CN113131208A - Multi-band microstrip antenna and equipment - Google Patents
Multi-band microstrip antenna and equipment Download PDFInfo
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- CN113131208A CN113131208A CN202110436484.4A CN202110436484A CN113131208A CN 113131208 A CN113131208 A CN 113131208A CN 202110436484 A CN202110436484 A CN 202110436484A CN 113131208 A CN113131208 A CN 113131208A
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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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a multi-band microstrip antenna and equipment. The metal patch is used for realizing the dual-frequency characteristic under the excitation of the feed of the coaxial feeder, and the working frequency band of the microstrip antenna is adjusted through the hollow grooves so as to increase the working frequency band of the microstrip antenna. Therefore, the metal patch realizes the characteristic of more frequency bands on a single feed point by a mode of arranging a plurality of groove combinations on the metal patch through a coaxial feeder, thereby increasing the coverage frequency band of the microstrip antenna and expanding the application field of the microstrip antenna.
Description
Technical Field
The invention relates to the field of communication of the Internet of things, in particular to a multi-band microstrip antenna and equipment.
Background
With the development of the communication technology of the internet of things, higher and higher requirements are put on an antenna as a communication component. The microstrip antenna has the following advantages: the volume is small; the weight is light; a low profile; linear polarization or circular polarization is easy to realize; easy to attach to metal objects or textile surfaces; the integrated circuit is easy to integrate with an active device and a microwave circuit into a unified assembly, and is widely researched and applied in the field of communication of the Internet of things. At present, the traditional microstrip antenna usually realizes dual-frequency design on one microstrip antenna, and has the problems of less coverage frequency band and narrower application field.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a multi-band microstrip antenna and equipment, wherein a metal patch realizes the characteristics of more frequency bands on a single feed point by a coaxial feeder and a mode of arranging a plurality of groove combinations on the metal patch, thereby increasing the coverage frequency band of the microstrip antenna and expanding the application field of the microstrip antenna.
In order to solve the above technical problem, the present invention provides a multiband microstrip antenna, comprising:
a dielectric layer;
the metal patch is arranged on the upper layer of the dielectric layer and provided with a plurality of hollow grooves;
the grounding layer is arranged on the lower layer of the dielectric layer;
the coaxial feeder penetrates through the dielectric layer, the wire core is connected with the metal patch, and the shell is connected with the grounding layer;
the metal patch is used for realizing the dual-frequency characteristic under the excitation of the feed of the coaxial feeder, and the working frequency band of the microstrip antenna is adjusted through the plurality of hollow grooves so as to increase the working frequency band of the microstrip antenna.
Preferably, the metal patch is a rectangular patch, and a connection position of the core of the coaxial feeder and the metal patch is located within a range of a preset length from a diagonal of the metal patch.
Preferably, the plurality of hollow slots on the metal patch include:
a first U-shaped groove;
the second U-shaped groove is positioned on the inner side of the first U-shaped groove;
the opening directions of the first U-shaped groove and the second U-shaped groove are the same.
Preferably, the plurality of hollow slots on the metal patch further comprises:
and the circular groove is positioned on the inner side of the second U-shaped groove.
Preferably, the plurality of hollow slots on the metal patch further comprises:
and the two rectangular grooves are positioned on the inner side of the first U-shaped groove and the outer side of the second U-shaped groove.
Preferably, the first U-shaped groove, the second U-shaped groove and the circular groove are all symmetrical about a central axis of the metal patch; the two rectangular slots are symmetrical about a central axis of the metal patch.
Preferably, the planar size of the dielectric layer is larger than that of the metal patch, and the planar size of the dielectric layer is equal to that of the ground layer; and the metal patch is centrosymmetric with respect to the dielectric layer.
Preferably, each layer of size parameters of the microstrip antenna is obtained by performing simulation optimization on a structural model of the microstrip antenna under the condition that the microstrip antenna reaches a target radiation frequency band.
Preferably, the target radiation frequency band of the microstrip antenna comprises 1.2GHz and/or 1.6GHz and/or 2.4GHz and/or 3.5GHz and/or 5.3GHz and/or 5.8 GHz.
In order to solve the technical problem, the invention further provides equipment comprising any one of the multi-band microstrip antennas.
The invention provides a multi-band microstrip antenna which comprises a dielectric layer, a metal patch, a ground layer and a coaxial feeder line. The metal patch is used for realizing the dual-frequency characteristic under the excitation of the feed of the coaxial feeder, and the working frequency band of the microstrip antenna is adjusted through the hollow grooves so as to increase the working frequency band of the microstrip antenna. Therefore, the metal patch realizes the characteristic of more frequency bands on a single feed point by a mode of arranging a plurality of groove combinations on the metal patch through a coaxial feeder, thereby increasing the coverage frequency band of the microstrip antenna and expanding the application field of the microstrip antenna.
The invention also provides equipment which has the same beneficial effects as the microstrip antenna.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and 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 invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of a vertical plane structure of a multiband microstrip antenna provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a horizontal plane structure of a multiband microstrip antenna according to an embodiment of the present invention;
FIG. 3 is a return loss diagram of a multiband microstrip antenna according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a horizontal plane radiation direction of a multiband microstrip antenna according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a vertical plane radiation direction of a multiband microstrip antenna provided in an embodiment of the present invention.
Detailed Description
The core of the invention is to provide a multi-band microstrip antenna and equipment, wherein a metal patch realizes the characteristics of more frequency bands on a single feed point by a coaxial feeder and a mode of arranging a plurality of groove combinations on the metal patch, thereby increasing the coverage frequency band of the microstrip antenna and expanding the application field of the microstrip antenna.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a vertical plane structure of a multiband microstrip antenna according to an embodiment of the present invention.
The multi-band microstrip antenna includes:
a dielectric layer 1;
the metal patch 2 is arranged on the upper layer of the dielectric layer 1 and is provided with a plurality of hollow grooves;
a grounding layer 3 arranged on the lower layer of the dielectric layer 1;
a coaxial feeder 4 which penetrates through the dielectric layer 1, is connected with the metal patch 2 through the wire core and is connected with the grounding layer 3 through the shell;
the metal patch 2 is used for realizing the dual-frequency characteristic under the excitation of the feed of the coaxial feeder 4, and the working frequency band of the microstrip antenna is adjusted through the plurality of hollow grooves so as to increase the working frequency band of the microstrip antenna.
Specifically, the multi-band microstrip antenna of the present application includes a dielectric layer 1, a metal patch 2, a ground layer 3 and a coaxial feeder 4, and its working principle is:
the multi-band microstrip antenna is composed of an upper layer structure, a middle layer structure and a lower layer structure, wherein the uppermost layer structure is a metal patch 2, and a metal material with good conductivity and low cost, such as copper, is generally selected; the middle layer structure is an insulating medium layer 1, and an FR4 substrate which is convenient to process and controllable in cost is generally selected as the medium layer 1; the lowest layer structure is a grounding layer 3, and a copper foil is generally selected as the grounding layer 3 for connecting a device ground of a device.
The multi-band microstrip antenna adopts a coaxial feed method, namely, radio frequency energy is transmitted through a coaxial feed line 4. The coaxial feeder 4 is composed of an inner layer, a middle layer and an outer layer, wherein the innermost layer is a wire core and is generally made of copper metal; the middle layer structure is an insulating medium layer; the outermost layer of the structure is a shell which is generally made of copper metal, and the shell is used as a metal shielding layer, so that the anti-interference capability of the coaxial feeder 4 is enhanced, and the transmission loss of the coaxial feeder 4 is reduced. More specifically, the inner diameter of the coaxial feed line 4 is set to 0.3mm, and the outer diameter is set to 0.8mm, which is not particularly limited herein.
The specific connection structure of the coaxial feeder 4 is as follows: the coaxial feeder 4 penetrates through the dielectric layer 1, a wire core of the coaxial feeder 4 is connected with the metal patch 2, and a shell of the coaxial feeder 4 is connected with the ground layer 3. If the device is a sending device, the device can transmit radio frequency energy to the metal patch 2 through the coaxial feeder 4 and emit the radio frequency energy by using the metal patch 2 as an antenna; if the device is a receiving device, the device can receive radio frequency energy transmitted from the outside through the metal patch 2 and transmit the radio frequency energy to the inside of the device for processing by the coaxial feeder 4. It should be noted that the metal patch 2 can implement dual-band characteristics under the excitation of the feed of the coaxial feed line 4, such as 2.4GHz and 5GHz, and can cover a bluetooth band (2.4GHz) and a WLAN (Wireless Local Area Network) dual-band (2.4GHz and 5 GHz).
In order to make a microstrip antenna cover more frequency bands, the technical means adopted by the application is as follows: the metal patch 2 is provided with a plurality of hollow grooves, and the metal patch 2 can adjust the working frequency band of the microstrip antenna through the plurality of hollow grooves, so that the working frequency band of the microstrip antenna can be increased, such as increasing the frequency bands of 1.2GHz, 1.6GHz and 3.5GHz, and the metal patch can cover the frequency bands of GPS (Global Positioning System) dual-frequency bands (1575.42MHz, 1227.60Mhz) and WiMAX (World Interoperability for Microwave Access) (3.5 GHz).
The invention provides a multi-band microstrip antenna which comprises a dielectric layer, a metal patch, a ground layer and a coaxial feeder line. The metal patch is used for realizing the dual-frequency characteristic under the excitation of the feed of the coaxial feeder, and the working frequency band of the microstrip antenna is adjusted through the hollow grooves so as to increase the working frequency band of the microstrip antenna. Therefore, the metal patch realizes the characteristic of more frequency bands on a single feed point by a mode of arranging a plurality of groove combinations on the metal patch through a coaxial feeder, thereby increasing the coverage frequency band of the microstrip antenna and expanding the application field of the microstrip antenna.
On the basis of the above-described embodiment:
referring to fig. 2, fig. 2 is a schematic diagram of a horizontal plane structure of a multiband microstrip antenna according to an embodiment of the present invention.
As an alternative embodiment, the metal patch 2 is a rectangular patch, and the connection position of the core of the coaxial feeder 4 and the metal patch 2 is located within a range of a preset length from a diagonal of the metal patch 2.
Specifically, the metal patch 2 of the present application is a rectangular patch, wherein the connection position of the core of the coaxial feeder 4 and the metal patch 2 is set near or on the diagonal of the metal patch 2, specifically, the connection position of the core of the coaxial feeder 4 and the metal patch 2 is located within a range of a preset length from the diagonal of the metal patch 2, so that the metal patch 2 can realize dual-frequency characteristics such as 2.4GHz and 5GHz under the excitation of the feeding of the coaxial feeder 4.
As an alternative embodiment, the plurality of hollow slots on the metal patch 2 includes:
a first U-shaped groove 21;
a second U-shaped groove 22 located inside the first U-shaped groove 21;
wherein, the opening directions of the first U-shaped groove 21 and the second U-shaped groove 22 are the same.
Specifically, a plurality of hollow grooves include first U type groove 21 and second U type groove 22 on the metal paster 2 of this application, and its theory of operation is:
first U type groove 21 and second U type groove 22 are all located on metal paster 2, and second U type groove 22 is located first U type groove 21 inboard, and the opening direction of the two is the same. The first U-shaped groove 21 and the second U-shaped groove 22 are provided to adjust the dual-frequency characteristics of the metal patch 2 under the coaxial feeder 4 to characteristics of more frequency bands, such as 2.4GHz and 5GHz to characteristics of three frequency bands, i.e., 2.4GHz, 5.3GHz, and 5.8 GHz.
As an alternative embodiment, the plurality of hollow slots on the metal patch 2 further includes:
a circular groove 23 located inside the second U-shaped groove 22.
Further, a plurality of hollow grooves still include circular groove 23 on the metal paster 2 of this application, and its theory of operation is:
the circular groove 23 is arranged on the metal patch 2, and the circular groove 23 is positioned on the inner side of the second U-shaped groove 22. The circular groove 23 is provided to adjust the operating frequency band of the metal patch 2 to the characteristics of lower frequency bands, such as 1.2GHz and 1.6 GHz.
As an alternative embodiment, the plurality of hollow slots on the metal patch 2 further includes:
two rectangular grooves located inside the first U-shaped groove 21 and outside the second U-shaped groove 22.
Further, a plurality of hollow grooves on the metal patch 2 of this application still include two rectangular channels (first rectangular channel 24, second rectangular channel 25), and its theory of operation is:
the first rectangular groove 24 and the second rectangular groove 25 are arranged on the metal patch 2, the first rectangular groove 24 and the second rectangular groove 25 are the same in size, and the first rectangular groove 24 and the second rectangular groove 25 are both located on the inner side of the first U-shaped groove 21 and the outer side of the second U-shaped groove 22. The first rectangular groove 24 and the second rectangular groove 25 are arranged to optimize the reflection coefficient of the metal patch 2 in the existing radiation frequency band, so that the microstrip antenna has good matching performance in the existing radiation frequency band.
As an alternative embodiment, the first U-shaped groove 21, the second U-shaped groove 22 and the circular groove 23 are all symmetrical about the central axis of the metal patch 2; the two rectangular grooves are symmetrical about the central axis of the metal patch 2.
Specifically, the first U-shaped groove 21 itself is symmetrical with respect to the central axis of the metal patch 2, the second U-shaped groove 22 itself is symmetrical with respect to the central axis of the metal patch 2, and the circular groove 23 itself is symmetrical with respect to the central axis of the metal patch 2; the first rectangular groove 24 and the second rectangular groove 25 are both symmetrical about the central axis of the metal patch 2, so that the advantage of the arrangement is that the matching performance of the microstrip antenna in the existing radiation frequency band is improved.
As an alternative embodiment, the planar size of the dielectric layer 1 is larger than that of the metal patch 2, and the planar size of the dielectric layer 1 is equal to that of the ground layer 3; and the metal patch 2 is centrosymmetric with respect to the dielectric layer 1.
Specifically, the plane size of the dielectric layer 1 is larger than the plane size of the metal patch 2, that is, the length of the dielectric layer 1 is larger than the length of the metal patch 2, and the width of the dielectric layer 1 is larger than the width of the metal patch 2; the plane size of the dielectric layer 1 is equal to the plane size of the grounding layer 3, namely the length and the width of the grounding layer 3 are the same as those of the dielectric layer 1; the metal patch 2 is symmetrical with respect to the center of the dielectric layer 1, so that the advantage of the arrangement is that the matching performance of the microstrip antenna in the existing radiation frequency band is further improved.
As an optional embodiment, the size parameters of each layer of the microstrip antenna are obtained by performing simulation optimization on a structural model of the microstrip antenna under the condition that the microstrip antenna reaches a target radiation frequency band.
Specifically, the method for obtaining the size parameters of each layer of the microstrip antenna (i.e., the size parameters of each layer of the microstrip antenna) according to the present application is as follows: and establishing a structural model of the microstrip antenna according to the three-layer structural design of the microstrip antenna. The target radiation frequency band of the microstrip antenna is taken as a simulation optimization target, electromagnetic simulation software (such as a three-dimensional electromagnetic analysis software package CST) is utilized to carry out simulation optimization on a structural model of the microstrip antenna, and finally, size parameters of each layer of the microstrip antenna meeting the target radiation frequency band are determined, so that a reference basis is provided for manufacturing the microstrip antenna.
As an alternative embodiment, the target radiation frequency band of the microstrip antenna comprises 1.2GHz and/or 1.6GHz and/or 2.4GHz and/or 3.5GHz and/or 5.3GHz and/or 5.8 GHz.
Specifically, as shown in fig. 1 and fig. 2, the metal patch 2 is a rectangular copper patch, and has a length of L0 and a width of W0; the first U-shaped groove 21 is U2 long and U1 wide; the length of the second U-shaped groove 22 is U4, and the width is U3; the first rectangular groove 24 and the second rectangular groove 25 are equal in size, and have a length of L1 and a width of W1; the circular groove 23 has a radius R1. The dielectric layer 1 was an FR4 substrate having a dielectric constant of 4.6, a thickness of h, a length of L, and a width of W. The grounding layer 3 is made of copper foil, is L in length and W in width and is the same as the dielectric layer 1. The coaxial feed line 4 has an inner diameter of 0.3mm and an outer diameter of 0.8mm, with central coordinates (X0, Y0).
The target radiation frequency band of the microstrip antenna can be set as follows: 1.2GHz, 1.6GHz, 2.4GHz, 3.5GHz, 5.3GHz and 5.8GHz (only some of which may be provided). Taking the target radiation frequency band of the microstrip antenna as a simulation optimization target, performing simulation optimization on the structural model of the microstrip antenna by using electromagnetic simulation software, and finally determining the size parameters of each layer of the microstrip antenna meeting the target radiation frequency band as follows:
TABLE 1
| Parameter(s) | L | W | L0 | W0 | U1 | U2 | U3 | U4 | L1 | W1 | R1 | X0 | Y0 |
| mm | 36.8 | 44.2 | 26.7 | 28 | 22 | 25 | 14 | 18 | 3 | 2 | 5 | 8 | -8.6 |
And the simulation result of the microstrip antenna is shown in fig. 3-5, and it can be seen from fig. 3 that the microstrip antenna has a plurality of radiation frequency bands of-17.7 dB, -13dB, -17.9dB, -10.4dB, -11.3dB, -13dB, respectively, at 1.2GHz, 1.6GHz, 2.4GHz, 3.5GHz, 5.3GHz, and 5.8GHz, respectively, and the reflection coefficients are-17.7 dB, -13dB, -17.9dB, -10.4dB, -11.3dB, and-13 dB, respectively, and the microstrip antenna has good matching performance in the frequency bands. As can be seen from the radiation patterns in fig. 4 and 5, in the above radiation frequency band, the microstrip antenna has an omnidirectional radiation characteristic in a half space, and can be conveniently assembled in the interior and exterior of the device and on various complex surfaces.
In summary, the present application is based on a rectangular patch antenna, and a multi-frequency characteristic is realized on a single feed point by a coaxial feed at a position near a diagonal line and a method of forming a combination of a U-shaped slot, a circular slot, and a rectangular slot on the rectangular patch, so that the microstrip antenna of the present application can cover a GPS dual-band (1575.42MHz, 1227.60MHz), a bluetooth band (2.4GHz), a WLAN dual-band (2.4GHz, 5GHz), a WiMAX band (3.5GHz), and the like, and has advantages of multi-band, high gain, small size, low cost, low complexity, and the like.
That is to say, the microstrip antenna can support WIFI, bluetooth, GPS and WiMAX in a wireless system, and can be used in an intelligent internet of things terminal; the product can also be used on wearable products, such as smart watches, smart bracelets, smart clothing, AR (Augmented Reality) devices, VR (Virtual Reality) devices, and other products; the method can also be used in other products such as logistics asset tracking products, intelligent household appliances and intelligent meters, and also can be used in industrial control scenes.
The application also provides equipment comprising any one of the multi-band microstrip antennas.
For the introduction of the device provided in the present application, please refer to the above embodiments of the microstrip antenna, which are not described herein again.
It is further noted that, in the present 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.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A multi-band microstrip antenna comprising:
a dielectric layer;
the metal patch is arranged on the upper layer of the dielectric layer and provided with a plurality of hollow grooves;
the grounding layer is arranged on the lower layer of the dielectric layer;
the coaxial feeder penetrates through the dielectric layer, the wire core is connected with the metal patch, and the shell is connected with the grounding layer;
the metal patch is used for realizing the dual-frequency characteristic under the excitation of the feed of the coaxial feeder, and the working frequency band of the microstrip antenna is adjusted through the plurality of hollow grooves so as to increase the working frequency band of the microstrip antenna.
2. The multiband microstrip antenna of claim 1, wherein the metal patch is a rectangular patch, and a connection position of the core of the coaxial feed line and the metal patch is located within a range of a predetermined length from a diagonal of the metal patch.
3. The multiband microstrip antenna of claim 1 wherein the plurality of hollow slots on the metal patch comprises:
a first U-shaped groove;
the second U-shaped groove is positioned on the inner side of the first U-shaped groove;
the opening directions of the first U-shaped groove and the second U-shaped groove are the same.
4. The multiband microstrip antenna of claim 3 wherein the plurality of hollow slots on the metal patch further comprises:
and the circular groove is positioned on the inner side of the second U-shaped groove.
5. The multiband microstrip antenna of claim 4 wherein the plurality of hollow slots on the metal patch further comprises:
and the two rectangular grooves are positioned on the inner side of the first U-shaped groove and the outer side of the second U-shaped groove.
6. The multiband microstrip antenna of claim 5 wherein the first U-shaped groove, the second U-shaped groove and the circular groove are all symmetrical about a central axis of the metal patch; the two rectangular slots are symmetrical about a central axis of the metal patch.
7. The multiband microstrip antenna of claim 1, wherein the planar dimension of the dielectric layer is larger than the planar dimension of the metal patch, the planar dimension of the dielectric layer being equal to the planar dimension of the ground layer; and the metal patch is centrosymmetric with respect to the dielectric layer.
8. The multiband microstrip antenna of any one of claims 1 to 7, wherein dimensional parameters of each layer of the microstrip antenna are obtained by simulation optimization of a structural model of the microstrip antenna under a condition that the microstrip antenna reaches a target radiation band.
9. The multiband microstrip antenna of claim 8, wherein the target radiation band of the microstrip antenna comprises 1.2GHz and/or 1.6GHz and/or 2.4GHz and/or 3.5GHz and/or 5.3GHz and/or 5.8 GHz.
10. A device comprising a multiband microstrip antenna according to any of claims 1 to 9.
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| US20130241794A1 (en) * | 2012-02-24 | 2013-09-19 | Tapas Chakravarty | Microstrip antenna |
| CN105024145A (en) * | 2015-08-12 | 2015-11-04 | 四川省韬光通信有限公司 | Miniature high-gain microstrip antenna |
| CN106785393A (en) * | 2016-12-19 | 2017-05-31 | 中国电子科技集团公司第二十研究所 | A kind of double frequency based on plane single pole sub antenna lobe millimeter wave micro-strip antenna wide |
| CN208352516U (en) * | 2018-07-10 | 2019-01-08 | 南京信息工程大学 | A kind of wide-band miniaturization Beidou micro-strip center-fed antenna |
| CN209232958U (en) * | 2019-01-22 | 2019-08-09 | 上海海洋大学 | A kind of multiband microstrip antenna of S-band |
| CN109841950A (en) * | 2019-03-29 | 2019-06-04 | 钟祥博谦信息科技有限公司 | Wideband filtered antenna |
| CN209730179U (en) * | 2019-04-23 | 2019-12-03 | 南京林业大学 | A kind of fluting three frequency microstrip antenna |
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| CN113131208B (en) | 2023-06-16 |
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