CN202855893U - Left-handed material based X-waveband dual-band dielectric resonator antenna - Google Patents
Left-handed material based X-waveband dual-band dielectric resonator antenna Download PDFInfo
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- CN202855893U CN202855893U CN 201220330370 CN201220330370U CN202855893U CN 202855893 U CN202855893 U CN 202855893U CN 201220330370 CN201220330370 CN 201220330370 CN 201220330370 U CN201220330370 U CN 201220330370U CN 202855893 U CN202855893 U CN 202855893U
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Abstract
The utility model relates to a left-handed material based X-waveband dual-band dielectric resonator antenna which comprises a metal floor board, a dielectric resonator, a microstrip patch, a probe and left-handed material layers. The dielectric resonator feeds through the probe and the microstrip patch. The dielectric resonator is fixed on the microstrip patch, and there is an air layer between the dielectric resonator and the metal floor board. The left-handed material layers are prepared from metal strip arrays periodically printed by a circuit board etching technology. Each layer is printed in a two-sided symmetrical manner and covers right above the dielectric resonator antenna. The existence of the air layer between the resonator and the floor board can reduce Q value of the antenna and increase bandwidth of the antenna. By the utilization of panel focusing of the left-handed material layers, directionality of the antenna can be raised. By the utilization of amplification characteristic of the left-handed material layers on an evanescent wave, a weak electromagnetic signal is amplified so as to raise the gain of the antenna.
Description
Technical field
The utility model relates to a kind of medium resonator antenna, particularly relates to a kind of double frequency medium resonator antenna with floor air layer and two left hand passband structure left-handed materials layers, and this structure can be improved the bandwidth of antenna, directivity and gain.
Background technology
Dielectric resonator is since being used as antenna as radiator, medium resonator antenna is because its volume is little, lightweight, cost is low, easy of integration, and not having surface wave loss and a metal loss, radiation efficiency is high, and feeding classification is flexible and changeable etc., and advantage has obtained using more and more widely in Modern wireless communication.The antenna of the X-band purposes such as the professional satellite of research, broadcasting satellite, fixed telecommunication, earth exploration satellite, meteorological satellite of having living space in the space application facet.But dielectric resonator is because its Q value is higher, the bandwidth relative narrower, at present main research is carried out for the medium resonator antenna unit, the gain of individual antenna is also more limited, and its directivity also has much room for improvement, this has affected antenna application in practice greatly, so also need the performance of corresponding technological improvement antenna.
Left-handed materials is that a kind of dielectric constant and magnetic permeability are the artificial composite structure electromagnetic material of negative value simultaneously, so it has unusual optics and the electromagnetism phenomenons such as negative refraction, contrary Cerenkov radiation, reversed Doppler effect, dull and stereotyped focusing.The proposition of left-handed materials is expected to be applied to the aspects such as detector, stealth material, microwave device, antenna.Utilize the flat board of left-handed materials to focus on, can improve the directivity of antenna, utilize left-handed materials to the amplification characteristic of evanescent wave, amplify weak electromagnetic signal, thereby improve the gain of antenna.
The utility model content
The purpose of this utility model is to overcome traditional sucrose resonant aerial narrow bandwidth, directivity is poor, low shortcoming gains, a kind of X-band double frequency medium resonator antenna based on left-handed materials is provided, and this antenna works in X-band, and is simple in structure, size is little, cost is low, is convenient to batch production, has good prospect in radio communication and Aerospace Satellite application facet.
Design of the present utility model is: by introducing the Q value that can reduce antenna of air layer between dielectric resonator and the floor, increase the bandwidth of antenna, utilize the flat board of left-handed materials layer to focus on, can improve the directivity of antenna, utilize the left-handed materials layer to the amplification characteristic of evanescent wave, amplify weak electromagnetic signal, thereby improve the gain of antenna, microband paste can improve and regulate the coupling between feed probes and the dielectric resonator.
X-band double frequency medium resonator antenna based on left-handed materials of the present utility model, comprise metal floor, dielectric resonator, microband paste, probe and left-handed materials layer, it is characterized in that described dielectric resonator is by probe and microband paste feed, dielectric resonator is fixed on the microband paste, and and one deck air layer arranged between metal floor, the left-handed materials layer is printed the bonding jumper array by the circuit board lithographic technique cycle and is made, every one deck all takes double-sided symmetrical to print, be covered in directly over the dielectric resonator, be fixedly connected with by screw between metal floor and the left-handed materials layer.
Described metal floor is rectangular slab, and it is of a size of W * L, W=L=40mm ± 10mm.
Described dielectric resonator is half standard cylinder, and it is of a size of radius a=5mm ± 1mm, and long b=17mm ± 2mm is horizontally placed on the metal floor, and between the two every one deck air layer, the air layer height is g=2mm ± 1mm.
Described microband paste is rectangular microband paste, and it is of a size of c * d, c=4mm ± 1mm, d=5mm ± 1mm.
Described probe is positioned on the metal floor, lower termination coaxial interface, and the upper end links to each other with microband paste, and both are coupled rear is the dielectric resonator feed jointly, and probe length is 2mm ± 0.2mm.
Described left-handed materials layer can be individual layer or bilayer, the bonding jumper array element in each cycle is made of adjacent two parts, every part all is made of two the long bonding jumpers in the outside and inboard two short bonding jumpers, totally 4 long bonding jumpers and 4 short bonding jumpers, article 4, long bonding jumper consistent size, article 4, lack bonding jumper and be divided into two packet sizes according to frequency, can be divided into three kinds of permutation and combination distributes arbitrarily, long bonding jumper length L 1=19mm ± 0.5mm, width W 1=1.5mm ± 0.2mm, two groups short bonding jumpers are respectively length L 2=8mm ± 2mm, width W 2=0.8mm ± 0.4mm, length L 3=8mm ± 2mm, width W 3=0.8mm ± 0.4mm, centre distance t=1.8mm between bonding jumper ± 0.4mm, the bonding jumper etch thicknesses is 0.02～0.04mm.
Useful technique effect of the present utility model is embodied in several aspects:
1. simple in structure, volume is little, and is lightweight.X-band double frequency medium resonator antenna based on left-handed materials of the present utility model mainly is comprised of metal floor, dielectric resonator, microband paste, probe and left-handed materials layer, volume is little, simple in structure, be easy to processing, wherein the left-handed materials layer adopts the circuit board etching technique to print the bonding jumper array, is convenient to batch production.
2. larger bandwidth.X-band double frequency medium resonator antenna based on left-handed materials of the present utility model has been introduced one deck air layer between dielectric resonator and antenna, can reduce the Q value of antenna, increases the bandwidth of operation of antenna.
3. good directivity and higher gain.X-band double frequency medium resonator antenna based on left-handed materials of the present utility model has added the left-handed materials layer, utilize the flat board of left-handed materials layer to focus on, can improve the directivity of antenna, utilize the left-handed materials layer to the amplification characteristic of evanescent wave, amplify weak electromagnetic signal, thereby improve the gain of antenna.
4. radiation efficiency is high.Because dielectric resonator do not have surface wave loss and metal loss, so X-band double frequency medium resonator antenna based on left-handed materials of the present utility model has very high radiation efficiency.
Description of drawings
Fig. 1 (a) is the structural representation of the utility model embodiment 1, (b) is structural parameters figure.
Fig. 2 is the cell array plane schematic top plan view of the utility model embodiment 1 left-handed materials layer.
Fig. 3 is the periodic planes schematic top plan view of the utility model embodiment 1 left-handed materials layer.
Fig. 4 is the cell array floor map of the left-handed materials layer of the utility model embodiment 2.
Fig. 5 is the cell array floor map of the left-handed materials layer of the utility model embodiment 3.
Fig. 6 is the measurement of reflection-factor result of the utility model embodiment 1.
Fig. 7 be the utility model embodiment 1 at the antenna pattern of 8.6GHz, it is left: H plane pattern, the right side: E plane pattern.
Fig. 8 be the utility model embodiment 1 at the antenna pattern of 11.3GHz, it is left: H plane pattern, the right side: E plane pattern.
Embodiment
As shown in Figure 1, X-band double frequency medium resonator antenna based on left-handed materials of the present utility model, comprise metal floor 4, dielectric resonator 1, microband paste 2, probe 3 and left-handed materials layer 5, it is characterized in that described dielectric resonator 1 is by probe 3 and microband paste 2 feeds, dielectric resonator 1 is fixed on the microband paste 2, and and 4 of metal floors have one deck air layer, left-handed materials layer 5 is printed the bonding jumper array by the circuit board lithographic technique cycle and is made, every one deck all takes double-sided symmetrical to print, be covered in directly over the dielectric resonator 1, be fixedly connected with by screw between metal floor 4 and the left-handed materials layer 5.
What the utility model proposed is the dual-band antenna that is operated in X-band, so will fit the parameters that the X-band internal antenna is determined in experiment by computer mould first, particularly realize the regulation and control to left-handed materials layer region wave band, guarantee the working frequency range of left hand characteristic zone wave band coupling antenna.
Details are as follows for preferred embodiment of the present utility model (by reference to the accompanying drawings):
Embodiment 1: in conjunction with Fig. 1, Fig. 2, Fig. 3, by experiment and parameter optimization, in X-band, designed a kind of centre frequency of medium resonator antenna at the dual-band antenna of 8.6GHz and 11.3GHz, for the working frequency range with antenna mates, the centre frequency of making the left-handed materials layer also is 8.6GHz and 11.3GHz.Wherein: metal floor is of a size of W * L, W=L=50mm; The dielectric constant of dielectric resonator material is 10.2, radius a=5.4mm, long b=17.4mm; Metal floor air layer height is g=3mm; Microband paste is of a size of c * d, c=4mm, d=5mm; Probe length is 1.8mm; Present embodiment adopts double-deck left-handed materials layer, and it is 4.5 that the left-handed materials layer is selected dielectric constant, and thickness is the medium substrate of 0.5mm, length is 45mm, width is 35mm, long bonding jumper length L 1=19mm, width W 1=1.5mm, two groups short bonding jumpers are respectively length L 2=8.9mm, width W 2=0.8mm, length L 3=6.2mm, width W 3=0.8mm, centre distance t1=1.8mm between adjacent length bonding jumper, the centre distance t2=2.1mm between adjacent long bonding jumper.
Embodiment 2: present embodiment is identical with embodiment 1, also be operated in 8.6GHz and 11.3GHz frequency range, special feature is as shown in Figure 2, bonding jumper unit among the embodiment 1 is that the short bonding jumper intersection of two groups of different sizes is placed in two adjacent parts, and present embodiment as shown in Figure 4, every group short bonding jumper all is placed on respectively in the same end, and other parameters are all constant.
Embodiment 3: present embodiment is identical with embodiment 1, also be operated in 8.6GHz and 11.3GHz frequency range, special feature is as shown in Figure 2, bonding jumper unit among the embodiment 1 is that the short bonding jumper intersection of two groups of different sizes is placed in two adjacent parts, and present embodiment as shown in Figure 5, and every group short bonding jumper all is placed on respectively with in the part.For the centre frequency that makes the left-handed materials layer at 8.6GHz and 11.3GHz, adjust the size of short bonding jumper, length L 2=9mm, width W 2=0.8mm, length L 3=6.2mm, width W 3=0.8mm, other parameters are all constant.
Above-mentioned three embodiment have enumerated the left-handed materials layer according to the different three kinds of permutation and combination of placing of length bonding jumper, can well realize the frequency band match of left-handed materials layer and antenna.Be the measurement of reflection-factor result of embodiment 1 such as Fig. 6, substantially met the two-frequency operation frequency range at X-band, and two frequency ranges all have larger bandwidth.Fig. 7, Fig. 8 be respectively the utility model embodiment 1 at the antenna pattern of 8.6GHz and 11.3GHz, it is left to be the H plane pattern, the right side is the E plane pattern, has good directivity.After tested, the measurement of reflection-factor result of embodiment 2 and embodiment 3 is approximate identical with embodiment 1.
Major parameter scope of the present utility model is W=L=40mm ± 10mm, a=5mm ± 1mm, b=17mm ± 2mm, g=2mm ± 1mm, c=4mm ± 1mm, d=5mm ± 1mm, L1=19mm ± 0.5mm, W1=1.5mm ± 0.2mm, L2=8mm ± 2mm, W2=0.8mm ± 0.4mm, L3=8mm ± 2mm, W3=0.8mm ± 0.4mm, t1=1.8mm ± 0.4mm, t2=1.8mm ± 0.4mm, probe length 2mm ± 0.2mm.Similar to the aforementioned embodiment, can produce through the optimum organization of parameter in described scope and to meet the X-band double frequency medium resonator antenna based on left-handed materials of the present utility model.
Claims (6)
1. X-band double frequency medium resonator antenna based on left-handed materials, comprise metal floor (4), dielectric resonator (1), microband paste (2), probe (3) and left-handed materials layer (5), it is characterized in that described dielectric resonator (1) is by probe (3) and microband paste (2) feed, dielectric resonator (1) is fixed on the microband paste (2), and and between metal floor (4) one deck air layer is arranged, left-handed materials layer (5) is printed the bonding jumper array by the circuit board lithographic technique cycle and is made, every one deck all takes double-sided symmetrical to print, be covered in directly over the dielectric resonator (1), be fixedly connected with by screw between metal floor (4) and the left-handed materials layer (5).
2. the X-band double frequency medium resonator antenna based on left-handed materials according to claim 1 is characterized in that described metal floor (4) is rectangular slab, and it is of a size of W * L, W=L=40mm ± 10mm.
3. the X-band double frequency medium resonator antenna based on left-handed materials according to claim 1, it is characterized in that described dielectric resonator (1) is half standard cylinder, it is of a size of radius a=5mm ± 1mm, long b=17mm ± 2mm, be horizontally placed on the metal floor (4), every one deck air layer, the air layer height is g=2mm ± 1mm between the two.
4. the X-band double frequency medium resonator antenna based on left-handed materials according to claim 1 is characterized in that described microband paste (2) is rectangular microband paste, and it is of a size of c * d, c=4mm ± 1mm, d=5mm ± 1mm.
5. the X-band double frequency medium resonator antenna based on left-handed materials according to claim 1, it is characterized in that described probe (3) is positioned on the metal floor (4), lower termination coaxial interface, the upper end links to each other with microband paste (2), both are coupled rear is dielectric resonator (1) feed jointly, probe (3) length f=2mm ± 0.2mm.
6. the X-band double frequency medium resonator antenna based on left-handed materials according to claim 1, it is characterized in that described left-handed materials layer (5) can be individual layer or bilayer, the bonding jumper array element in each cycle is made of adjacent two parts, every part all is made of two the long bonding jumpers in the outside and inboard two short bonding jumpers, totally 4 long bonding jumpers and 4 short bonding jumpers, article 4, long bonding jumper consistent size, article 4, lack bonding jumper and be divided into two packet sizes according to frequency, can be divided into three kinds of permutation and combination distributes arbitrarily, long bonding jumper length L 1=19mm ± 0.5mm, width W 1=1.5mm ± 0.2mm, two groups short bonding jumpers are respectively length L 2=8mm ± 2mm, width W 2=0.8mm ± 0.4mm, length L 3=8mm ± 2mm, width W 3=0.8mm ± 0.4mm, the centre distance t=1.8mm between bonding jumper ± 0.4mm, the bonding jumper etch thicknesses is 0.02～0.04mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220330370 CN202855893U (en) | 2012-07-04 | 2012-07-04 | Left-handed material based X-waveband dual-band dielectric resonator antenna |
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| CN 201220330370 CN202855893U (en) | 2012-07-04 | 2012-07-04 | Left-handed material based X-waveband dual-band dielectric resonator antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751564A (en) * | 2012-07-04 | 2012-10-24 | 中国矿业大学(北京) | X wave band double-frequency dielectric resonator antenna based on left-hand material |
| CN104966908A (en) * | 2015-04-28 | 2015-10-07 | 四川省韬光通信有限公司 | Vertical polarization dielectric resonator base station antenna |
-
2012
- 2012-07-04 CN CN 201220330370 patent/CN202855893U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751564A (en) * | 2012-07-04 | 2012-10-24 | 中国矿业大学(北京) | X wave band double-frequency dielectric resonator antenna based on left-hand material |
| CN102751564B (en) * | 2012-07-04 | 2015-03-11 | 中国矿业大学(北京) | X wave band double-frequency dielectric resonator antenna based on left-hand material |
| CN104966908A (en) * | 2015-04-28 | 2015-10-07 | 四川省韬光通信有限公司 | Vertical polarization dielectric resonator base station antenna |
| CN104966908B (en) * | 2015-04-28 | 2018-07-17 | 四川省韬光通信有限公司 | A kind of vertical polarization dielectric resonator antenna for base station |
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Granted publication date: 20130403 Termination date: 20140704 |
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