CN218867381U - Antenna radiator, antenna and electronic equipment - Google Patents
Antenna radiator, antenna and electronic equipment Download PDFInfo
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- CN218867381U CN218867381U CN202223405761.4U CN202223405761U CN218867381U CN 218867381 U CN218867381 U CN 218867381U CN 202223405761 U CN202223405761 U CN 202223405761U CN 218867381 U CN218867381 U CN 218867381U
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Abstract
According to the embodiment of the present invention, an antenna radiator, an antenna and an electronic device are provided, wherein the antenna radiator includes a first radiation portion and a second radiation portion; a feed part and a grounding part are also arranged on one side of the second radiation part away from the first radiation part; the second radiation part comprises a first sub-radiation part and a second sub-radiation part connected with the first sub-radiation part; the outside of first sub-radiation portion is equipped with first corner cut, and the outside of second sub-radiation portion is equipped with the second corner cut. The second sub-radiating part of the antenna radiator is used as a main radiating area, and the first radiator and the first sub-radiating part can enable the antenna radiator to have better resonance depth and matching impedance, so that the performance of the antenna radiator is improved, a radio frequency circuit is omitted, the structure of the antenna radiator is simplified, and batch production of the antenna radiator is facilitated. And the size of the antenna radiator is smaller, which is more beneficial to realizing the miniaturization and integration of the antenna and reducing the area of the clearance area.
Description
Technical Field
The utility model relates to a wireless communication field particularly relates to an antenna radiator, antenna and electronic equipment.
Background
uwb (Ultra Wideband) is a carrier-free communication technology that transmits data using non-sinusoidal wave pulses on the order of nanoseconds to picoseconds. The uwb has the advantages of strong anti-interference performance, high transmission rate, extremely wide bandwidth, low power consumption, low transmission power, low cost and the like, and is widely applied to local area networks and digital keys. And the uwb antenna is a core component for implementing uwb technology.
At present, the current uwb antenna is mostly external antenna, that is to say that electronic equipment and uwb mutual independence, just so need reserve the connector interface on electronic equipment to realize being connected with the uwb antenna, but external uwb can increase electronic equipment's overall dimension, is unfavorable for electronic equipment's miniaturization.
In order to solve the above problems, some uwb antennas adopt a patch structure, but the performance of the uwb antenna is poor, and a radio frequency circuit needs to be added for adjustment, so that the antenna structure of the uwb antenna is more complex. In addition, in some implementations, the uwb antenna is an elongated inverted-F antenna, but the elongated inverted-F antenna has poor radiation performance and requires a large clearance area, which is not favorable for miniaturization and integration of the antenna.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, an embodiment of the present invention provides an antenna radiator, an antenna and an electronic device.
In a first aspect, an embodiment of the present invention provides an antenna radiator, including a first radiation portion and a second radiation portion connected to the first radiation portion; a feeding part and a grounding part are further arranged on one side, far away from the first radiating part, of the second radiating part;
the second radiation part comprises a first sub-radiation part and a second sub-radiation part connected with the first sub-radiation part; the outside of first sub-radiation portion is equipped with first corner cut, the outside of second sub-radiation portion is equipped with the second corner cut.
Optionally, the first radiating portion is rectangular.
Optionally, the ground portion is disposed on a first oblique edge, and the feeding portion is disposed between the first oblique edge and a second oblique edge; the first bevel edge is a bevel edge formed by the first chamfer angle, and the second bevel edge is a bevel edge formed by the second chamfer angle.
Optionally, a sum of a width of the first radiation portion, a width of the second radiation portion, and a length of the second sub-radiation portion is a quarter of a wavelength corresponding to a resonant frequency of the antenna radiator.
Optionally, the first sub-radiation portion and the second sub-radiation portion are of a symmetrical structure.
Optionally, the included angle between the first oblique edge and the length direction of the first radiation portion is an acute angle, and the included angle between the second oblique edge and the length direction of the second radiation portion is also an acute angle.
Optionally, an included angle between the first oblique edge and the length direction of the first radiation portion is 25 ° to 45 °, and an included angle between the second oblique edge and the length direction of the second radiation portion is 25 ° to 45 °.
Optionally, the first sub-radiation portion, the second sub-radiation portion, the first radiation portion, the ground portion, and the feeding portion are integrally formed.
In a second aspect, the embodiment of the present invention provides an antenna, including substrate and the above-mentioned antenna radiator, the antenna radiator sets up on the surface of substrate, still be equipped with the ground plate on the substrate, the ground portion of antenna radiator with the ground plate is connected.
In a third aspect, an embodiment of the present invention provides an electronic device, including the above antenna.
According to the embodiment of the utility model provides an antenna radiator, antenna and electronic equipment, the sub-radiating part of second of this antenna radiator is as main radiation area, and first irradiator and first sub-radiating part can make antenna radiator have better depth of resonance and match impedance to improve antenna radiator's performance, just so saved radio frequency circuit, simplified antenna radiator's structure, also be favorable to antenna radiator's batch production. And the size of the antenna radiator is smaller, which is more beneficial to realizing the miniaturization and integration of the antenna and reducing the area of the clearance area.
Drawings
The following drawings of the present invention are used herein as part of the embodiments of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention.
In the drawings:
fig. 1 is a block diagram of an antenna radiator according to an alternative embodiment of the present invention;
fig. 2 is a schematic size diagram of an antenna radiator according to an alternative embodiment of the present invention;
fig. 3 is a graph of S11 curves for an antenna according to an alternative embodiment of the present invention;
fig. 4 is a graph of S11 for an antenna according to another alternative embodiment of the present invention.
Description of reference numerals:
10-first radiating part, 20-second radiating part, 201-first sub-radiating part, 2011-first oblique side, 202-second sub-radiating part, 2021-second oblique side, 30-grounding part, 40-feeding part and 50-grounding plate.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.
In a first aspect, as shown in fig. 1 and fig. 2, an embodiment of the present invention provides an antenna radiator, including a first radiation portion 10 and a second radiation portion 20 connected to the first radiation portion 10; a feeding part 40 and a grounding part 30 are arranged on one side of the second radiation part 20 far away from the first radiation part 10; the second radiation part 20 includes a first sub-radiation part 201 and a second sub-radiation part 202 connected to the first sub-radiation part 201; the outer side of the first sub-radiation part 201 is provided with a first cutting angle, and the outer side of the second sub-radiation part 202 is provided with a second cutting angle.
The first radiation portion 10, the second radiation portion 20 (i.e., the first sub-radiation portion 201 and the second sub-radiation portion 202), the ground portion 30, and the power feed portion 40 may be made of a conductive material such as silver, aluminum, iron, zinc, or a metal alloy, preferably a conductive material with low loss such as copper or silver, or other materials may be used, which is not limited in this application.
The first corner cut of the first sub-radiating portion 201 enables the first sub-radiating portion 201 to form an approximately triangular structure, and similarly, the second corner cut of the second sub-radiating portion 202 enables the second sub-radiating portion 202 to form an approximately triangular structure, so that the antenna radiator has better performance, and the space occupied by the antenna radiator can be further reduced. In addition, by adjusting the length L3 of the first sub radiating portion 201, the adjustment of the resonant depth and the bandwidth of the antenna radiator can be achieved while the other dimensions remain unchanged, while the resonant frequency of the antenna radiator is substantially unchanged.
In this embodiment, the second sub-radiating portion 202 of the antenna radiator is used as a main radiating area, and the length L2 of the second sub-radiating portion 202 is adjusted to adjust the operating frequency of the antenna radiator, so that the required operating frequency of the antenna radiator can be obtained, that is, in the case that the other dimensions are not changed, as the length L2 of the second sub-radiating portion 202 increases, the resonant frequency shifts to a low frequency, and the bandwidth tends to become narrower gradually. The first radiation part 201 and the first sub-radiation part 201 can enable the antenna radiator to have better resonance depth and matching impedance, so that the performance of the antenna radiator is improved, a radio frequency circuit is omitted, the structure of the antenna radiator is simplified, and the mass production of the antenna radiator is facilitated. And the size of the antenna radiator is smaller, which is more beneficial to realizing the miniaturization and integration of the antenna and reducing the area of the clearance area.
Specifically, as shown in fig. 1 and 2, the first radiation portion 10 is rectangular.
The first radiating part 10, which is rectangular in shape, may serve as an auxiliary matching adjustment area, i.e. a small adjustment of the resonance depth of the antenna radiator is achieved by adjusting the width d2 of the rectangle, while the resonance center frequency of the antenna radiator remains unchanged, i.e. the operating frequency of the antenna radiator remains unchanged. And the first radiation part 10 is of a rectangular structure, so that a round angle structure is avoided, the requirement on the antenna radiator processing technology is reduced, and an elliptical clearance area is not required to be reserved on the circuit board for placing the antenna radiator.
Further, as shown in fig. 1 and 2, ground portion 30 is provided on first oblique side 2011, and power feeding portion 40 is provided between first oblique side 2011 and second oblique side 2021; the first oblique side 2011 is an oblique side formed by the first chamfer, and the second oblique side 2021 is an oblique side formed by the second chamfer.
Under the condition that other sizes are not changed, the distance L1 between the grounding part 30 and the feeding part 40 is adjusted, so that the resonance depth can be greatly adjusted, the resonance center frequency of the antenna radiator is kept unchanged, namely the working frequency of the antenna radiator is kept unchanged, and the resonance center frequency of the antenna radiator is not influenced in the process of adjusting the resonance depth.
In addition, by adjusting the sum d1 of the widths of the first and second radiation portions 10 and 20 and the distance L1 between the ground portion 30 and the feeding portion 40, the input impedance of the antenna radiator can be adjusted, thereby optimizing the bandwidth and the radiation efficiency. In a specific application, the distance L1 between the grounding portion 30 and the feeding portion 40 is mainly adjusted, so that the performance and the center frequency resonance depth matched with the feeding portion 40 are obtained.
As shown in fig. 1 and 2, an angle α between the first oblique side 2011 and the longitudinal direction of the first radiating portion 10 is acute, and an angle β between the second oblique side 2021 and the longitudinal direction of the second radiating portion 20 is also acute.
The shapes of the first sub-radiation portion 201 and the second sub-radiation portion 202 are adjusted by adjusting the angle of the included angle α between the first inclined edge 2011 and the length direction of the first radiation portion 10 and the angle of the included angle β between the two inclined edges and the length direction of the second radiation portion 20, so as to meet the requirements of different substrates.
It should be noted that after adjusting the angle α between the first oblique side 2011 and the longitudinal direction of the first radiating portion 10 and the angle β between the two oblique sides and the longitudinal direction of the second radiating portion 20, the resonant frequency of the antenna radiator changes, and in order to keep the resonant frequency of the antenna radiator unchanged, the distance L1 between the ground portion 30 and the feeding portion 40 and/or the length L3 of the first sub-radiating portion 201 need to be adjusted.
Specifically, as shown in fig. 1 and 2, an angle α between the first oblique side 2011 and the longitudinal direction of the first radiating portion 10 is 25 ° to 45 °, and an angle β between the second oblique side 2021 and the longitudinal direction of the second radiating portion 20 is 25 ° to 45 °.
Further, as shown in fig. 1 and 2, the sum of the width d2 of the first radiation part 10, the width d3 of the second radiation part 20, and the length L2 of the second sub-radiation part 202 is one quarter of the resonant frequency corresponding wavelength λ g of the antenna radiator, so that the antenna radiator has a smaller size, a larger bandwidth, and better directivity.
Further, as shown in fig. 1, the first sub-radiating portion 201 and the second sub-radiating portion 202 are symmetrical.
The first radiation part 10 is symmetrical to the second radiation part 20, that is, the first radiation part 10 and the second radiation part 20 have the same size.
Further, as shown in fig. 1, the first sub-radiation section 201, the second sub-radiation section 202, the first radiation section 10, the ground section 30, and the power feed section 40 are integrally formed.
The antenna radiator can be manufactured by adopting a stamping process, so that the manufacturing process can be simplified, the batch production can be realized, and the stability and the reliability of the connection of all parts are improved by adopting an integrated structure.
In a second aspect, the embodiment of the present invention provides an antenna, including a substrate and the antenna radiator, the antenna radiator is disposed on a surface of the substrate, the substrate is further provided with a ground plate 50, and the ground portion 30 of the antenna radiator is connected to the ground plate 50.
The shape of the substrate is not limited, and may be a regular shape, such as a rectangle, or an irregular shape, such as a polygon. Specifically, the substrate may be a printed substrate made of bismaleimide triazine resin or glass fiber reinforced oxygen resin, or may be a flexible sheet substrate made of polyimide. In some preferred implementations, the substrate is an FR4 dielectric substrate. The FR4 material has the advantages of stable electrical insulation, good flatness, smooth surface, no pit and standard thickness tolerance, has good electrical characteristics and is less influenced by the environment. The feeding section 40 may be fed by a microstrip line, and in some implementations, the resistance of the microstrip line is 50 Ω.
In general, the larger the area of the ground plate 50, the more beneficial the antenna, and in the present application, the size of the docking ground plate 50 is not strictly required, so that the ground plate 50 can be configured according to actual requirements, thereby improving the adaptability of the ground plate 50 and reducing the requirements for docking the ground plate 50.
In some implementations, the antenna with the above structure is simulated by using simulation software, specifically as shown in fig. 3, the operating center frequency point of the antenna radiator is 8ghz, and the bandwidth width of s11< -10dB is 4GHz. After the length L2 of the second sub-radiating portion 202 is adjusted, as shown in fig. 4, the working center frequency point of the antenna radiator is 7.5GHz, so that the UWB Channel5 frequency band (the center frequency point is 6.5GHz, and the bandwidth is 499.2 MHz) and the Channel9 frequency band (the center frequency point is 8GHz, and the bandwidth is 499.2 MHz) are completely covered.
In a third aspect, an embodiment of the present invention provides an electronic device, including the above antenna.
The electronic device may be a base station, an electronic tag, or a mobile terminal, and the embodiment is not limited thereto.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that many variations and modifications may be made in accordance with the teachings of the present invention, all within the scope of the present invention as claimed. The scope of the present invention is defined by the appended claims and their equivalents.
Claims (10)
1. An antenna radiator is characterized by comprising a first radiation part and a second radiation part connected with the first radiation part; a feeding part and a grounding part are further arranged on one side of the second radiation part, which is far away from the first radiation part;
the second radiation part comprises a first sub-radiation part and a second sub-radiation part connected with the first sub-radiation part; the outside of first sub-radiation portion is equipped with first corner cut, the outside of second sub-radiation portion is equipped with the second corner cut.
2. The antenna radiator of claim 1, wherein the first radiating portion is rectangular.
3. The antenna radiator of claim 2, wherein the ground portion is disposed on a first oblique side, and the feed portion is disposed between the first oblique side and a second oblique side; the first bevel edge is a bevel edge formed by the first chamfer angle, and the second bevel edge is a bevel edge formed by the second chamfer angle.
4. The antenna radiator of claim 1, wherein a sum of a width of the first radiating portion, a width of the second radiating portion, and a length of the second sub-radiating portion is a quarter of a wavelength corresponding to a resonant frequency of the antenna radiator.
5. The antenna radiator of claim 1, wherein the first sub-radiating portion and the second sub-radiating portion have a symmetrical structure.
6. The antenna radiator of claim 3, wherein an included angle between the first oblique side and the length direction of the first radiation portion is an acute angle, and an included angle between the second oblique side and the length direction of the second radiation portion is also an acute angle.
7. The antenna radiator of claim 6, wherein an included angle between the first oblique side and the length direction of the first radiation portion is 25 ° to 45 °, and an included angle between the second oblique side and the length direction of the second radiation portion is 25 ° to 45 °.
8. The antenna radiator of claim 1, wherein the first sub radiating portion, the second sub radiating portion, the first radiating portion, the ground portion, and the feeding portion are integrally formed.
9. An antenna comprising a substrate and an antenna radiator as claimed in any one of claims 1 to 8, said antenna radiator being provided on a surface of said substrate, said substrate further having a ground plane, said ground plane being connected to a ground portion of said antenna radiator.
10. An electronic device, characterized in that it comprises an antenna according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223405761.4U CN218867381U (en) | 2022-12-14 | 2022-12-14 | Antenna radiator, antenna and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223405761.4U CN218867381U (en) | 2022-12-14 | 2022-12-14 | Antenna radiator, antenna and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN218867381U true CN218867381U (en) | 2023-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223405761.4U Active CN218867381U (en) | 2022-12-14 | 2022-12-14 | Antenna radiator, antenna and electronic equipment |
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| CN (1) | CN218867381U (en) |
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- 2022-12-14 CN CN202223405761.4U patent/CN218867381U/en active Active
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