CN102170048A - Omnidirectional substrate integrated waveguide slot multi-antenna array - Google Patents
Omnidirectional substrate integrated waveguide slot multi-antenna array Download PDFInfo
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- CN102170048A CN102170048A CN2011100754005A CN201110075400A CN102170048A CN 102170048 A CN102170048 A CN 102170048A CN 2011100754005 A CN2011100754005 A CN 2011100754005A CN 201110075400 A CN201110075400 A CN 201110075400A CN 102170048 A CN102170048 A CN 102170048A
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Abstract
The invention relates to an omnidirectional substrate integrated waveguide slot multi-antenna array which comprises multiple omnidirectional substrate integrated waveguide slot antennas which are ranked side by side and integrally manufactured on a medium plate, wherein the space between the two adjacent omnidirectional substrate integrated waveguide slot antennas is at least the width of one single omnidirectional substrate integrated waveguide slot antenna; the omnidirectional substrate integrated waveguide slot antennas are two-sided symmetrical substrate integrated waveguide slot antennas; an upper surface metal layer is arranged on the front surface of the antenna, a lower surface metal layer is arranged on the back surface of the antenna, and a medium substrate (6) is arranged in the middle; metalized through holes (3) are symmetrically formed on the upper surface metal layer and the lower surface metal layer along the periphery of the antenna, thus the metalized through holes (3) enable the upper surface metal layer and the lower surface metal layer to be connected; slots (4) are alternately formed at the two sides of the central axis of the antenna; the metalized through holes (3) are not formed at one end of the central axis of the antenna, and the end is connected with a micro-strip transition line (2); and the other end of the micro-strip transition line (2) is connected with a feeder line (1).
Description
Technical field
The invention belongs to communication technology application, be specifically related to a kind of substrate integration wave-guide aerial array.
Substrate integration wave-guide (Substrate Integrated Waveguide, SIW) slot antenna, when adopting two-sided symmetrical slit, can form the omnidirectional radiation characteristic of E face, a plurality of SIW slot antennas unit is integrated on the same block of dielectric-slab, form multi-antenna array, and keep the individual antenna antenna pattern constant, belong to communication technology application.
Background technology
In recent years, wireless communication technology has obtained fast-developing and has obtained extensive use.Increasing communication system requires low cost, easily makes, is easy to and the integrated antenna of other microwave radio planar circuit.High band, omnidirectional radiation, easy making, antenna easy of integration are one of present research focuses, and multi-antenna technology (multiple-input and multiple-output) also is one of present research focus simultaneously.
Along with frequency improves, common open electric circuit loss is big, parasitic radiation is serious, and common radiating doublet, as doublet unit, the gain of single radiating element is limited, for improving radiation gain, needs a plurality of radiating elements are formed array, but the radiating element number in the same array is many more, and feeding network will be complicated more.
The SIW slot antenna is to crack on the SIW surface metal, forms radiating element, can on a SIW array be formed in a plurality of slits, need not to add extra power distributing circuit, can improve the radiation gain of antenna effectively.SIW is as a kind of enclosed construction circuit, and little, the no parasitic radiation of loss is fit to the high band communication system, makes simply, with low cost simultaneously, has actual using value.
Summary of the invention
Technical problem:The present invention proposes a kind of Ku of being operated in wave band, and loss is little, parasitic radiation is weak, isolate and resist dried
Strong, the omnidirectional's chip integrated waveguide slot multi-antenna array of the ability of disturbing.
Technical scheme:Omnidirectional of the present invention chip integrated waveguide slot multi-antenna array is produced on an omnidirectional's chip integrated waveguide slot antenna on the dielectric-slab and is formed by a plurality of be arranged side by side integrated, and the spacing between the two adjacent omnidirectional chip integrated waveguide slot antennas is at least the width of single omnidirectional chip integrated waveguide slot antenna.Described omnidirectional chip integrated waveguide slot antenna is two-sided symmetrical chip integrated waveguide slot antenna, and the front of this antenna is provided with the upper surface metal level, and the back side is provided with lower surface metal layer, and the centre is a dielectric substrate; Wherein the upper surface metal level is connected with lower surface metal layer at the symmetrical plated-through hole that is provided with of the periphery of upper surface metal level and lower surface metal layer upper edge antenna, both sides, axis at antenna alternately are provided with the slit, end in the axis of antenna is not provided with plated-through hole, be connected with little band transition line at this end, the other end of little band transition line connects feed line.
Described feed line is 50 ohm microstrip.
Because the SIW slot antenna has planar structure, four omnidirectional's SIW slot antennas is integrated, be produced on the same block of dielectric-slab, form SIW slit multi-antenna array, for keeping the E face omnidirectional radiation characteristic of each SIW slot antenna in the multi-antenna array of SIW slit, need reserve certain air distance between the adjacent antenna.The feed line of the single SIW of omnidirectional slot antenna adopts 50 ohm microstrip, adopts little band transition line to carry out impedance matching between 50 ohm microstrip and the SIW.Leave certain air clearance in the multi-antenna array between adjacent antenna, only link to each other at microstrip line part dielectric-slab;
Beneficial effect:At the Ku wave band, SIW circuit loss is little, parasitic radiation is extremely low, the SIW slot antenna is the planar structure antenna, be easy to and the coplane of other microwave radio circuit, integrated, simultaneously the SIW slot antenna simple in structure, be easy to adopt Standard PC B(printed circuit board (PCB)) processes.The present invention is integrated with a plurality of SIW slot antennas, be produced on the dielectric-slab, forms SIW slit multi-antenna array.
(1) the Ku wave band gap radiation aerial loss based on the SIW art designs is little, a little less than the parasitic radiation; Array is formed in SIW gap radiation unit need not to add other power distributing networks, simplified design procedure, convenient making, reduced loss.
(2) in the present invention, four omnidirectional's SIW slot antennas are integrated, be produced on the dielectric-slab, have formed a SIW slit multi-antenna array, have guaranteed the consistency of each antenna in the multiaerial system of SIW slit; Owing between adjacent antenna, reserve the airspace, kept the omnidirectional radiation characteristic of individual antenna in the multi-antenna array of SIW slit.
(3) the present invention is simple in structure, makes and all utilizes ripe Standard PC B technology, and cost is low, produce in batches easily,
(4) feeding network of the present invention is an enclosed construction, thereby radiation is little, isolate and antijamming capability strong, easy and other plane microwave radio circuit is integrated.
Description of drawings
Fig. 1 is the plane graph of the SIW of omnidirectional slot antenna multi-antenna array of the present invention;
Fig. 2 is the single SIW of omnidirectional slot antenna upper surface metal layer plane figure;
Fig. 3 is the single SIW of omnidirectional slot antenna lower surface metal layer plane graph;
The emulation and the test result of Fig. 4 embodiment antenna input reflection coefficient, test result is coupled between the adjacent and non-adjacent antenna of embodiment multi-antenna array;
The antenna pattern test result of individual antenna among Fig. 5 embodiment;
The antenna pattern test result of individual antenna in the multi-antenna array among Fig. 6 embodiment.
Feed line 1, little band transition line 2, plated-through hole 3, slit 4, SIW transmission line 5, dielectric substrate 6 are arranged among the figure.
Embodiment
The single SIW of omnidirectional slot antenna adopts symmetrical slit, the upper and lower surface of SIW as radiating element.The upper and lower surperficial symmetry of SIW is cracked, and forms pair of slits, and every pair of relative SIW center line in slit has identical deviation post, realizes the E face omnidirectional radiation characteristic of antenna; The single SIW of omnidirectional slot antenna adopts eight pairs of SIW slits to form radiating curtain, and to improve the radiation gain of antenna, length, the width in every pair of slit are identical, as shown in Figures 2 and 3.
4 omnidirectional's SIW slot antennas are integrated into a multi-antenna array, are produced on the dielectric-slab, as shown in Figure 1, in order to keep the omnidirectional radiation characteristic of individual antenna in the multi-antenna array, slot milling spacing between the adjacent antenna.
Embodiment 1: Fig. 2 has provided the single SIW of omnidirectional slot antenna upper surface metal structure schematic diagram, and Fig. 3 has provided the single SIW of omnidirectional slot antenna lower surface metal structure schematic diagram.Substrate integration wave-guide is to be made of two row's plated-through holes 3, connects by little band transition line 2 between 50 ohm microstrip feed lines 1 and the SIW transmission line 5; Slit 4 all is carved with on the upper and lower surface of substrate integration wave-guide, and the slit on upper and lower surface is symmetrical distribution, totally eight pairs; There is same offset in each slit with respect to the center line of SIW, and the length and width in each slit is all identical.Fig. 3 has provided the structure chart of omnidirectional's SIW slit multi-antenna array, for the antenna pattern that keeps individual antenna is constant, reserves the airspace between adjacent antenna.
The example antenna of making is operated near the 14.4GHz, and the single SIW of omnidirectional slot antenna width is 20mm among the figure; Microstrip-fed line width is 1.38mm; The broadside width of little band transition line is 3mm; The vertical length of little band transition line is 2.5mm; The diameter of plated-through hole 3 is 0.6mm; The two through hole spacing is 1mm on same row's plated-through hole; SIW transmission line inlet and nearest slit are 5.85mm near the end spacing; Adjacent two slits near the end vertical interval are)=1.95mm; Terminal metal through hole and nearest slit near end distance from being 0.95mm; Slit and the SIW of omnidirectional slot antenna distance between center line are 0.1mm; Gap width is 0.1mm; Gap length is=7.75mm; Two row's plated-through hole distances between center line are 9.2mm.It is that the dielectric constant of 0.5mm is 2.65 Taconic(Tai Kangnike that example medium substrate has adopted thickness) as dielectric-slab.The example antenna is made on above-mentioned substrate by size illustrated in figures 1 and 2.Fig. 4 is the emulation and the test result of embodiment antenna input reflection coefficient, the test result that is coupled between the adjacent and non-adjacent antenna of embodiment multi-antenna array, (this shows that be integrated in the multiaerial system on the dielectric-slab, the degree of coupling is good between antenna).
Fig. 5 is that individual antenna is in the antenna pattern test result of 14.4GHz among the embodiment, and individual antenna has good omnidirectional radiation characteristic.
Fig. 6 be among the embodiment in the multi-antenna array individual antenna be integrated in the multiaerial system on the dielectric-slab in the antenna pattern test result of 14.4GHz, individual antenna has kept the omnidirectional radiation characteristic.
Claims (3)
1. omnidirectional's chip integrated waveguide slot multi-antenna array, it is characterized in that this aerial array is produced on an omnidirectional's chip integrated waveguide slot antenna on the dielectric-slab and is formed by a plurality of be arranged side by side integrated, the spacing between the two adjacent omnidirectional chip integrated waveguide slot antennas is at least the width of single omnidirectional chip integrated waveguide slot antenna.
2. omnidirectional according to claim 1 chip integrated waveguide slot multi-antenna array, it is characterized in that, described omnidirectional chip integrated waveguide slot antenna is two-sided symmetrical chip integrated waveguide slot antenna, the front of this antenna is provided with the upper surface metal level, the back side is provided with lower surface metal layer, and the centre is dielectric substrate (6); Wherein the upper surface metal level is connected with lower surface metal layer at the symmetrical plated-through hole (3) that is provided with of the periphery of upper surface metal level and lower surface metal layer upper edge antenna, alternately be provided with slit (4) in the both sides, axis of antenna, end in the axis of antenna is not provided with plated-through hole (3), be connected with little band transition line (2) at this end, the other end of little band transition line (2) connects feed line (1).
3. omnidirectional according to claim 2 chip integrated waveguide slot multi-antenna array is characterized in that described feed line (1) is 50 ohm microstrip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100754005A CN102170048A (en) | 2011-03-28 | 2011-03-28 | Omnidirectional substrate integrated waveguide slot multi-antenna array |
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| CN2011100754005A CN102170048A (en) | 2011-03-28 | 2011-03-28 | Omnidirectional substrate integrated waveguide slot multi-antenna array |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218302A (en) * | 2014-09-12 | 2014-12-17 | 四川泰立科技有限公司 | 360-degree all-directional broadband transmitting antenna for 10-GHz-12GHz white frequency spectrum |
| CN107144822A (en) * | 2017-06-29 | 2017-09-08 | 成都瑞达物联科技有限公司 | Millimetre-wave radar integrated radio-frequency front end |
| CN109286082A (en) * | 2018-09-17 | 2019-01-29 | 东南大学 | A kind of cross-polarized antenna array of improvement phase-array scanning |
| CN111264002A (en) * | 2017-08-25 | 2020-06-09 | Lg电子株式会社 | Slot antenna and slot array antenna |
| CN111916910A (en) * | 2020-09-03 | 2020-11-10 | 上海无线电设备研究所 | Substrate integrated waveguide slot antenna |
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| CN201156581Y (en) * | 2008-02-27 | 2008-11-26 | 东南大学 | Oblique slot array 45 DEG linear polarization antenna with substrate integrated waveguide |
| US20090066597A1 (en) * | 2007-09-07 | 2009-03-12 | Songnan Yang | Substrate Integrated Waveguide Antenna Array |
| CN201956465U (en) * | 2011-03-28 | 2011-08-31 | 东南大学 | Omnibearing substrate integrated waveguide seam multi-antenna array |
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2011
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| US20090066597A1 (en) * | 2007-09-07 | 2009-03-12 | Songnan Yang | Substrate Integrated Waveguide Antenna Array |
| CN201156581Y (en) * | 2008-02-27 | 2008-11-26 | 东南大学 | Oblique slot array 45 DEG linear polarization antenna with substrate integrated waveguide |
| CN201956465U (en) * | 2011-03-28 | 2011-08-31 | 东南大学 | Omnibearing substrate integrated waveguide seam multi-antenna array |
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| LI YAN ET AL.: "Simulation and Experiment on SIW Slot Array Antennas", 《IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS》 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218302A (en) * | 2014-09-12 | 2014-12-17 | 四川泰立科技有限公司 | 360-degree all-directional broadband transmitting antenna for 10-GHz-12GHz white frequency spectrum |
| CN107144822A (en) * | 2017-06-29 | 2017-09-08 | 成都瑞达物联科技有限公司 | Millimetre-wave radar integrated radio-frequency front end |
| CN111264002A (en) * | 2017-08-25 | 2020-06-09 | Lg电子株式会社 | Slot antenna and slot array antenna |
| CN111264002B (en) * | 2017-08-25 | 2023-06-23 | Lg电子株式会社 | Slot antenna and slot array antenna |
| CN109286082A (en) * | 2018-09-17 | 2019-01-29 | 东南大学 | A kind of cross-polarized antenna array of improvement phase-array scanning |
| CN111916910A (en) * | 2020-09-03 | 2020-11-10 | 上海无线电设备研究所 | Substrate integrated waveguide slot antenna |
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Application publication date: 20110831 |