CN105428818A - Dual-polarized bandwidth slot antenna applying U-shaped microstrip feed - Google Patents
Dual-polarized bandwidth slot antenna applying U-shaped microstrip feed Download PDFInfo
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- CN105428818A CN105428818A CN201510967376.4A CN201510967376A CN105428818A CN 105428818 A CN105428818 A CN 105428818A CN 201510967376 A CN201510967376 A CN 201510967376A CN 105428818 A CN105428818 A CN 105428818A
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- slot antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Abstract
The invention discloses a dual-polarized bandwidth slot antenna applying a U-shaped microstrip feed. The dual-polarized bandwidth slot antenna comprises a dielectric substrate, a reflection floor, a first coaxial line, a second coaxial line, a first support post and a second support post, wherein the reflection floor is arranged below the dielectric substrate, the first coaxial line, the second coaxial line, the first support post and the second support post are arranged between the dielectric substrate and the reflection floor, the lower layer of the dielectric substrate is provided with a metal floor, and a first slot and a second slot are arranged on the metal floor and vertically cross to form a cross-shaped slot antenna used for completing transmission or receiving of an antenna signal; the upper layer of the dielectric substrate is provided with a first feed microstrip line and a second feed microstrip line; the first coaxial line and the second coaxial line comprise inner conductors and outer conductors; and the antenna signal passes through a via hole on the reflection floor from the inner conductors at the bottom ends of the first coaxial line and the second coaxial line and is accessed in or accessed out through an SMA head. By the dual-polarized slot antenna, the impedance bandwidth is increased to 70%; moreover, the radiation pattern of the antenna is maintained stable; and the dual-polarized slot antenna is simple in structure, is easy to process and has favorable application prospect in the field of wireless communication.
Description
Technical field
The present invention relates to broadband, dual-polarized slot antenna technology field, particularly a kind ofly adopt U-shaped microstrip-fed dual polarization broadband slot antenna.
Background technology
Antenna is used in wireless device launching and accepting electromagnetic equipment, and every electromagnetic wave that utilizes carrys out transmission of information, all relies on antenna to carry out work.Along with the development of the communication technology, the amount of information transmitted in radio communication gets more and more, and broadband, intellectuality, low cost are the developing direction of future antenna.Dual polarized antenna has in modern radar and wireless communication system to be applied very widely.The signal combination of two polarised directions is got up and to anti-multipath fading, the stability of system and the capacity of channel can be improved.There is various broadband dual polarized antenna at present, but complicated structure.
2005, the people such as Steven (Shichang) Gao deliver in the article being entitled as " Dual-polarizedbroad-bandmicrostripantennasfedbyproximity coupling " on IEEETRANSACTIONSONANTENNASANDPROPAGATION, author proposes a kind of double polarized micro strip antenna close to aperture-coupled, fractional bandwidth is that the isolation of 22%, two ports is below-34dB.
2004, the people such as HangWong delivered and propose a kind of dual polarization in the article being entitled as " Designofdual-polarizedL-probepatchantennaarrayswithhighi solation " and have high-isolation dual polarization antenna array on IEEETRANSACTIONSONANTENNASANDPROPAGATION.This antenna adopts L-type probe feed, and fractional bandwidth is 23.8%.
2015, the people such as YanWang delivered in the article being entitled as " Dual-PolarizedSlot-CoupledMicrostripAntennaArrayWithStab leActiveElementPattern " and propose a kind of dual polarization slot-coupled micro-strip antenna array on IEEETRANSACTIONSONANTENNASANDPROPAGATION.This antenna is less than 2 at the scope standing internal wave of 1.69GHz-2.21GHz.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art and deficiency, there is provided a kind of and adopt U-shaped microstrip-fed dual polarization broadband slot antenna, this antenna is broadband, dual-polarized slot antenna, feed form is symmetrical microstrip coupled feed, this antenna applications is in the communications band of 1200MHz-2600MHz, in the antenna for base station field of modern radar and radio communication, there is potential using value, this antenna adopts pcb board to process, and has more simple structure compared with conventional dual polarized antenna.
Object of the present invention is achieved through the following technical solutions:
A kind ofly adopt U-shaped microstrip-fed dual polarization broadband slot antenna, comprise medium substrate 1, be positioned at the reflection floor 2 below medium substrate, and the first coaxial line 3a between medium substrate 1 and reflection floor 2, second coaxial line 3b, first support column 3c and the second support column 3d, the lower floor of described medium substrate 1 is metal floor 1a, described metal floor 1a is provided with the first gap 4a and the second gap 4b, wherein, described first gap 4a and described second gap 4b square crossing form criss-cross slot antenna 4, for completing transmitting or the reception of aerial signal,
The upper strata of described medium substrate 1 is provided with the first feeding microstrip line 5a and the second feeding microstrip line 5b;
Described first coaxial line 3a and described second coaxial line 3b comprises inner wire and outer conductor;
The position that described reflection floor 2 is connected with described first coaxial line 3a and described second coaxial line 3b offers the first via hole 2a and the second via hole 2b, and the bottom inner wire of described first coaxial line 3a and described second coaxial line 3b passes described reflection floor 2 by described first via hole 2a and the second via hole 2b;
The position that described medium substrate 1 is connected with described first coaxial line 3a and described second coaxial line 3b offers the first through hole 7a and the second through hole 7b,
The inner wire of described first coaxial line 3a is connected with the first feeding microstrip line 5a on described medium substrate 1 upper strata through after described first through hole 7a, the inner wire of described second coaxial line 3b is connected with the described second feeding microstrip line 5b on described medium substrate 1 upper strata through after described second through hole 7b, aerial signal, from the inner wire of described first coaxial line 3a and described second coaxial line 3b bottom, is accessed by SMA head or is picked out.
Further, described first feeding microstrip line 5a and the second feeding microstrip line 5b is symmetrical arranged respectively centered by described first gap 4a and described second gap 4b.
Further, described first feeding microstrip line 5a and described second feeding microstrip line 5b is U-shaped, described first through hole 7a is positioned at the U-shaped bottom center of described first feeding microstrip line 5a, described second through hole 7b be positioned at described second feeding microstrip line 5b U-shaped bottom center.
Further, described medium substrate 1 is pcb board, and described reflection floor 2 is simple metal conductor, and described first support column 3c and the second support column 3d is simple metal conductor.
Further, described first coaxial line 3a and the outer conductor of described second coaxial line 3b are for being connected the lower metal floor 1a of described medium substrate 1 and described reflection floor 2.
Further, described first coaxial line 3a, described second coaxial line 3b, described first support column 3c and described second support column 3d are parallel to each other, described medium substrate 1 and described reflection floor 2 are parallel to each other, and described first coaxial line 3a, described second coaxial line 3b, described first support column 3c are mutually vertical with described reflection floor 2 with described medium substrate 1 with described second support column 3d.
Further, on described medium substrate 1, described first feeding microstrip line 5a and described second feeding microstrip line 5b crossover location place are provided with the first metallic vias 6a, and a wherein feeding microstrip line is passed from the lower floor of described medium substrate 1.
Further, described medium substrate 1 is respectively arranged with the second metallic vias 6b, the 3rd metallic vias 6c, the 4th metallic vias 6d and corresponding cross-line with three positions of described first metallic vias 6a horizontal symmetrical, vertical symmetry and diagonal symmetry.
The present invention has following advantage and effect relative to prior art:
1) a kind of U-shaped microstrip-fed dual polarization slot antenna of the present invention's proposition, have the features such as broadband, structure simply, are easily processed, cost is low, the design for communication antenna provides a kind of new thinking.
2) a kind of U-shaped microstrip-fed dual polarization slot antenna of the present invention's proposition, in guarantee isolation, directional diagram situation of good performance, the impedance bandwidth of further expansion antenna, impedance bandwidth is brought up to 70%, and the antenna pattern of antenna keeps stable, has good application prospect at wireless communication field.
Accompanying drawing explanation
Fig. 1 (a) is a kind of three-dimensional structure diagram adopting U-shaped microstrip-fed dual polarization broadband slot antenna that embodiment proposes;
Fig. 1 (b) is a kind of another three-dimensional structure diagram adopting U-shaped microstrip-fed dual polarization broadband slot antenna that embodiment proposes;
Fig. 2 (a) be embodiment propose a kind of adopt U-shaped microstrip-fed dual polarization broadband slot antenna be separated after three-dimensional structure diagram;
Fig. 2 (b) be embodiment propose a kind of adopt U-shaped microstrip-fed dual polarization broadband slot antenna be separated after another three-dimensional structure diagram;
Fig. 3 is the vertical view of embodiment medium substrate;
Fig. 4 is the upward view of embodiment medium substrate;
Fig. 5 is the three-dimensional structure diagram of four support columns in embodiment;
Fig. 6 is the three-dimensional structure diagram reflecting floor in embodiment;
1---medium substrate, 1a---metal floor, 2---reflects floor, 2a---first via hole, 2b---second via hole, 3a---first coaxial line, 3b---second coaxial line, 3c---metal column, 3d---metal column, 4a---first gap, 4b---second gap, 4---slot antenna, 5a---first feeding microstrip line, 5b---second feeding microstrip line, 6a---first metallic vias, 6b---second metallic vias, 6c---the 3rd metallic vias, 6d---the 4th metallic vias, 7a---first through hole, 7b---second through hole.
Embodiment
For making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment
Present embodiment discloses a kind of broadband, dual-polarized slot antenna, feed form is symmetrical microstrip coupled feed.This antenna applications, in the communications band of 1200MHz-2600MHz, has potential using value in the antenna for base station field of modern radar and radio communication.Antenna adopts pcb board to process, and has more simple structure compared with conventional dual polarized antenna.
As shown in Figures 1 to 6, U-shaped microstrip-fed dual polarization broadband slot antenna is adopted in the present embodiment, comprise medium substrate 1, the reflection floor 2 below medium substrate and four support columns 3a, 3b, 3c, 3d between medium substrate 1 and reflection floor 2, above-mentioned four support columns 3a, 3b, 3c, 3d are parallel to each other, wherein two support columns 3a, 3b are the first coaxial line for feed and the second coaxial line, have inner wire and outer conductor.Other two support columns 3c, 3d are the first metal column and second metal column of uniconductor.Externally, four support columns are cylinders, and diameter is all the same.
Wherein, medium substrate 1 is one piece of pcb board, the lower floor of medium substrate 1 is metal floor 1a, metal floor 1a opens the first gap 4a and the second gap 4b, wherein, first gap 4a and the second gap 4b square crossing form criss-cross gap as slot antenna 4, and the upper strata of medium substrate 1 is with the first gap 4a first feeding microstrip line 5a that is symmetrical centre and the second feeding microstrip line 5b that is symmetrical centre with the second gap 4b.Wherein, the first feeding microstrip line 5a and the second feeding microstrip line 5b is U-shaped.Because the feeding microstrip line between two ports has intersection, so beaten the first metallic vias 6a in the place intersected, a wherein feeding microstrip line is passed from the lower floor of medium substrate 1, avoided intersecting.The place intersected only has a place, but in order to ensure the symmetry of antenna structure, the second metallic vias 6b is all provided with in three positions of the metal floor 1a with this place first metallic vias 6a horizontal symmetrical, vertical symmetry and diagonal symmetry, 3rd metallic vias 6c, the 4th metallic vias 6d and corresponding cross-line.
Wherein, four support columns 3a, 3b, 3c, 3d connect slot antenna 4 and reflection floor 2.Wherein, medium substrate 1 offers the first through hole 7a and the second through hole 7b, described first through hole 7a is positioned at the U-shaped bottom center of the first feeding microstrip line 5a, and described second through hole 7b is positioned at the U-shaped bottom center of the second feeding microstrip line 5b.Wherein, the inner wire of the first coaxial line 3a is connected with the first feeding microstrip line 5a on medium substrate 1 upper strata through after the first through hole 7a, and the inner wire of the second coaxial line 3b is connected with the second feeding microstrip line 5b on medium substrate 1 upper strata through after the second through hole 7b.
Wherein, reflection floor 2 is simple metal conductors.The first via hole 2a and the second via hole 2b has been opened, for connecting the input interface of feed in the position that reflection floor 2 is connected with the first coaxial line 3a and the second coaxial line 3b.
Wherein, the outer conductor of the first coaxial line 3a and the outer conductor of the second coaxial line 3b are used for lower metal floor 1a and the reflection floor 2 of connecting media substrate 1.
The first gap 4a that described metal floor 1a opens and the second gap 4b square crossing form criss-cross gap as slot antenna 4, complete transmitting or the reception of aerial signal; Signal, from the inner wire of the first coaxial line 3a and the second coaxial line 3b bottom, is accessed by SMA head or is picked out.
In above-described embodiment, described pcb board adopts any one material of FR-4, polyimides, polytetrafluoroethylglass glass cloth and common burning porcelain to form; The metal that the interior and outer conductor of described metal floor 1a, the first coaxial line 3a and the second coaxial line 3b, support column 3c, 3d adopt is any one of aluminium, iron, tin, copper, silver, gold and platinum, or is any one alloy of aluminium, iron, tin, copper, silver, gold and platinum.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1. one kind adopts U-shaped microstrip-fed dual polarization broadband slot antenna, comprise medium substrate (1), be positioned at the reflection floor (2) below medium substrate, and the first coaxial line (3a) be positioned between medium substrate (1) and reflection floor (2), second coaxial line (3b), first support column (3c) and the second support column (3d), it is characterized in that, the lower floor of described medium substrate (1) is metal floor (1a), described metal floor (1a) is provided with the first gap (4a) and the second gap (4b), wherein, described first gap (4a) and described second gap (4b) square crossing form criss-cross slot antenna (4), for completing transmitting or the reception of aerial signal,
The upper strata of described medium substrate (1) is provided with the first feeding microstrip line (5a) and the second feeding microstrip line (5b);
Described first coaxial line (3a) and described second coaxial line (3b) comprise inner wire and outer conductor;
The position that described reflection floor (2) is connected with described first coaxial line (3a) and described second coaxial line (3b) offers the first via hole (2a) and the second via hole (2b), the bottom inner wire of described first coaxial line (3a) and described second coaxial line (3b) by described first via hole (2a) and the second via hole (2b) through described reflection floor (2);
The position that described medium substrate (1) is connected with described first coaxial line (3a) and described second coaxial line (3b) offers the first through hole (7a) and the second through hole (7b),
The inner wire of described first coaxial line (3a) is connected with first feeding microstrip line (5a) on described medium substrate (1) upper strata afterwards through described first through hole (7a), the inner wire of described second coaxial line (3b) is connected with described second feeding microstrip line (5b) on described medium substrate (1) upper strata afterwards through described second through hole (7b), aerial signal, from the inner wire of described first coaxial line (3a) and described second coaxial line (3b) bottom, is accessed by SMA head or is picked out.
2. according to claim 1ly a kind ofly adopt U-shaped microstrip-fed dual polarization broadband slot antenna, it is characterized in that,
Described first feeding microstrip line (5a) and the second feeding microstrip line (5b) are symmetrical arranged respectively centered by described first gap (4a) and described second gap (4b).
3. according to claim 2ly a kind ofly adopt U-shaped microstrip-fed dual polarization broadband slot antenna, it is characterized in that,
Described first feeding microstrip line (5a) and described second feeding microstrip line (5b) are in U-shaped, described first through hole (7a) is positioned at the U-shaped bottom center of described first feeding microstrip line (5a), described second through hole (7b) be positioned at described second feeding microstrip line (5b) U-shaped bottom center.
4. according to claim 1ly a kind ofly adopt U-shaped microstrip-fed dual polarization broadband slot antenna, it is characterized in that,
Described medium substrate (1) is pcb board, and described reflection floor (2) is simple metal conductor, and described first support column (3c) and the second support column (3d) are simple metal conductor.
5. according to claim 1ly a kind ofly adopt U-shaped microstrip-fed dual polarization broadband slot antenna, it is characterized in that,
The outer conductor of described first coaxial line (3a) and described second coaxial line (3b) is for being connected lower metal floor (1a) and the described reflection floor (2) of described medium substrate (1).
6. according to claim 1ly a kind ofly adopt U-shaped microstrip-fed dual polarization broadband slot antenna, it is characterized in that,
Described first coaxial line (3a), described second coaxial line (3b), described first support column (3c) and described second support column (3d) are parallel to each other, described medium substrate (1) and described reflection floor (2) are parallel to each other, and described first coaxial line (3a), described second coaxial line (3b), described first support column (3c) are mutually vertical with described reflection floor (2) with described medium substrate (1) with described second support column (3d).
7. according to claim 3ly a kind ofly adopt U-shaped microstrip-fed dual polarization broadband slot antenna, it is characterized in that,
Upper described first feeding microstrip line (5a) of described medium substrate (1) and described second feeding microstrip line (5b) crossover location place are provided with the first metallic vias (6a), and a wherein feeding microstrip line is passed from the lower floor of described medium substrate (1).
8. according to claim 7ly a kind ofly adopt U-shaped microstrip-fed dual polarization broadband slot antenna, it is characterized in that,
Described medium substrate (1) is upper is respectively arranged with the second metallic vias (6b), the 3rd metallic vias (6c), the 4th metallic vias (6d) and corresponding cross-line with three positions of described first metallic vias (6a) horizontal symmetrical, vertical symmetry and diagonal symmetry.
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| CN201510967376.4A CN105428818A (en) | 2015-12-18 | 2015-12-18 | Dual-polarized bandwidth slot antenna applying U-shaped microstrip feed |
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| CN201510967376.4A CN105428818A (en) | 2015-12-18 | 2015-12-18 | Dual-polarized bandwidth slot antenna applying U-shaped microstrip feed |
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Cited By (8)
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| CN106229667A (en) * | 2016-09-12 | 2016-12-14 | 华南理工大学 | A kind of Embedded Broad-band dual polarized antenna |
| CN106785404A (en) * | 2017-01-10 | 2017-05-31 | 华南理工大学 | A kind of novel embedded broadband dual polarized antenna |
| CN110086000A (en) * | 2019-05-15 | 2019-08-02 | 南京理工大学 | A kind of wide bandwidth scan angle phased array antenna |
| CN110148832A (en) * | 2019-05-06 | 2019-08-20 | 南京邮电大学 | A kind of implantable antenna system |
| CN111129735A (en) * | 2019-12-31 | 2020-05-08 | 京信通信技术(广州)有限公司 | Broadband radiation unit and array antenna |
| CN113314857A (en) * | 2021-06-04 | 2021-08-27 | 北京航空航天大学 | Broadband dual-polarization slot antenna array |
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| CN114122682A (en) * | 2020-08-25 | 2022-03-01 | 华为技术有限公司 | Antenna unit, antenna array and electronic equipment |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106229667A (en) * | 2016-09-12 | 2016-12-14 | 华南理工大学 | A kind of Embedded Broad-band dual polarized antenna |
| CN106229667B (en) * | 2016-09-12 | 2023-01-06 | 华南理工大学 | Embedded broadband dual-polarized antenna |
| CN106785404A (en) * | 2017-01-10 | 2017-05-31 | 华南理工大学 | A kind of novel embedded broadband dual polarized antenna |
| CN106785404B (en) * | 2017-01-10 | 2023-08-22 | 华南理工大学 | Novel embedded broadband dual polarized antenna |
| CN110148832A (en) * | 2019-05-06 | 2019-08-20 | 南京邮电大学 | A kind of implantable antenna system |
| CN110086000A (en) * | 2019-05-15 | 2019-08-02 | 南京理工大学 | A kind of wide bandwidth scan angle phased array antenna |
| CN111129735B (en) * | 2019-12-31 | 2022-09-27 | 京信通信技术(广州)有限公司 | Broadband radiation unit and array antenna |
| CN111129735A (en) * | 2019-12-31 | 2020-05-08 | 京信通信技术(广州)有限公司 | Broadband radiation unit and array antenna |
| CN113972497A (en) * | 2020-07-22 | 2022-01-25 | 华为技术有限公司 | Electronic equipment |
| WO2022017220A1 (en) * | 2020-07-22 | 2022-01-27 | 华为技术有限公司 | Electronic device |
| CN113972497B (en) * | 2020-07-22 | 2023-02-10 | 华为技术有限公司 | Electronic device |
| CN114122682A (en) * | 2020-08-25 | 2022-03-01 | 华为技术有限公司 | Antenna unit, antenna array and electronic equipment |
| CN113314857B (en) * | 2021-06-04 | 2022-07-01 | 北京航空航天大学 | Broadband dual-polarization slot antenna array |
| CN113314857A (en) * | 2021-06-04 | 2021-08-27 | 北京航空航天大学 | Broadband dual-polarization slot antenna array |
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Application publication date: 20160323 |