EP2030284A2 - Antenne multi-bandes - Google Patents

Antenne multi-bandes

Info

Publication number
EP2030284A2
EP2030284A2 EP07798675A EP07798675A EP2030284A2 EP 2030284 A2 EP2030284 A2 EP 2030284A2 EP 07798675 A EP07798675 A EP 07798675A EP 07798675 A EP07798675 A EP 07798675A EP 2030284 A2 EP2030284 A2 EP 2030284A2
Authority
EP
European Patent Office
Prior art keywords
type dipole
dipole element
type
microstrip
component
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.)
Withdrawn
Application number
EP07798675A
Other languages
German (de)
English (en)
Other versions
EP2030284A4 (fr
Inventor
Lowell L. Loyet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Mobility II LLC
Original Assignee
AT&T Mobility II LLC
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 claimed from US11/424,639 external-priority patent/US7630696B2/en
Priority claimed from US11/424,614 external-priority patent/US7764245B2/en
Priority claimed from US11/424,664 external-priority patent/US7277062B1/en
Application filed by AT&T Mobility II LLC filed Critical AT&T Mobility II LLC
Publication of EP2030284A2 publication Critical patent/EP2030284A2/fr
Publication of EP2030284A4 publication Critical patent/EP2030284A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H01P1/2138—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using hollow waveguide filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
    • H01P11/007—Manufacturing frequency-selective devices
    • 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
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/062—Two dimensional planar arrays using dipole aerials
    • 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
    • H01Q9/18—Vertical disposition of the antenna

Definitions

  • the subject matter provides a multi-band antenna for use, for example, in a wireless communications network.
  • Instances of the multi-band antenna provide frequency support for different wireless technologies in a single structure. This substantially reduces installation costs and can be the only solution in limited space installation sites.
  • the multi-band antenna has two serial feedlines carrying respective anode and cathode components of RF signals. Each serial feedline is coupled to two or more different length dipole elements. Each dipole element of a given length attached to the first serial feedline has a corresponding dipole element of approximately equal length attached to the second serial feedline and oriented, with respect to the first dipole element so as to form a dipole. Thus, at least two dipoles of differing lengths are formed, enabling performance in two different bands by the antenna.
  • the gain of the antenna for any particular band is determined by the number of dipoles corresponding to that band contained within the antenna.
  • FIG. 1 is a block diagram of a multi-band antenna system in accordance with an aspect of an embodiment.
  • FIG. 2 is a side view of a multi-band antenna in accordance with an aspect of an embodiment.
  • FIGs. 3 A and 3B illustrate the two sides of the multi-band antenna in accordance with an aspect of an embodiment.
  • FIG. 4 is a side view of the multi-band antenna oriented ninety degrees away from the view depicted in FIG. 2 in accordance with an aspect of an embodiment.
  • FIG. 5 is a diagram of an alternate embodiment of a dual band antenna in accordance with an aspect of an embodiment.
  • FIG. 6 is a diagram illustrating a symmetric embodiment of a multi-band antenna in accordance with an aspect of an embodiment.
  • FIG. 7 is a diagram illustrating a multi-band antenna encased in a radome in accordance with an aspect of an embodiment.
  • FIG. 8 is radiation patterns of a multi-band antenna with and without a parasitic element in accordance with an aspect of an embodiment.
  • FIG. 9 is a system diagram illustrating a communication system in accordance with an aspect of an embodiment.
  • FIG. 1 a block diagram of a multi-band antenna system 100 in accordance with an aspect of an embodiment is shown.
  • the multi-band antenna system 100 is comprised of a multi-band antenna 102 that can transmit and/or receive multiple bands of frequencies from frequency band transceivers 1-N 104-108 that can receive and/or send frequency bands 1-N respectively, where N is an integer from one to infinity.
  • a single multi-band antenna 102 can replace multiple antennas that can only operate at a given frequency and/or can increase communication frequency bands when antenna installation space is limited. This provides a very cost effective and space effective alternative to multiple antenna installations.
  • Multi-band antenna 200 can be implemented as, for example, one of the plurality of towers 930 depicted in FIG. 9.
  • Multi-band antenna 200 is a microstrip multi-band collinear array with dipole elements 201-206, 210-215, and 220-225 arranged on both sides of microstrips 230 and 232 and on both sides of a dielectric substrate 250.
  • the microstrips 230 and 232 and the dipole elements 201-206, 210-215, and 220-225 are constructed from an electrically conducting material (e.g., copper).
  • the elements 201-203, 210-215, and 230 on a first side of the multi-band antenna 200 are illustrated with solid lines and the elements 204-206, 220-225, and 232 on the second side of the multi-band antenna separated from the first side by a dielectric substrate 250 are represented by dashed lines in FIG. 2.
  • the multi-band antenna 200 comprises large and small dipoles each of which corresponds to one of the bands of the antenna.
  • the large dipoles comprise corresponding dipole elements 201 and 204, 202 and 205, and 203 and 206.
  • the small dipoles comprise corresponding dipole elements 210 and 220, 211 and 221, 214 and 224, 215 and 225, 212 and 222, and 213 and 223.
  • Each dipole contains a dipole element on the first side of the dielectric substrate 250 and a second dipole element on the second side of the dielectric substrate separated from each other by the dielectric substrate 250 such as, for example the dipole which contains a dipole element 201 on the first side of the dielectric substrate 250 and a dipole element 204 on the second side of the dielectric substrate 250.
  • the dielectric substrate 250 can be any RF dielectric such as, for example, a PTFE (polytetrafluoroethylene)/fiberglass composite.
  • the two bands of operation from the multi-band antenna 200 can be, for example, cellular 850 MHz and PCS (personal communications service) 1900 MHz Frequency bands where the larger dipole elements, such as, for example, dipole element 201, radiate the 850 MHz signal and the smaller dipole elements, such as, for example, dipole element 210, radiate the 1900 MHz signal.
  • the distance between successive dipoles of the same band should be no less than 1/2 the wavelength ( ⁇ ) and should not be greater than one ⁇ . However, between these two extremes, the separation distance can be varied to optimize the antenna 200 for maximum performance.
  • 210-215 and 220-225 should match the impedance of free space, e.g., 377 ohms.
  • the physical length of each dipole element 201-206, 210-215, and 220-225 is determined by the frequency that each dipole is intended to radiate.
  • the ratio of the number of shorter dipoles to the longer dipoles is variable and depends upon the gain desired at each frequency.
  • the number of dipoles of each type is determined by the amount of gain that is desired. For example, doubling the number of dipoles of one type results in a 3dB signal gain at the frequency of interest.
  • the coaxial ground and center conductor signals received, typically via a coaxial cable, from a transmitter (not shown) are placed on respective microstrip feedlines for microstrips 230 and 232.
  • the impedance of the feedlines 230 and 232 should match the impedance of the coaxial cable and/or other transmission medium that feeds the signal from the transmitter to the feedlines for microstrips 230 and 232.
  • this impedance is typically around 50 ohms.
  • a feed structure for feeding ground and pin signals from an RF combiner can be designed to be, for example, a microstrip, a stripline, or a coax design with a single RF connector at one end of the multi-band antenna 200.
  • the multi-band antenna 200 can also have a cylindrical radome 240 placed over the antenna structure for weather proofing.
  • the shorter dipoles can be laid out so that they are on both sides of the main feedlines for microstrips 230 and 232, and the longer dipoles can also be laid out so that they are on both sides of the main feedlines for microstrips 230 and 232.
  • An example of such a modification can be achieved by replacing shorter dipole elements 210-211 and 220-221 with a single larger set of corresponding dipole elements of substantially equivalent size as dipole elements 201 and 204; replacing longer dipole elements 202 and 205 with two pairs of corresponding shorter dipole elements similar to dipole elements 214-215 and 224-225; and replacing shorter dipole elements 212-213 and 222-223 with a pair of corresponding longer dipole elements.
  • Such a modification can provide a more omni radiation pattern.
  • FIG. 3 A depicts side 1 on the multi-band antenna 200.
  • FIG. 3B depicts side 2 of the multi- band antenna 200. Both the views in FIG. 3A and FIG. 3B are from the same side, but represent a different cross-section of multi-band antenna 200. In between the two cross-sections shown in FIG. 3 A and FIG. 3B is a layer of dielectric material 250.
  • the pattern of the microstrips 230 and 232, and the dipole elements 201-206, 210- 215, and 220-225 is etched or otherwise formed in a dielectric substrate 250 and a electrically conductive material such as, for example, copper is deposited onto each side of the dielectric substrate 250 to form the multi-band antenna 200.
  • a reverse mask acid etch can be performed in order to form the appropriate pattern of feedlines and dipole elements. It can be appreciated that although only two microstrips are provided in this example, more than two microstrips can be utilized to create additional frequency bands for the multi-band antenna 200. [0018] With reference now to FIG. 4, a side view of the multi-band antenna
  • FIG. 5 a diagram of an alternate construction of the multi-band antenna 200 is illustrated.
  • Antenna 500 is similar to multi-band antenna 200 depicted in FIGs. 2-4 and is shown from the same perspective as the perspective of FIG. 4.
  • FIG. 6 a diagram illustrating a symmetric embodiment of a multi-band antenna is depicted in accordance with an aspect of an embodiment.
  • the multi-band antenna depicted in FIG. 2 is an asymmetric configuration of a dual-band antenna.
  • Antenna 600 is an example of a symmetric dual-band antenna.
  • the dipole elements 610-617 are arranged such that on one side of the microstrip 650 and within the plane of the microstrip 650 is a mirror image dipole element of the dipole element on the other side of the microstrip 650 and in the plane of microstrip 602 (which is beneath microstrip 650 when viewed as depicted in FIG. 6).
  • two short dipoles are formed on either side of microstrip 650 by dipole elements 610-613 (e.g., the pair of elements 610 and 611 form a dipole and the pair of elements 612 and 613 form a dipole) and two short dipoles are formed on either side of microstrip 650 by dipole elements 614-617 (e.g., the pair of dipole elements 614 and 615 form a dipole and the pair of elements 616 and 617 form a dipole).
  • Two longer dipoles are formed by elements 620-623 (e.g., the pair of dipole elements 620 and 621 from one dipole and the pair of dipole elements 622 and 623 form a second dipole).
  • All of the elements 602, 610-617, 620-623, and 650 are formed within a dielectric material 660.
  • the dielectric material 660 also physically separates elements 610, 612, 614, 616, 620, 622, and 650 from elements 602, 611, 613, 615, 617, 621, and 623.
  • Antenna 704 is a multi-band antenna such as, for example, multi-band antenna 200 in FIG. 2 and is encased within a radome 706 having a parasitic element 702 attached to the outside. Without the parasitic element 702, the radiation pattern of antenna 704 is more elliptical and similar to a radiation pattern 804 depicted in FIG. 8. However, with the addition of parasitic element 702, the radiation pattern produced by antenna 704 becomes more circular and omni-directional as depicted by radiation pattern 802 in FIG. 8.
  • the antennas depicted in FIGs. 2-6 are examples of multi-band antennas with dual bands. Dual-band antennas have been shown for simplicity of explanation. However, these antennas are presented and intended only as examples of a multi-band antenna and not as architectural limitations. It is appreciated that the instances presented above can be extended to antennas having three, four, or more operation bands by adding additional dipole elements of lengths corresponding to the additional bands desired.
  • FIG. 9 and the following discussion are intended to provide a brief, general description of a suitable communication network 900 in which the various aspects of the embodiments can be performed. It can be appreciated that the inventive structures and techniques can be practiced with other system configurations as well.
  • FIG. 9 a system diagram illustrating a communications network 900 in accordance with an aspect of an embodiment is depicted.
  • the communications network 900 is a plurality of interconnected heterogeneous networks in which instances provided herein can be implemented.
  • communications network 900 contains an Internet Protocol (IP) network 902, a Local Area Network (LAN) / Wide Area Network (WAN) 904, a Public Switched Telephone Network (PSTN) 909, cellular wireless networks 912 and 913, and a satellite communication network 916.
  • IP Internet Protocol
  • LAN Local Area Network
  • WAN Wide Area Network
  • PSTN Public Switched Telephone Network
  • Networks 902, 904, 909, 912, 913 and 916 can include permanent connections, such as wire or fiber optic cables, and/or temporary connections made through telephone connections. Wireless connections are also viable communication means between networks.
  • IP network 902 can be a publicly available IP network (e.g. , the
  • IP network 902 typically operates according to the Internet Protocol (IP) and routes packets among its many switches and through its many transmission paths. IP networks are generally expandable, fairly easy to use, and heavily supported. Coupled to IP network 902 is a Domain Name Server (DNS) 908 to which queries can be sent, such queries each requesting an IP address based upon a Uniform Resource Locator (URL). IP network 902 can support 32 bit IP addresses as well as 128 bit IP addresses and the like.
  • DNS Domain Name Server
  • LAN/WAN 904 couples to IP network 902 via a proxy server 906 (or another connection).
  • LAN/WAN 904 can operate according to various communication protocols, such as the Internet Protocol, Asynchronous Transfer Mode (ATM) protocol, or other packet switched protocols.
  • Proxy server 906 serves to route data between IP network 902 and LAN/WAN 904.
  • a firewall that precludes unwanted communications from entering LAN/WAN 904 can also be located at the location of proxy server 906.
  • Computer 920 couples to LAN/WAN 904 and supports communications with LAN/WAN 904.
  • Computer 920 can employ the LAN/WAN 904 and proxy server 906 to communicate with other devices across IP network 902. Such communications are generally known in the art and are described further herein.
  • phone 922 couples to computer 920 and can be employed to initiate IP telephony communications with another phone and/or voice terminal using IP telephony.
  • An IP phone 954 connected to IP network 902 (and/or other phone, e.g., phone 924) can communicate with phone 922 using IP telephony.
  • PSTN 909 is a circuit switched network that is primarily employed for voice communications, such as those enabled by a standard phone 924.
  • PSTN 909 also supports the transmission of data.
  • PSTN 909 can be connected to IP Network 902 via gateway 910.
  • Data transmissions can be supported to a tone based terminal, such as a FAX machine 925, to a tone based modem contained in computer 926, or to another device that couples to PSTN 909 via a digital connection, such as an Integrated Services Digital Network (ISDN) line, an Asynchronous Digital Subscriber Line (ADSL), IEEE 802.16 broadband local loop, and/or another digital connection to a terminal that supports such a connection and the like.
  • ISDN Integrated Services Digital Network
  • ADSL Asynchronous Digital Subscriber Line
  • IEEE 802.16 broadband local loop
  • a voice terminal such as phone 928
  • Computer 926 can support IP telephony with voice terminal 928, for example.
  • Cellular networks 912 and 913 support wireless communications with terminals operating in their service area (which can cover a city, county, state, country, etc.). Each of cellular networks 912 and 913 can operate according to a different operating standard utilizing a different frequency (e.g., 850 and 1900 MHz) as discussed in more detail below.
  • Cellular networks 912 and 913 can include a plurality of towers, e.g., 930, that each provide wireless communications within a respective cell. At least some of the plurality of towers 930 can include a multi-band antenna allowing a single antenna to service both networks' 912 and 913 client devices.
  • Wireless terminals that can operate in conjunction with cellular network 912 or 913 include wireless handsets 932 and 933 and wirelessly enabled laptop computers 934, for example.
  • Wireless handsets 932 and 933 can be, for example, personal digital assistants, wireless or cellular telephones, and/or two-way pagers and operate using different wireless standards.
  • wireless handset 932 can operate via a TDMA/GSM standard and communicate with cellular network 912 while wireless handset 933 can operate via a UMTS standard and communicate with cellular network 913
  • Cellular networks 912 and 913 couple to IP network 902 via gateways 914 and 915 respectively.
  • Wireless handsets 932 and 933 and wirelessly enabled laptop computers 934 can also communicate with cellular network 912 and/or cellular network 913 using a wireless application protocol (WAP).
  • WAP is an open, global specification that allows mobile users with wireless devices, such as, for example, mobile phones, pagers, two-way radios, smart phones, communicators, personal digital assistants, and portable laptop computers and the like, to easily access and interact with information and services almost instantly.
  • WAP is a communications protocol and application environment and can be built on any operating system including, for example, Palm OS, EPOC, Windows CE, FLEXOS, OS/9, and JavaOS. WAP provides interoperability even between different device families.
  • WAP is the wireless equivalent of Hypertext Transfer Protocol (HTTP) and Hypertext Markup Language (HTML).
  • HTTP-like component defines the communication protocol between the handheld device and a server or gateway. This component addresses characteristics that are unique to wireless devices, such as data rate and round-trip response time.
  • HTML-like component commonly known as Wireless Markup Language (WML)
  • WML Wireless Markup Language
  • Each of Cellular network 912 and 913 operates according to an operating standard, which can be different from each other, and which may be, for example, an analog standard (e.g., the Advanced Mobile Phone System (AMPS) standard), a code division standard (e.g., the Code Division Multiple Access (CDMA) standard), a time division standard (e.g., the Time Division Multiple Access (TDMA) standard), a frequency division standard (e.g., the Global System for Mobile Communications (GSM)), or any other appropriate wireless communication method.
  • cellular network 912 supports voice and data communications with terminal units, e.g., 932, 933, and 934.
  • terminal units e.g., 932, 933, and 934.
  • cellular network 912 and 913 have been shown and discussed as completely separate entities. However, in practice, they often share resources.
  • Satellite network 916 includes at least one satellite dish 936 that operates in conjunction with a satellite 938 to provide satellite communications with a plurality of terminals, e.g., laptop computer 942 and satellite handset 940. Satellite handset 940 could also be a two-way pager. Satellite network 916 can be serviced by one or more geosynchronous orbiting satellites, a plurality of medium earth orbit satellites, or a plurality of low earth orbit satellites. Satellite network 916 services voice and data communications and couples to IP network 902 via gateway 918.
  • FIG. 9 is intended as an example and not as an architectural limitation for instances disclosed herein. For example, communication network 900 can include additional servers, clients, and other devices not shown. Other interconnections are also possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Manufacturing & Machinery (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)

Abstract

Une antenne multi-bandes destinée à être utilisée dans un réseau de communication sans fil fournit un support de fréquence pour différentes technologies sans fil renfermées dans une seule structure, réduisant ainsi de façon substantielle les coûts d'installation et constituant la seule solution dans des sites d'installation où l'espace est limité. Dans un exemple, l'antenne multi-bandes comporte deux lignes d'alimentation en série portant des composants anode et cathode respectifs de signaux radio-fréquence. Chaque ligne d'alimentation comporte une ligne d'alimentation en série et est couplée à au moins deux éléments dipolaires de longueur différente. Chaque élément dipolaire d'une longueur donnée fixé à la première ligne d'alimentation en série comporte un élément dipolaire correspondant, de longueur approximativement égale, fixé à la seconde ligne d'alimentation en série et orienté par rapport au premier élément dipolaire, de façon à former un dipôle. Au moins deux dipôles de longueurs différentes sont ainsi formés, dotant l'antenne d'un effet utile dans deux bandes différentes. Pour toute bande particulière, le nombre de dipôles correspondant à la bande contenue à l'intérieur de l'antenne détermine si l'antenne acquiert un effet utile.
EP07798675A 2006-06-16 2007-06-16 Antenne multi-bandes Withdrawn EP2030284A4 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11/424,639 US7630696B2 (en) 2006-06-16 2006-06-16 Multi-band RF combiner
US11/424,614 US7764245B2 (en) 2006-06-16 2006-06-16 Multi-band antenna
US11/424,664 US7277062B1 (en) 2006-06-16 2006-06-16 Multi-resonant microstrip dipole antenna
PCT/US2007/071413 WO2007147153A2 (fr) 2006-06-16 2007-06-16 antenne multi-bandes

Publications (2)

Publication Number Publication Date
EP2030284A2 true EP2030284A2 (fr) 2009-03-04
EP2030284A4 EP2030284A4 (fr) 2009-06-10

Family

ID=38832929

Family Applications (3)

Application Number Title Priority Date Filing Date
EP07798675A Withdrawn EP2030284A4 (fr) 2006-06-16 2007-06-16 Antenne multi-bandes
EP07845210A Withdrawn EP2030377A4 (fr) 2006-06-16 2007-06-16 Combineur rf à bandes multiples
EP07840256A Withdrawn EP2030285A4 (fr) 2006-06-16 2007-06-16 Antenne dipôle à microbande à résonances multiples

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP07845210A Withdrawn EP2030377A4 (fr) 2006-06-16 2007-06-16 Combineur rf à bandes multiples
EP07840256A Withdrawn EP2030285A4 (fr) 2006-06-16 2007-06-16 Antenne dipôle à microbande à résonances multiples

Country Status (3)

Country Link
EP (3) EP2030284A4 (fr)
CA (3) CA2648256A1 (fr)
WO (3) WO2007147153A2 (fr)

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016536A (en) * 1958-05-14 1962-01-09 Eugene G Fubini Capacitively coupled collinear stripline antenna array
CA2049597A1 (fr) * 1990-09-28 1992-03-29 Clifton Quan Radiateur dielectrique evase a fentes a ports d'emission et de reception distincts
JP3324243B2 (ja) * 1993-03-30 2002-09-17 三菱電機株式会社 アンテナ装置およびアンテナシステム
SE9601955L (sv) * 1996-05-23 1997-09-08 Ericsson Telefon Ab L M Vågledaranordning och förfarande för dess framställning
US5894250A (en) * 1997-03-20 1999-04-13 Adc Solitra, Inc. Cavity resonator filter structure having improved cavity arrangement
US6658263B1 (en) * 1999-12-21 2003-12-02 Lucent Technologies Inc. Wireless system combining arrangement and method thereof
JP2001185938A (ja) * 1999-12-27 2001-07-06 Mitsubishi Electric Corp ２周波共用アンテナ、多周波共用アンテナ、および２周波または多周波共用アレーアンテナ
US6469677B1 (en) * 2001-05-30 2002-10-22 Hrl Laboratories, Llc Optical network for actuation of switches in a reconfigurable antenna
US6734828B2 (en) * 2001-07-25 2004-05-11 Atheros Communications, Inc. Dual band planar high-frequency antenna
GB0224341D0 (en) * 2002-10-19 2002-11-27 Qinetiq Ltd Mobile radio base station
JP4083462B2 (ja) * 2002-04-26 2008-04-30 原田工業株式会社 マルチバンドアンテナ装置
US6996379B2 (en) * 2002-07-23 2006-02-07 Broadcom Corp. Linear high powered integrated circuit transmitter
JP3752230B2 (ja) * 2003-02-14 2006-03-08 Ｔｄｋ株式会社 フロントエンドモジュール
JP2004282329A (ja) * 2003-03-14 2004-10-07 Senyu Communication:Kk 無線ｌａｎ用デュアルバンド全方向性アンテナ
US7197336B2 (en) * 2003-06-30 2007-03-27 Intel Corporation Method and apparatus to combine radio frequency signals
JP4181067B2 (ja) * 2003-09-18 2008-11-12 Ｄｘアンテナ株式会社 多周波数帯アンテナ
US7064729B2 (en) * 2003-10-01 2006-06-20 Arc Wireless Solutions, Inc. Omni-dualband antenna and system
US6989785B2 (en) * 2003-10-06 2006-01-24 General Motors Corporation Low-profile, multi-band antenna module
US20050093647A1 (en) * 2003-10-31 2005-05-05 Decormier William A. Twinned pseudo-elliptic directional filter method and apparatus
EP1544938A1 (fr) * 2003-12-19 2005-06-22 Alcatel Filtre à cavités multiples
US6992632B1 (en) * 2004-03-09 2006-01-31 Itt Manufacturing Enterprises, Inc. Low profile polarization-diverse herringbone phased array
FI117684B (fi) * 2004-12-02 2007-01-15 Filtronic Comtek Oy Antennipään suodatinjärjestely

Also Published As

Publication number Publication date
EP2030285A4 (fr) 2009-06-03
WO2007147153A2 (fr) 2007-12-21
WO2007149794A2 (fr) 2007-12-27
WO2008024551A2 (fr) 2008-02-28
EP2030377A4 (fr) 2009-11-18
EP2030285A2 (fr) 2009-03-04
CA2648256A1 (fr) 2008-02-28
CA2648259A1 (fr) 2007-12-27
EP2030284A4 (fr) 2009-06-10
WO2008024551A3 (fr) 2008-12-11
EP2030377A2 (fr) 2009-03-04
CA2648255A1 (fr) 2007-12-21
WO2007149794A3 (fr) 2009-01-15
WO2007147153A3 (fr) 2008-03-06

Similar Documents

Publication Publication Date Title
US7764245B2 (en) Multi-band antenna
US7884775B1 (en) Multi-resonant microstrip dipole antenna
US8452248B2 (en) Multi-band RF combiner
US7705787B2 (en) Coupled slot probe antenna
US6337666B1 (en) Planar sleeve dipole antenna
US6529749B1 (en) Convertible dipole/inverted-F antennas and wireless communicators incorporating the same
US8564491B2 (en) Wideband high gain antenna
KR101212354B1 (ko) 밀리미터파 통신 디바이스 및 멀티포인트 무선 통신 디바이스
EP2272128B1 (fr) Antenne de radiateur à entaille diélectrique à gain élevé à large bande
Wu et al. Switchable quad-band antennas for cognitive radio base station applications
US8803742B2 (en) Dual-band MIMO antenna system
US5926149A (en) Coaxial antenna
He et al. A novel broadband dual-polarized antenna element for LTE700 MHz/GSM850 MHz/GSM900 MHz applications
KR100518035B1 (ko) 외장형 마이크로 칩 듀얼밴드 안테나
Arai et al. Cellular and PHS base station antenna systems
EP2030284A2 (fr) Antenne multi-bandes
US8912967B2 (en) Wideband high gain antenna for multiband employment
Agarwal et al. Simulation and Analysis of 5G Mobil Phones Antenna
Paul et al. A low-volume star-slotted patch array antenna for WiMAX/5G communication
CN120073290A (zh) 具有交织的自立式天线辐射器的通信终端
TW200838034A (en) WiMAX base station antenna structure design

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20081010

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

A4 Supplementary search report drawn up and despatched

Effective date: 20090512

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 20090819

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20091230