CN112542688B - Microstrip antenna and terminal equipment - Google Patents
Microstrip antenna and terminal equipment Download PDFInfo
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- CN112542688B CN112542688B CN202011363160.4A CN202011363160A CN112542688B CN 112542688 B CN112542688 B CN 112542688B CN 202011363160 A CN202011363160 A CN 202011363160A CN 112542688 B CN112542688 B CN 112542688B
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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
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
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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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Abstract
The application discloses microstrip antenna and terminal equipment, this microstrip antenna is on traditional U type metal patch's basis, offers through-hole 34 respectively at first vertical portion 31 and the vertical portion 32 of second of U type metal patch, has prolonged the route of flowing through of electric current for the resonant frequency of antenna reduces, thereby has improved the bandwidth of antenna. In addition, because only the through holes 34 are respectively formed in the first vertical portion 31 and the second vertical portion 32, the length and the width of the metal patch do not need to be increased, the weight is lighter, and the requirement of compact structure is easier to meet. In addition, the terminal equipment disclosed by the application comprises the microstrip antenna and has the same beneficial effects.
Description
Technical Field
The present application relates to the field of antenna technology, and in particular, to a microstrip antenna and a terminal device.
Background
The microstrip antenna is an antenna formed by attaching a metal thin layer as a grounding plate on one surface of a thin medium substrate, manufacturing a metal patch with a certain shape on the other surface by using a photoetching method, and feeding the patch by using a microstrip line or a coaxial probe. The microstrip antenna has the advantages of small volume, light weight, low profile and the like which are not possessed by other antennas, can conveniently realize linear polarization or circular polarization, and is easy to be integrated with an active device and a microwave circuit into a uniform component. Due to the characteristics, the microstrip antenna is widely applied.
Many existing terminal devices need to have both a GPS function and a bluetooth function, and in order to meet the application requirements of being compatible with two working frequency bands of GPS and bluetooth, a microstrip antenna should have a wide bandwidth and can meet the requirements of multiple frequency bands. Therefore, how to increase the bandwidth of the microstrip antenna to meet the application requirements of the terminal device is a key issue of concern to those skilled in the art.
Disclosure of Invention
The application aims to provide a microstrip antenna and a terminal device, wherein the microstrip antenna prolongs the flowing path of current, so that the resonant frequency of the antenna is reduced, and the bandwidth of the antenna is improved.
In order to solve the above technical problem, the present application provides a microstrip antenna, including a dielectric plate 1, a ground plate 2 flatly laid on one surface of the dielectric plate 1, and a metal patch flatly laid on the other surface of the dielectric plate 2, where the metal patch includes a horizontal portion 30, a first vertical portion 31, a second vertical portion 32, and a third vertical portion 33;
the first vertical portion 31 and the second vertical portion 32 are respectively connected with two ends of the horizontal portion 30 to form a U shape, the third vertical portion 33 is located between the first vertical portion 31 and the second vertical portion 32, a first end of the third vertical portion 33 is connected with the horizontal portion 30, a second end of the third vertical portion 33 is provided with a feeding point, and the first vertical portion 31 and the second vertical portion 32 are provided with through holes 34.
Preferably, a first end of the third vertical portion 33 protrudes from the horizontal portion 30.
Preferably, the horizontal portion 30, the first vertical portion 31, the second vertical portion 32, and the third vertical portion 33 are all rectangular.
Preferably, the through hole 34 is rectangular.
Preferably, the through holes of the first and second vertical portions 31 and 32 have the same size.
Preferably, the dielectric slab 1 is rectangular, the first vertical portion 31, the second vertical portion 32, and the third vertical portion 33 are all perpendicular to the horizontal portion 30, the third vertical portion 33 is located in the middle of the horizontal portion 30, and the first vertical portion 31 and the second vertical portion 32 are symmetrical with respect to the third vertical portion 33 so that the metal patches are symmetrical with respect to the axis of the dielectric slab 1.
Preferably, the feeding point is located at the center of the largest inscribed circle of the third vertical portion 33.
Preferably, the dielectric plate 1 is an acrylic dielectric plate.
Preferably, the dielectric plate 1 and the ground plate 2 are both provided with through holes for coaxial lines to pass through so that the coaxial lines are connected with the feeding points.
In order to solve the above technical problem, the present application provides a terminal device, including the microstrip antenna.
The microstrip antenna that this application provided, on traditional U type metal patch's basis, set up the through-hole respectively in the vertical portion of first and the vertical portion of second of U type metal patch, prolonged the route of flowing through of electric current for the resonant frequency of antenna reduces, thereby has improved the bandwidth of antenna. In addition, as the through holes are formed in the first vertical portion and the second vertical portion respectively, the length and the width of the metal patch do not need to be increased, the weight is lighter, and the requirement of compact structure is met more easily.
In addition, the terminal equipment provided by the application comprises the microstrip antenna, and has the same beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a top view of a microstrip antenna according to an embodiment of the present application;
fig. 2 is a side view of a microstrip antenna shown in fig. 1 according to an embodiment of the present application;
fig. 3 is a top view of another microstrip antenna provided in the embodiments of the present application;
fig. 4 is an antenna return loss graph corresponding to the parameters in table 1 according to an embodiment of the present disclosure;
fig. 5 is a vertical direction diagram corresponding to a parameter in table 1 provided in an embodiment of the present application;
fig. 6 is a horizontal plane directional diagram corresponding to the parameters in table 1 according to an embodiment of the present disclosure;
the reference numbers are as follows: 1 is a dielectric plate, 2 is a ground plate, 30 is a horizontal portion, 31 is a first vertical portion, 32 is a second vertical portion, 33 is a third vertical portion, and 34 is a through hole.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
The core of the application is to provide a microstrip antenna and a terminal device.
In order that those skilled in the art will better understand the disclosure, the following detailed description is given with reference to the accompanying drawings.
Fig. 1 is a top view of a microstrip antenna according to an embodiment of the present disclosure. Fig. 2 is a side view of a microstrip antenna shown in fig. 1 according to an embodiment of the present application. As shown in fig. 1 and 2, the microstrip antenna includes a dielectric plate 1, a ground plate 2, and a metal patch. The grounding plate 2 is positioned at the lower layer of the dielectric plate 1, and the metal patch is positioned at the upper layer of the dielectric plate 1. The metal patch includes a horizontal portion 30, a first vertical portion 31, a second vertical portion 32, and a third vertical portion 33. In the microstrip antenna shown in fig. 1, the first vertical portion 31 and the second vertical portion 32 are complete rectangles, and the first end of the third vertical portion 33 is flush with the horizontal portion 30. The feeding point is located at the second end of the third vertical portion 33, and through holes are opened at corresponding positions of the dielectric plate 1 and the ground plate 2 for coaxial line to pass through and connect with the feeding point, so that current flows through the metal patch. Since the first vertical portion 31 and the second vertical portion 32 of the metal patch are complete rectangles, the path length through which the current flows is limited, resulting in a limited radiation length of the antenna, so that the resonant frequency is high, a long wavelength range cannot be achieved, and the bandwidth of the antenna is limited.
On the basis, the application provides a microstrip antenna which is improved on the basis of the microstrip antenna shown in fig. 1. Fig. 3 is a top view of another microstrip antenna provided in the embodiments of the present application. As shown in fig. 3, the microstrip antenna includes a dielectric plate 1 and a ground plate 2 laid on one surface of the dielectric plate 1, and further includes a metal patch laid on the other surface of the dielectric plate 1, where the metal patch includes a horizontal portion 30, a first vertical portion 31, a second vertical portion 32, and a third vertical portion 33. The first vertical portion 31 and the second vertical portion 32 are respectively connected with two ends of the horizontal portion 30 to form a U shape, the third vertical portion 33 is located between the first vertical portion 31 and the second vertical portion 32, a first end of the third vertical portion 33 is connected with the horizontal portion 30, a second end of the third vertical portion 33 is provided with a feeding point, and the first vertical portion 31 and the second vertical portion 32 are provided with a through hole 34.
In a specific implementation, the shape of the through hole 34 is not limited, and may be a rectangle, a bending shape, etc., and in consideration of the purpose of omnidirectional radiation and the processing difficulty, a rectangle is usually selected, that is, rectangular through holes are opened on the first vertical portion 31 and the second vertical portion 32. As shown in fig. 3, the length of the metal patch as a whole is L1, and the width of the metal patch as a whole is W1, wherein the outer side edges of the first vertical portion 31 and the second vertical portion 32 are two side edges of the metal patch, so that the length of the first vertical portion 31 and the second vertical portion 32 is L1, the distance between the first vertical portion 31 and the third vertical portion 33 is W2, and the distance between the second vertical portion 32 and the third vertical portion 33 is W2. The rectangular through hole on the first vertical portion 31 has a length of L3 and a width of W3, the rectangular through hole on the second vertical portion 32 has a length of L3 and a width of W3, and the third vertical portion 33 has a length of d. It is to be understood that the specific dimensions of the first vertical portion 31, the second vertical portion 32, the third vertical portion 33 and the through hole 34 mentioned above need to be determined according to actual situations, and the present embodiment is not limited thereto. In addition, the feeding point is usually located at the center of the largest inscribed circle of the third vertical portion 33, and the circle centered on the feeding point in fig. 3 is only for illustrating the position of the feeding point and does not represent that the third vertical portion has the circle in practice.
Since the first vertical portion 31 and the second vertical portion 32 of the metal patch are respectively provided with the through holes 34, the path of current is prolonged, the radiation length of the antenna is increased, the resonant frequency is reduced, and the purpose of increasing the bandwidth of the antenna is finally achieved.
It should be noted that the metal patch mentioned in this embodiment may be of an integral structure or a separate structure, and in general, a partial region is hollowed out from a complete rectangular metal patch according to the above requirements to form the metal patch shown in fig. 3. The metal patch mentioned in this embodiment may be any conductive metal, for example, a copper metal patch or an aluminum metal patch. The material of the dielectric plate 1 mentioned in this embodiment is not limited, and may be, for example, an acrylic dielectric plate, and the dielectric constant thereof may be 3.2.
The microstrip antenna that this embodiment provided, on traditional U type metal patch's basis, set up the through-hole respectively in U type metal patch's first vertical portion and the vertical portion of second, prolonged the route that flows through of electric current for the resonant frequency of antenna reduces, thereby has improved the bandwidth of antenna. In addition, only the through holes are respectively formed in the first vertical portion and the second vertical portion, so that the length and the width of the metal patch do not need to be increased, the weight is lighter, and the requirement of compact structure is met more easily.
As shown in fig. 3, in the above embodiment, the first end of the third vertical portion 33 protrudes out of the horizontal portion 30. To further increase the return path of the current, in this example, the third vertical portion 33 is elongated such that a first end of the third vertical portion 33 protrudes out of the horizontal portion 30. In fig. 3, the third vertical portion 33 has a width d and a length b. It is understood that the length of the third vertical portion 33 protruding the horizontal portion 30 needs to be selected in combination with other sizes of the metal patch, and the embodiment is not limited thereto.
In this embodiment, the third vertical portion is extended by opening through holes in the first vertical portion and the second vertical portion, so that the third vertical portion protrudes from the horizontal portion, and the resonance frequency can be further reduced.
On the basis of the above embodiment, the horizontal portion 30, the first vertical portion 31, the second vertical portion 32, and the third vertical portion 33 are all rectangular, as shown in fig. 3. The purpose of setting up the rectangle lies in being convenient for process, and forms symmetrical structure easily, and symmetrical structure is favorable to improving the omnidirectional radiation of antenna. On this basis, the through-hole 34 is rectangular, and the through-hole 34 of the first upright portion 31 and the through-hole 34 of the second upright portion 32 are the same size. In order to achieve a better omnidirectional radiation effect, as shown in fig. 3, the dielectric slab 1 is rectangular, the first vertical portion 31, the second vertical portion 32, and the third vertical portion 33 are all perpendicular to the horizontal portion 30, the third vertical portion 33 is located in the middle of the horizontal portion 30, and the first vertical portion 31 and the second vertical portion 32 are symmetrical with respect to the third vertical portion 33 so that the metal patches are symmetrical with respect to the axis of the dielectric slab 1.
In order to verify the practical effect that the metal patch mentioned above can reach, the simulation result is given in this application. The metal patch structure mentioned above is simulated by using commercial electromagnetic simulation software, and finally the structural parameters are determined as shown in the following table, and the simulation results are shown in fig. 4-6.
TABLE 1
Fig. 4 is a return loss diagram of an antenna corresponding to parameters in table 1 according to an embodiment of the present application. As can be seen from the figure, the microstrip antenna has two radiation frequency bands of 1.55GHz-1.7GHz and 2.35GHz-2.55GHz respectively, and the return loss is-10.9 dB and-16.7 dB respectively. The-10 dB bandwidth is respectively 150MHz and 200MHz, and both frequency bands have very wide bandwidths and can cover the working frequency bands of Bluetooth and four global positioning systems: global Positioning System (GPS) L1(1575.42MHz), GLONASs (GLONAS) L1(1602MHz), beidou positioning system B1(1561MHz), Galileo positioning system (Galileo) L1(1575.42 MHz). Fig. 5 is a vertical direction diagram corresponding to a parameter in table 1 according to an embodiment of the present disclosure. Fig. 6 is a horizontal plane directional diagram corresponding to parameters in table 1 according to an embodiment of the present disclosure. From the directional diagram, at 1575MHz, the microstrip antenna has omnidirectional radiation in half space and simultaneously has higher gain. Therefore, the microstrip antenna provided by the embodiment can be compatible with dual-frequency antennas of various types of GPS and Bluetooth working frequency bands, obtains omnidirectional radiation in a half space, and has higher gain.
Finally, this application embodiment still provides a terminal equipment, and this terminal equipment is the product that uses microstrip antenna, for example, vehicle navigation, intelligent head-mounted apparatus (like VR, AR), intelligent wrist-watch, intelligent code table, locator etc.. The terminal device includes the microstrip antenna mentioned in the above embodiments, and other necessary components, and the present embodiment is not limited.
The terminal device provided by the embodiment comprises the microstrip antenna, wherein through holes are respectively formed in the first vertical part and the second vertical part of the U-shaped metal patch of the microstrip antenna on the basis of the traditional U-shaped metal patch, so that the flowing path of current is prolonged, the resonant frequency of the antenna is reduced, and the bandwidth of the antenna is improved. In addition, only the through holes are respectively formed in the first vertical portion and the second vertical portion, so that the length and the width of the metal patch do not need to be increased, the weight is lighter, and the requirement of compact structure is met more easily.
A microstrip antenna and a terminal device provided in the present application are described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It should also be noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (9)
1. A microstrip antenna compatible with GPS and Bluetooth comprises a dielectric plate (1) and a ground plate (2) paved on one surface of the dielectric plate (1), and is characterized by further comprising a metal patch paved on the other surface of the dielectric plate (2), wherein the metal patch comprises a horizontal part (30), a first vertical part (31), a second vertical part (32) and a third vertical part (33);
the first vertical part (31) and the second vertical part (32) are respectively connected with two ends of the horizontal part (30) to form a U shape, the third vertical part (33) is positioned between the first vertical part (31) and the second vertical part (32), the first end of the third vertical part (33) is connected with the horizontal part (30), the second end of the third vertical part (33) is provided with a feeding point, and the first vertical part (31) and the second vertical part (32) are provided with through holes (34);
a first end of the third vertical portion (33) protrudes out of the horizontal portion (30).
2. The microstrip antenna according to claim 1, wherein the horizontal portion (30), the first vertical portion (31), the second vertical portion (32) and the third vertical portion (33) are all rectangular.
3. Microstrip antenna according to claim 2, characterized in that the through hole (34) is rectangular.
4. A microstrip antenna according to claim 3, wherein the through hole of the first upright portion (31) and the through hole of the second upright portion (32) are of the same size.
5. The microstrip antenna according to claim 2, wherein the dielectric plate (1) is rectangular, the first vertical portion (31), the second vertical portion (32), and the third vertical portion (33) are all perpendicular to the horizontal portion (30), the third vertical portion (33) is located in a middle portion of the horizontal portion (30), and the first vertical portion (31) and the second vertical portion (32) are symmetrical with respect to the third vertical portion (33) such that the metal patch is symmetrical with respect to an axis of the dielectric plate (1).
6. A microstrip antenna according to claim 1, wherein the feed point is located at the centre of the largest inscribed circle of the third upright portion (33).
7. The microstrip antenna according to claim 1, wherein the dielectric plate (1) is an acrylic dielectric plate.
8. The microstrip antenna according to claim 1, wherein the dielectric plate (1) and the ground plate (2) are each provided with a through hole for a coaxial line to pass through so that the coaxial line is connected to the feeding point.
9. A terminal device, characterized in that it comprises a microstrip antenna according to any of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011363160.4A CN112542688B (en) | 2020-11-27 | 2020-11-27 | Microstrip antenna and terminal equipment |
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| CN202011363160.4A CN112542688B (en) | 2020-11-27 | 2020-11-27 | Microstrip antenna and terminal equipment |
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| CN112542688A CN112542688A (en) | 2021-03-23 |
| CN112542688B true CN112542688B (en) | 2022-07-19 |
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| CN109841950A (en) * | 2019-03-29 | 2019-06-04 | 钟祥博谦信息科技有限公司 | Wideband filtered antenna |
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| CN1649206A (en) * | 2004-03-29 | 2005-08-03 | 北京邮电大学 | Multiple band broad band micro strip plaster antenna |
| CN1564375A (en) * | 2004-04-08 | 2005-01-12 | 上海交通大学 | Method of controlling double-frequency microband antenna resonance frequency |
| CN101420066B (en) * | 2008-11-21 | 2013-04-17 | 中国电子科技集团公司第三十八研究所 | Wideband single layer microstrip patch antenna |
| CN104009292B (en) * | 2014-06-05 | 2016-10-26 | 太原理工大学 | Miniaturization wide-band microstrip aerial |
| CN104218311B (en) * | 2014-08-22 | 2017-12-22 | 华为技术有限公司 | A kind of microstrip antenna and communication equipment |
| CN106329143A (en) * | 2015-06-15 | 2017-01-11 | 张家港贸安贸易有限公司 | High-bandwidth microstrip antenna |
| CN105071032A (en) * | 2015-08-25 | 2015-11-18 | 中国航空无线电电子研究所 | Miniaturization broadband microstrip antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6359589B1 (en) * | 2000-06-23 | 2002-03-19 | Kosan Information And Technologies Co., Ltd. | Microstrip antenna |
| CN105244614A (en) * | 2015-10-29 | 2016-01-13 | 中国船舶重工集团公司第七二四研究所 | Broadband capacitive feed miniature microstrip paster antenna |
| CN107623187A (en) * | 2016-07-14 | 2018-01-23 | 上海诺基亚贝尔股份有限公司 | Microstrip antenna, aerial array and microstrip antenna manufacture method |
| CN109841950A (en) * | 2019-03-29 | 2019-06-04 | 钟祥博谦信息科技有限公司 | Wideband filtered antenna |
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