CN105226391A - There is the ultra wide band resistance antenna of rectangle stopband characteristic - Google Patents
There is the ultra wide band resistance antenna of rectangle stopband characteristic Download PDFInfo
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- CN105226391A CN105226391A CN201510700939.3A CN201510700939A CN105226391A CN 105226391 A CN105226391 A CN 105226391A CN 201510700939 A CN201510700939 A CN 201510700939A CN 105226391 A CN105226391 A CN 105226391A
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Abstract
The present invention discloses a kind of ultra wide band resistance antenna with rectangle stopband characteristic, and by placing electromagnetic bandgap structure on the co-planar waveguide of ultra-wideband antenna or the feeder line of micro-band waveguide, the electromagnetic energy making certain frequency scope not by, thus produce stopband.EBG structure is strong resonance structure, has precipitous resonance curve, thus two EBG textural associations can produce the stopband of a rectangle together.Stop-band frequency and resistance band can be adjusted easily by the size adjusting two EBG structures, optimization efficiency is improved, saved system resource and related to efficiency.In addition, EBG structure is placed on feeder line, little on the impact of radiation patch.Thus, the antenna designed by the present invention is applicable to be existed in the radio ultra wide band system of arrowband crosstalk.
Description
Technical field
The present invention relates to ultra-wideband antenna field, be specifically related to a kind of ultra wide band resistance antenna with rectangle stopband characteristic.
Background technology
Closely the demand driving of high-data-rate wireless communication the development of ultra broadband (Ultra-Wideband, UWB) technology.But, often narrowband systems is there is again in radio ultra wide band system operational environment, as WLAN (wireless local area network) (WirelessLocal-AreaNetwork, WLAN, 5.150-5.825GHz) communicate with X-band down-link satellite (X-banddownlinksatellitecommunication, 7.10-7.76GHz) be located in the ultra-wideband communications frequency range of the 3.1-10.6GHz of FCC's defined.Mutual crosstalk between narrowband systems and UWB system has a strong impact on the quality of communication.Solve that one of crosstalk efficient and the method for economy on ultra-wideband antenna, realizes a stopband, being fallen by clutter reduction foremost in system.
At present, many to the research of ultra wide band resistance antenna both at home and abroad, the method that they produce stopband is generally cutting or use spurious resonance unit in radiation patch or floor, as notification number " a kind of bluetooth ultra-wideband antenna with two trap characteristic " disclosed in the Chinese invention patent application of CN104485504A, the Chinese invention patent application disclosed " a kind of ultra-wideband antenna with pair trap characteristic " of notification number to be the Chinese invention patent application of CN103956572A disclosed " having the ultra-wideband antenna that three bands resistance traps and extra Big Dipper band lead to band characteristic " and notification number be CN104638355A, although these researchs all create stopband on the ultra wideband frequency of antenna, but they have a common shortcoming, namely their stopband curve is all comparatively sharp-pointed.And disturb arrowband to be have certain frequency range (if WLAN is from 5.150-5.825GHz, X-band down-link satellite communications band is from 7.10-7.76GHz), so just make to suppress to have a greatly reduced quality to the edge frequencies of interference arrowband.
Summary of the invention
To be solved by this invention is the problem that the stopband of existing antenna is comparatively sharp-pointed, provides a kind of ultra wide band resistance antenna with rectangle stopband characteristic.
For solving the problem, the present invention is achieved by the following technical solutions:
Have a ultra wide band resistance antenna for rectangle stopband characteristic, comprise ultra-wideband antenna body, this ultra-wideband antenna body comprises medium substrate and posts 2 metal floor, holding wire and radiators formations at medium substrate upper surface; Wherein radiator and holding wire are positioned at the middle part of medium substrate 1, and radiator is connected with one end of holding wire; 2 metal floors then divide the left and right sides being in holding wire; The co-planar waveguide that metal floor and holding wire are formed; Its difference is: also comprise at least 2 spaced electromagnetic bandgap structures further;
Each electromagnetic bandgap structure is formed by metal patch and shorting pin; Metal patch posts the lower surface at medium substrate; One end of shorting pin is connected with metal patch, and the other end is then connected through the holding wire of medium substrate and ultra-wideband antenna body or radiator.
In such scheme, the size of the metal patch of all electromagnetic bandgap structures is not identical, makes the difference of the resonance frequency of each electromagnetic bandgap structure, to form rectangle stopband characteristic.
In such scheme, shorting pin is connected on the edge of metal patch near the side of holding wire, to improve radiance.
In such scheme, shorting pin passes perpendicularly through medium substrate.
In such scheme, the other end of the shorting pin of all electromagnetic bandgap structures is all connected with holding wire; Or the other end of the shorting pin of all electromagnetic bandgap structures is all connected with radiator; Or the other end of the shorting pin of a part of electromagnetic bandgap structure is all connected with holding wire, the other end of the shorting pin of another electromagnetic bandgap structure is all connected with radiator.
Another kind has the ultra wide band resistance antenna of rectangle stopband characteristic, and comprise ultra-wideband antenna body, this ultra-wideband antenna body comprises medium substrate, metal floor, holding wire and radiator and forms; Wherein radiator and holding wire post the upper surface in medium substrate, and radiator is connected with one end of holding wire; Metal floor posts the lower surface in medium substrate; Micro-band waveguide that metal floor and holding wire are formed; Its difference is: also comprise at least 2 spaced electromagnetic bandgap structures further; Each electromagnetic bandgap structure is formed by metal patch and shorting pin; Metal patch posts the upper surface at medium substrate; One end of shorting pin is connected with metal patch, and the other end is then connected with the metal floor of ultra-wideband antenna body through medium substrate.
In such scheme, the size of the metal patch of all electromagnetic bandgap structures is not identical, makes the difference of the resonance frequency of each electromagnetic bandgap structure, to form rectangle stopband characteristic.
In such scheme, shorting pin is connected on the edge of metal patch near the side of holding wire, to improve radiance.
In such scheme, shorting pin passes perpendicularly through medium substrate.
In such scheme, all electromagnetic bandgap structures are all positioned at the same side of holding wire.
Compared with prior art, the present invention is by the co-planar waveguide (Coplanarwaveguide at ultra-wideband antenna, CPW) feeder line is placed electro-magnetic bandgap (Electromagneticbandgap, EBG) structure, the electromagnetic energy making certain frequency scope not by, thus produce stopband.EBG structure is strong resonance structure, has precipitous resonance curve, thus two EBG textural associations can produce the stopband of a rectangle together.Stop-band frequency and resistance band can be adjusted easily by the size adjusting two EBG structures, optimization efficiency is improved, saved system resource and related to efficiency.In addition, EBG structure is placed on feeder line, little on the impact of radiation patch.Thus, the antenna designed by the present invention is applicable to be existed in the radio ultra wide band system of arrowband crosstalk.
Accompanying drawing explanation
Fig. 1 is a kind of front elevation with the ultra wide band resistance antenna of rectangle stopband characteristic;
Fig. 2 is a kind of back view with the ultra wide band resistance antenna of rectangle stopband characteristic;
Fig. 3 is a kind of end view with the ultra wide band resistance antenna of rectangle stopband characteristic;
Fig. 4 is the S11 curve of example 1 antenna of antenna shown in Fig. 1-3;
Fig. 5 is the antenna pattern of example 1 antenna at 3.5GHz of antenna shown in Fig. 1-3;
Fig. 6 is the antenna pattern of example 1 antenna at 7.0GHz of antenna shown in Fig. 1-3;
Fig. 7 is the antenna pattern of example 1 antenna at 10.0GHz of antenna shown in Fig. 1-3;
Fig. 8 is the S11 curve of example 2 antenna of antenna shown in Fig. 1-3;
Fig. 9 is the antenna pattern of example 2 antenna at 3.5GHz of antenna shown in Fig. 1-3;
Figure 10 is the antenna pattern of example 2 antenna at 6.0GHz of antenna shown in Fig. 1-3;
Figure 11 is the antenna pattern of example 2 antenna at 10.0GHz of antenna shown in Fig. 1-3.
Figure 12 is the front elevation that another kind has the ultra wide band resistance antenna of rectangle stopband characteristic;
Figure 13 is the back view that another kind has the ultra wide band resistance antenna of rectangle stopband characteristic;
Figure 14 is the end view that another kind has the ultra wide band resistance antenna of rectangle stopband characteristic.
Number in the figure: 1, medium substrate; 2, metal floor; 3, holding wire; 4, radiator; 5, electromagnetic bandgap structure; 5-1, metal patch; 5-2 shorting pin
Embodiment
Below in conjunction with the drawings and the specific embodiments, the present invention is described in detail, and the present embodiment is implemented under premised on invention technical scheme, gives detailed execution mode and specific operation process, but protection scope of the present invention is not limited to following embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one:
There is a ultra wide band resistance antenna for rectangle stopband characteristic, as Figure 1-3, be a kind of coplanar waveguide antenna, comprise ultra broadband (UWB) antenna body and at least 2 electro-magnetic bandgap (EBG) structures 5.
Ultra-wideband antenna body is identical with the structure of existing coplanar waveguide antenna or similar, is made up of at the metal floor 2 of medium substrate 1 upper surface, holding wire 3 and radiator 4 medium substrate 1 and posting.Radiator 4 and holding wire 3 are positioned at the middle part of medium substrate 1, and radiator 4 is connected with one end of holding wire 3, and both composite class are like T-shaped.2 metal floors 2 items points are in the left and right sides of holding wire 3, the co-planar waveguide (CPW) that metal floor 2 and holding wire 3 are formed.The shape of radiator 4 can design as required, as being circular, oval, square, rectangle, triangle or other shapes.The shape of holding wire 3 is long straight bar.The shape of 2 metal floors 2 is rectangle, and size is identical.The height of 2 metal floors 2 is all less than or equal to the length of holding wire 3.
In the present embodiment, radiator 4 adopts oval paster structure, and adopts and form co-planar waveguide by metal floor 2 and holding wire 3 and carry out feed, and radiator 4 and co-planar waveguide are positioned at the same face of medium substrate 1.The width of holding wire 3 is 3.5mm, and the gap between holding wire 3 and metal floor 2 is 0.2mm, and therefore the characteristic impedance of co-planar waveguide (CPW) is 50 Ω.The major axis radius of radiator 4 is 13mm, and minor axis radius is 9.5mm, with the scope making operating frequency cover 3.1-10.6GHz.
Each electromagnetic bandgap structure 5 is formed by metal patch 5-1 and shorting pin 5-2.Metal patch 5-1 posts the lower surface at medium substrate 1.One end of shorting pin 5-2 is connected with metal patch 5-1, and the other end is then connected through the holding wire 3 of medium substrate 1 and ultra-wideband antenna body or radiator 4, and now, holding wire 3 or radiator 4 use as the floor of electromagnetic bandgap structure 5.The number of electromagnetic bandgap structure 5 is determined according to the requirement of resistance band, and resistance band wider electromagnetic bandgap structure 5 number is more.When specifically laying, between every 2 electromagnetic bandgap structures 5, need spaced certain distance.In order to antenna can be allowed, there is stopband characteristic, on the feeder line that electromagnetic bandgap structure 5 should be positioned at antenna or near feeder line, specifically, the distribution mode of electromagnetic bandgap structure 5 can adopt following several: all the other end of the shorting pin 5-2 of electromagnetic bandgap structure 5 is all connected with holding wire 3; The other end of the shorting pin 5-2 of whole electromagnetic bandgap structure 5 is all connected with radiator 4; The other end of the shorting pin 5-2 of part electromagnetic bandgap structure 5 is all connected with holding wire 3, and the other end of the shorting pin 5-2 of another electromagnetic bandgap structure 5 is all connected with radiator 4.The shape of metal patch 5-1 is for arrange as required, and can be circular, oval, square, rectangle, triangle or other shapes, size designs according to design requirement.When shorting pin 5-2 is connected with metal patch 5-1, it can be connected to the center of metal patch 5-1 or any place of metal patch 5-1, but in order to improve radiance, shorting pin 5-2 is connected on the edge of metal patch 5-1 near the side of holding wire 3 as far as possible.Shorting pin 5-2 can tilt or vertically run through medium substrate 1.The size of the metal patch 5-1 of all electromagnetic bandgap structures 5 is all not identical, can be realized the stopband of any frequency range by the dimensional parameters adjusting electromagnetic bandgap structure 5.The resonance frequency of each electromagnetic bandgap structure 5 is close, forms the stopband of rectangle.
In the present embodiment, metal patch 5-1 adopts rectangular configuration, and is positioned at immediately below holding wire 3.Shorting pin 5-2 perpendicular to plane residing for metal patch 5-1 and holding wire 3, and is embedded in medium substrate 1.One end of shorting pin 5-2 is connected with metal patch 5-1, the other end is connected with holding wire 3, and now, holding wire 3 is the floor applications as electromagnetic bandgap structure 5.The position of shorting pin 5-2 can be arranged in the optional position of metal patch 5-1, and in the present embodiment in order to obtain better performance and less size, shorting pin 5-2 is arranged on the edge of metal patch 5-1.For obtaining the stopband of rectangular property, the present embodiment comprises 2 electromagnetic bandgap structures 5, i.e. 2 metal patch 5-1 and 2 shorting pin 5-2.First metal patch 5-1 and the second metal patch 5-1 is all positioned at immediately below holding wire 3, one end of first shorting pin 5-2 connects the first metal patch 5-1, one end of other end connection signal line 3, second shorting pin 5-2 connects the second metal patch 5-1, other end connection signal line 3.The resonance frequency fusion adjacent to each other of 2 electromagnetic bandgap structures 5, thus form rectangular property stopband.By adjusting the size of 2 metal patch 5-1, both can adjust the frequency of rectangular property stopband, also can adjust the width of rectangular property stopband, the performance after hindering antenna optimization to make described ultra wide band meets the requirement suppressing different arrowband crosstalk frequency range.
WLAN frequency range is positioned at for making the resonance frequency of electromagnetic bandgap structure 5, the parameter of the metal patch 5-1 of 2 rectangles of electromagnetic bandgap structure 5 is respectively: a1 × b1=3.5mm × 7.9mm and a2 × b2=3.5mm × 7.7mm, wherein a1 and b1 is the length of side of the first metal patch 5-1, a2 and b2 is the length of side of the second metal patch 5-1.
Fig. 4 is the S11 curve of example 1 antenna.Generally, if the S11 of antenna in a certain frequency range is less than-10dB, then think that this frequency range is the passband of normal work; If the S11 of a certain frequency range is greater than-10dB, then think that this frequency range is stopband.The S11 of antenna in 5.02-5.98GHz band limits of example 1 is greater than-10dB and maximum reaches-0.18dB, is obvious stopband, covers whole WLAN frequency range; And the S11 of other UWB frequency ranges outside stopband is less than-10dB, coupling is good.And from S11 curve, stopband shape, similar in appearance to rectangle, makes the inhibition of stopband to whole WLAN frequency range fine.
Fig. 5, Fig. 6 and Fig. 7 are respectively the antenna pattern of example 1 antenna at 3.5GHz, 7.0GHz and 10.0GHz.Visible, it is the antenna pattern of the figure of eight that the E face of antenna is close to, and H face is close to omnidirectional radiation, is applicable to ultra-wideband communications.
X-band down-link satellite communications band is positioned at for making the resonance frequency of electromagnetic bandgap structure 5, the parameter of the metal patch 5-1 of 2 rectangles of electromagnetic bandgap structure 5 is: a1 × b1=2.8mm × 5.6mm and a2 × b2=2.8mm × 5.8mm, wherein a1 and b1 is the length of side of the first metal patch 5-1, a2 and b2 is the length of side of the second metal patch 5-1.
Fig. 8 is the S11 curve of example 2 antenna.Visible, the S11 of antenna in 7.03-7.88GHz band limits of example 2 is greater than-10dB and maximum reaches-1.19dB, is obvious stopband, covers whole X-band down-link satellite communications band; And the S11 of other UWB frequency ranges outside stopband is less than-10dB, coupling is good.And from S11 curve, similar to example 1 antenna, the stopband shape of example 2 antenna, also similar in appearance to rectangle, makes the inhibition of stopband to whole X-band down-link satellite communications band fine.
Fig. 9, Figure 10 and Figure 11 are respectively the antenna pattern of example 2 antenna at 3.5GHz, 6.0GHz and 10.0GHz.Visible, it is the antenna pattern of the figure of eight that the E face of antenna is close to, and H face is close to omnidirectional radiation, is applicable to ultra-wideband communications.
Visible, electro-magnetic bandgap (EBG) structures different for several resonance frequencys is placed on the feeder line (i.e. holding wire) of the co-planar waveguide of ultra-wideband antenna by the present invention, make the stopband fusion adjacent to each other of different electro-magnetic bandgap (EBG) structure, form the stopband with rectangular property.WLAN (5.150-5.825GHz) can be effectively suppressed to communicate with X-band down-link satellite the interference of narrowband systems such as (7.10-7.76GHz).
In a word, the present invention is by using two electro-magnetic bandgap (EBG) unit to realize rectangle stopband on co-planar waveguide (CPW) feeder line of ultra-wideband antenna.EBG structure is positioned on feeder line by the method, does not affect the CURRENT DISTRIBUTION of radiator, without the need to considering the impact of stopband design cell on aerial radiation during design; And the method changes stop-band frequency by the parameter changing electro-magnetic bandgap (EBG) structure, makes optimization efficiency improve, has saved system resource and design efficiency; And the ultra wide band that the present embodiment provides hinders the stopband characteristic that antenna has rectangle, can be applicable in the radio ultra wide band system of disturbance environment.
Embodiment two:
Another kind has the ultra wide band resistance antenna of rectangle stopband characteristic, as shown in figs. 12-14, is the micro-band radiating guide of one, comprises ultra broadband (UWB) antenna body and at least 2 electro-magnetic bandgap (EBG) structures 5.
Ultra-wideband antenna body is identical with the structure of existing microstrip antenna or similar, is made up of medium substrate 1, metal floor 2, holding wire 3 and radiator 4.Radiator 4 and holding wire 3 post the upper surface at medium substrate 1, and are positioned at the middle part of medium substrate 1, and radiator 4 is connected with one end of holding wire 3, and both composite class are like T-shaped.Metal floor 2 posts the lower surface at medium substrate 1, and relative with the position of holding wire 3, and is only overlying on region residing for holding wire 3, micro-band waveguide that metal floor 2 and holding wire 3 are formed.The shape of radiator 4 can design as required, as being circular, oval, square, rectangle, triangle or other shapes.The shape of holding wire 3 is long straight bar.The shape of 2 metal floors 2 is rectangle, and size is identical.The height of 2 metal floors 2 is all less than or equal to the length of holding wire 3.In the present embodiment, radiator 4 adopts oval paster structure, and adopts and form micro-band waveguide by metal floor 2 and holding wire 3 and carry out feed, and radiator 4 and holding wire 3 are positioned at the same face of medium substrate 1.
Each electromagnetic bandgap structure 5 is formed by metal patch 5-1 and shorting pin 5-2.Metal patch 5-1 posts the upper surface at medium substrate 1.One end of shorting pin 5-2 is connected with metal patch 5-1, and the other end is then connected with the metal floor 2 of ultra-wideband antenna body through medium substrate 1.Metal floor 2 uses as the floor of electromagnetic bandgap structure 5 and ultra-wideband antenna body simultaneously.The number of electromagnetic bandgap structure 5 is determined according to the requirement of resistance band, and resistance band wider electromagnetic bandgap structure 5 number is more.When specifically laying, between every 2 electromagnetic bandgap structures 5, need spaced certain distance.In order to antenna can be allowed to have stopband characteristic, on the feeder line that electromagnetic bandgap structure 5 should be positioned at antenna or near feeder line, specifically, all electromagnetic bandgap structures 5 are distributed in the same side of holding wire 3.The shape of metal patch 5-1 is for arrange as required, and can be circular, oval, square, rectangle, triangle or other shapes, size designs according to design requirement.When shorting pin 5-2 is connected with metal patch 5-1, it can be connected to the center of metal patch 5-1 or any place of metal patch 5-1, but in order to improve performance, shorting pin 5-2 is connected on the edge of metal patch 5-1 near the side of holding wire 3 as far as possible.Shorting pin 5-2 can tilt or vertically run through medium substrate 1.The size of the metal patch 5-1 of all electromagnetic bandgap structures 5 is all not identical, can be realized the stopband of any frequency range by the dimensional parameters adjusting electromagnetic bandgap structure 5.The resonance frequency of each electromagnetic bandgap structure 5 is close, forms the stopband of rectangle.
In the present embodiment, metal patch 5-1 adopts rectangular configuration.Shorting pin 5-2 perpendicular to plane residing for metal patch 5-1 and holding wire 3, and is embedded in medium substrate 1.In order to obtain better performance and less size, shorting pin 5-2 is arranged on the edge of metal patch 5-1.For obtaining the stopband of rectangular property, the present embodiment comprises 2 electromagnetic bandgap structures 5, i.e. 2 metal patch 5-1 and 2 shorting pin 5-2.First metal patch 5-1 and the second metal patch 5-1 is all positioned at the homonymy of holding wire 3, one end of first shorting pin 5-2 connects the first metal patch 5-1, one end of other end connection metal floor 2, second shorting pin 5-2 connects the second metal patch 5-1, and the other end is connection metal floor 2 also.The resonance frequency fusion adjacent to each other of 2 electromagnetic bandgap structures 5, thus form rectangular property stopband.By adjusting the size of 2 metal patch 5-1, both can adjust the frequency of rectangular property stopband, also can adjust the width of rectangular property stopband, the performance after hindering antenna optimization to make described ultra wide band meets the requirement suppressing different arrowband crosstalk frequency range.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. there is the ultra wide band resistance antenna of rectangle stopband characteristic, comprise ultra-wideband antenna body, this ultra-wideband antenna body comprises medium substrate (1) and posts and forms at 2 metal floors (2) of medium substrate (1) upper surface, holding wire (3) and radiator (4); Wherein radiator (4) and holding wire (3) are positioned at the middle part of medium substrate 1, and radiator (4) is connected with one end of holding wire (3); 2 metal floors (2) then divide the left and right sides being in holding wire (3); The co-planar waveguide that metal floor (2) and holding wire (3) are formed; It is characterized in that: also comprise at least 2 spaced electromagnetic bandgap structures (5) further;
Each electromagnetic bandgap structure (5) is formed by metal patch (5-1) and shorting pin (5-2); Metal patch (5-1) posts the lower surface in medium substrate (1); One end of shorting pin (5-2) is connected with metal patch (5-1), and the other end is then connected through the holding wire (3) of medium substrate (1) and ultra-wideband antenna body or radiator (4).
2. the ultra wide band resistance antenna with rectangle stopband characteristic according to claim 1, is characterized in that: the size of the metal patch (5-1) of all electromagnetic bandgap structures (5) is all not identical.
3. the ultra wide band resistance antenna with rectangle stopband characteristic according to claim 1, is characterized in that: shorting pin (5-2) is connected on the edge of metal patch (5-1) near the side of holding wire (3).
4. the ultra wide band resistance antenna with rectangle stopband characteristic according to claim 1, is characterized in that: shorting pin (5-2) passes perpendicularly through medium substrate (1).
5. the ultra wide band resistance antenna with rectangle stopband characteristic according to claim 1, is characterized in that: the other end of the shorting pin (5-2) of all electromagnetic bandgap structures (5) is all connected with holding wire (3); Or the other end of the shorting pin (5-2) of all electromagnetic bandgap structures (5) is all connected with radiator (4); Or the other end of the shorting pin (5-2) of a part of electromagnetic bandgap structure (5) is all connected with holding wire (3), the other end of the shorting pin (5-2) of another electromagnetic bandgap structure (5) is all connected with radiator (4).
6. there is the ultra wide band resistance antenna of rectangle stopband characteristic, comprise ultra-wideband antenna body, this ultra-wideband antenna body comprises medium substrate (1), metal floor (2), holding wire (3) and radiator (4) and forms; Wherein radiator (4) and holding wire (3) post the upper surface in medium substrate (1), and radiator (4) is connected with one end of holding wire (3); Metal floor (2) posts the lower surface in medium substrate (1); Micro-band waveguide that metal floor (2) and holding wire (3) are formed; It is characterized in that: also comprise at least 2 spaced electromagnetic bandgap structures (5) further;
Each electromagnetic bandgap structure (5) is formed by metal patch (5-1) and shorting pin (5-2); Metal patch (5-1) posts the upper surface in medium substrate (1); One end of shorting pin (5-2) is connected with metal patch (5-1), and the other end is then connected with the metal floor (2) of ultra-wideband antenna body through medium substrate (1).
7. the ultra wide band resistance antenna with rectangle stopband characteristic according to claim 6, is characterized in that: the size of the metal patch (5-1) of all electromagnetic bandgap structures (5) is all not identical.
8. the ultra wide band resistance antenna with rectangle stopband characteristic according to claim 6, is characterized in that: shorting pin (5-2) is connected on the edge of metal patch (5-1) near the side of holding wire (3).
9. the ultra wide band resistance antenna with rectangle stopband characteristic according to claim 6, is characterized in that: shorting pin (5-2) passes perpendicularly through medium substrate (1).
10. the ultra wide band resistance antenna with rectangle stopband characteristic according to claim 6, is characterized in that: all electromagnetic bandgap structures (5) are all positioned at the same side of holding wire (3).
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Application publication date: 20160106 |