the leg J2 of the second dipole D2 (FIG. 4) extending on the leg J1 of the first dipole D1 and beyond the top of the leg J1, including the coupling slot F1 of the first dipole Dl.
- the notch ED is formed in the edge of the leg J2 of the second dipole D2 closest to the feed line LA1 and discovers a portion of the line end E12 from the coupling slot FC1, and substantially the slot of FCl coupling itself.
- the notch ED completely overlaps the coupling slot FC1 and has a bottom which is located substantially in a plane perpendicular to the dielectric layers and containing the side of the coupling slot FC1 closest to the other line. LA2 power supply.
- the decoupling slot ED decouples the ground plane constituted by the leg J2 of the second dipole D2 with respect to the coupling slot FC1 of the strands B1 of the first dipole D1 so that the latter can radiate.
- the dipole antenna printed according to the first embodiment of the invention combines in a compact manner two superimposed and decoupled printed dipoles D1 and D2 respectively operating in the frequency bands BF1 and BF2, according to the principle of double stub adaptation.
- the printed dipole antenna typically extends over a maximum length of about 150 mm and a maximum width of about 150 mm, preferably respecting a square shape, and has a thickness of about 1.5 mm to provide a bulk minimum.
- the printed dipole antenna described above has a stationary wave ratio of less than 2 over more than 50% bandwidth in each of the two frequency bands BF1 and BF2, and guarantees a decoupling level. better than -20 dB between E21 accesses for BFl band (GSM) and ElI for BF2 band (DCS + UMTS + WLAN).
- the feed lines LAIa and LA2a of the dipoles DIa and D2a of the antenna have a common access end El, as shown in FIG. and 7.
- the common access end E1 situated between the bases of the legs JIa, J2a of the dipoles DIa, D2a is collinear with one LA2a of the supply lines, and the other LAIa feed line presents a sinuous end to bypass the bottom of the decoupling slot FCIa.
- FIGS 8 and 9 illustrate the second embodiment of the antenna according to the invention.
- the antenna feed is performed on separate layers.
- the antenna comprises a third dielectric substrate layer CS3, the second layer CS2 extending between the first and third layers CS1 and CS3.
- One DIb of the dipoles extends on the outer face of one CSl of the first and third layers, and the other dipole extends between the two other layers CS2 and CS3.
- the feed line LAIb relative to the first dipole DIb extends respectively between said one CSl of the first and third layers CS1 and CS3 and the second intermediate layer CS2, on the leg JIb of the dipole DIb and under the leg J2b of the dipole D2b, and the supply line LA2b relative to the other dipole D2b extends on the outer face of the other CS3 of the first and third layers, on the legs JIb and J2b dipoles DIb and D2b.
- the LA2b power line is printed in technology microstrip while the LAIb feed line is printed in triplate technology.
- the second embodiment provides more decoupling between the dipoles DIb and D2b but at the expense of a thicker antenna compared to the first embodiment shown in Figures 1 and 2.
- the conductive element of the dipole DIb and the feed line LAIb are interchanged, the conductive element of the dipole DIb being located between the layers CS1 and CS2 and the feed line LAIb being located under the layer CS1, the outside of the stack of layers, and / or the conductive element of the dipole D2b and the feed line LA2b are interchanged, the feed line LA2b being located between the layers CS3 and CS2 and the conductive element of dipole D2b being located on the CS3 layer, outside the stack of layers.
- Figures 10 and 11 illustrate the third embodiment of the antenna dielectric structure monolayer and microstrip according to the invention.
- the two printed dipoles DIc and D2c are etched on the same face of a single substrate S and the feed lines LAIc and LA2c are etched on the other side of the single substrate S.
- the leg JIc of the smallest dipole DIc is used also of an extreme portion of the leg J2c of the largest dipole D2c so that the legs JIc and J2c are coaxial and the bases of the legs JIc and J2c are merged on the access ends Elle and E21c feed lines LAIc and LA2c.
- the decoupling notch EDc which may still be rectangular is practiced in the edge of the leg J2c of the second dipole D2c in front of the strand Bl on the line end El2c and located between this strand Bl and the bottom of the coupling slot FC2c.
- the bottom of the notch EDc is set back with respect to the aligned slots FCIc and FC2c so that the coupling slot FCIc of the first dipole DIc opens into the notch EDc and the first dipole DIc can radiate.
- a second coupling slot F1 similar to the first slot FCIc is formed axially in the base of the leg JIc opposite the first slot FCIc and collinearly to that and two slots F2 are formed at the end of a leg portion J2c D2c dipole located in front of the strand B1 under which passes LAIc feed line and LA2c to form a narrowing of the leg J2c in a corner of the EDc notch to the width of the LA2c power line and above it.
- FIG. 12 shows an alternative embodiment comprising a metal ground plane PS extending perpendicularly to the faces of the substrate distributed in one, two or three layers and therefore to the flat conductive dipoles. It has been assumed in FIG. 12 that the antenna was in accordance with the first embodiment shown in FIG. 1.
- the ground plane PS serves as a means of reflection in order to suppress a backward radiation of the dipoles and to direct the radiation forward. dipoles opposite the ground plane PS, in the axial direction of the opening of the coupling slots FC1 and FC2.
- the ground plane PS aims to increase the directivity of the antenna of the order of 2 dB, while maintaining broadband performance of the antenna. For this purpose, the largest B2 strands of the antenna radiating at the lowest frequencies are the farthest from the ground plane PS.
- the PS ground plane is located at a distance from the rear AC access side of the antenna by about one-third of the wavelength corresponding to the highest frequency of the operating band of the antenna and therefore frequency band BF1 of the smaller dipole.
- the antenna is introduced into a metal cavity CV or a waveguide, as shown in dashed lines in Figure 12, to obtain a frequency-doubled feed system in a guided structure.
- the radio performance of the bi-band printed dipole antenna described above is maintained when a plurality of dual-band printed dipole antennas according to the invention are juxtaposed to form a BF1 and BF2 frequency band network.
- FIG. 13 shows an example of a one-dimensional network RE of two-band printed dipole antennas according to the first embodiment of the invention.
- the network comprises a column of two-band printed dipole antennas whose faces of the substrates are parallel to each other and preferably coplanar and whose axial planes P of coupling slots FC1, FC2 dipoles are oriented parallel.
- the antennas preferably have common substrate layers extending perpendicularly to a metal ground plane PS that can be the bottom of a cavity CV.
- the feed lines LAl dipoles Dl of all the antennas are connected to a first common access end and feed lines LA2 dipoles D2 of all the antennas are connected to a second common access end.
- the first and second common access ends may be interconnected.
- This network may constitute, for example, an antenna for a base station for the GSM, DCS and UMTS radiocommunication networks and a terminal for a WLAN network (IEEE 802. xx). Depending on the orientation of the antenna, it has a directional diagram in elevation DE and a wide azimuth diagram DA for the two frequency bands BF1 and BF2.
- a dual polarization and two frequency band antenna array (not shown) consists of a first column of first two-band printed dipole antennas which are oriented in the same manner as in FIG. a second column of second dual-band printed dipole antennas which are oriented in the same way and perpendicular to the orientation of the first antennas.
- the dipoles D1 and D2 of the first column radiate an electric field polarized and crossed perpendicular to the electric field radiated respectively by the dipoles D1 and D2 of the second column for respective operations in the first common frequency band BF1 and the second band of common frequency BF2.
- the dual polarization and thus two-dimensional network may comprise several parallel columns alternating on a plane.
- the antenna according to the invention can be extended to a structure multiband by introducing as many dipole levels as desired operating bands, and as many dielectric layers as desired operating bands for the first embodiment, or as many pairs of dielectric layers as desired operating bands for the second embodiment, or as many dipoles as desired operating bands for the third embodiment. It is then necessary that one or more decoupling notches are formed in the legs of the dipoles of the upper levels so that they do not cover the coupling slots of the dipoles of the lower levels.
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
- Structure Of Receivers (AREA)
- Superheterodyne Receivers (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0501814A FR2882468A1 (fr) | 2005-02-18 | 2005-02-18 | Antenne dipole imprimee multibandes |
| PCT/FR2006/050099 WO2006087488A1 (fr) | 2005-02-18 | 2006-02-03 | Antenne dipole imprimee multibande |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1849213A1 true EP1849213A1 (fr) | 2007-10-31 |
| EP1849213B1 EP1849213B1 (fr) | 2008-07-23 |
Family
ID=34954534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06709478A Expired - Lifetime EP1849213B1 (fr) | 2005-02-18 | 2006-02-03 | Antenne dipole imprimee multibande |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7432873B2 (fr) |
| EP (1) | EP1849213B1 (fr) |
| AT (1) | ATE402500T1 (fr) |
| DE (1) | DE602006001942D1 (fr) |
| FR (1) | FR2882468A1 (fr) |
| WO (1) | WO2006087488A1 (fr) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2954829B1 (fr) * | 2009-12-31 | 2012-03-02 | Art Fi | Systeme pour mesurer un champ electromagnetique |
| RU2432646C1 (ru) * | 2010-04-23 | 2011-10-27 | Государственное образовательное учреждение высшего профессионального образования "Новосибирский государственный технический университет" | Двухдиапазонная печатная дипольная антенна |
| US8368602B2 (en) | 2010-06-03 | 2013-02-05 | Apple Inc. | Parallel-fed equal current density dipole antenna |
| CN103403898B (zh) | 2011-01-27 | 2016-10-19 | 盖尔创尼克斯有限公司 | 宽带双极化天线 |
| CN103620867B (zh) * | 2011-07-18 | 2016-03-09 | 索尼爱立信移动通讯有限公司 | 具有金属背板和耦合馈电元件的多频带无线终端以及相关多频带天线系统 |
| FR2999337A1 (fr) | 2012-12-12 | 2014-06-13 | Thomson Licensing | Circuit de transition d'une ligne micro-ruban vers une ligne fente duale bande |
| US9496623B2 (en) * | 2014-11-21 | 2016-11-15 | Sony Corporation | Dual band multi-layer dipole antennas for wireless electronic devices |
| US10461396B2 (en) | 2015-04-03 | 2019-10-29 | Fit Pay, Inc. | System and method for low-power close-proximity communications and energy transfer using a miniature multi-purpose antenna |
| CN107275804B (zh) * | 2016-04-08 | 2022-03-04 | 康普技术有限责任公司 | 移除共模共振(cmr)和差模共振(dmr)的多频带天线阵列 |
| CN107181045B (zh) * | 2017-06-19 | 2024-02-20 | 上海传英信息技术有限公司 | 一种移动终端的天线及具有该天线的移动终端 |
| US10311264B1 (en) * | 2018-04-30 | 2019-06-04 | Xerox Corporation | Printed RFID tag antenna array with interfering subarrays |
| CN109473771B (zh) * | 2018-12-25 | 2023-12-15 | 广东交通职业技术学院 | 一种平面型全向偶极子双工天线 |
| CN111416215B (zh) * | 2019-01-06 | 2025-08-01 | 苏州博海创业微系统有限公司 | 宽带双频共口径天线阵列 |
| KR102608773B1 (ko) * | 2019-02-14 | 2023-12-04 | 삼성전자주식회사 | 안테나 모듈 및 이를 포함하는 전자 장치 |
| RU2712798C1 (ru) * | 2019-05-20 | 2020-01-31 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Новосибирский Государственный Технический Университет" | Двухдиапазонная антенна |
| CN113451788B (zh) * | 2020-03-24 | 2022-10-18 | 华为技术有限公司 | 天线、天线模组及无线网络设备 |
| CN114665261B (zh) * | 2020-12-22 | 2023-03-28 | 华为技术有限公司 | 一种天线和通信设备 |
| US20240144842A1 (en) * | 2022-10-31 | 2024-05-02 | Herbert Marshall | Deck of playing cards and methods of play |
| EP4380066A1 (fr) | 2022-11-29 | 2024-06-05 | Thales Dis France Sas | Structure d'antenne accordée inductivement pour différentes puces et fréquences sans fil |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2713020B1 (fr) | 1993-11-24 | 1996-02-23 | Roger Behe | Elément rayonnant du type dipôle réalisé en technologie imprimée, procédé d'ajustement de l'adaptation et réseau correspondants. |
| US6094176A (en) * | 1998-11-24 | 2000-07-25 | Northrop Grumman Corporation | Very compact and broadband planar log-periodic dipole array antenna |
| FR2797098B1 (fr) * | 1999-07-30 | 2007-02-23 | France Telecom | Antenne imprimee bi-polarisation et reseau d'antennes correspondant |
| US6310584B1 (en) * | 2000-01-18 | 2001-10-30 | Xircom Wireless, Inc. | Low profile high polarization purity dual-polarized antennas |
| US6529172B2 (en) * | 2000-08-11 | 2003-03-04 | Andrew Corporation | Dual-polarized radiating element with high isolation between polarization channels |
| US6621464B1 (en) * | 2002-05-08 | 2003-09-16 | Accton Technology Corporation | Dual-band dipole antenna |
| US20040036655A1 (en) * | 2002-08-22 | 2004-02-26 | Robert Sainati | Multi-layer antenna structure |
| US7095382B2 (en) * | 2003-11-24 | 2006-08-22 | Sandbridge Technologies, Inc. | Modified printed dipole antennas for wireless multi-band communications systems |
-
2005
- 2005-02-18 FR FR0501814A patent/FR2882468A1/fr active Pending
-
2006
- 2006-02-03 EP EP06709478A patent/EP1849213B1/fr not_active Expired - Lifetime
- 2006-02-03 AT AT06709478T patent/ATE402500T1/de not_active IP Right Cessation
- 2006-02-03 WO PCT/FR2006/050099 patent/WO2006087488A1/fr not_active Ceased
- 2006-02-03 DE DE602006001942T patent/DE602006001942D1/de not_active Expired - Lifetime
-
2007
- 2007-08-02 US US11/888,756 patent/US7432873B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006087488A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE602006001942D1 (de) | 2008-09-04 |
| FR2882468A1 (fr) | 2006-08-25 |
| US20080030418A1 (en) | 2008-02-07 |
| ATE402500T1 (de) | 2008-08-15 |
| EP1849213B1 (fr) | 2008-07-23 |
| US7432873B2 (en) | 2008-10-07 |
| WO2006087488A1 (fr) | 2006-08-24 |
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