CN104659485A - Anti-metal device and Wifi antenna - Google Patents

Anti-metal device and Wifi antenna Download PDF

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Publication number
CN104659485A
CN104659485A CN201410043435.4A CN201410043435A CN104659485A CN 104659485 A CN104659485 A CN 104659485A CN 201410043435 A CN201410043435 A CN 201410043435A CN 104659485 A CN104659485 A CN 104659485A
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described
slot line
unit
flanging
electro
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CN201410043435.4A
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CN104659485B (en
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曾文波
赵嘉
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广西科技大学
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Abstract

The invention discloses an anti-metal device and a Wifi antenna comprising the anti-metal device, and relates to the wireless field. The anti-metal device comprises a plurality of electromagnetic band-gap units arrayed on a two-dimensional surface and spliced seamlessly, wherein each electromagnetic band-gap unit adopts a plate with square upper and lower bottom surfaces and is further divided into an upper dielectric layer and a lower metal layer, seamless splicing is achieved through a manner that the side surfaces are spliced with side surfaces of other electromagnetic band-gap units, three gap regions are distributed on the metal layer according to set shapes and positions, the anti-metal device can effectively reduce influences from metal surfaces on the performance of the antenna, and the grain of the antenna in a maximal receiving direction is increased; the anti-metal device is internally built into the Wifi antenna, signals can be received effectively, the size is small, the processing and the mounting are simple, and the Wifi antenna is suitable for batch production in automotive matching enterprises.

Description

A kind of anti-metal device and WIFI antenna

Technical field

The present invention relates to radio art, particularly WIFI field of antenna.

Background technology

WLAN (wireless local area network) (Wireless Local Area Networks, WLAN) be that one utilizes radio frequency (Radio Frequency RF) technology to carry out reportedly defeated system, this technology can make various network equipment access network based on ethernet (INTERNET) rapidly wirelessly.At present, the consensus standard of WLAN mainly comprises 802.11b and the 802.11g standard working in 2.4 GHz and the 802.11a standard working in 5.8 GHz.

WIFI (Wireless Fidelity, Wireless Fidelity) technology is the Wi-Fi communication technology based on IEEE 802.11 series standard, object be improve based on IEEE 802.11 standard Wi-Fi product between interoperability, the same with WLAN, the groundwork frequency range of WIFI has 2.4 GHz (802.11a) and 5.8 GHz(802.11b, g, n).WIFI is mainly used in mobile terminal (laptop computer, PDA, mobile phone, panel computer etc.) to be wirelessly connected to each other.At present, WiFi technology has been deep in the middle of daily life, based on WiFi technology wireless transmission, get online without being tethered to a cable ubiquitous.

But under automotive environment, existing technology can not adapt to the needs of WiFi technology.The mobile device with WIFI function receives WIFI signal, less effective in the car of movement.Configure the effective reception of automobile realization to signals such as WIFI that WIFI antenna can make movement onboard, WIFI signal is forwarded in car, makes the WIFI terminal in car more effectively receive WIFI signal.

Existing car antenna (as telescopic antenna, vehicle window printed antenna, roof " fish ridge " antenna etc.), can only the lower frequency modulation/amplitude modulation broadcast singal of receive frequency, can not the higher microwave signal (such as WIFI signal) of receive frequency.And existing WIFI antenna directly configures onboard, impact by metal car shell is very large, be difficult to effectively receive WIFI signal, reason is at microwave frequency band, and automobile metal car shell is for microwave antenna, it is infinitely-great good conductor, the characteristic (particularly impedance and radiation characteristic, directivity) of antenna is very large by metal environmental impact, from metal surface more close to, affect larger, receive bad to WIFI signal when being placed in car shell surface, directly can not be used as car antenna particularly top antenna.

Summary of the invention

The object of the present invention is to provide and effectively to receive the anti-metal device of WIFI signal in metal surface at a kind of antenna that can make and effectively receive the WIFI antenna of WIFI signal in metal surface.

For achieving the above object, technical scheme of the present invention is:

Described anti-metal device is included in periodic arrangement on two dimensional surface, seamless spliced multiple electro-magnetic bandgap unit, the square plate of described electro-magnetic bandgap unit to be the length of side be Lx, thickness is h, be divided into two-layer up and down, lower floor is dielectric layer, upper strata is metal level, to be docked and realizes seamless spliced, described metal level is distributed with three slit region by side with the side of other electro-magnetic bandgap unit:

First slit region comprise four successively head and the tail right angle connect wide straight slot line, live width is Ws, and line length is 0.17Lx, and described straight slot line is parallel and equal with four back gauges with limit, described electro-magnetic bandgap unit bottom surface four respectively;

Second slit region comprises four the first flanging U-shaped slot line unit connected from beginning to end successively, described first flanging U-shaped slot line unit comprises a base slot line, two isometric side slot line and two isometric flanging slot line, two described side slot line are positioned at the same side of described base slot line, respectively be connected with the two ends of described base slot line are at a right angle respectively by one end, form a U-shaped structure, be connected by one end of other end flanging slot line described with two respectively is at a right angle, two described flanging slot line are positioned at the outside of described U-shaped structure, described base slot line, side slot line and flanging slot line are wide, and width is Ws, and described side gap line length is 0.09Lx, and gap, described base line length is 0.17Lx, and described flanging gap line length is 0.165Lx, the U-shaped bossing of each described first flanging U-shaped slot line unit is towards described electro-magnetic bandgap unit metal layer center, and described base slot line is parallel and equal with four back gauges with limit, described electro-magnetic bandgap unit bottom surface four respectively,

3rd slit region comprises four the second flanging U-shaped slot line unit and eight right angle L shape slot line unit, described second flanging U-shaped slot line unit and described first flanging U-shaped slot line unit are of similar shape and size, described L shape slot line unit comprises a long limit slot line and a minor face slot line, long side seam gap line length is 0.25Lx, width is 0.5Ws, minor face gap line length is 0.15Lx, width is Ws, the long side seam gap line endpoints of every two described right angle L shape slot line unit is connected, tie point lays respectively at four summits of described electro-magnetic bandgap unit metal layer, described long limit slot line outer side edges is along overlapping with described electro-magnetic bandgap unit metal layer four limit respectively, described minor face slot line is positioned at described electro-magnetic bandgap metal layer itself, two end points of four described second flanging U-shaped slot line unit are connected with the minor face end points of two L shape slot line respectively, the U-shaped bossing of each described flanging U-shaped slot line unit is towards described electro-magnetic bandgap unit bottom center,

Described WIFI antenna package contains described anti-metal device, and described anti-metal device and signal receiving device combine, and is bonded into one, also otherwise can be fixedly connected with, forms an entire physical with polythene material or other high-frequency low-consumption Filled Dielectrics.

Further, the parameter of described electro-magnetic bandgap unit is Lx is 14 ~ 18 millimeters, and Ws is 0.4 ~ 1.8 millimeter, the better effects if of anti-metal.

The present invention can bring following technique effect: described anti-metal device, the magnetic conductor surface of its electromagnetic action ideal-like, when the described anti-metal device comprising described anti-metal device is placed between antenna and metal surface, effectively can reduce the impact of metal surface on antenna performance, improve the gain of antenna at maximum receive direction, thus make antenna obtain good electrical resistance on roof or other metal surface; Electro-magnetic bandgap unit is more, anti-metal device is larger, the metallic area covered is also larger, the effect of its anti-metal is more obvious, certain taking up space also larger, by choosing suitable electromagnetic unit quantity and arrangement mode, the electromagnetic structure size be applicable to can be obtained, the effect effectively receiving WIFI signal can be reached, can take up space less again as far as possible; The present invention goes back electro-magnetic bandgap mechanism built in antenna, and signal receiver combines, and forms an entire physical, convenient installation, use, and volume is little, is applicable to automobile accessories enterprise and produces in batches.

Accompanying drawing explanation

Fig. 1 is the vertical view of anti-metal device;

Fig. 2 is the front view of anti-metal device;

Fig. 3 is electro-magnetic bandgap cell schematics;

Fig. 4 is the A-A cutaway view of electro-magnetic bandgap unit;

Fig. 5 is WIFI entire physical structural representation;

Fig. 6 is signal receiver structural representation;

Fig. 7 is the emulation impedance operator figure of embodiment 2;

Fig. 8 is the emulation directional diagram of embodiment 2 in 2.4G frequency range;

Fig. 9 is the emulation directional diagram of embodiment 2 in 5.8G frequency range;

Figure 10 is the emulation directional diagram of embodiment 3 in 2.4G frequency range;

Figure 11 is the emulation directional diagram of embodiment 3 in 5.8G frequency range;

Figure 12 is the emulation directional diagram of embodiment 4 in 2.4G two frequency ranges;

Figure 13 is the emulation directional diagram of embodiment 4 in 5.8G two frequency ranges.

Embodiment

Below in conjunction with attached Example to the detailed description of the invention.

Specific embodiment 1

The present embodiment is the specific embodiment of anti-metal device.

By reference to the accompanying drawings shown in 1,2, this anti-metal device embodiment comprises 64 on two dimensional surface by 8 × 8 matrix periodic arrangement, seamless spliced multiple electro-magnetic bandgap unit 8, described electro-magnetic bandgap unit to be the length of side the be square plate of 16 millimeters, employing thickness is that the RF4 single-clad board of 0.5 millimeter is made, and point lower floor is relative dielectric constant ε r =4.4, the dielectric layer 10 of loss angle tangent tans=0.02, upper strata is metal level 9, by side to dock with the side of other electro-magnetic bandgap unit realize seamless spliced, described metal level is distributed with three slit region: the first slit region 11 comprise four successively head and the tail right angle connect wide straight slot line, live width is 0.4 millimeter, line length is 2.72 millimeters, and described straight slot line is parallel and equal with four back gauges with limit, described electro-magnetic bandgap unit bottom surface four respectively, second slit region 12 comprises four the first flanging U-shaped slot line unit connected from beginning to end successively, described first flanging U-shaped slot line unit comprises a base slot line, two isometric side slot line and two isometric flanging slot line, two described side slot line are positioned at the same side of described base slot line, respectively be connected with the two ends of described base slot line are at a right angle respectively by one end, form a U-shaped structure, be connected by one end of other end flanging slot line described with two respectively is at a right angle, two described flanging slot line are positioned at the outside of described U-shaped structure, described base slot line, side slot line and flanging slot line are wide, and width is 0.4 millimeter, and described side gap line length is 1.44 millimeters, and gap, described base line length is 2.72 millimeters, and described flanging gap line length is 2.64 millimeters, the U-shaped bossing of each first flanging U-shaped slot line unit is towards described electro-magnetic bandgap unit metal layer center, and described base slot line is parallel and equal with four back gauges with limit, described electro-magnetic bandgap unit bottom surface four respectively, 3rd slit region 13 comprises four the second flanging U-shaped slot line unit and eight right angle L shape slot line unit, described second flanging U-shaped slot line unit and the first flanging U-shaped slot line unit are of similar shape and size, described right angle L shape slot line unit comprises a long limit slot line and a minor face slot line, long side seam gap line length is 4 millimeters, width is 0.2 millimeter, minor face gap line length is 2.4 millimeters, width is 0.4 millimeter, the long side seam gap line endpoints of every two described right angle L shape slot line is connected, tie point lays respectively at four summits of described electro-magnetic bandgap unit metal layer, described long limit slot line outer side edges is along overlapping with described electro-magnetic bandgap unit metal layer four limit respectively, described minor face slot line is positioned at described electro-magnetic bandgap metal layer itself, two end points of four described second flanging U-shaped slot line unit are connected with the minor face end points of two L shape slot line respectively, the U-shaped bossing of each described second flanging U-shaped slot line unit is towards described electro-magnetic bandgap unit bottom center.

Specific embodiment 2

The present embodiment is WIFI antenna embodiment.

By reference to the accompanying drawings shown in 3,4, this WIFI antenna comprises the anti-metal device that a signal receiver and implement described in 1, described signal receiver adopt length and width be 128 millimeters, thick be 0.5 millimeter, relative dielectric constant ε r =4.4, the RF4 single-clad board of loss angle tangent tans=0.02, the metal level of described single-clad board makes the circular-shaped monopole minor structure of coplanar waveguide structure feed, comprise a circular radiator, a coplanar waveguide structure and two metal ground, described circular radiator radius is 18 millimeters, described coplanar waveguide structure length is 46 millimeters, wide is 5 millimeters, described metal ground is long, widely be 42 millimeters, it is 0.8 millimeter with the spacing of described coplanar waveguide structure, coaxial feeder is at distributing point 2 feed, wherein coaxial inner conductor connects distributing point, outer conductor connects connection metal ground, signal receiver and anti-metal device press the parallel placement of mode corresponding to shape, the dielectric layer of signal receiver is adjacent with the metal level of anti-metal device and have space, distance is 6.6 millimeters, fill with polythene material and be bonded into one.

Shown in composition graphs 5,6 and 7, the present embodiment has good impedance operator.Conventional unipolar plane WIFI antenna (TA) has good impedance operator at free space, in 1.7 – 6.4 GHz frequency ranges, antenna return loss is less than-10 dB, and this frequency range covers 2.4-2.485 ghz band and the 5.15-5.825 GH frequency range of WIFI.But when this antenna is placed in metal surface, antenna impedance characteristic worsens, and in above-mentioned WIFI frequency range, antenna return loss is greater than-10 dB, show that the antenna TA of conventional design directly can not be placed in metal surface (roof) and use.And the present embodiment is in the above-mentioned WIFI frequency range mentioned, return loss is less than-10 dB.

When the present embodiment is placed in metal surface, in WIFI two frequency ranges, at horizontal plane, there is approximate isotropic directivity, i.e. curve B, be approximately one-way radiation on the vertical plane, be i.e. curve A, as shown in Figure 6,7.

Following table is depicted as the present embodiment when being placed in metal surface, and the gain simulation result on different frequency point, can find out, the present embodiment has good gain effect.

specific embodiment 3

The present embodiment is WIFI antenna embodiment.

The difference of the present embodiment and embodiment 1 is W schoosing value is different, W in the present embodiment s=0.4 millimeter, alternative gets d=6 millimeter, and all the other are identical.

When the present embodiment is placed in metal surface, in WIFI two frequency ranges, at horizontal plane, also there is approximate isotropic directivity, i.e. curve B, be also approximately one-way radiation on the vertical plane, be i.e. curve A, as shown in Figure 8,9.

specific embodiment 4

The difference of the present embodiment and embodiment 2 is W schoosing value is different, W in the present embodiment s=1.8 millimeters, alternative gets d=12 millimeter, and all the other are identical.

When the present embodiment is placed in metal surface, in WIFI two frequency ranges, at horizontal plane, also there is approximate isotropic directivity, i.e. curve B, be also approximately one-way radiation on the vertical plane, be i.e. curve A, as shown in Figure 10,11.

In sum, when the WIFI flat plane antenna TA of conventional design is placed in metal surface, the impedance operator of antenna obviously worsens and causes using, but when the present embodiment is placed in metal surface, antenna can have good impedance operator and comparatively satisfied antenna pattern in the 2.4-2.485 ghz band of WIFI and 5.15-5.825 GH frequency range.

Claims (8)

1. an anti-metal device, it is characterized in that: be included in periodic arrangement on two dimensional surface, seamless spliced multiple electro-magnetic bandgap unit, described electro-magnetic bandgap unit is upper bottom surface is foursquare plate, the bottom surface length of side is Lx, and plate thickness is h, is divided into two-layer up and down, lower floor is dielectric layer, upper strata is metal level, to be docked and realizes seamless spliced, described metal level is distributed with three slit region by side with the side of other electro-magnetic bandgap unit:
First slit region comprise four successively head and the tail right angle connect wide straight slot line, live width is Ws, and line length is 0.17Lx, and described straight slot line is parallel and equal with four back gauges with limit, described electro-magnetic bandgap unit bottom surface four respectively;
Second slit region comprises four the first flanging U-shaped slot line unit connected from beginning to end successively, described first flanging U-shaped slot line unit comprises a base slot line, two isometric side slot line and two isometric flanging slot line, two described side slot line are positioned at the same side of described base slot line, respectively be connected with the two ends of described base slot line are at a right angle respectively by one end, form a U-shaped structure, be connected by one end of other end flanging slot line described with two respectively is at a right angle, two described flanging slot line are positioned at the outside of described U-shaped structure, described base slot line, side slot line and flanging slot line are wide, and width is Ws, and described side gap line length is 0.09Lx, and gap, described base line length is 0.17Lx, and described flanging gap line length is 0.165Lx, the U-shaped bossing of each described first flanging U-shaped slot line unit is towards described electro-magnetic bandgap unit metal layer center, and described base slot line is parallel and equal with four back gauges with limit, described electro-magnetic bandgap unit bottom surface four respectively,
3rd slit region comprises four the second flanging U-shaped slot line unit and eight right angle L shape slot line unit, described second flanging U-shaped slot line unit and described first flanging U-shaped slot line unit are of similar shape and size, described L shape slot line comprises a long limit slot line and a minor face slot line, long side seam gap line length is 0.25Lx, width is 0.5Ws, minor face gap line length is 0.15Lx, width is Ws, the long side seam gap line endpoints of every two described right angle L shape slot line unit is connected, tie point lays respectively at four summits of described electro-magnetic bandgap unit metal layer, described long limit slot line outer side edges is along overlapping with described electro-magnetic bandgap unit metal layer four limit respectively, described minor face slot line is positioned at described electro-magnetic bandgap metal layer itself, two end points of four described second flanging U-shaped slot line unit are connected with the minor face end points of two L shape slot line respectively, the U-shaped bossing of each described second flanging U-shaped slot line unit is towards described electro-magnetic bandgap unit bottom center.
2. according to claim 1, it is characterized in that: the parameter of described electro-magnetic bandgap unit is Lx is 14 ~ 18 millimeters, and Ws is 0.4 ~ 1.8 millimeter.
3. a WIFI antenna, comprise a signal receiver, characterized by further comprising an anti-metal device, described anti-metal device is included in periodic arrangement on two dimensional surface, seamless spliced multiple electro-magnetic bandgap unit, the square plate of described electro-magnetic bandgap unit to be the length of side be Lx, thickness is h, be divided into two-layer up and down, lower floor is dielectric layer, and upper strata is metal level, being docked with the side of other electro-magnetic bandgap unit by side realizes seamless spliced, described metal level is distributed with three slit region:
First slit region comprise four successively head and the tail right angle connect wide straight slot line, live width is Ws, and line length is 0.17Lx, and described straight slot line is parallel and equal with four back gauges with limit, described electro-magnetic bandgap unit bottom surface four respectively;
Second slit region comprises four the first flanging U-shaped slot line unit connected from beginning to end successively, described first flanging U-shaped slot line unit comprises a base slot line, two isometric side slot line and two isometric flanging slot line, two described side slot line are positioned at the same side of described base slot line, respectively be connected with the two ends of described base slot line are at a right angle respectively by one end, form a U-shaped structure, be connected by one end of other end flanging slot line described with two respectively is at a right angle, two described flanging slot line are positioned at the outside of described U-shaped structure, described base slot line, side slot line and flanging slot line are wide, and width is Ws, and described side gap line length is 0.09Lx, and gap, described base line length is 0.17Lx, and described flanging gap line length is 0.165Lx, the U-shaped bossing of each described first flanging U-shaped slot line unit is towards described electro-magnetic bandgap unit metal layer center, and described base slot line is parallel and equal with four back gauges with limit, described electro-magnetic bandgap unit bottom surface four respectively,
3rd slit region comprises four the second flanging U-shaped slot line unit and eight right angle L shape slot line unit, described second flanging U-shaped slot line unit and described first flanging U-shaped slot line unit are of similar shape and size, described L shape slot line comprises a long limit slot line and a minor face slot line, long side seam gap line length is 0.25Lx, width is 0.5Ws, minor face gap line length is 0.15Lx, width is Ws, the long side seam gap line endpoints of every two described right angle L shape slot line unit is connected, tie point lays respectively at four summits of described electro-magnetic bandgap unit metal layer, described long limit slot line outer side edges is along overlapping with described electro-magnetic bandgap unit metal layer four limit respectively, described minor face slot line is positioned at described electro-magnetic bandgap metal layer itself, two end points of four described second flanging U-shaped slot line unit are connected with the minor face end points of two L shape slot line respectively, the U-shaped bossing of each described second flanging U-shaped slot line unit is towards described electro-magnetic bandgap unit bottom center.
4. WIFI antenna according to claim 3, is characterized in that: the parameter of described electro-magnetic bandgap unit is Lx is 14 ~ 18 millimeters, and Ws is 0.4 ~ 1.8 millimeter.
5. WIFI antenna according to claim 4, is characterized in that:
Described signal receiver adopt length and width be 128 millimeters, thick be 0.5 millimeter, relative dielectric constant ε r =4.4, the single-clad board of loss angle tangent tans=0.02; Described anti-metal device comprises 64 electro-magnetic bandgap unit by 8 × 8 matrix arrangements, described electro-magnetic bandgap unit length of side Lx=16 millimeter, W s=0.6 millimeter, thickness is 0.5 millimeter, relative dielectric constant ε r =4.4, loss angle tangent tans=0.02; The dielectric layer of signal receiver is adjacent with the metal level of anti-metal device, and distance is 6.6 millimeters.
6. WIFI antenna according to claim 3, is characterized in that:
Described signal receiver adopt length and width be 128 millimeters, thick be 0.5 millimeter, relative dielectric constant ε r =4.4, the single-clad board of loss angle tangent tans=0.02; Described anti-metal device comprises 64 electro-magnetic bandgap unit by 8 × 8 matrix arrangements, described electro-magnetic bandgap unit length of side Lx=16 millimeter, W s=0.4 millimeter, thickness is 0.5 millimeter, relative dielectric constant ε r =4.4, loss angle tangent tans=0.02; The dielectric layer of signal receiver is adjacent with the metal level of anti-metal device, and distance is 6 millimeters.
7. anti-metal WIFI antenna according to claim 4, is characterized in that:
Described signal receiver adopt length and width be 128 millimeters, thick be 0.5 millimeter, relative dielectric constant ε r =4.4, the single-clad board of loss angle tangent tans=0.02; Described anti-metal device comprises 64 electro-magnetic bandgap unit by 8 × 8 matrix arrangements, described electro-magnetic bandgap unit length of side Lx=16 millimeter, W s=1.8 millimeters, thickness is 0.5 millimeter, relative dielectric constant ε r =4.4, loss angle tangent tans=0.02; The dielectric layer of signal receiver is adjacent with the metal level of anti-metal device, and distance is 12 millimeters.
8. the WIFI antenna according to claim 5,6 or 7, is characterized in that:
The metal level of the single-clad board that described signal receiver adopts makes the circular-shaped monopole minor structure of coplanar waveguide structure feed, comprise a circular radiator, a coplanar waveguide structure and two metal ground, described circular radiator radius is 18 millimeters, described coplanar waveguide structure length is 46 millimeters, wide is 5 millimeters, described metal ground length and width is 42 millimeters, is 0.8 millimeter with the spacing of described coplanar waveguide structure.
CN201410043435.4A 2014-01-29 2014-01-29 A kind of anti-metal device and WIFI antennas CN104659485B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104659478A (en) * 2014-01-29 2015-05-27 广西科技大学 Flat antenna
WO2017156906A1 (en) * 2016-03-18 2017-09-21 广东欧珀移动通信有限公司 Metal shell, antenna apparatus, and mobile terminal

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4906585B2 (en) * 2007-05-16 2012-03-28 三菱電機株式会社 EBG material
CN102456951A (en) * 2010-10-14 2012-05-16 中国移动通信集团江苏有限公司 Base station antenna
CN102820501A (en) * 2012-07-03 2012-12-12 北京邮电大学 Ultra wideband antenna-oriented crossed H-shaped slot fractal UC-EBG (Uniplanar Compact Electromagnetic bandgap) structure and design method thereof
CN102834974A (en) * 2010-04-28 2012-12-19 古河电气工业株式会社 Plane-structured ebg
US20130214984A1 (en) * 2012-02-22 2013-08-22 U.S. Army Research Laboratory Attn: Rdrl-Loc-I Broadband electromagnetic band-gap (ebg) structure
CN203747039U (en) * 2014-01-29 2014-07-30 广西科技大学 Anti-metal device and WIFI antenna

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4906585B2 (en) * 2007-05-16 2012-03-28 三菱電機株式会社 EBG material
CN102834974A (en) * 2010-04-28 2012-12-19 古河电气工业株式会社 Plane-structured ebg
CN102456951A (en) * 2010-10-14 2012-05-16 中国移动通信集团江苏有限公司 Base station antenna
US20130214984A1 (en) * 2012-02-22 2013-08-22 U.S. Army Research Laboratory Attn: Rdrl-Loc-I Broadband electromagnetic band-gap (ebg) structure
CN102820501A (en) * 2012-07-03 2012-12-12 北京邮电大学 Ultra wideband antenna-oriented crossed H-shaped slot fractal UC-EBG (Uniplanar Compact Electromagnetic bandgap) structure and design method thereof
CN203747039U (en) * 2014-01-29 2014-07-30 广西科技大学 Anti-metal device and WIFI antenna

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104659478A (en) * 2014-01-29 2015-05-27 广西科技大学 Flat antenna
CN104659478B (en) * 2014-01-29 2017-09-05 广西科技大学 Flat aerial
WO2017156906A1 (en) * 2016-03-18 2017-09-21 广东欧珀移动通信有限公司 Metal shell, antenna apparatus, and mobile terminal

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