EP1038332B1 - Dual band antenna - Google Patents
Dual band antenna Download PDFInfo
- Publication number
- EP1038332B1 EP1038332B1 EP98962782A EP98962782A EP1038332B1 EP 1038332 B1 EP1038332 B1 EP 1038332B1 EP 98962782 A EP98962782 A EP 98962782A EP 98962782 A EP98962782 A EP 98962782A EP 1038332 B1 EP1038332 B1 EP 1038332B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- patch
- feed
- ground plane
- frequency band
- plane layer
- 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.)
- Expired - Lifetime
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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- 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
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- 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
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- 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
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- 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
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- 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
- H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
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- 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
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
- H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line
Definitions
- the present invention relates to a dual band antenna, comprising at least one antenna element including a number of substantially planar, mutually parallel radiating patches being fed with microwave power from a feed network via a coupling means in a ground plane layer of an electrically conductive material.
- the main object of the present invention is to provide such an antenna with an antenna element which is operable in at least two separate frequency bands, each band preferably being rather broad.
- Another object is to provide an antenna with an antenna element operating with dual polarization in order to accomplish a desired diversity of the microwave radiation transmitted from or received by the antenna. Such diversity is especially useful for base station antennas.
- the dual polarized carrier waves should be orthogonal to each other with a good isolation therebetween, preferably better than 30 dB.
- the first patch will have a dual operative function, i.e. it will serve as a radiating element but also as a coupling element so as to couple, by means of its aperture, the microwave power from the feed network and the aperture of the ground plane layer to the second patch.
- the third patch between the ground plane layer and the first patch, the third patch serving to couple the microwave power in the second frequency band.
- the third patch should be substantially of the same size as the second patch but smaller than the first patch.
- the coupling means at the ground plane layer comprises an aperture therein, and each of the apertures is cross-shaped with two crossing slots being perpendicular to one another.
- the first and second patches should then be centered in relation to the central point of the cross-shaped aperture of the ground plane layer.
- Fig. 1 is a perspective, exploded view of an antenna element with a number of substantially planar patches located on top of a ground plane layer having a cross-shaped aperture, a feed network and a bottom or rear shielding cage;
- Fig. 2 is a view from the bottom of the antenna element shown in fig. 1 , the bottom shielding cage being removed for clarity.
- Fig. 3 is a perspective view, corresponding to fig. 1 , of a second embodiment of the antenna element.
- the antenna element shown very schematically in fig. 1 comprises a patch structure with three substantially planar patch layers 1, 2 and 3 located one on top of the other and centered over a ground plane layer 4 serving as a reflector.
- the ground plane layer 4 is made of an electrically conductive material, e.g. aluminum, and is provided with a centrally located cross-shaped aperture with two mutually perpendicular slots 5a, 5b.
- the cross-shaped aperture 5a, 5b is excited by a microstrip feed network 6 which is etched on a substrate layer 7 placed underneath the ground plane layer 4.
- the shielding cage 8 serves to prevent microwave propagation backwards or sideways in parallel to the plane defined by the ground plane layer 4.
- the shielding cage 8 is likewise made of an electrically conductive material, such as aluminum, and is preferably provided with upwardly projecting tongues or, sharp pins 8a, which extend through corresponding holes in the substrate 7 and are connected to the ground plane layer 4, e.g. by soldered connections in corresponding bores in the ground plane layer 4 (not shown).
- the patches 1, 2 and 3 are separated from each other by a foam material (not shown), e.g. of the kind denoted ROHACELL, having a permittivity of approximately 1.05.
- the substrate layer 7 is made of a teflon material, such as DICLAD 527, being 0.762 mm thick and having a permittivity of 2.55.
- the feed network 6 is provided with fork-like feed elements 6a, 6b which are perpendicular to each other and to a corresponding one of the slots 5a, 5b in the ground plane layer 4, the slots 5a, 5b serving as a coupling means for the microwave power. See also fig. 2 .
- the feed network 6 is adapted to feed microwave power in two separate frequency bands, including a first, relatively low frequency band, e.g. the 880-960 MHz GSM band and a second, relatively high frequency band, e.g. the 1710-1880 MHz DCS frequency band.
- a first, relatively low frequency band e.g. the 880-960 MHz GSM band
- a second, relatively high frequency band e.g. the 1710-1880 MHz DCS frequency band.
- the feed elements 6a, 6b feed microwave power via the slots 5a, 5b (one vertically polarized channel and one horizontally polarized channel) to the relatively large radiating patch 2, which radiates microwave power in a well-defined pattern (upwardly in fig. 1 ).
- the feed elements 6a, 6b will also feed microwave power in the second, relatively high frequency band via the slots 5a, 5b in the ground plane layer 4 and via a cross-shaped aperture 9a, 9b in the patch layer 2 to the upper, relatively small radiating patch 1.
- the cross-shaped aperture 9a, 9b consists of perpendicular slots 9a and 9b, which are parallel to a respective one of the slots 5a, 5b, though shorter in length.
- the patch 3, located between the ground plane layer 4 and the patch 2 serves to enhance the coupling effect in the second, relatively high frequency band.
- the patch 3 should be slightly larger than or substantially of the same size as the radiating patch 1 but smaller than the radiating patch 2.
- the feed elements 6a and 6b are positioned in the same plane on the bottom of the substrate layer 7. Therefore, it is necessary to have an air bridge at the crossing point 6c of the two feed elements 6a, 6b.
- Each feed element is divided into two 50 ⁇ branches which end in open circuit stubs. In both frequency bands, a small amount of symmetrical capacitive tuning is provided by way of short sections 6aa, 6bb being somewhat wider about 30 mm before the respective aperture slot 5a, 5b.
- the size and position of the relatively large radiating patch 2 are chosen for good performance in the lower frequency band, the length and width of the patch 2 corresponding essentially to the lengths of the slots 5a and 5b.
- the patches 1, 2, 3 do not have to be square or rectangular but can have some other configuration, e.g. circular or rombic. In case dual polarization is used, they should be symmetrical with reference to a rotation of 90° or a multiple thereof.
- the slots 9a, 9b in the radiating patch 2 should be shorter than the slots 5a, 5b.
- the respective length of these slots 9a, 9b should correspond to the dimensions of the relatively small radiating patch 1.
- the coupling patch 3 should be slightly larger than or substantially of the same size as the radiating patch 1.
- the slots 9a, 9b may be rotated at an angle, e.g. 45°, relative to the longer slots 5a, 5b.
- the relatively large radiating patch 2 functions as a ground plane for the relatively small top patch 1. This has been confirmed in practical experiments. In fact, it was found that the radiation patterns from the patches 1 and 2 were quite similar. Also, the ratio between the size of the patch 2 and the ground plane layer 4 is approximately equal to the ratio between the small patch 1 and the large patch 2.
- the shielding cage or box 8 reduces the radiation backwards to practically zero.
- this can be achieved by means of electrically conducting screws.
- Fig. 3 shows a slightly different embodiment, where the feed network is constituted by coaxial cables 6'a and 6'b, one for each polarization. At the ground layer 4', these cables are connected to probes 5'a and 5'b, respectively. The central conductor of each cable 6'a, 6'b is thus connected to the respective probe 5'a, 5'b, which in turn is connected to the coupling patch 3', whereas the outer, tubular conductor of each coaxial cable is connected to the ground plane layer 4'. If so desired, there may be more than one pair of coaxial cables and probes. Also, in principle, it is possible to combine probe feeding and aperture-coupling, one for each polarization.
- the antenna according to the invention may be modified within the scope of the appended claims.
- the antenna may comprise two or several antenna elements in a row or in several rows in a matrix arrangement.
- each antenna element may comprise more than two radiating patches, each radiating in a specific frequency band.
- the frequency bands are widely separated from each other, typically by an octave between adjacent frequency bands.
- the dual polarization may be linear as shown, or circular.
- the inventive concept may also be applied without dual polarization. In such a case, the apertures in the ground plane layer 4 and in the patch 2 do not have to be cross-shaped but may have any desired configuration.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
Description
- The present invention relates to a dual band antenna, comprising at least one antenna element including a number of substantially planar, mutually parallel radiating patches being fed with microwave power from a feed network via a coupling means in a ground plane layer of an electrically conductive material.
- Similar antennas, some of them with only one radiating patch, are generally known in various forms. See e.g. the
US patent specification 5030961 (Tsao ),5241321 (Tsao ),5355143 (Zürcher et al. ), theEP patent application, publication No. 520908 (Alcatel Espace PCT/SE97/00776 (Allgon - The article "Stacked patches with a slot in the common wall for single- and dual-band operation" F.Y. COLOMB, P.E MAYES, IEEE ANTENAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, JULY 1992, vol. 4, pages 2077-2080, discloses a dual band antenna as set out in the preamble of the
independent claim 1. - Recently, the demand for antennas for mobile wireless applications has increased dramatically, and there are now a number of land and satellite based systems for wireless communications using a wide range of frequency bands. Accordingly, there is also a need for a single antenna element having radiating elements for patches being operable in two or more separate frequency bands.
- The main object of the present invention is to provide such an antenna with an antenna element which is operable in at least two separate frequency bands, each band preferably being rather broad.
- Another object is to provide an antenna with an antenna element operating with dual polarization in order to accomplish a desired diversity of the microwave radiation transmitted from or received by the antenna. Such diversity is especially useful for base station antennas. The dual polarized carrier waves should be orthogonal to each other with a good isolation therebetween, preferably better than 30 dB.
- The main object, as stated above, is achieved by an antenna as set out in
claim 1. - Thus, the first patch will have a dual operative function, i.e. it will serve as a radiating element but also as a coupling element so as to couple, by means of its aperture, the microwave power from the feed network and the aperture of the ground plane layer to the second patch.
- In order to obtain an effective coupling, it is preferable to arrange a third patch between the ground plane layer and the first patch, the third patch serving to couple the microwave power in the second frequency band. The third patch should be substantially of the same size as the second patch but smaller than the first patch.
- Dual polarization can be achieved in each frequency band. Advantageously, the coupling means at the ground plane layer comprises an aperture therein, and each of the apertures is cross-shaped with two crossing slots being perpendicular to one another. The first and second patches should then be centered in relation to the central point of the cross-shaped aperture of the ground plane layer.
- These and other preferred features are stated in the appended claims and will appear from the detailed description below.
- The invention will now be explained further with reference to the appended drawings, which illustrate a preferred embodiment of the invention.
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Fig. 1 is a perspective, exploded view of an antenna element with a number of substantially planar patches located on top of a ground plane layer having a cross-shaped aperture, a feed network and a bottom or rear shielding cage; and -
Fig. 2 is a view from the bottom of the antenna element shown infig. 1 , the bottom shielding cage being removed for clarity. -
Fig. 3 is a perspective view, corresponding tofig. 1 , of a second embodiment of the antenna element. - The antenna element shown very schematically in
fig. 1 comprises a patch structure with three substantiallyplanar patch layers ground plane layer 4 serving as a reflector. - The
ground plane layer 4 is made of an electrically conductive material, e.g. aluminum, and is provided with a centrally located cross-shaped aperture with two mutuallyperpendicular slots cross-shaped aperture microstrip feed network 6 which is etched on asubstrate layer 7 placed underneath theground plane layer 4. - At the bottom, i.e. underneath or on the rear side of the
substrate 7, there is ashielding cage 8 serving to prevent microwave propagation backwards or sideways in parallel to the plane defined by theground plane layer 4. Theshielding cage 8 is likewise made of an electrically conductive material, such as aluminum, and is preferably provided with upwardly projecting tongues or,sharp pins 8a, which extend through corresponding holes in thesubstrate 7 and are connected to theground plane layer 4, e.g. by soldered connections in corresponding bores in the ground plane layer 4 (not shown). - The
patches substrate layer 7 is made of a teflon material, such as DICLAD 527, being 0.762 mm thick and having a permittivity of 2.55. - As is known per se, the
feed network 6 is provided with fork-like feed elements 6a, 6b which are perpendicular to each other and to a corresponding one of theslots ground plane layer 4, theslots fig. 2 . - According to the present invention, the
feed network 6 is adapted to feed microwave power in two separate frequency bands, including a first, relatively low frequency band, e.g. the 880-960 MHz GSM band and a second, relatively high frequency band, e.g. the 1710-1880 MHz DCS frequency band. - In the lower frequency band, the
feed elements 6a, 6b feed microwave power via theslots patch 2, which radiates microwave power in a well-defined pattern (upwardly infig. 1 ). - Moreover, the
feed elements 6a, 6b will also feed microwave power in the second, relatively high frequency band via theslots ground plane layer 4 and via across-shaped aperture 9a, 9b in thepatch layer 2 to the upper, relatively small radiatingpatch 1. - In order to achieve an effective coupling, the
cross-shaped aperture 9a, 9b consists ofperpendicular slots 9a and 9b, which are parallel to a respective one of theslots patch 3, located between theground plane layer 4 and thepatch 2, serves to enhance the coupling effect in the second, relatively high frequency band. Thepatch 3 should be slightly larger than or substantially of the same size as the radiatingpatch 1 but smaller than the radiatingpatch 2. - In the illustrated embodiment, the
feed elements 6a and 6b are positioned in the same plane on the bottom of thesubstrate layer 7. Therefore, it is necessary to have an air bridge at thecrossing point 6c of the twofeed elements 6a, 6b. Each feed element is divided into two 50Ω branches which end in open circuit stubs. In both frequency bands, a small amount of symmetrical capacitive tuning is provided by way of short sections 6aa, 6bb being somewhat wider about 30 mm before therespective aperture slot - The size and position of the relatively large radiating
patch 2 are chosen for good performance in the lower frequency band, the length and width of thepatch 2 corresponding essentially to the lengths of theslots patches - The
slots 9a, 9b in the radiatingpatch 2 should be shorter than theslots slots 9a, 9b should correspond to the dimensions of the relatively small radiatingpatch 1. As mentioned above, thecoupling patch 3 should be slightly larger than or substantially of the same size as the radiatingpatch 1. - Moreover, the
slots 9a, 9b may be rotated at an angle, e.g. 45°, relative to thelonger slots - It is to be noted that the relatively large radiating
patch 2 functions as a ground plane for the relatively smalltop patch 1. This has been confirmed in practical experiments. In fact, it was found that the radiation patterns from thepatches patch 2 and theground plane layer 4 is approximately equal to the ratio between thesmall patch 1 and thelarge patch 2. - It has also been found that it is possible to adjust the width of the radiated microwave beam by varying the width of the
respective patch - Experiments have also confirmed that the shielding cage or
box 8 reduces the radiation backwards to practically zero. Here, it is important that the cage orbox 8 is directly connected to theground plane layer 4. As an alternative, this can be achieved by means of electrically conducting screws. - Practical experiments have also shown that it is possible to achieve a return loss of at least 15 dB in the lower band (GSM) for both channels. In the upper band (DCS) the return loss is greater than 10 dB. Moreover, the band widths for return loss greater than 10 dB were 14.3 % around 920 MHz and 14.7 % around 1795 MHz. Finally, the isolation between the two channels in each frequency band proved to be greater than 32 dB.
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Fig. 3 shows a slightly different embodiment, where the feed network is constituted by coaxial cables 6'a and 6'b, one for each polarization. At theground layer 4', these cables are connected to probes 5'a and 5'b, respectively. The central conductor of each cable 6'a, 6'b is thus connected to the respective probe 5'a, 5'b, which in turn is connected to the coupling patch 3', whereas the outer, tubular conductor of each coaxial cable is connected to theground plane layer 4'. If so desired, there may be more than one pair of coaxial cables and probes. Also, in principle, it is possible to combine probe feeding and aperture-coupling, one for each polarization. - The antenna according to the invention may be modified within the scope of the appended claims. The antenna may comprise two or several antenna elements in a row or in several rows in a matrix arrangement. Moreover, each antenna element may comprise more than two radiating patches, each radiating in a specific frequency band. Preferably, the frequency bands are widely separated from each other, typically by an octave between adjacent frequency bands. Moreover, as indicated above, the dual polarization may be linear as shown, or circular. Of course, the inventive concept may also be applied without dual polarization. In such a case, the apertures in the
ground plane layer 4 and in thepatch 2 do not have to be cross-shaped but may have any desired configuration.
Claims (10)
- A dual band antenna, comprising at least one antenna element including a number of substantially planar, mutually parallel radiating patches (1-3) mounted one on top of the other and being fed with microwave power from a feed network (6) via a feed coupling means (5a, 5b; 5'a, 5'b) at a ground plane layer (4) of an electrically conductive material,
wherein said feed network is adapted to feed microwave power in at least two separate frequency bands, including a first, lower frequency band, being radiated from a first one (2) of said patches and a second, higher frequency band, being radiated from a second one (1) of said patches, said first patch (2), operating in a lower frequency band, being larger than said second patch (1), operating in a higher frequency band, said first larger patch (2) having a coupling aperture (9a,9b), formed therein, whereby said first patch (2) has a dual operative function, serving as a broad band radiating element for said lower frequency band as well as a coupling element for broad band coupling of microwave power in said higher frequency band to said second, smaller patch (1),
characterized in that- said at least two frequency bands are widely separated from each other, and- the length of said coupling aperture corresponds to the dimensions of said second smaller patch (1). - A dual band antenna as defined in claim 1,
wherein a third patch (3; 3'), serving as a further coupling means for said higher frequency band, is located between said ground plane layer (4) and said first patch (2). - A dual band antenna as defined in claim 2,
wherein said third patch (3; 3') is substantially of the same size as said second patch (1) but smaller than said first patch (2). - A dual band antenna as defined in any one of claims 1-3,
wherein said feed network (6a, 6b) is adapted to feed said microwave power with dual polarization in each of said frequency bands, said feed coupling means at said ground plane layer (4') comprising at least one pair of probes (5'a, 5'b), one probe for each polarization in each pair. - A dual band antenna as defined in any one of claims 1-3,- wherein said feed network (6) is adapted to feed said microwave power with dual polarization in each of said frequency bands,- wherein said feed coupling means at said ground plane layer (4) comprises a feed coupling aperture (5a, 5b) therein, and- wherein each of said feed coupling aperture and said coupling aperture is cross-shaped with two crossing slots (5a, 5b; 9a, 9b) being perpendicular to one another, and- said first and second patches (2, 1) being centered in relation to the central point of the cross-shaped feed coupling aperture (5a, 5b) of said ground plane layer (4).
- A dual band antenna as defined in claim 5, wherein the lengths of the slots (5a, 5b) in the cross-shaped feed coupling aperture in the ground plane layer (4) are greater than those (9a, 9b) of the cross-shaped coupling aperture in the first patch (2).
- A dual band antenna as defined in claim 5 or 6, wherein said feed network is constituted by a planar microstrip network (6) having two separate feed elements (6a, 6b) adapted to feed an associated one of the two slots (5a, 5b) of the cross-shaped feed coupling aperture in said ground plane layer (4).
- A dual band antenna as defined in any one of claims 5-7, wherein a box-like shielding metal structure (8) is located on the side of said ground plane layer (4) facing away from said first and second patches (2,1), said box-like shielding metal structure (8) being centered in relation to the cross-shaped feed coupling aperture (5a, 5b) in said ground plane layer (4).
- A dual band antenna as defined in any one of claims 1-8, wherein a center frequency of the second frequency band is approximately an octave higher than a center frequency of said first frequency band.
- A dual band antenna as defined in claim 9, wherein said center frequency of said first frequency band is in the region 800-900 MHz, whereas said center frequency of said second frequency band is in the region 1800-1900 MHz.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9704642A SE511064C2 (en) | 1997-12-12 | 1997-12-12 | dual band antenna |
SE9704642 | 1997-12-12 | ||
PCT/SE1998/002235 WO1999031757A1 (en) | 1997-12-12 | 1998-12-07 | Dual band antenna |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1038332A1 EP1038332A1 (en) | 2000-09-27 |
EP1038332B1 true EP1038332B1 (en) | 2008-04-09 |
Family
ID=20409368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98962782A Expired - Lifetime EP1038332B1 (en) | 1997-12-12 | 1998-12-07 | Dual band antenna |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP1038332B1 (en) |
CN (1) | CN1147966C (en) |
AU (1) | AU1794099A (en) |
BR (1) | BR9813505B1 (en) |
DE (1) | DE69839348T2 (en) |
ES (1) | ES2301218T3 (en) |
HK (1) | HK1033210A1 (en) |
SE (1) | SE511064C2 (en) |
TW (1) | TW413967B (en) |
WO (1) | WO1999031757A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE515092C2 (en) | 1999-03-15 | 2001-06-11 | Allgon Ab | Double band antenna device |
US6339404B1 (en) | 1999-08-13 | 2002-01-15 | Rangestar Wirless, Inc. | Diversity antenna system for lan communication system |
ES2241378T3 (en) | 1999-09-20 | 2005-10-16 | Fractus, S.A. | MULTI LEVEL ANTENNAS. |
ES2156832B1 (en) * | 1999-10-07 | 2002-03-01 | Univ Valencia Politecnica | DUAL BAND PRINTED ANTENNA |
DE69910847D1 (en) | 1999-10-26 | 2003-10-02 | Fractus Sa | NESTED MULTI-BAND GROUP ANTENNAS |
SE518237C2 (en) * | 2000-11-27 | 2002-09-10 | Allgon Ab | Microwave antenna with patch mounting device |
FR2828015A1 (en) * | 2001-07-27 | 2003-01-31 | D Phy Espace Dev De Produits H | Antenna feed circuit used in connection with a flat antenna incorporates a dielectric plate with a micro-tape and an earth surface with a radiant slot |
BG64431B1 (en) * | 2001-12-19 | 2005-01-31 | Skygate International Technology N.V. | Antenna element |
US7705793B2 (en) | 2004-06-10 | 2010-04-27 | Raysat Antenna Systems | Applications for low profile two way satellite antenna system |
US7911400B2 (en) | 2004-01-07 | 2011-03-22 | Raysat Antenna Systems, L.L.C. | Applications for low profile two-way satellite antenna system |
US8761663B2 (en) | 2004-01-07 | 2014-06-24 | Gilat Satellite Networks, Ltd | Antenna system |
US7626549B2 (en) | 2007-03-28 | 2009-12-01 | Eswarappa Channabasappa | Compact planar antenna for single and multiple polarization configurations |
US8354972B2 (en) | 2007-06-06 | 2013-01-15 | Fractus, S.A. | Dual-polarized radiating element, dual-band dual-polarized antenna assembly and dual-polarized antenna array |
US8120536B2 (en) | 2008-04-11 | 2012-02-21 | Powerwave Technologies Sweden Ab | Antenna isolation |
KR100988909B1 (en) * | 2008-09-23 | 2010-10-20 | 한국전자통신연구원 | Microstrip patch antenna with high gain and wide band characteristics |
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KR101111668B1 (en) * | 2010-08-27 | 2012-03-13 | 한국전자통신연구원 | Microstrip patch antenna with high gain and wide band characteristics |
CN102570019B (en) * | 2012-01-17 | 2014-12-17 | 上海大亚科技有限公司 | Surface-mounted radio-frequency antenna unit supporting double frequency and corresponding radio-frequency antenna system |
CN102842755B (en) * | 2012-07-11 | 2015-07-22 | 桂林电子科技大学 | Dual-polarized antenna applicable to wireless local area network and manufacturing method of dual-polarized antenna |
CN105406190B (en) * | 2014-08-06 | 2018-03-30 | 启碁科技股份有限公司 | Flat board dual polarized antenna and combined antenna |
WO2016131496A1 (en) * | 2015-02-20 | 2016-08-25 | Huawei Technologies Co., Ltd. | Multiport antenna element |
US10931014B2 (en) | 2018-08-29 | 2021-02-23 | Samsung Electronics Co., Ltd. | High gain and large bandwidth antenna incorporating a built-in differential feeding scheme |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4903033A (en) * | 1988-04-01 | 1990-02-20 | Ford Aerospace Corporation | Planar dual polarization antenna |
US5124713A (en) * | 1990-09-18 | 1992-06-23 | Mayes Paul E | Planar microwave antenna for producing circular polarization from a patch radiator |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5030961A (en) * | 1990-04-10 | 1991-07-09 | Ford Aerospace Corporation | Microstrip antenna with bent feed board |
CA2061254C (en) * | 1991-03-06 | 2001-07-03 | Jean Francois Zurcher | Planar antennas |
JPH06500909A (en) * | 1991-06-28 | 1994-01-27 | アルカテル・エスパース | linear array antenna |
US5241321A (en) * | 1992-05-15 | 1993-08-31 | Space Systems/Loral, Inc. | Dual frequency circularly polarized microwave antenna |
GB9220414D0 (en) * | 1992-09-28 | 1992-11-11 | Pilkington Plc | Patch antenna assembly |
-
1997
- 1997-12-12 SE SE9704642A patent/SE511064C2/en not_active IP Right Cessation
-
1998
- 1998-03-10 TW TW87103453A patent/TW413967B/en not_active IP Right Cessation
- 1998-12-07 WO PCT/SE1998/002235 patent/WO1999031757A1/en active Application Filing
- 1998-12-07 DE DE69839348T patent/DE69839348T2/en not_active Expired - Lifetime
- 1998-12-07 ES ES98962782T patent/ES2301218T3/en not_active Expired - Lifetime
- 1998-12-07 EP EP98962782A patent/EP1038332B1/en not_active Expired - Lifetime
- 1998-12-07 CN CNB98812131XA patent/CN1147966C/en not_active Expired - Fee Related
- 1998-12-07 AU AU17940/99A patent/AU1794099A/en not_active Abandoned
- 1998-12-07 BR BRPI9813505-8A patent/BR9813505B1/en not_active IP Right Cessation
-
2001
- 2001-06-01 HK HK01103784A patent/HK1033210A1/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4903033A (en) * | 1988-04-01 | 1990-02-20 | Ford Aerospace Corporation | Planar dual polarization antenna |
US5124713A (en) * | 1990-09-18 | 1992-06-23 | Mayes Paul E | Planar microwave antenna for producing circular polarization from a patch radiator |
Non-Patent Citations (2)
Title |
---|
COLOMB F.Y.; MAYES P.E.: "Stacked patches with a slot in the common wall for single- and dual-band operation", IEEE ANTENAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, vol. 4, July 1992 (1992-07-01), NEW YORK, pages 2077 - 2080, XP010066000 * |
DAVID M. POZAR, SEAN M. DUFFY: "A dual-band circularly polarized aperture-coupled stacked microstrip antenna for global positioning satellite", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. 45, no. 11, 1 November 1997 (1997-11-01), NEW YORK, pages 1618 - 1624, XP000723132 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11296416B2 (en) * | 2017-04-25 | 2022-04-05 | Samsung Electronics Co., Ltd | Metamaterial structure antenna and metamaterial structure array |
Also Published As
Publication number | Publication date |
---|---|
SE511064C2 (en) | 1999-07-26 |
CN1147966C (en) | 2004-04-28 |
WO1999031757A1 (en) | 1999-06-24 |
ES2301218T3 (en) | 2008-06-16 |
DE69839348D1 (en) | 2008-05-21 |
TW413967B (en) | 2000-12-01 |
AU1794099A (en) | 1999-07-05 |
CN1281590A (en) | 2001-01-24 |
EP1038332A1 (en) | 2000-09-27 |
SE9704642D0 (en) | 1997-12-12 |
BR9813505A (en) | 2000-10-10 |
DE69839348T2 (en) | 2008-07-17 |
SE9704642L (en) | 1999-06-13 |
HK1033210A1 (en) | 2001-08-17 |
BR9813505B1 (en) | 2012-05-02 |
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