CN216597995U - Single trapped wave ultra wide band microstrip antenna - Google Patents
Single trapped wave ultra wide band microstrip antenna Download PDFInfo
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- CN216597995U CN216597995U CN202123429649.XU CN202123429649U CN216597995U CN 216597995 U CN216597995 U CN 216597995U CN 202123429649 U CN202123429649 U CN 202123429649U CN 216597995 U CN216597995 U CN 216597995U
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Abstract
The application relates to a single trapped wave ultra wide band microstrip antenna, include: the device comprises a radiation structure, a feed microstrip line, a resonator, a dielectric layer and a floor; the dielectric layer is of a rectangular structure; the radiation structure, the feed microstrip line and the resonator are loaded on the front surface of the dielectric layer; the floor is loaded on the back of the dielectric layer; the resonator is used for covering a notch of a WLAN frequency band; the floor is of a rectangular structure, the width of the floor is equal to that of the dielectric layer, and the height of the floor is equal to that of the feed microstrip line, so that three edges of the floor are superposed with three edges of the dielectric layer; an antenna slot is arranged on the top edge of the floor; the antenna slot is fixedly arranged in the center of the top edge of the floor; two ends of the top edge of the floor are provided with symmetrical arc-shaped cutting grooves. By adopting the antenna, the antenna can work in a wider frequency band, and is simple in structure, stable in radiation performance and easy to integrate.
Description
Technical Field
The application relates to the technical field of ultra wide band microstrip antennas, in particular to a single trapped wave ultra wide band microstrip antenna.
Background
With the development of wireless communication technology, the communication environment is increasingly complex, and in order to meet various communication requirements, a communication system is developed towards a wide frequency band, a large capacity and multiple functions. The antenna is an important device of a wireless communication system, all electromagnetic waves transmitted and received need to pass through the antenna, so that the quality of the antenna directly influences the overall performance of the wireless communication system. In order to comply with the development requirements of modern wireless communication technology, an ultra-wideband (UWB) communication system has the advantages of high transmission rate, high capacity, low detection, high resolution and the like, can just meet the requirements of the communication system on high capacity, multiple connection numbers and high speed, and is widely applied to the fields of automobile radars, high resolution imaging, internet of things, military communication and the like.
However, at present, in the ultra-wideband frequency range (3.1-10.1 GHz), the Wireless Local Area Network (WLAN) with the frequency band of 5.15-5.825GHz is also in the ultra-wideband definition range, and these narrowband interference signals inevitably cause large electromagnetic interference to the overall operation performance of the ultra-wideband, so that the ultra-wideband system must be designed to avoid the above frequency band, and then the antenna of the ultra-wideband communication system is required to have the notch characteristic of the above frequency band to suppress the interference of the interference frequency band to the operation of the ultra-wideband antenna.
Currently, ultra-wideband type antennas are classified into dielectric resonator antennas, printed monopole antennas, printed slot antennas, and planar monopole antennas. Among them, the microstrip patch antenna is considered to be the best choice for realizing an ultra-wideband antenna due to advantages of small volume, low cost, light weight, simple manufacture, easy integration, and the like. The notch implementation on the ultra-wideband microstrip antenna is the best means for suppressing the interference of the narrow-band signal of the WLAN in the ultra-wideband communication system at present. Therefore, in recent years, many achievements about ultra-wideband notch microstrip antennas emerge at home and abroad. The method for realizing trapped wave of the ultra-wideband microstrip antenna is mainly divided into three categories: etching different gaps and grooves in the antenna structure; adopting a fractal structure; a parasitic resonant cell is introduced.
In the prior art, an ultra wide band notch microstrip antenna mainly faces 2 problems:
1. the operating band of most ultra-wideband notch microstrip antennas is not wide enough.
2. Most ultra-wideband trapped wave microstrip antenna structures are complex in geometric shape, and unstable radiation patterns appear in a high-frequency band, which may further affect the working performance of the antenna.
In summary, the existing ultra-wideband microstrip antenna with a notch function still has certain limitations in frequency band range, structural performance flexibility, radiation characteristics and other aspects.
SUMMERY OF THE UTILITY MODEL
Therefore, there is a need to provide a single-notch ultra-wideband microstrip antenna, which can operate in a wider frequency band, has a simple structure, stable radiation performance, and is easy to integrate.
A single-notch ultra-wideband microstrip antenna comprising: the antenna comprises a radiation structure, a feed microstrip line, a resonator, a dielectric layer and a floor;
the dielectric layer is of a rectangular structure; the radiation structure, the feed microstrip line and the resonator are loaded on the front surface of the dielectric layer; the floor is loaded on the back of the dielectric layer;
the resonator is used for covering a notch of a WLAN frequency band;
the floor is of a rectangular structure, the width of the floor is equal to that of the dielectric layer, the height of the floor is equal to that of the feed microstrip line, and three sides of the floor are coincided with three sides of the dielectric layer.
In one embodiment, an antenna slot is provided on the top edge of the floor.
In one embodiment, the antenna slot is fixedly arranged at the center of the top edge of the floor.
In one embodiment, the floor board is provided with symmetrical arc-shaped cutting grooves at two ends of the top edge of the floor board.
In one embodiment, the radiation structure is a circular patch, and one end of the radiation structure is connected to the feed microstrip line.
In one embodiment, the number of the resonators is more than two, and the resonators are respectively loaded on two sides of the feed microstrip line.
In one embodiment, the distance between the resonator and the feed microstrip line is 0.1mm to 0.5 mm.
In one embodiment, the resonator has a square ring structure with an opening.
In one embodiment, the number of the resonators is more than one, and the resonators are loaded on the feeding microstrip line along the vertical direction.
Aiming at the technical problem that the working frequency Band of the existing Ultra-wideband micro-strip antenna with the trapped wave characteristic is not Wide enough, the single-trapped wave Ultra-wideband micro-strip antenna can effectively guide electromagnetic waves to propagate along a path of a gap with an arc edge by arranging a radiation patch with the arc edge and a floor and arranging an antenna slot and a grooving on the floor, so that the electromagnetic waves are gradually radiated to a space from the gap, the working performance of the antenna in the Ultra-wideband range of 1.37 GHz-11.82 GHz is realized, the working frequency Band exceeds the Ultra-wideband Band (3.1 GHz-10.6 GHz) specified Ultra-wideband range approved by the Federal communications Commission in the United states, a wider Ultra-wideband is realized, and the omni-direction is shown; the antenna has the advantages of simple structure, stable radiation performance, easy integration, wide application in multiple application fields such as wireless communication, Internet of things, radar and the like, and wide engineering application prospect.
Drawings
FIG. 1 is a schematic diagram of a front side of a single notch ultra wide band microstrip antenna in one embodiment;
figure 2 is a schematic diagram of the back side of a single notch ultra wide band microstrip antenna in one embodiment.
Description of the drawings:
the antenna comprises a radiation structure 1, a feed microstrip line 2, a resonator 3, a dielectric layer 4, a floor 5, an antenna slot 6 and a cutting slot 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
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 application.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.
In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality of groups" means at least two groups, e.g., two groups, three groups, etc., unless specifically defined otherwise.
In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; the connection can be mechanical connection, electrical connection, physical connection or wireless communication connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, technical solutions between the various embodiments of the present application may be combined with each other, but it must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should be considered to be absent and not within the protection scope of the present application.
As shown in fig. 1 to 2, the present application provides a single-notch ultra-wideband microstrip antenna, which in one embodiment includes: the antenna comprises a radiation structure 1, a feed microstrip line 2, a resonator 3, a dielectric layer 4 and a floor 5;
the medium layer 4 is of a rectangular structure; the radiation structure 1, the feed microstrip line 2 and the resonator 3 are loaded on the front surface of the dielectric layer 4; the floor 5 is loaded on the back of the medium layer 4;
the resonator 3 is used for covering a notch of a WLAN frequency band;
the floor 5 is in a rectangular structure, the width of the floor 5 is equal to that of the dielectric layer 4, the height of the floor 5 is equal to that of the feed microstrip line 2, and three sides of the floor 5 are overlapped with three sides of the dielectric layer 4.
In this embodiment, one end of the radiation structure 1 is connected to the feed microstrip line 2, and is made of metal.
The shape and size of the radiation structure 1 are not limited in this embodiment, and the radiation structure can be flexibly set according to actual conditions. For example: circular, elliptical-circular, etc. Preferably, the radiating structure is in the form of a circular sheet, consisting of circular metal patches 53.29mm in diameter, 0.018mm thick. The circular radiation structure can ensure that the overall performance of the antenna is not reduced, and ensure that the working frequency band and the radiation performance are not influenced.
The length of the feed microstrip line 2 is 16.42mm, the width is 7.47mm, and the feed microstrip line is made of metal material to realize feed. The long side of the feed microstrip line 2 can be placed vertically or horizontally.
The inner conductor at one end of the electromagnetic wave joint is welded on the feed microstrip line 2 along the vertical direction, and the pin at the other end is welded on the reverse side (floor) of the feed microstrip line 2.
The thickness of the dielectric layer 4 was 3.048mm, and the material F4B was used, the dielectric constant was 2.94, and the loss tangent was 0.001.
The working process of the embodiment is as follows: electromagnetic waves are transmitted into the feed microstrip line from the joint, transmitted to the radiation structure along two sides of the feed microstrip line and transmitted to the air along the arc-shaped side of the radiation structure, so that the waves are transited and converted into space radiation waves, and omnidirectional and broadband effects are generated.
Aiming at the technical problem that the working frequency Band of the existing Ultra-wideband micro-strip antenna with the trapped wave characteristic is not Wide enough, the single-trapped wave Ultra-wideband micro-strip antenna can effectively guide electromagnetic waves to propagate along a path of a gap with an arc edge by arranging a radiation patch with the arc edge and a floor and arranging an antenna slot and a grooving on the floor, so that the electromagnetic waves are gradually radiated to a space from the gap, the working performance of the antenna in the Ultra-wideband range of 1.37 GHz-11.82 GHz is realized, the working frequency Band exceeds the Ultra-wideband Band (3.1 GHz-10.6 GHz) specified Ultra-wideband range approved by the Federal communications Commission in the United states, a wider Ultra-wideband is realized, and the omni-direction is shown; the antenna has the advantages of simple structure, stable radiation performance, easy integration, wide application in multiple application fields such as wireless communication, Internet of things, radar and the like, and wide engineering application prospect.
In one embodiment, the top edge of the floor 5 is provided with an antenna slot 6, and the two ends of the top edge of the floor 5 are provided with symmetrical arc-shaped cutting slots 7.
In the present embodiment, the floor 5 is made of metal.
The shape, position and size of the antenna slot 6 are not limited in this embodiment, and the antenna slot can be specifically set according to actual conditions and needs. For example: rectangular groove, square groove, arc groove, special-shaped groove, etc. Another example is: the antenna slot is arranged on the left of the top edge, and the antenna slot is arranged in the center of the top edge.
Preferably, the antenna slot 6 is an arc-shaped slot and is fixedly arranged in the center of the top edge of the floor 5.
The present embodiment does not limit the shape and size of the arc-shaped cutting slot 7, and can be arranged according to the actual situation and needs. For example: 1/4 arc, elliptical arc, parabolic arc, general arc, etc.
Preferably, the metal floor 5 is formed by cutting 1/4 arc corner cuts with a radius of 5mm on both sides and forming an antenna slot with a length of 6mm and a width of 5mm in the center of the floor, respectively, from a rectangular patch with a length of 60mm and a width of 15.81 mm.
The arc-shaped cutting groove is periodically symmetrical, is an artificial symmetrical metamaterial structure, can better expand frequency bands and improve impedance matching.
By means of grooving in the center of the floor and grooving on two sides, the trend of surface current can be guided, impedance matching is obviously improved, accordingly, the impedance bandwidth of the antenna is improved, and the working performance of the super-bandwidth of the working frequency band in the range of 1.37 GHz-11.82 GHz is achieved.
In one embodiment, the resonator 3 is a split ring resonator. The split ring resonator is a non-complementary non-metallic ring resonator. By properly sizing the split ring, the notch frequency can be made to fall within the WLAN band.
The concrete shape, size, position, direction and the quantity of this application do not restrict the split ring resonator, specifically can set up according to actual conditions is nimble. For example: square ring, wave, etc. Another example is: the open resonant ring is loaded on two sides of the feed microstrip line, and the open resonant ring is loaded on the feed microstrip line along the vertical direction. Another example is: the opening of the open resonator ring faces the feed microstrip line, the opening of the open resonator ring faces the radiating structure, and the like. Another example is: the number of the split resonance rings is two, four, etc.
Preferably, more than two open resonant rings are loaded on the feeding microstrip line along the vertical direction and used for covering the notch of the WLAN frequency band.
Preferably, there are two split ring resonators, and two split ring resonators are the square that the size is the same, and symmetrical loading is in the both sides of feed microstrip line, and the opening all sets up towards feed microstrip line promptly face to face, and the internal diameter is 5mm, and the external diameter is 7 mm.
The distance between the open resonant ring and the feed microstrip line ranges from 0.1mm to 0.5 mm. Preferably, the distance between the open resonator loop and the feed microstrip line is 0.2 mm.
When the distance between the open-ended resonant ring and the feed microstrip line is 0.2mm, the coupling effect can be enhanced, the trapped wave can be more obvious, and the performance and the processing of the whole antenna are facilitated.
The opening resonant ring can make the current of antenna concentrate on around the opening resonant ring, can strengthen the intensity of resonance through loading two opening resonant rings of the same size, and the effect of constraint surface current also can be more obvious.
The notch of the antenna is realized by introducing a resonator unit to generate a notch or changing the current distribution on a radiation unit on the antenna. Due to the arrangement of the open resonant ring, the interference of narrow-band spectrum signals in multiple aspects can be well inhibited, the signal interference of the WLAN narrow-band spectrum signals on an ultra-wideband communication system is effectively inhibited, and the notch of the antenna in a WLAN frequency band is realized.
In the embodiment, the ultra-wideband (1.37 GHz-11.82 GHz) of the antenna is realized by the microstrip antenna of the circular patch and the mode of slotting on the floor, meanwhile, the single notch in the WLAN frequency band is realized by loading the open resonant rings with the same size on two sides of the feed microstrip line, the gain of the antenna at the notch frequency point in the WLAN frequency band is extremely low, the radiation performance is almost completely inhibited, and the radiation pattern is stable; moreover, the antenna has the advantages of simple geometric shape, stable radiation performance, low cost and easy integration, and can be widely applied to the fields of ultra-wideband wireless communication, radar imaging, Internet of things and the like.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A single-notch ultra-wideband microstrip antenna, comprising: the antenna comprises a radiation structure, a feed microstrip line, a resonator, a dielectric layer and a floor;
the dielectric layer is of a rectangular structure; the radiation structure, the feed microstrip line and the resonator are loaded on the front surface of the dielectric layer; the floor is loaded on the back of the dielectric layer;
the resonator is used for covering a notch of a WLAN frequency band;
the floor is of a rectangular structure, the width of the floor is equal to that of the dielectric layer, the height of the floor is equal to that of the feed microstrip line, and three edges of the floor are overlapped with three edges of the dielectric layer.
2. The ultra-wideband microstrip antenna of claim 1 wherein an antenna slot is provided on the top edge of the floor.
3. The ultra-wideband microstrip antenna of claim 2 wherein the antenna slot is fixedly disposed at a central location of the top edge of the floor.
4. The ultra-wideband microstrip antenna according to claim 3 wherein the floor has symmetrical arc-shaped slots at both ends of the top edge.
5. The ultra-wideband microstrip antenna according to any of claims 1 to 4 wherein the radiating structure is in the form of a circular patch and one end of the radiating structure is connected to the feed microstrip line.
6. The ultra-wideband microstrip antenna according to any of claims 1 to 4, wherein the number of the resonators is two or more, and the resonators are respectively loaded on both sides of the feed microstrip line.
7. The ultra-wideband microstrip antenna of claim 6, wherein the resonator is at a distance from the feed microstrip line in the range 0.1mm to 0.5 mm.
8. The ultra-wideband microstrip antenna according to any of claims 1 to 4 wherein the resonator is a square ring structure provided with an opening.
9. The ultra-wideband microstrip antenna according to any of claims 1 to 4 wherein the number of resonators is more than one and is loaded on the feed microstrip line in the vertical direction.
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| CN202123429649.XU CN216597995U (en) | 2021-12-31 | 2021-12-31 | Single trapped wave ultra wide band microstrip antenna |
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| CN202123429649.XU CN216597995U (en) | 2021-12-31 | 2021-12-31 | Single trapped wave ultra wide band microstrip antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114744400A (en) * | 2022-06-13 | 2022-07-12 | 湖南大学 | Miniaturized ultra wide band trapped wave antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114744400A (en) * | 2022-06-13 | 2022-07-12 | 湖南大学 | Miniaturized ultra wide band trapped wave antenna |
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