CN210897621U - Novel ultra-wideband planar monopole antenna - Google Patents
Novel ultra-wideband planar monopole antenna Download PDFInfo
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- CN210897621U CN210897621U CN201921632953.4U CN201921632953U CN210897621U CN 210897621 U CN210897621 U CN 210897621U CN 201921632953 U CN201921632953 U CN 201921632953U CN 210897621 U CN210897621 U CN 210897621U
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- monopole antenna
- ground plate
- dielectric substrate
- microstrip feeder
- novel ultra
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Abstract
The utility model discloses a novel ultra wide band plane monopole antenna, including medium base plate, radiation paster, microstrip feeder and truncation ground plate, radiation paster and microstrip feeder all print in the front of medium base plate, truncation ground plate prints in the back of medium base plate; the radiation patch is in a structure combining an equilateral triangle and two semicircles; the microstrip feeder line is connected with the bottom of the radiation patch and correspondingly overlapped on the slot of the truncated ground plate; symmetrically arranged chamfered parts are formed on two sides of the top of the truncated grounding plate. The utility model discloses a novel ultra wide band plane monopole antenna has miniaturization, simple structure, radiation characteristic is good, the interference killing feature is strong and have the characteristic of omnidirectional radiation in the passband frequency channel.
Description
Technical Field
The utility model belongs to the technical field of wireless communication, especially, relate to a novel ultra wide band plane monopole antenna.
Background
The ultra-wideband technology has the advantages of high transmission rate, low power consumption, high resolution and the like, and is widely applied to the fields of radar remote sensing and military communication. Since 2002, the Federal Communications Commission (FCC) divides the 3.1-10.6GHz ultra-wideband frequency band into the field of civil communications, the ultra-wideband technology has attracted more important attention in the academic and commercial industries. The ultra-wideband antenna is used as a core component of a system, and the transmission quality of the whole system is directly influenced by the performance of the ultra-wideband antenna.
Microstrip antenna has advantages such as small, with low costs and simple structure, has obtained the wide application in industry this year. With the advance of technology, microstrip antennas have been used in a variety of fields including wireless local area networks and high-precision positioning.
In the reference "Experimental study of a printed ultra-wideband modified particulate anticanna.Kundu S.Microw OptTechnol Lett.2019; 1-6' provide a disc monopole ultra wide band antenna, the antenna adopts coplanar waveguide feed, can realize the working bandwidth of 3.1-20GHz, but the physical size is great, difficult to integrate.
SUMMERY OF THE UTILITY MODEL
Based on the not enough of above prior art, the utility model provides a technical problem lie in providing a simple structure, small in size, stable performance's novel ultra wide band plane monopole antenna, and radiation characteristic is good, and the interference killing feature is strong and has the characteristic of omnidirectional radiation in the passband frequency channel.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes: the utility model provides a novel ultra wide band plane monopole antenna, including medium base plate, radiation paster, microstrip feeder and truncation ground plate, radiation paster and microstrip feeder all print in the front of medium base plate, truncation ground plate prints in the back of medium base plate;
the radiation patch is in a structure combining an equilateral triangle and two semicircles;
the microstrip feeder line is connected with the bottom of the radiation patch and correspondingly overlapped on the slot of the truncated ground plate;
symmetrically arranged chamfered parts are formed on two sides of the top of the truncated grounding plate.
By last, the utility model discloses a novel ultra wide band plane monopole antenna adopts triangle-shaped and semicircular structure that combines together as the radiation paster, has realized ultra wide band antenna's miniaturization, simple structure, radiation characteristic are good, the interference killing feature is strong.
As a preferred implementation manner of the foregoing technical solution, the novel ultra-wideband planar monopole antenna provided by the embodiment of the present invention further includes part or all of the following technical features:
as an improvement of the above technical solution, in an embodiment of the present invention, the radiation patch is symmetrical about the central axis of the dielectric substrate, and the equilateral triangle is tightly combined with two semicircles symmetrical about the central axis of the dielectric substrate.
In an embodiment of the present invention, the slot of the truncated ground plate is located at the middle upper part of the truncated ground plate and located right below the microstrip feed line, and the width of the slot is greater than the width of the microstrip feed line; the length of the slot is 5-7 mm.
In addition, in the embodiment of the present invention, the side length of the equilateral triangle is 16.6mm, and the radius of the semicircle is 7.2-7.6 mm.
In an embodiment of the present invention, the microstrip feed line is a microstrip feed line having a characteristic impedance of 50 Ω, the length of the microstrip feed line is 17-18mm, and the width thereof is 2.6 mm.
As an improvement of the technical scheme, the horizontal length of the chamfer part of the truncated grounding plate is 10-11mm, and the vertical length of the chamfer part is 10-11 mm.
Therefore, the structure of the truncated ground plate is adopted, triangular corners are cut off from two sides of the top of the ground plate, and the rectangular groove is formed in the middle upper part of the ground plate, so that the structure can generate gradual change resonance characteristics, and the antenna can generate stable transition from one resonance mode to another resonance mode, thereby further improving the performance of the antenna.
In an embodiment of the present invention, the thickness of the dielectric substrate is 1.6mm, and the length and the width of the dielectric substrate are 30mm and 30mm, respectively.
Therefore, the planar structure is adopted, the size is small, the structure is compact, and the integration with the radio frequency front-end circuit is convenient to realize.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following detailed description is given in conjunction with the preferred embodiments, together with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
Fig. 1 is a structural diagram of a novel ultra-wideband planar monopole antenna according to a preferred embodiment of the present invention;
fig. 2 is a front structural view of the novel ultra-wideband planar monopole antenna of the present invention;
fig. 3 is a back structural view of the novel ultra-wideband planar monopole antenna of the present invention;
fig. 4 is a return loss curve diagram of the novel ultra-wideband planar monopole antenna of the present invention;
fig. 5 is a voltage standing wave ratio curve diagram of the novel ultra-wideband planar monopole antenna of the present invention;
fig. 6a and fig. 6b are radiation patterns of the novel ultra-wideband planar monopole antenna at different frequency points.
Detailed Description
Other aspects, features and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which form a part of the specification, illustrating by way of example the principles of the invention. In the referenced drawings, the same or similar components in different drawings are denoted by the same reference numerals.
As shown in fig. 1-6, the novel ultra-wideband planar monopole antenna of the present invention includes a dielectric substrate 10, a radiation patch 20, a microstrip feed line 30 and a truncated ground plate 40, wherein the radiation patch 20 and the microstrip feed line 30 are printed on the front surface of the dielectric substrate 10, and the truncated ground plate 40 is printed on the back surface of the dielectric substrate 10. The radiation patch 20 has a structure in which an equilateral triangle 21 and two semicircles 22 are combined.
In the preferred embodiment of the present invention, the radiation patch 20 is symmetrical about the central axis of the dielectric substrate 10, and the equilateral triangle 21 is tightly combined with two semi-circles 22 of the same size, which are located on both sides of the equilateral triangle 21 and symmetrical about the central axis of the dielectric substrate 10, wherein the side length of the equilateral triangle 21 is 16.6mm, and the radius of the semi-circle 22 is 7.2-7.6 mm.
The bottom of the radiation patch 20 is connected to a microstrip feed line 30 having a characteristic impedance of 50 Ω, and the microstrip feed line 30 has a length of 17-18mm and a width of 2.6 mm.
The truncated ground plate 40 with two cut-off corners 41 and slots 42 is printed on the lower side of the back surface of the dielectric substrate 10, the microstrip feed line 30 is located on the front surface of the dielectric substrate 10, and the position of the microstrip feed line corresponds to the position of the slots 42 of the truncated ground plate 40 on the back surface of the dielectric substrate 10, and is overlapped directly above the slots 42 of the truncated ground plate 40, the two cut-off corners 41 are located as shown in fig. 3, wherein the two cut-off corners 41 are symmetrically arranged, the cut-off corners 41 are right triangle, understandably, the cut-off corners 41 can also be arc-shaped cut-off corners or other shapes, etc. The horizontal length of the corner cutting part 41 is 10-11mm, the vertical length of the corner cutting part 41 is 10-11mm, and preferably, the horizontal length of the corner cutting part 41 is 11mm, and the vertical length is 11 mm.
The slot 42 of the truncated ground plate 40 is located as shown in fig. 3, the slot 42 is located at the middle upper part of the truncated ground plate 40 and is located right below the microstrip feed line 30, the width of the slot 42 is larger than the width of the microstrip feed line 30, the width of the slot is 3mm, the length of the slot 42 is 5-7mm, and the length of the slot 42 is preferably 6 mm. The adoption of the structure of truncating the grounding plate 40 can generate gradual-change resonance characteristics, so that the antenna generates smooth transition from one resonance mode to another resonance mode, and the performance of the antenna is further improved.
The ultra-wideband planar monopole antenna in the embodiment is printed on a dielectric substrate 10 made of FR4 epoxy resin material, the length, width and thickness of which are 30mm, 30mm and 1.6mm respectively, the relative dielectric constant of the dielectric substrate 10 is 4.4, and the dielectric loss tangent value is 0.024.
In order to explain further the utility model discloses a novel good performance of ultra wide band plane monopole antenna, it is right to utilize electromagnetism emulation software HFSS the utility model discloses the modeling simulation of radio frequency characteristic has been carried out.
Referring to fig. 4, the ultra-wideband antenna of the present invention has a bandwidth with return loss less than-10 dB of 1.9-11.1GHz, which completely meets the FCC specified ultra-wideband frequency band range.
Referring to fig. 5, the bandwidth of the ultra-wideband antenna with the voltage standing wave ratio less than 1.5 of the utility model is 2.1-10.5GHz, and the bandwidth less than 2 is 1.8-11.3 GHz.
Referring to fig. 6, a radiation pattern of the ultra-wideband antenna at 3GHz, 6GHz, and 8GHz in the embodiment of the present invention is provided. As can be seen from fig. 6(a), the E-plane pattern of the antenna exhibits directional radiation in the shape of a "8", and as can be seen from fig. 6(b), the H-plane pattern of the antenna is approximately circular, exhibits omnidirectional radiation characteristics, and the antenna has good omnidirectional radiation characteristics in the entire passband frequency band.
Above simulation analysis shows that the utility model discloses the bandwidth of antenna is 1.9-11.1GHz, and the work bandwidth satisfies 3.1-10.6 GHz's ultra wide band frequency channel scope completely, and has the omnidirectional radiation characteristic in the passband frequency channel for this antenna has bigger practical value.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood that the invention is not limited thereto, and that various modifications and changes can be made by those skilled in the art without departing from the principles of the invention.
Claims (7)
1. The utility model provides a novel ultra wide band plane monopole antenna, includes dielectric substrate (10), radiation paster (20), microstrip feeder (30) and truncates ground plate (40), its characterized in that:
the radiation patch (20) and the microstrip feeder line (30) are printed on the front surface of the dielectric substrate (10), and the truncated ground plate (40) is printed on the back surface of the dielectric substrate (10);
the radiation patch (20) is in a structure combining an equilateral triangle (21) and two semicircles (22);
the microstrip feed line (30) is connected with the bottom of the radiation patch (20) and correspondingly overlapped on the slot (42) of the truncated ground plate (40);
and symmetrically arranged chamfered parts (41) are formed on two sides of the top of the truncated ground plate (40).
2. The new ultra-wideband planar monopole antenna according to claim 1, characterized in that the radiating patch (20) is symmetrical about the central axis of the dielectric substrate (10), and the equilateral triangle (21) is tightly combined with two semicircles (22) symmetrical about the central axis of the dielectric substrate (10).
3. The novel ultra-wideband planar monopole antenna of claim 1, wherein: the slot (42) of the truncated ground plate (40) is positioned at the middle upper part of the truncated ground plate (40) and is positioned right below the microstrip feeder line (30), and the width of the slot (42) is greater than that of the microstrip feeder line (30);
the length of the open slot (42) is 5-7 mm.
4. The novel ultra-wideband planar monopole antenna of claim 2, wherein: the side length of the equilateral triangle (21) is 16.6mm, and the radius of the semicircle (22) is 7.2-7.6 mm.
5. The novel ultra-wideband planar monopole antenna of claim 1, wherein: the microstrip feeder line (30) is a microstrip feeder line with characteristic impedance of 50 omega, the length of the microstrip feeder line (30) is 17-18mm, and the width of the microstrip feeder line is 2.6 mm.
6. The novel ultra-wideband planar monopole antenna of claim 1, wherein: the horizontal length of the corner cutting part (41) of the truncated grounding plate (40) is 10-11mm, and the vertical length of the corner cutting part is 10-11 mm.
7. The novel ultra-wideband planar monopole antenna according to any of claims 1 to 6, characterized in that: the thickness of the dielectric substrate (10) is 1.6mm, and the length and the width of the dielectric substrate (10) are respectively 30mm and 30 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921632953.4U CN210897621U (en) | 2019-09-28 | 2019-09-28 | Novel ultra-wideband planar monopole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921632953.4U CN210897621U (en) | 2019-09-28 | 2019-09-28 | Novel ultra-wideband planar monopole antenna |
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| Publication Number | Publication Date |
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| CN210897621U true CN210897621U (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921632953.4U Expired - Fee Related CN210897621U (en) | 2019-09-28 | 2019-09-28 | Novel ultra-wideband planar monopole antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556629A (en) * | 2019-09-28 | 2019-12-10 | 辽宁工程技术大学 | novel ultra-wideband planar monopole antenna |
| WO2023159345A1 (en) * | 2022-02-22 | 2023-08-31 | 京东方科技集团股份有限公司 | Antenna |
-
2019
- 2019-09-28 CN CN201921632953.4U patent/CN210897621U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556629A (en) * | 2019-09-28 | 2019-12-10 | 辽宁工程技术大学 | novel ultra-wideband planar monopole antenna |
| WO2023159345A1 (en) * | 2022-02-22 | 2023-08-31 | 京东方科技集团股份有限公司 | Antenna |
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Granted publication date: 20200630 Termination date: 20210928 |