CN217009553U - Dual-beam antenna and electronic equipment - Google Patents
Dual-beam antenna and electronic equipment Download PDFInfo
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- CN217009553U CN217009553U CN202220306407.7U CN202220306407U CN217009553U CN 217009553 U CN217009553 U CN 217009553U CN 202220306407 U CN202220306407 U CN 202220306407U CN 217009553 U CN217009553 U CN 217009553U
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Abstract
The utility model discloses a dual-beam antenna and electronic equipment, which comprise a dielectric substrate, a coplanar waveguide and at least two metal units, wherein the dielectric substrate comprises a first surface and a second surface which are opposite, and the coplanar waveguide comprises a first ground wire, a second ground wire and a signal wire arranged between the first ground wire and the second ground wire; the coplanar waveguide is arranged on the first surface, and the at least two metal units are arranged on the second surface; the at least two metal units are periodically distributed; the excitation amplitude between the signal line and the first ground line is the same as the excitation amplitude between the signal line and the second ground line, and the excitation phase between the signal line and the first ground line is different from the excitation phase between the signal line and the second ground line by 180 °. The utility model can realize the dual-beam antenna without additionally using a beam synthesis network and a device.
Description
Technical Field
The present invention relates to the field of antenna technologies, and in particular, to a dual-beam antenna and an electronic device.
Background
An antenna is one of the most important components of a communication system. The current 5G mobile communication standard includes sub-6G and millimeter wave bands, which usually use MIMO multi-antenna systems or antenna arrays to achieve high gain, narrow beam and high communication capacity. The multi-beam antenna technology provides a solution for realizing high gain and large capacity in order to meet the requirements of continuously increased user quantity and low cost and miniaturization of the handheld terminal equipment.
The implementation of multi-beam antennas can be broadly divided into three basic approaches: (1) the reflector and the feed source form a reflecting surface antenna; (2) focusing the energy of electromagnetic waves radiated by a feed source by using a lens, wherein the relative position of the feed source and a focus changes to form point beams pointing to different directions; (3) the antenna array and the beam forming network are used for forming a multi-beam array antenna, field superposition is realized by changing the excitation amplitude and the phase of the beam forming network, and the common beam forming network is provided with a Butler matrix.
The existing multi-beam forming methods have respective performance advantages, but separate feed sources and beam forming networks are needed, and the problems of complex realization structure and large volume exist.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: provided are a dual-beam antenna and an electronic device, which can realize a dual-beam antenna without additionally using a beam forming network and a beam forming device.
In order to solve the technical problems, the utility model adopts the technical scheme that: a dual-beam antenna comprises a dielectric substrate, a coplanar waveguide and at least two metal units, wherein the dielectric substrate comprises a first surface and a second surface which are opposite, and the coplanar waveguide comprises a first ground wire, a second ground wire and a signal wire arranged between the first ground wire and the second ground wire; the coplanar waveguide is arranged on the first surface, and the at least two metal units are arranged on the second surface; the at least two metal units are periodically distributed; the excitation amplitude between the signal line and the first ground line is the same as the excitation amplitude between the signal line and the second ground line, and the excitation phase between the signal line and the first ground line is different from the excitation phase between the signal line and the second ground line by 180 °.
Further, the projections of the first ground line, the second ground line and the signal line on the dielectric substrate intersect and are perpendicular to the projections of the metal units on the dielectric substrate.
Further, the length of the coplanar waveguide is 240 mm; the width of the first ground wire and the width of the second ground wire are both 30mm, and the width of the signal wire is 12 mm; and the distances between the signal wire and the first ground wire and between the signal wire and the second ground wire are both 3 mm.
Further, the dielectric substrate had a dielectric constant of 3, a loss tangent of 0.001 and a thickness of 1.52 mm.
Further, the metal units are metal grid bars, and the length and the width of each of the at least two metal units are both 78mm and 3 mm.
Further, the number of the metal units is 40, and the distance between two adjacent metal units is 3 mm.
The utility model also proposes an electronic device comprising a dual-beam antenna as described above.
The utility model has the beneficial effects that: the radiation mode of the planar coplanar waveguide can be excited by arranging the metal units which are periodically distributed, so that the planar coplanar waveguide can periodically radiate energy in the transmission process; by introducing differential excitation into the input port of the planar coplanar waveguide, differential excitation is formed on each metal unit, and the periodically distributed metal units are similar to a series-fed array antenna, so that two beams are finally synthesized. The utility model can realize the dual-beam antenna without additionally using a beam forming network and devices, is favorable for realizing plane integration with a microwave system and improves the system integration level.
Drawings
Fig. 1 is a schematic structural diagram of a dual-beam antenna according to a first embodiment of the present invention;
fig. 2 is a schematic side view of a dual-beam antenna according to a first embodiment of the present invention;
fig. 3 is a scanning pattern of the dual-beam antenna according to the first embodiment of the present invention.
Description of the reference symbols:
1. a dielectric substrate; 2. a coplanar waveguide; 3. a metal unit;
21. a first ground line; 22. a second ground line; 23. and a signal line.
Detailed Description
In order to explain technical contents, objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, a dual-beam antenna includes a dielectric substrate, a coplanar waveguide and at least two metal units, wherein the dielectric substrate includes a first surface and a second surface opposite to each other, the coplanar waveguide includes a first ground, a second ground and a signal line disposed between the first ground and the second ground; the coplanar waveguide is arranged on the first surface, and the at least two metal units are arranged on the second surface; the at least two metal units are periodically distributed; the excitation amplitude between the signal line and the first ground line is the same as the excitation amplitude between the signal line and the second ground line, and the excitation phase between the signal line and the first ground line is different from the excitation phase between the signal line and the second ground line by 180 °.
From the above description, the beneficial effects of the present invention are: the dual-beam antenna can be realized without additionally using a beam forming network and devices, and is favorable for realizing planar integration with a microwave system and improving the system integration level.
Further, the projections of the first ground line, the second ground line and the signal line on the dielectric substrate intersect and are perpendicular to the projections of the metal units on the dielectric substrate.
From the above description, the radiation mode of the planar coplanar waveguide can be fully excited, and the antenna performance can be optimized.
Further, the length of the coplanar waveguide is 240 mm; the width of the first ground wire and the width of the second ground wire are both 30mm, and the width of the signal wire is 12 mm; and the distances between the signal wire and the first ground wire and between the signal wire and the second ground wire are both 3 mm.
Further, the dielectric substrate had a dielectric constant of 3, a loss tangent of 0.001 and a thickness of 1.52 mm.
Further, the metal units are metal grid bars, and the length and the width of each of the at least two metal units are both 78mm and 3 mm.
Further, the number of the metal units is 40, and the distance between two adjacent metal units is 3 mm.
From the above description, the operating frequency of the antenna can be adjusted by adjusting the routing parameters of the coplanar waveguide, the electrical parameters of the dielectric substrate and the period of the metal unit.
The utility model also proposes an electronic device comprising a dual-beam antenna as described above.
Example one
Referring to fig. 1-3, a first embodiment of the present invention is: a dual-beam antenna can be applied to a 5G communication system.
As shown in fig. 1, the dielectric substrate 1, the coplanar waveguide 2 and at least two metal units 3 are included, the dielectric substrate 1 includes a first surface and a second surface which are opposite, the coplanar waveguide 2 includes a first ground wire 21, a second ground wire 22 and a signal wire 23 arranged between the first ground wire 21 and the second ground wire 22, and the first ground wire 21, the second ground wire 22 and the signal wire 23 are parallel; the coplanar waveguide 2 is arranged on the first face; at least two metal units 3 are arranged on the second surface and are distributed periodically; the projections of the first ground line 21, the second ground line 22 and the signal line 23 on the dielectric substrate 1 intersect and are perpendicular to the projections of the metal units 3 on the dielectric substrate 1, respectively. The excitation amplitude between the signal line 23 and the first ground line 21 is the same as the excitation amplitude of the signal line 23 and the second ground line 22, and the excitation phase between the signal line 23 and the first ground line 21 is different from the excitation phase between the signal line 23 and the second ground line 22 by 180 °.
The radiation main body of the dual-beam antenna of the embodiment is composed of the coplanar waveguide and the metal units which are respectively arranged on two sides of the dielectric substrate, the fundamental mode of the planar coplanar waveguide is a slow wave mode and is a transmission mode rather than a radiation mode, and the radiation mode of the planar coplanar waveguide can be excited by arranging the metal units which are periodically distributed, so that the metal units can periodically radiate energy in the transmission process.
The key point of realizing the dual-beam is that differential excitation is introduced into an input port of the planar coplanar waveguide, namely, the excitation amplitude between a signal line and two ground lines is the same, but the excitation phase is different by 180 degrees, so that differential excitation is formed on each metal unit, and the periodically distributed metal units are similar to an array antenna with series feed, and finally two beams are synthesized.
In the present embodiment, the length of the coplanar waveguide 2 is 240mm, that is, the lengths of the first ground line 21, the second ground line 22 and the signal line 23 are 240 mm; the widths g of the first ground line 21 and the second ground line 22 are both 30mm, and the width w of the signal line 23 is 12 mm; the distance s between the signal line 23 and the first and second ground lines 21 and 22 is 3mm each. The metal units 4 are strip-shaped, that is, the metal units 4 are metal grid bars. The number of the metal grid bars is 40, the length of each metal grid bar is 78mm, and the width of each metal grid bar is 3 mm; the distance between two adjacent metal grids is 3 mm.
The dielectric substrate 1 selected in this embodiment has a model of Rogers RO3003, a dielectric constant of 3, a loss tangent of 0.001, and a thickness of 1.52 mm. In other embodiments, other equivalent types of dielectric substrates can be used.
Further, the coplanar waveguide 2 and the metal unit 3 in the present embodiment can be obtained by coating a metal layer on the dielectric substrate 1, as shown in fig. 2.
Fig. 3 is a scanning pattern of the dual-beam antenna based on the planar coplanar waveguide according to the present embodiment, and it can be seen from the figure that the dual-beam antenna can be implemented by using differential feeding of the planar coplanar waveguide.
The embodiment is based on the structural design of the planar coplanar waveguide, is beneficial to realizing planar integration with a microwave system and improving the system integration level; the method for realizing the dual beams is novel, does not need to additionally use a beam synthesis network and devices, and has cost advantage.
In summary, the dual-beam antenna and the electronic device provided by the utility model use the planar coplanar waveguide, and due to the design of the coplanar structure, the planar integration with the microwave system is more facilitated, and the system integration level is improved; the radiation mode of the planar coplanar waveguide can be excited by arranging the metal units which are periodically distributed, so that the planar coplanar waveguide can periodically radiate energy in the transmission process; by introducing differential excitation into the input port of the planar coplanar waveguide, differential excitation is formed on each metal unit, and the periodically distributed metal units are similar to a series-fed array antenna, so that two beams are finally synthesized. The utility model can realize the dual-beam antenna without additionally using a beam synthesis network and a device.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (7)
1. A dual-beam antenna is characterized by comprising a dielectric substrate, a coplanar waveguide and at least two metal units, wherein the dielectric substrate comprises a first surface and a second surface which are opposite, and the coplanar waveguide comprises a first ground wire, a second ground wire and a signal wire arranged between the first ground wire and the second ground wire; the coplanar waveguide is arranged on the first surface, and the at least two metal units are arranged on the second surface; the at least two metal units are periodically distributed; the excitation amplitude between the signal line and the first ground line is the same as the excitation amplitude between the signal line and the second ground line, and the excitation phase between the signal line and the first ground line is different from the excitation phase between the signal line and the second ground line by 180 °.
2. The dual beam antenna of claim 1 wherein the projections of the first ground, second ground and signal line on the dielectric substrate intersect and are perpendicular to the projections of the metal elements on the dielectric substrate, respectively.
3. Dual beam antenna as claimed in claim 1, wherein the length of the coplanar waveguide is 240 mm; the width of the first ground wire and the width of the second ground wire are both 30mm, and the width of the signal wire is 12 mm; and the distances between the signal wire and the first ground wire and between the signal wire and the second ground wire are both 3 mm.
4. The dual beam antenna of claim 1 wherein the dielectric substrate has a dielectric constant of 3, a loss tangent of 0.001, and a thickness of 1.52 mm.
5. The dual beam antenna of claim 1 wherein said metal elements are metal grids and said at least two metal elements are each 78mm in length and 3mm in width.
6. The dual beam antenna of claim 1 wherein the number of metal elements is 40 and the distance between two adjacent metal elements is 3 mm.
7. An electronic device comprising the dual beam antenna of any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220306407.7U CN217009553U (en) | 2022-02-15 | 2022-02-15 | Dual-beam antenna and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220306407.7U CN217009553U (en) | 2022-02-15 | 2022-02-15 | Dual-beam antenna and electronic equipment |
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| CN217009553U true CN217009553U (en) | 2022-07-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114530696A (en) * | 2022-02-15 | 2022-05-24 | 深圳市汇芯通信技术有限公司 | Dual-beam antenna and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114530696A (en) * | 2022-02-15 | 2022-05-24 | 深圳市汇芯通信技术有限公司 | Dual-beam antenna and electronic equipment |
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Address after: 518000, Building 4, 1001, Shenzhen New Generation Industrial Park, No. 136 Zhongkang Road, Meidu Community, Meilin Street, Futian District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Huixin Communication Technology Co.,Ltd. Address before: 518000 2701, building T2, Shenye Shangcheng (South District), No. 5001, Huanggang Road, Lianhua Yicun community, Huafu street, Futian District, Shenzhen, Guangdong Province Patentee before: Shenzhen Huixin Communication Technology Co.,Ltd. |