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WO2008005703A2 - Appareil d'antenne - Google Patents

Appareil d'antenne Download PDF

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Publication number
WO2008005703A2
WO2008005703A2 PCT/US2007/071847 US2007071847W WO2008005703A2 WO 2008005703 A2 WO2008005703 A2 WO 2008005703A2 US 2007071847 W US2007071847 W US 2007071847W WO 2008005703 A2 WO2008005703 A2 WO 2008005703A2
Authority
WO
WIPO (PCT)
Prior art keywords
conducting
conducting portion
antenna
antenna apparatus
board
Prior art date
Application number
PCT/US2007/071847
Other languages
English (en)
Other versions
WO2008005703B1 (fr
WO2008005703A3 (fr
Inventor
Maksim Berezin
Motti Elkobi
Aviv Shachar
Original Assignee
Motorola, Inc.
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 Motorola, Inc. filed Critical Motorola, Inc.
Publication of WO2008005703A2 publication Critical patent/WO2008005703A2/fr
Publication of WO2008005703A3 publication Critical patent/WO2008005703A3/fr
Publication of WO2008005703B1 publication Critical patent/WO2008005703B1/fr

Links

Classifications

    • 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
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • 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
    • 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
    • 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
    • H01Q5/378—Combination of fed elements with parasitic elements
    • 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
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration

Definitions

  • the present invention relates to antenna apparatus,
  • the invention relates to antenna apparatus for a wireless communication device, and more particularly a portable or handheld communication device .
  • Portable handheld wireless communication devices such as cellular telephones, portable radios, data communication devices, and the like employ an antenna to radiate and receive electromagnetic signals transmitted over the air.
  • Monopole antennas are widely used as RF (radio frequency) radiators in such communication devices.
  • RF radio frequency
  • the space available in a portable communication device for the antenna will decrease, since the overall size of the device will continue to decrease and/or the device will have to accommodate other functional components at the expense of the antenna.
  • reducing the size of the antenna may negatively impact upon its antenna gain. This follows from the fact that an antenna is used to transform a bounded wave into a radiating wave and vice versa. This requires careful selection of where components are placed in the communication device to give suitable operation of the antenna.
  • antenna apparatus as defined in claim 1 of the accompanying claims.
  • FIG. 1 is a front view of an RF communication device incorporating antenna apparatus embodying the invention .
  • FIG. 2 is a rear perspective view of the communication device of FIG. 1 with part of a casing of the device removed to show internal components of the device including components of antenna apparatus embodying the invention.
  • FIG. 3 is an enlarged perspective view of an assembly shown in FIG. 2 removed from the communication device .
  • FIG. 4 is an enlarged perspective view of a sub- assembly of the assembly shown in FIG. 3.
  • FIG. 5 is an enlarged view of an antenna board of the sub-assembly of FIG 4.
  • FIG. 6 is a view of a rear surface of the antenna board of FIG. 5.
  • FIG. 7 is a graph of VSWR (voltage standing wave ratio) versus frequency for a specific illustrative antenna apparatus embodying the invention.
  • FIG. 8 shows a plot in two dimensions in a y-z plane illustrating the omnidirectional radiation pattern obtained in that plane by a specific illustrative antenna apparatus embodying the invention in a first frequency range .
  • FIG. 9 shows a plot in two dimensions in an x-z plane illustrating the omnidirectional radiation pattern obtained in that plane in a first frequency range by the same specific illustrative antenna apparatus which produced the plot in FIG. 8.
  • FIG. 10 shows a plot in two dimensions in an x-y plane illustrating the omnidirectional radiation pattern obtained in that plane in a first frequency range by the same specific illustrative antenna apparatus which produced the plot in FIG. 8.
  • FIG. 11 shows a plot in two dimensions in a y-z plane illustrating the omnidirectional radiation pattern obtained in that plane in a second frequency range by the same specific illustrative antenna apparatus which produced the plot in FIG. 8.
  • FIG. 12 shows a plot in two dimensions in an x-z plane illustrating the omnidirectional radiation pattern obtained in that plane in a second frequency range by the same specific illustrative antenna apparatus which produced the plot in FIG. 8.
  • FIG. 13 shows a plot in two dimensions in an x-y plane illustrating the omnidirectional radiation pattern obtained in that plane in a second frequency range by the same specific illustrative antenna apparatus which produced the plot in FIG. 8.
  • Skilled artisans will appreciate that elements or components shown in the drawings are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements shown in the figures may be exaggerated relative to other elements to help to improve understanding of embodiments of the present invention. Skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the drawings may be exaggerated relative to other elements to help to improve understanding of embodiments of the present invention .
  • an antenna apparatus for a wireless communication device comprises an insulating antenna substrate having on a first surface thereof a first conducting portion providing a first radiator and on a second surface thereof a second conducting portion providing a second radiator, the first conducting portion and the second conducting portion being galvanically unconnected, the insulating antenna substrate also having thereon a first part of a conducting ground plane comprising a third conducting portion, the apparatus also including, galvanically connected to the first part of the conducting ground plane, a second part of the conducting ground plane, the second part of the conducting ground plane comprising a conducting support member, the insulating substrate being separated from but supported on the conducting support member.
  • the first conducting ground portion may include, galvanically connected to the third conducting portion, a fourth conducting portion.
  • the antenna apparatus embodying the invention may be operable to provide transmission and/or reception of electromagnetic radiation signals in a first operational frequency range with omnidirectional radiation patterns for three mutually orthogonal directions of the polarization vector (e.g. axes x, y and z referred to later with reference to FIG. 4) and transmission and/or reception of electromagnetic radiation signals in a second operational frequency range also with omnidirectional radiation patterns for three mutually orthogonal directions of the polarization vector.
  • the second frequency range may have a centre frequency which is substantially higher in frequency than a centre frequency of the first frequency range.
  • the first radiator and the second radiator may comprise quarter wave resonators.
  • FIG. 1 is a front view of an illustrative radio wireless communication device 100 incorporating antenna apparatus embodying the invention.
  • the device 100 is a handset for data and/or voice communications and includes a casing 103. It will be appreciated by those of ordinary skill in the art that the invention is further applicable to any wireless communication device.
  • a front surface 107 of the casing 103 includes in a lower region a keypad 109 and various buttons and control actuators 110 for data entry and function control.
  • the front surface 107 includes in an upper region a display 111 for the display of data.
  • FIG. 2 is a rear perspective view (shown from behind the front face 107 of the casing 103) .
  • a rear portion of the casing 103 is removed to show components mounted internally in the casing 103.
  • the end of the casing 103 shown to the right in FIG. 2 corresponds to the upper end shown in FIG. 1.
  • Fitted inside an enclosure formed by the casing 103 is a chassis 201 formed of lightweight conducting metallic material which serves to hold internal components of the device 100.
  • a board 203 e.g. made of printed circuit board material, having a conducting surface extends lengthwise inside the device 100 on the chassis 201.
  • the board 203 is held by various fixing members, including, attached to the chassis 201, a clip 205, blocks 207 and studs 209.
  • FIG. 3 is an enlarged perspective view of the assembly 211 removed from the device 100.
  • the assembly 211 is formed on a conducting support member 301.
  • One function of the conducting support member 301 is to fix and galvanically connect the assembly 311 to the chassis 201 through the board 203 (FIG. 2) . This is achieved by studs made of conducting material (not shown) fitted through holes 303 (one of which is shown in FIG. 3) formed in flanges 304 (one of which is shown in FIG. 3) .
  • the conducting support member 301 together with a conducting layer 305 beneath the conducting support member 301 may also form a protective housing for a component device of the communication device 100, such as a radio transceiver (not shown) formed on the board 203.
  • the conducting support member 301 also forms part of antenna apparatus embodying the invention to be described later.
  • the conducting support member 301 and the conducting layer 305 provide additional galvanic connection between conducting material of the board 203 and part of an electrically conducting ground plane of an antenna board which forms part of antenna apparatus embodying the invention to be described later.
  • An imager device 307 is provided at the upper end (the front end as shown in FIG. 3) of the device 100. Such a device may for example be used for data collection by bar code reading in a known manner.
  • the imager device 307 includes several sub-components including a first insulating board 309, such as a printed circuit board, having a portion of conducting material (not shown) formed thereon, e.g. from a shaped metallic layer of conducting material such as copper.
  • the imager device 307 also includes, separated from the first insulating board 309, a second insulating board 310, which may also be a printed circuit board having a portion of conducting material (not shown) formed thereon, e.g. from a shaped metallic layer of conducting material such as copper.
  • the conducting materials on the first insulating board 309 and the second insulating board 310 are parasitic conductors which form part of antenna apparatus embodying the invention and are referred to later.
  • the imager device 307 is held in position by an insulating holder 311 fixed to the chassis 201 by studs made of conducting material (not shown) fitted through the holes 303 in the flanges 304.
  • An antenna sub- assembly 313 is fitted on the conducting support member 301.
  • FIG. 4 An enlarged, more detailed perspective view of the antenna sub-assembly 313 is shown in FIG. 4.
  • the antenna sub-assembly 313 in FIG. 4 is shown removed from the other components of the assembly 211 apart from the conducting support member 301.
  • a layer 401 of dielectric material is deposited on the conducting support member 301.
  • the sub-assembly 313 includes an antenna board 403 which serves as the insulating antenna substrate referred to earlier.
  • the antenna board 403, e.g. made from printed circuit board material, is held a fixed distance away from the conducting support member 301 by the layer 401 and by insulating support columns 405 (one of which is shown in FIG. 5) and screws 407 fitted to the support columns 405.
  • the antenna board 403 and the conducting support member 301 have facing surfaces which are parallel.
  • the antenna board 403 is shaped to fit into the internal layout of the device 100.
  • a coaxial cable 409 is welded by soldering to the antenna board 403.
  • the coaxial cable 409 delivers radio frequency signals between the antenna board 403 and an RF transceiver (not shown) of the device 100, which may for example be housed inside an enclosure formed by the support member 301 and the conducting layer 305.
  • a connector 411 comprising a conducting shorting pin extends vertically from the antenna board 403 and provides a galvanic connection between the antenna board 403 and the conducting support member 301.
  • the connector 411 is part of antenna apparatus embodying the invention and is referred to later.
  • Cartesian coordinate axes x, y and z which are fixed relative to the construction of the device 100.
  • the axis x is parallel to the longer sides of the antenna board 403.
  • the axis y is perpendicular to the axis x and is also in the plane of the antenna board 403; it is parallel to an axis of the casing 103.
  • the axis z is perpendicular to the axes x and y and is parallel to the support columns 405 extending vertically between the conducting support member 301 and the antenna board 403.
  • the axes x, y and z are referred to later.
  • FIG. 5 is an enlarged view of a surface of the antenna board 403 as seen from the rear of the casing 103 (FIG. 1)
  • FIG 6 is an enlarged view of an opposite surface of the antenna board 403.
  • the surface of the antenna board 403 shown in FIG. 5 will be referred to as the front surface as it is the surface seen when the antenna board 403 is fitted in the device 100 as shown in FIG. 3.
  • the surface shown in FIG. 6 will be referred to as the rear surface as it is behind the front surface.
  • a first conducting portion 501 which serves as a first radiator is formed on the front surface of the antenna board 403.
  • the first conducting portion 501 is in the form of an elongate conducting strip, for example formed of deposited metallic material such as copper, having a shape which has three sides and approximates to a ⁇ U' shape so that its length is accommodated on the limited surface are area available on the antenna board 403.
  • a conducting region 503 of enlarged area (relative to the area per unit length of the first portion 501) is formed at an end of the first conducting portion 501.
  • the conducting region 503 serves as a land or feed point to which an inner ( ⁇ live' ) conductor 505 of the coaxial cable 409 is welded, e.g. by soldering 507, for delivery of radio frequency signals to or from the first conducting portion 501.
  • a second conducting portion 502 indicated by a dashed line in FIG.
  • the second conducting portion 502 serves as a second radiator.
  • the second conducting portion 502 is not galvanically connected to the first conducting portion 501.
  • the second conducting portion 502 has a selected shape as shown in FIG. 6 including a sloping side 513, for enhancing bandwidth of the resonance obtained in two desired frequency ranges as illustrated later with reference to FIG. 7.
  • the insulating antenna board 403 has thereon further conducting portions which form part of an electrically conducting ground plane of antenna apparatus embodying the invention. This is the first part of the conducting ground plane referred to earlier.
  • the further conducting portions forming part of this ground plane part comprise (i) a third conducting portion 509 which is formed on the front surface of the antenna board 403 in an upper corner region thereof as shown in FIG. 5; and (ii) a fourth conducting portion 512 which is formed on the rear surface of the antenna board 403 in an upper corner region thereof as shown in FIG. 6.
  • the fourth conducting portion 512 is located directly behind the third conducting portion 509 and has a shape and size which, in reverse, match the shape and size of the third conducting portion 509 whereby the third conducting portion 509 when projected onto the fourth conducting portion 512 has an outline which coincides with that of the fourth conducting portion 512.
  • Conducting vias 511 which pass through the insulating antenna board 403 provide galvanic connections between the third conducting portion 509 and the fourth conducting portion 512.
  • the first conducting portion 501 does not have a galvanic connection to the ground plane part comprising the third conducting portion 509 and the fourth conducting portion 512.
  • the second conducting portion 502 is galvanically connected to the fourth conducting portion 512.
  • the second conducting portion 502 and the fourth conducting portion may comprise a common conducting portion.
  • a dashed line 514 in FIG. 6 indicates a notional boundary between the second conducting portion 502 and the fourth conducting portion 512.
  • the coaxial cable 409 has an insulating sleeve 506 from which the inner conductor 505 emerges to be welded at the soldering 507.
  • the insulating sleeve 506 carries an outer conductor 508, e.g. in the form of a conventional braided multiwire, which is welded to the third portion 509 by soldering 510.
  • the communication device 100 which has been described above with reference to FIGS. 1 to 6 includes antenna apparatus embodying the invention including the following primary parts:
  • the antenna board 403 including thereon the first conducting portion 501, the second conducting portion 502 and the electrically conducting ground plane part formed comprising at least the third conducting portion 509 (and optionally the fourth conducting portion 512 connected to the third conducting portion by the conducting vias 511);
  • An RF (radio frequency) signal for transmission is delivered from an RF transceiver (not shown) by the coaxial cable 409 and is coupled by the soldering 507 at the region 503 of enlarged area into the first conducting portion 501 from the inner conductor 505 and by the soldering 510 of the outer conductor 508 to the third portion 509.
  • the first conducting portion 501 of the antenna board 403 has an electrical length which is equivalent to a quarter wave at the wavelength of a centre frequency of operation in the lower frequency range and thereby provides a quarter wave radiator in that range.
  • the second conducting portion 502 which has galvanic connection to the third conducting portion 509, has an electrical length which is equivalent to a quarter wave at the wavelength of a centre frequency of operation in the higher frequency range and thereby provides a quarter wave radiator in that range. There is a difference between the electrical lengths of the first conducting portion 501 and the second conducting portion 502 which is equivalent to a quarter wave at the wavelength of a central frequency of operation in the higher frequency range.
  • RF signals for transmission by the second conducting portion 502 are delivered via the coaxial cable 509 to the third conducting portion 509 and through the conduction vias 511 to the fourth conducting portion 512 and are galvanically coupled into the second conducting portion 502.
  • RF radiation signals received in an incoming direction, by the first conducting portion 501 and the second conducting portion 502 are coupled into the coaxial cable 509 and are delivered by the coaxial cable 509 to the RF transceiver (not shown) of the device 100.
  • the third conducting portion 509 and the fourth conducting portion 512 galvanically connected to the third conducting portion 509 by the vias 511, form an electrically conducting ground plane part on the insulating antenna board 503.
  • a ground plane (alternatively known as a counterpoise) is a conducting surface (not necessarily a planar surface) needed for the antenna to operate efficiently.
  • the ground plane of the antenna apparatus embodying the invention is completed by further parts galvanically connected by the connector 411 to the part comprising the third conducting portion 509 and the fourth conducting portion 512 and the conducting support member 301.
  • the further parts comprise a galvanically connected combination of the conducting support member 301, the conducting material on the insulating board 203 and the chassis 201. These further parts are referred to collectively herein as the 'second' part of the ground plane.
  • RF electrical currents flow in the x-y plane, principally along the axes x and y, defined by the axes x, y, and z shown in FIG. 4.
  • RF electrical currents flow in the x-y plane, principally along the axes x and y, defined by the axes x, y, and z shown in FIG. 4.
  • the vertical separation along the z axis (as shown in FIG. 4) between (i) the conducting support member 301 and (ii) the conducting portions 501, 502 and the electrically conducting ground plane part of the insulating antenna board 403; is selected to create electromagnetic fields having an omnidirectional radiation pattern, as illustrated by gain results given later, with polarization vector component along the z axis.
  • the vertical separation is selected to be from 0.03 ⁇ (three hundredths of ⁇ ) to 0.05 ⁇ (five hundredths of ⁇ ) where X is the wavelength for the centre frequency of operation of the lower frequency range. This is equivalent to from 0.06X 1 to 0.1X 1 , where X 1 is the wavelength at the centre frequency of the higher frequency range .
  • an electromagnetic radiation pattern is produced by the antenna apparatus embodying the invention in both of the low and high frequency ranges which is omnidirectional in three dimensions, as represented by the x, y and z axes, of the polarization vector of the radiation.
  • Frequency Range 1 from 824 (eight hundred and twenty four) MHz (Megahertz) to 960 (nine hundred and sixty) MHz; and Frequency Range 2 from 1710 (one thousand, seven hundred and ten) MHz to 1990 (one thousand, nine hundred ninety) MHz.
  • the Frequency Range 1 embraces operation in the following well known system types: GSM (Global System for Mobile communications) and GPRS (General Packet Radio service) and CDMA (Code Division Multiple Access) .
  • the Frequency Range 2 embraces operation in the following well known system types operating at different frequencies: CDMA, GSM, and GPRS.
  • CDMA Code Division Multiple Access
  • GSM Global System for Mobile Communications
  • GPRS General Packet Radio Service
  • other specific examples of the antenna apparatus embodying the invention can, by use of suitable design scaling well known in the art, be targeted at operation in other frequency ranges such as covering 2.4 GHz (GigaHertz) for use in Bluetooth (RTM) or WLAN (Wireless Local Area Network) systems or 4.9 GHz for use in other WLAN systems.
  • RTM Bluetooth
  • WLAN Wireless Local Area Network
  • the antenna apparatus had the following specific properties:
  • the conducting material of the conducting portions on each of the boards 203, 309, 310 and 403 was copper.
  • the layer 401 of dielectric material had a thickness of 1.5 mm (one point five millimetres) and was made of ABS polymer material commercially available under the trade name CYCOLAC G368 ABS. This material has a relative permittivity ( ⁇ r ) of 2.8 (two point eight) and a tangent of dielectric loss angle (tan ⁇ ) value of 0.014 (zero point zero one four). Consequently, the layer 401 causes the separation as an apparent electrical length between the antenna board 403 and the conducting support member 301 to be greater than the actual physical gap size by a factor of about 1.22. The actual physical gap between the layer 401 and the conducting support member 301 was 10.2 (ten point two) millimetres .
  • VSWR voltage standing wave ratio
  • FIG. 7 is a graph of VSWR versus frequency measured in MHz (MegaHertz) showing a curve 700 plotted for the specific antenna apparatus made as described in Example 1.
  • a dashed line 701 indicates a threshold VSWR value of three.
  • the curve 700 beneficially shows a VSWR value of three or less, in other words the VSWR is not above the threshold VSWR indicated by the line 701, in two regions, namely a first region 702 and a second region 703.
  • the first region 702 extends from about 800 MHz
  • the second region 705 extends from about 1200 MHz to about 2000 MHz.
  • the two frequency ranges of commercial interest fall suitably in the first region 702 of the curve 700 and the second region 703 of the curve 700 respectively.
  • Specific measured points on the curve 700 in the first region 702 are indicated by three markers Ml, M2 and M3.
  • Markers Ml and M3 indicate the respective ends of the Frequency Range 1.
  • Specific measured points on the curve 700 in the second region 703 are indicated by three markers M4, M5 and M6.
  • Markers M4 and M6 indicate the respective ends of the Frequency Range 2.
  • FIG. 7 also shows a table, Table 1, in which the measured VSWR and frequency for each of the markers Ml to M6 is given. For each of the markers Ml to M6 the VSWR value measured, as listed in Table 1, is a low value which is beneficially less than 2.5.
  • FIG. 8 shows a plot 800 in two dimensions in the y-z plane illustrating the omnidirectional radiation pattern obtained in that plane.
  • the maximum gain with the polarization vector along the x axis was -3.4 (minus three point four) dBi (decibels over isotropic) .
  • FIG. 9 shows a plot 900 in two dimensions in the x-z plane illustrating the omnidirectional radiation pattern obtained in that plane.
  • the maximum gain measured for the polarization vector along the y axis was 0.99 (zero point nine nine) dBi.
  • FIG. 10 shows a plot 1000 in two dimensions in the x-y plane illustrating the omnidirectional radiation pattern obtained in that plane.
  • the maximum gain measured for the polarization vector along the z axis was 0.89 (zero point eight nine) dBi.
  • FIG. 11 shows a plot 1100 in two dimensions in the y-z plane illustrating the omnidirectional radiation pattern obtained in that plane.
  • the maximum gain with the polarization vector along the x axis was 1.9 (one point nine) dBi .
  • FIG. 12 shows a plot 1200 in two dimensions in the x-z plane illustrating the omnidirectional radiation pattern obtained in that plane.
  • the maximum gain with the polarization vector along the y axis was -1.82 (minus one point eight two) dBi.
  • FIG. 13 shows a plot 1300 in two dimensions in the x-y plane illustrating the omnidirectional radiation pattern obtained in that plane.
  • the maximum gain with the polarization vector along the z axis was 0.57 (zero point five seven) dBi.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

La présente invention concerne un appareil d'antenne pour un dispositif de communication sans fil (100) comportant un substrat d'antenne isolant (403) comprenant sur une première surface de celui-ci une première partie conductrice (501) fournissant un premier radiateur et sur une seconde surface de celui-ci une seconde partie conductrice (502), non reliée galvaniquement à la première partie, fournissant un second radiateur. Le substrat d'antenne isolant porte également une première partie d'un plan de masse conducteur comprenant une troisième partie conductrice (509). Reliée galvaniquement à la première partie du plan de masse se trouve une seconde partie de plan de masse comportant un organe de support conducteur (301). Le substrat isolant est séparé de l'organe de support conducteur mais supporté sur celui-ci.
PCT/US2007/071847 2006-07-03 2007-06-22 Appareil d'antenne WO2008005703A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0613075.1 2006-07-03
GB0613075A GB2439760B (en) 2006-07-03 2006-07-03 Antenna Apparatus

Publications (3)

Publication Number Publication Date
WO2008005703A2 true WO2008005703A2 (fr) 2008-01-10
WO2008005703A3 WO2008005703A3 (fr) 2008-10-09
WO2008005703B1 WO2008005703B1 (fr) 2008-11-20

Family

ID=36888438

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/071847 WO2008005703A2 (fr) 2006-07-03 2007-06-22 Appareil d'antenne

Country Status (3)

Country Link
GB (1) GB2439760B (fr)
TW (1) TW200816561A (fr)
WO (1) WO2008005703A2 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6040803A (en) * 1998-02-19 2000-03-21 Ericsson Inc. Dual band diversity antenna having parasitic radiating element
US6992627B1 (en) * 1999-02-27 2006-01-31 Rangestar Wireless, Inc. Single and multiband quarter wave resonator
US6181282B1 (en) * 2000-01-28 2001-01-30 Tyco Electronics Corporation Antenna and method of making same
US6650294B2 (en) * 2001-11-26 2003-11-18 Telefonaktiebolaget Lm Ericsson (Publ) Compact broadband antenna
US6680705B2 (en) * 2002-04-05 2004-01-20 Hewlett-Packard Development Company, L.P. Capacitive feed integrated multi-band antenna
TWI249263B (en) * 2003-09-19 2006-02-11 Hon Hai Prec Ind Co Ltd Planar inverted-F antenna
US20050083233A1 (en) * 2003-10-15 2005-04-21 Ziming He Patch antenna
KR100581714B1 (ko) * 2003-12-26 2006-05-22 인탑스 주식회사 전자기적 커플링 급전방식을 이용한 역 에프형 내장형안테나

Also Published As

Publication number Publication date
GB2439760A (en) 2008-01-09
GB2439760B (en) 2008-10-15
WO2008005703B1 (fr) 2008-11-20
TW200816561A (en) 2008-04-01
WO2008005703A3 (fr) 2008-10-09
GB0613075D0 (en) 2006-08-09

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