CN109888484B - High-efficiency end-fire antenna based on SSPPs structure - Google Patents
High-efficiency end-fire antenna based on SSPPs structure Download PDFInfo
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- CN109888484B CN109888484B CN201910092382.8A CN201910092382A CN109888484B CN 109888484 B CN109888484 B CN 109888484B CN 201910092382 A CN201910092382 A CN 201910092382A CN 109888484 B CN109888484 B CN 109888484B
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Abstract
The invention provides a high-efficiency end-fire antenna based on an SSPPs structure, which comprises: the device comprises a dielectric plate (8), a microstrip transmission line (5), an SSPPs structure (2) and an SMA joint (1); the SSPPs structure (2) is arranged on the top surface of the dielectric plate (8); the microstrip transmission line (5) is arranged on the bottom surface of the dielectric plate (8); the SMA connector (1) is arranged at the center of one short side of the dielectric plate (8). The main body of the invention is a low-profile patch antenna, which has simple structure and easy processing; the invention has wide frequency band, high efficiency and good antenna directivity. The antenna of the invention adopts the SSPPs structure, which can reduce the coupling between the antennas and reduce the volume of the whole system.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a high-efficiency end-fire antenna based on an SSPPs structure.
Background
The importance of antennas in social life is increasing. On the one hand, the gain and the efficiency of the antenna are improved, the communication quality can be improved, and energy can be saved. On the other hand, broadband portable antennas with high directivity have been in wide demand in both the fields of detection and wireless communication. In addition, with the development of technology, multiple antennas need to be arranged in a narrow space in many scenes, and the coupling between the antennas also becomes a problem to be solved urgently by researchers.
In recent years, several types of endfire antennas have been designed by using the advantages of high efficiency, low profile, high gain and small adjacent-to-adjacent coupling when the SSPPs structure is used as a radiation structure in the prior art. An article "enhanced radiations of surface patches", published by IEEE Antennas and WirelessPropagation Letters, y.yin et al 2017, proposes an SSPPs-based Endfire antenna which, although having good directivity and gain, operates at a single frequency point. An article, "Low-profile shunt surface patches tracking-wave antenna for end radiation", published in 2018 by kandwal et al, provides a novel SSPPs-based end-fire antenna, which realizes an end-fire bandwidth of 7.5-8.5GHz, but has a relatively high side lobe ratio and a bandwidth of only 12.5%. Therefore, at present, there is no end-fire antenna that can simultaneously realize broadband, high efficiency, low profile, high gain and small adjacent-to-adjacent coupling.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a high-efficiency end-fire antenna based on an SSPPs structure.
The invention provides a high-efficiency end-fire antenna based on an SSPPs structure, which comprises: the device comprises a dielectric plate, a microstrip transmission line, an SSPPs structure and an SMA joint;
the SSPPs structure is arranged on the top surface of the dielectric slab;
the microstrip transmission line is arranged on the bottom surface of the dielectric slab;
the SMA connector is disposed at the center of one side of the short side of the dielectric plate.
Preferably, the method further comprises the following steps: a non-etched region;
the SMA connector, the non-etching area and the SSPPs structure are connected in sequence.
Preferably, the SSPPs structure is symmetrical about a slit, one end of which is connected to the circular cavity through the non-etched region, and the other end of which is connected to a triangular opening.
Preferably, the SSPPs structure is a symmetrical saw-tooth structure;
the length of the serrations of the SSPPs structure decreases in a direction away from the length of the SMA joint.
Preferably, the microstrip transmission line is arc-shaped, one end of the microstrip transmission line is connected with the SMA connector, and the width of the microstrip transmission line is gradually narrowed along the direction far away from the SMA connector.
Preferably, the other end of the microstrip transmission line is connected to the vertex of the sector patch.
Preferably, the length of the serrations of the SSPPs structure becomes progressively shorter in a direction away from the SMA joint.
Preferably, the SSPPs structure and the microstrip transmission line are etched on the dielectric plate by an etching method.
Preferably, the dielectric plate adopts a single-layer plate structure, and the dielectric plate adopts an ARLONG AD250 dielectric plate with a dielectric constant of 2.5.
Preferably, the microstrip transmission line feeds a slot;
the SMA connector realizes power feeding.
Compared with the prior art, the invention has the following beneficial effects:
1. the main body of the invention is a low-profile patch antenna, which has simple structure and easy processing; the invention has wide frequency band, high efficiency and good antenna directivity.
2. The antenna of the invention adopts the SSPPs structure, which can reduce the coupling between the antennas and reduce the volume of the whole system.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic top view of a high-efficiency end-fire antenna based on an SSPP structure according to the present invention;
fig. 2 is a schematic back structural diagram of a high-efficiency end-fire antenna based on an SSPP structure according to the present invention;
fig. 3 is a return loss diagram of the high-efficiency end-fire antenna based on the SSPP structure according to the present invention;
FIG. 4 is a schematic diagram of the radiation direction corresponding to the frequency of 2GHz according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of the radiation direction corresponding to the frequency of 2.7GHz according to the embodiment of the present invention;
FIG. 6 is a schematic diagram of the radiation direction corresponding to the frequency of 3.4GHz according to the embodiment of the present invention;
fig. 7 is a schematic view of a radiation efficiency curve of an embodiment of the present invention.
The figures show that:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides a high-efficiency end-fire antenna based on an SSPPs structure, which comprises: the device comprises a dielectric plate 8, a microstrip transmission line 5, an SSPPs structure 2 and an SMA joint 1;
the SSPPs structure 2 is arranged on the top surface of the dielectric plate 8;
the microstrip transmission line 5 is arranged on the bottom surface of the dielectric plate 8;
the SMA joint 1 is provided at the center of the short side of the dielectric plate 8.
Specifically, the method further comprises the following steps: a non-etched region 6;
the SMA connector 1, the non-etching area 6 and the SSPPs structure 2 are connected in sequence.
In particular, the SSPPs structure 2 is symmetrical with respect to the slot 3, one end of the slot 3 is connected to the circular cavity 4 through the non-etched region 6, and the other end of the slot 3 is connected to a triangular opening.
Specifically, the SSPPs structure 2 is a symmetrical sawtooth structure;
the length of the serrations of the SSPPs structure 2 decreases in a direction away from the length of the SMA joint 1.
Specifically, the microstrip transmission line 5 is arc-shaped, one end of the microstrip transmission line 5 is connected with the SMA joint 1, and the width of the microstrip transmission line 5 is gradually narrowed along the direction far away from the SMA joint 1.
Specifically, the other end of the microstrip transmission line 5 is connected to the vertex of the sector patch 7.
Specifically, the length of the serrations of the SSPPs structure 2 becomes gradually shorter in a direction away from the SMA joint 1.
Specifically, the SSPPs structures 2 and the microstrip transmission lines 5 are etched on the dielectric plate by an etching method.
Specifically, the dielectric plate 8 is of a single-layer plate structure, and the dielectric plate 8 is an arloading ad250 dielectric plate with a dielectric constant of 2.5.
Specifically, the microstrip transmission line 5 feeds the slot 3;
the SMA connector 1 realizes power feeding.
The present invention will be described in more detail below by way of preferred examples.
Referring to fig. 1 and fig. 2, the present invention provides a high-efficiency end-fire antenna based on SSPPs structure, including: the device comprises a circular arc-shaped microstrip transmission line, a long and thin gap, a symmetrical sawtooth SSPPs structure and an SMA joint; the gap structure, the arc-shaped microstrip transmission line and the symmetrical sawtooth-shaped SSPPs structure are all arranged on the dielectric plate; the SMA joint is positioned in the center of one side of the short side of the antenna dielectric slab and is used for carrying out radio frequency excitation on the antenna; the arc-shaped microstrip transmission line and the symmetrical sawtooth-shaped SSPPs structure are respectively printed on the ground surface and the top surface of the dielectric slab; the arc-shaped microstrip transmission line is used for feeding power to the elongated slot; the sawtooth length of the SSPPs structure is gradually changed along with the index, so that the radiation performance and the impedance matching are improved.
The working principle of the broadband circular polarization of the invention is as follows:
the center of the short side of the dielectric plate of the antenna is connected with an SMA joint for radio frequency excitation, the ground of the SMA head is connected with the metal structure in the figure 1, and the anode of the SMA head is connected with a circular arc-shaped microstrip transmission line 5 in the figure II. The circular arc shaped microstrip transmission line feeds the slot structure of fig. 1 and excites the odd mode surface wave modes in the symmetrical saw-tooth shaped SSPPs structure. The elongated slots and the symmetrically sawtooth-shaped SSPPs structure together produce a highly directional endfire beam. The metal structure is etched on an ARLONG AD250 dielectric plate with the dielectric constant of 2.5 by an etching method, the thickness is 0.762mm, and the overall size of the antenna is 216mm x 70mm x 0.762 mm.
FIG. 3 is a return loss plot for this example, showing that the return loss in the side-fire mode is substantially less than-10 dB from 1.8GHz to 4.1 GHz.
Fig. 4 shows the pattern of the present embodiment (theta is 90 °), and it can be seen that the average gain of the antenna is greater than 7 dB.
Fig. 5 is a graph showing the efficiency of the present embodiment, and it can be seen that the highest radiation efficiency of the antenna reaches 99%.
Preferred example 2:
a high efficiency end-fire antenna based on SSPPs structure, comprising: the device comprises a circular arc-shaped microstrip transmission line, a long and thin gap, a symmetrical sawtooth SSPPs structure and an SMA joint; the gap structure, the arc-shaped microstrip transmission line and the symmetrical sawtooth-shaped SSPPs structure are all arranged on the dielectric plate; the SMA joint is positioned in the center of one side of the short side of the antenna dielectric slab and is used for carrying out radio frequency excitation on the antenna; the arc-shaped microstrip transmission line and the symmetrical sawtooth-shaped SSPPs structure are respectively printed on the ground surface and the top surface of the dielectric slab; the arc-shaped microstrip transmission line is used for feeding power to the elongated slot; the sawtooth length of the SSPPs structure is gradually changed along with the index, so that the radiation performance and the impedance matching are improved.
In the above technical scheme, the dielectric plate adopts a single-layer plate structure.
In the above technical solution, the metal structure is etched on the dielectric plate by using an etching method.
In the technical scheme, the width of the arc-shaped metal microstrip line is gradually changed, so that the impedance matching performance of the antenna is improved.
In the technical scheme, the antenna feeds power to the slot by connecting a section of arc-shaped metal microstrip line through the SMA joint.
In the technical scheme, the fan-shaped patch is loaded at the tail end of the arc-shaped metal microstrip line and is used for improving the radiation efficiency of the antenna.
In the technical scheme, the SSPPs structure with the sawtooth length gradually changed along with the index and the symmetrical sawtooth shape is introduced, so that the end-fire gain and the radiation efficiency are improved.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (6)
1. A high efficiency end-fire antenna based on SSPPs structure, comprising: the device comprises a dielectric plate (8), a microstrip transmission line (5), an SSPPs structure (2) and an SMA joint (1);
the SSPPs structure (2) is arranged on the top surface of the dielectric plate (8);
the microstrip transmission line (5) is arranged on the bottom surface of the dielectric plate (8);
the SMA joint (1) is arranged in the center of one side of the short side of the medium plate (8);
the SSPPs structure (2) is a symmetrical sawtooth structure;
the length of the sawteeth of the SSPPs structure (2) is gradually reduced along the direction far away from the SMA joint (1);
the SSPPs structure (2) is symmetrical about the gap (3);
the antenna further includes: a non-etched region (6);
the SMA connector (1), the non-etching area (6) and the SSPPs structure (2) are sequentially connected;
the ground of the SMA connector (1) is connected with a non-etching area (6), and the positive electrode of the SMA connector (1) is connected with a microstrip transmission line (5);
one end of the gap (3) is connected with a circular cavity (4) arranged in the non-etching area (6), and the other end of the gap (3) is connected with a triangular opening;
the triangular opening is one end of the SSPPs structure far away from the non-etching area;
the microstrip transmission line (5) performs coupling feeding on the slot (3).
2. The high-efficiency end-fire antenna based on the SSPPs structure as recited in claim 1, wherein the microstrip transmission line (5) is arc-shaped, one end of the microstrip transmission line (5) is connected with the SMA connector (1), and the width of the microstrip transmission line (5) is gradually narrowed in the direction away from the SMA connector (1).
3. The high-efficiency end-fire antenna based on the SSPPs structure according to claim 2, wherein the other end of the microstrip transmission line (5) is connected to the vertex of the sector patch (7).
4. The high-efficiency end-fire antenna based on the SSPPs structure as claimed in claim 3, wherein the SSPPs structure (2) and the microstrip transmission line (5) are etched on the dielectric plate by etching.
5. The high-efficiency end-fire antenna based on the SSPPs structure as recited in claim 4, wherein the dielectric plate (8) is a single-layer plate structure, and the dielectric plate (8) is an ARLONG AD250 dielectric plate with a dielectric constant of 2.5.
6. The SSPPs structure-based high-efficiency end-fire antenna according to claim 5,
the SMA connector (1) realizes power feeding.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4029086A1 (en) * | 2019-11-06 | 2022-07-20 | Huawei Technologies Co., Ltd. | Dual-polarization antenna module and electronic device comprising said antenna module |
| CN111048900B (en) * | 2019-12-12 | 2021-09-21 | 上海交通大学 | VHF frequency band vertical polarization antenna based on multi-chip SSPP structure |
| CN110957580B (en) * | 2019-12-18 | 2021-10-29 | 中国计量科学研究院 | Directional optical feed antenna and directional optical feed antenna system |
| CN111262024B (en) * | 2020-01-21 | 2022-05-31 | 上海交通大学 | Low-profile vertical polarization end-fire antenna based on artificial surface plasmon structure |
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| US9140855B2 (en) * | 2013-12-30 | 2015-09-22 | Chung Hua University | Waveguide structure based on low frequency surface plasmon polaritons |
| CN109037947A (en) * | 2018-07-24 | 2018-12-18 | 中国人民解放军空军工程大学 | A kind of low RCS antenna |
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| US6008770A (en) * | 1996-06-24 | 1999-12-28 | Ricoh Company, Ltd. | Planar antenna and antenna array |
| US9142889B2 (en) * | 2010-02-02 | 2015-09-22 | Technion Research & Development Foundation Ltd. | Compact tapered slot antenna |
| CN203596414U (en) * | 2013-11-29 | 2014-05-14 | 深圳光启创新技术有限公司 | Tapered slot antenna and phased array antenna thereof |
| CN205944358U (en) * | 2016-06-28 | 2017-02-08 | 江苏赛博防务技术有限公司 | Band elimination filter based on artificial surface etc. are from excimer and complementary split ring resonator |
| CN206022610U (en) * | 2016-08-31 | 2017-03-15 | 南京长峰航天电子科技有限公司 | A kind of miniaturization Vivaldi antennas |
| CN206962016U (en) * | 2017-07-27 | 2018-02-02 | 南京信息工程大学 | A kind of end-on-fire antenna based on artificial surface phasmon |
| CN108493597B (en) * | 2018-03-21 | 2020-02-21 | 南通大学 | Millimeter wave antenna based on surface plasmon polariton |
| CN108767451B (en) * | 2018-04-04 | 2020-07-14 | 上海交通大学 | Directional diagram reconfigurable wide-angle scanning antenna based on SSPP structure |
| CN109193110B (en) * | 2018-09-03 | 2021-01-08 | 南京理工大学 | High-gain Vivaldi circularly polarized antenna |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9140855B2 (en) * | 2013-12-30 | 2015-09-22 | Chung Hua University | Waveguide structure based on low frequency surface plasmon polaritons |
| CN109037947A (en) * | 2018-07-24 | 2018-12-18 | 中国人民解放军空军工程大学 | A kind of low RCS antenna |
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