CN102570015A - Design method of low-profile dual-polarized tile antenna unit adopting T-shaped microstrip feeding - Google Patents
Design method of low-profile dual-polarized tile antenna unit adopting T-shaped microstrip feeding Download PDFInfo
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- CN102570015A CN102570015A CN2011103671540A CN201110367154A CN102570015A CN 102570015 A CN102570015 A CN 102570015A CN 2011103671540 A CN2011103671540 A CN 2011103671540A CN 201110367154 A CN201110367154 A CN 201110367154A CN 102570015 A CN102570015 A CN 102570015A
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Abstract
The invention relates to a design method of a low-profile dual-polarized tile antenna unit adopting T-shaped microstrip feeding. The design method is characterized in that an antenna patch unit adopts a T-shaped microstrip line for coupled feeding, a feeding network and the patch unit are located in one layer, and two polarizing and feeding networks are arranged; and a parasitic unit is located just above an excitation unit. The antenna has capability of suppressing antenna system low-frequency signal interference, and has standing wave ratio smaller than 1.8 and cross polarization level smaller than -17dB in 20% relative bandwidth; and the T-shaped microstrip line is adopted for coupled feeding as well as is located in one plane with an antenna radiation unit, thus the thickness of the antenna unit is significantly reduced. The obtained antenna unit not only can be used as a unit of a tile type array antenna, but also can be independently used as a transceiver antenna of a polarization diversity system.
Description
Affiliated technical field
The present invention relates to the low section dual polarization tile antennas unit design method of a kind of T shaped microstrip feed.Specifically be that chip unit is through adding the micro-strip paster antenna of parasitic element broadening bandwidth with layer T shaped microstrip line coupling feed, dual polarization, top.Antenna of the present invention has the advantage that feed structure is simple, can suppress the low frequency signal interference.Not only can also can be used as the sending and receiving antenna of polarization diversity system independently as the unit of tile type array antenna.
Background technology
The integrated antenna array module of tile type is horizontal integrated vertical assembling (Griffin D W; Parfitt A J.Electromagnetic design aspects of packages for monolithic microwave integrated circuit-based arrays with integrated antenna elements [J] .IEEE Transactions Oil Antennas and Propagation; 1995; 43 (9): 927-931); Be particularly suitable for active phase array antenna use (Peng Xianglong. phased array antenna integrated technology [J], telecom technology .2010,50 (10): 112-117).The tile type antenna array module requires antenna element to have very little section, and micro-strip paster antenna is low and be easy to processing by wide selection because of section.The dual-polarized, microstrip patch antenna generally uses square patch (clock up time, microstrip antenna is theoretical and use publishing house of Xian Electronics Science and Technology University, 1991).But the feedback input impedance of square patch antenna limit is greater than 300 Ω; Normal employing adds impedance transformer, embeds mode resolved impedance spectroscopy matching problem (Stutzman&Thiele. antenna theory and designs (second edition) such as feed or coupling feed; P197-202, People's Telecon Publishing House, 2006).
The feeder line live width of high impedance is very little, and is high to requirement on machining accuracy, adopts the impedance conversion meeting to make the complicated and generation parasitic radiation of feeding network.Change the uniformity that patch shape has been destroyed CURRENT DISTRIBUTION thereby embed feed structure, make the antenna cross-polarization degradation.
The coupling feeding classification has obtained extensive studies, generally adopts the multilayer microstrip structure, through the coupling of the slit on the ground plate of below, perhaps directly adopts the probe coupling.Slit coupling feeding classification usually need be at the antenna back side λ
0/ 4 places increase reflecting plate to avoid the episternites radiation, and the antenna section is very big when frequency is low; Adopt the feeding classification of probe coupling very high, and section is also bigger to accuracy of manufacture requirement.Therefore, above-mentioned antenna form is not suitable for as the tile antennas unit.
Summary of the invention
The objective of the invention is to: provide a kind of T shaped microstrip feed to hang down section dual polarization tile antennas unit design method, this antenna element have feed structure simple, can suppress that low frequency signal disturbs and section is low is easy to integrated characteristics.
In order to design the low section dual polarization tile antennas unit of a kind of T shaped microstrip feed, concrete design of the present invention is following:
According to antenna working frequency range and the medium dielectric constant of selecting for use, confirm the size of bottom microband paste and top layer microband paste.The paster original dimension is about
λ wherein
0Be center frequency points free space wavelength, ε
eBe the dielectric-slab effective dielectric constant.The size of top layer paster is a bit larger tham the size of bottom layer of patches.The dielectric thickness of antenna and dielectric constant can be adjusted according to bandwidth of operation, increase dielectric thickness or adopt low-k can increase the beamwidth of antenna.The feed line impedance of bottom microband paste is elected 50 Ω as, confirms micro belt line width according to resistance value.The size of T shape feeding network 4 (length L 2, width W 2) and with the input impedance value of the spacing d of chip unit decision antenna.The antenna feed microstrip line and with the pad size of shaft connection place need be according to coaxial connector dimensionally-optimised so that feeding network keeps coupling.
The principal character of the design's method has:
Bottom microband paste unit and feeder line are positioned at layer, through T shaped microstrip line coupling feed; Chip unit does not directly contact with feeding network.The microband paste cell configuration is square.
Top layer adds the parasitic patch widening frequency band, and the parasitic patch cell configuration is square.
Two kinds of polarization of antenna element radiation.
The useful technique effect of microstrip antenna of the present invention is embodied in following several aspect:
1, bottom microband paste unit makes chip unit directly not contact with feeding network through T shaped microstrip line coupling feed, has avoided crosstalking of antenna system low frequency, direct current signal; Bottom microband paste unit and feeder line are positioned at layer, and antenna structure is simple; The input impedance at the chip unit distributing point place of coupling feed form is low, has reduced the feeding network difficulty of matching.Top layer adds parasitic patch, has expanded the bandwidth of operation of antenna.
2, antenna feed structure does not destroy the shape of radiation patch, has kept higher polarization purity.
3, entire antenna is that planar structure, section are low, is suitable as the antenna element of tile type array.
4, encourage and be equipped with specific phase difference simultaneously at two kinds of polarization of antenna port, can realize other polarization.
Final design result shows that antenna of the present invention has good frequency bandwidth characteristics, and the working band standing internal wave 20% is less than 1.8, and cross polarization level is lower than-17dB.The antenna sectional area is low.
Description of drawings
Below in conjunction with Figure of description, the present invention is done to describe further through embodiment.
Fig. 1 is the structure perspective view of antenna of the present invention;
Fig. 2 is the structure side view of antenna of the present invention;
Fig. 3 is the feed element of antenna of the present invention;
Fig. 4 is the actual measurement port standing wave curve of embodiment 1;
Fig. 5 is the actual measurement polarization isolation curve of embodiment 1;
Fig. 6 is the measured level polarization E face directional diagram of embodiment 1;
Fig. 7 is the measured level polarization H face directional diagram of embodiment 1;
Fig. 8 is the actual measurement perpendicular polarization E face directional diagram of embodiment 1;
Fig. 9 is the actual measurement perpendicular polarization H face directional diagram of embodiment 1;
Figure 10 is the structural representation of the preferred embodiment of the present invention 2;
Embodiment
Embodiment 1:
Referring to Fig. 1, Fig. 2, a kind of T shaped microstrip feed hangs down section dual polarization tile antennas unit.Entire antenna comprises: top layer parasitic antenna element 1, bottom active antenna unit 2 and support metal plate 7.The top layer parasitic antenna element is a paster antenna, and the dielectric constant of little band plate 5 is 2.55, thickness is 1.524mm; Bottom active antenna unit comprises paster 2 and T shape feeding network 3 two parts, and the dielectric constant of little band plate 6 is 2.55, thickness is 1.524mm.The antenna back is supported with metallic plate 7 conducts.Antenna comprises two kinds of orthogonal polarization radiating elements, for ease of statement it is done level as shown in Figure 1 (H), vertical (V) polarization definition.
Referring to Fig. 3, bottom active antenna unit is through the feed that is coupled with layer T shaped microstrip line, and chip unit and T shape feeding network spacing d are 0.2mm.The microband paste unit is square, is of a size of 6.9mm; The live width W1 of feeder network is that 2mm, live width W2 are 7.1mm.The length L 2 of T shape feeding network part 4 is 0.2mm; Width is that the feed line impedance of W1 is 50 Ω.The square parasitic patch of top layer is of a size of 7.2mm.
Operation principle of the present invention is following:
Bottom layer of patches is an exciting unit, through the feeds that are coupled with layer T shaped microstrip line 4.Every kind of polarisation unit is respectively by the feeding network feed of correspondence.The size of T shape feeding network 4 (length L 2, width W 2) and with the input impedance value of the spacing d of chip unit decision antenna, the size of regulating feeding network 4 matees antenna feed impedance and feeder line 3 impedance phases with spacing d; The slit of chip unit and feeding network is equivalent to parasitic capacitance, has avoided crosstalking of antenna system low frequency, direct current signal.
The bottom aerial radiation further encourages the parasitic patch of top layer, has expanded the bandwidth of operation of antenna.
Performance of the present invention is following:
Fig. 4 is the actual measurement port standing wave curve of antenna embodiment 1 of the present invention, visible at 2GHz frequency band standing internal wave less than 1.8.
Fig. 5 is the actual measurement polarization isolation curve of antenna embodiment 1 of the present invention, and visible the isolation at 2GHz frequency band standing internal wave is higher than 14dB.
Fig. 6,7 is embodiment 1 center of antenna frequency horizontal polarization actual measurement E face, H face directional diagram; Fig. 8,9 is embodiment 1 center of antenna frequency perpendicular polarization actual measurement E face, H face directional diagram.It is thus clear that the antenna cross-polarization level is lower than-17dB.
Embodiment 2:
The preferred embodiments of the present invention 2 are 4 * 8 dual-polarized antenna arrays that are applied to X-band like Figure 10.This aerial array is formed by 32 array element beads footpath periodic arrangement, level to, vertically to unit interval be 15mm.There are level and vertical two kinds of polarization in each unit.This aerial array can improve antenna gain, is equipped with the width of cloth, phase weighting, can realize scan function.
Above content is to combine concrete optimal way to the detailed description that the present invention did, and can not assert that practical implementation of the present invention only limits to these explanations.For person of ordinary skill in the field of the present invention; Under the prerequisite that does not break away from the present invention's design; Can also make some simple deduction or replace; As adopt the T shape feeder line of difform chip unit and different size ratio, all should be regarded as belonging to the invention protection range that the present invention is confirmed by claims of being submitted to.
Claims (4)
1. the low section dual polarization tile antennas unit design method of T shaped microstrip feed comprises: T shaped microstrip feeder line, bottom active antenna unit and the design of top layer parasitic antenna element.It is characterized in that:
A, microstrip feed network are T shape structure;
B, T shape feeding network and chip unit are positioned at layer, and the antenna section is low;
C, antenna element have two cover T shape feeding networks, realize dual polarised radiation.
2. T shaped microstrip feed according to claim 1 hangs down section dual polarization tile antennas unit, and it is characterized in that: feeding network is a T shape structure, and it and chip unit 2 spacings are d; The size of T shape feeding network and paster limit parallel portion feeder line 4 and spacing d are determining the input impedance of antenna element; The impedance and the antenna feed impedance of the feeder line 3 of T shape feeding network and paster limit vertical component are complementary.
3. T shaped microstrip feed according to claim 1 hangs down section dual polarization tile antennas unit, it is characterized in that: chip unit and T shape feeding network are positioned at layer, and the antenna section height is merely dielectric thickness.
4. T shaped microstrip feed according to claim 1 hangs down section dual polarization tile antennas unit, and it is characterized in that: antenna element has two kinds of polarization, every kind of corresponding respectively feeding network separately of polarization.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356618A (en) * | 2016-09-26 | 2017-01-25 | 东南大学 | Micro wave high-frequency-band dual polarization small base station plate antenna |
| CN108023174A (en) * | 2016-10-28 | 2018-05-11 | 三星电机株式会社 | Antenna and the Anneta module for possessing antenna |
| CN109149093A (en) * | 2018-08-03 | 2019-01-04 | 瑞声科技(新加坡)有限公司 | Extensive MIMO array antenna |
| WO2019080547A1 (en) * | 2017-10-26 | 2019-05-02 | 武汉虹信通信技术有限责任公司 | Microstrip radiation unit and antenna for use in 5g system |
| CN109951205A (en) * | 2017-12-20 | 2019-06-28 | 立积电子股份有限公司 | Wireless signal transceiver |
| CN110676576A (en) * | 2019-10-09 | 2020-01-10 | 深圳锐越微技术有限公司 | Dual-polarized microstrip antenna |
| CN110890621A (en) * | 2018-09-10 | 2020-03-17 | 三星电机株式会社 | Chip antenna module |
| US10833745B2 (en) | 2017-12-20 | 2020-11-10 | Richwave Technology Corp. | Wireless signal transceiver device with dual-polarized antenna with at least two feed zones |
| CN112688079A (en) * | 2020-12-21 | 2021-04-20 | 华南理工大学 | Dual-polarized wide beam antenna based on loading bent grounding metal column |
| CN113422203A (en) * | 2021-06-30 | 2021-09-21 | 广东工业大学 | Compact directional diagram diversity same-frequency full-duplex antenna |
| CN113519090A (en) * | 2019-03-14 | 2021-10-19 | 华为技术有限公司 | Feeding method and feeding structure for antenna element |
| CN113964505A (en) * | 2021-09-09 | 2022-01-21 | 华南理工大学 | Coupling feed patch antenna and communication system |
| US11367968B2 (en) | 2017-12-20 | 2022-06-21 | Richwave Technology Corp. | Wireless signal transceiver device with dual-polarized antenna with at least two feed zones |
| US11784672B2 (en) | 2017-12-20 | 2023-10-10 | Richwave Technology Corp. | Wireless signal transceiver device with a dual-polarized antenna with at least two feed zones |
| US11978964B2 (en) | 2019-11-26 | 2024-05-07 | Huawei Technologies Co., Ltd. | Antenna structure, circuit board with antenna structure, and communications device |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356618A (en) * | 2016-09-26 | 2017-01-25 | 东南大学 | Micro wave high-frequency-band dual polarization small base station plate antenna |
| US11482787B2 (en) | 2016-10-28 | 2022-10-25 | Samsung Electro-Mechanics Co., Ltd. | Antenna and antenna module including the antenna |
| US11024972B2 (en) | 2016-10-28 | 2021-06-01 | Samsung Electro-Mechanics Co., Ltd. | Antenna and antenna module including the antenna |
| CN112164877A (en) * | 2016-10-28 | 2021-01-01 | 三星电机株式会社 | Antenna with a shield |
| CN112164877B (en) * | 2016-10-28 | 2023-09-08 | 三星电机株式会社 | Antenna |
| CN108023174A (en) * | 2016-10-28 | 2018-05-11 | 三星电机株式会社 | Antenna and the Anneta module for possessing antenna |
| WO2019080547A1 (en) * | 2017-10-26 | 2019-05-02 | 武汉虹信通信技术有限责任公司 | Microstrip radiation unit and antenna for use in 5g system |
| US11367968B2 (en) | 2017-12-20 | 2022-06-21 | Richwave Technology Corp. | Wireless signal transceiver device with dual-polarized antenna with at least two feed zones |
| CN109951205A (en) * | 2017-12-20 | 2019-06-28 | 立积电子股份有限公司 | Wireless signal transceiver |
| US11784672B2 (en) | 2017-12-20 | 2023-10-10 | Richwave Technology Corp. | Wireless signal transceiver device with a dual-polarized antenna with at least two feed zones |
| US10833745B2 (en) | 2017-12-20 | 2020-11-10 | Richwave Technology Corp. | Wireless signal transceiver device with dual-polarized antenna with at least two feed zones |
| CN109149093A (en) * | 2018-08-03 | 2019-01-04 | 瑞声科技(新加坡)有限公司 | Extensive MIMO array antenna |
| CN110890621A (en) * | 2018-09-10 | 2020-03-17 | 三星电机株式会社 | Chip antenna module |
| CN110890621B (en) * | 2018-09-10 | 2023-08-01 | 三星电机株式会社 | Chip antenna module |
| CN113519090A (en) * | 2019-03-14 | 2021-10-19 | 华为技术有限公司 | Feeding method and feeding structure for antenna element |
| CN110676576A (en) * | 2019-10-09 | 2020-01-10 | 深圳锐越微技术有限公司 | Dual-polarized microstrip antenna |
| US11978964B2 (en) | 2019-11-26 | 2024-05-07 | Huawei Technologies Co., Ltd. | Antenna structure, circuit board with antenna structure, and communications device |
| CN112688079A (en) * | 2020-12-21 | 2021-04-20 | 华南理工大学 | Dual-polarized wide beam antenna based on loading bent grounding metal column |
| CN113422203A (en) * | 2021-06-30 | 2021-09-21 | 广东工业大学 | Compact directional diagram diversity same-frequency full-duplex antenna |
| CN113964505A (en) * | 2021-09-09 | 2022-01-21 | 华南理工大学 | Coupling feed patch antenna and communication system |
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Application publication date: 20120711 |