CN220439879U - Multi-frequency single-feed antenna and electronic equipment - Google Patents
Multi-frequency single-feed antenna and electronic equipment Download PDFInfo
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- CN220439879U CN220439879U CN202321987010.XU CN202321987010U CN220439879U CN 220439879 U CN220439879 U CN 220439879U CN 202321987010 U CN202321987010 U CN 202321987010U CN 220439879 U CN220439879 U CN 220439879U
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Abstract
The application relates to a multi-frequency single-feed antenna and electronic equipment, which comprises a dielectric substrate, a radiation arm and a coplanar waveguide line; the radiating arms are arranged on the front surface of the dielectric substrate, one end part of each radiating arm is provided with a coplanar microstrip line positioned in the middle and two side short arms positioned at two sides, and a containing groove is formed between each side short arm and the coplanar microstrip line; the coplanar waveguide line comprises two coplanar waveguide units symmetrically arranged on two sides of the coplanar microstrip line, the coplanar waveguide units comprise a CPW main body part and a CPW grounding part, the CPW main body part is positioned in the accommodating groove, one end of the CPW main body part, which is close to the coplanar microstrip line, is connected with the CPW grounding part, and the width of the CPW grounding part in the direction perpendicular to the direction away from the accommodating groove is gradually increased along the direction away from the accommodating groove. The antenna structure can solve the problems that in the related art, the antenna cost is high and the space requirement is large due to the fact that the oscillator or the antenna branches are added to form the multi-frequency antenna.
Description
Technical Field
The application relates to the technical field of antenna design, in particular to a multi-frequency single-feed antenna and electronic equipment.
Background
Antennas are devices for transmitting and receiving electromagnetic waves, and are an important place in wireless communication systems. Since the hertz and markoni utility model antennas, they have been widely used in various fields of human production and life. As researchers explore and study antennas, various different types and features of antennas are put into different application scenarios.
Along with the development of the WIFI technology, the requirements on the antennas are higher and higher, the requirements on the antenna size are smaller and the requirements on the number of the antennas are smaller and smaller. In practical use, when the system adopts multiple frequencies, in order to use the multiple frequency antenna, the method is generally adopted, wherein vibrators with structures of various frequency bands are respectively covered on two sides of a dielectric substrate of a PCB, or antenna branches corresponding to the frequency bands are added, and the antenna frequency bands are introduced, so that the multiple frequency antenna is formed.
Disclosure of Invention
The embodiment of the application provides a multi-frequency single-feed antenna and electronic equipment, which are used for solving the problems that in the related art, the cost of the antenna is high and the space requirement is large by adding vibrators or antenna branches to form the multi-frequency antenna.
In a first aspect, there is provided a multi-frequency single feed antenna comprising:
a dielectric substrate;
a radiation arm, which is arranged on the front surface of the dielectric substrate, wherein one end part of the radiation arm is provided with a coplanar microstrip line positioned in the middle and two side short arms positioned at two sides, and a containing groove is formed between the side short arms and the coplanar microstrip line;
the coplanar waveguide line comprises two coplanar waveguide units symmetrically arranged on two sides of the coplanar microstrip line, the coplanar waveguide units comprise a CPW main body part and a CPW grounding part, the CPW main body part is positioned in the accommodating groove, one end of the CPW main body part, which is close to the coplanar microstrip line, is connected with the CPW grounding part, and the width of the CPW grounding part in the direction perpendicular to the direction away from the accommodating groove is gradually increased along the direction away from the accommodating groove.
In some embodiments, the CPW grounding portion increases in width linearly or increases in a curve in a direction perpendicular to a direction away from the receiving groove.
In some embodiments, the CPW grounding portion increases in width exponentially in a direction perpendicular to a direction away from the receiving groove.
In some embodiments, a slotline is formed between the bottom of the receiving slot and the CPW body portion.
In some embodiments, the slotlines vary in width in a direction perpendicular to a direction along the coplanar microstrip line to the side short arms along the direction of the coplanar microstrip line to the side short arms.
In some embodiments, the slotline has a gradually increasing width in a direction perpendicular to a direction along the coplanar microstrip line to the side short arm.
In some embodiments, the slotline increases linearly or increases curvilinearly in width in a direction perpendicular to a direction along the coplanar microstrip line to the side short arm.
In some embodiments, the CPW grounding portions of the two coplanar waveguide units are connected by a CPW connection portion, so that the coplanar waveguide line is enclosed outside the coplanar microstrip line.
In a second aspect, there is provided an electronic device comprising a multi-frequency single feed antenna as described in any one of the above.
In some embodiments, the electronic device comprises one or more of a 5GCPE, gateway, and set top box.
The beneficial effects that technical scheme that this application provided brought include:
the embodiment of the application provides a multifrequency singly feed antenna and electronic equipment, in this application, a coplane microstrip line and two limit side short arms have been formed on the radiation arm, and the existence of accepting groove makes radiation arm tip shape is like M shape breach, is favorable to expanding as the bandwidth of center feed antenna like this.
The coplanar waveguide line 3 is typically spaced from the radiating arms, i.e. the coplanar waveguide line is spaced from both the side short arm and the coplanar microstrip line, such that the end of the CPW body portion remote from the coplanar microstrip line is open to the side short arm, corresponding to the formation of a capacitance between the CPW body portion and its opposing radiating arm 2, in parallel with the coplanar microstrip formed by the coplanar microstrip line and the coplanar waveguide line.
In addition, the width of the CPW grounding part in the direction perpendicular to the direction away from the accommodating groove is gradually increased, and the CPW grounding part with the shape can provide the capacitance with resonance characteristic for the target frequency band, so that the impedance characteristic of the target frequency band is optimized.
Therefore, under the condition of limited space, through the design of the feeding shape in the form, the multi-frequency single-feed antenna provided by the application meets the use requirements of two frequency bands of 2.4GHz and 6GHz, the multi-frequency antenna is realized, the requirement of the bandwidth of the antenna is increased, and the cost of the antenna can be greatly saved; the bandwidth of the 2.4GHz antenna is wider, the relative bandwidth is 80%, and the antennas produced in batch can keep good consistency.
The radiation mode of the whole antenna can be adjusted by adjusting the slopes of the M-shaped notch, the coplanar waveguide line and the CPW grounding part, so that the antenna frequency band can be adjusted.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a plan view of a multi-frequency single-feed antenna according to an embodiment of the present application;
fig. 2 is a plan view of another multi-frequency single-feed antenna according to an embodiment of the present application;
fig. 3 is a diagram of return loss S11 of the multi-frequency single-feed antenna according to the embodiment of the present application;
fig. 4 is a frequency-gain diagram of a multi-frequency single-feed antenna according to an embodiment of the present application.
In the figure: 1. a dielectric substrate; 2. a radiating arm; 21. coplanar microstrip lines; 22. side short arms; 23. a receiving groove; 24. a slot line is formed; 3. coplanar waveguide lines; 30. a CPW body portion; 31. CPW grounding part; 32. CPW connecting portion.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
Referring to fig. 1 and 2, the embodiment of the present application provides a multi-frequency single-feed antenna, which includes a dielectric substrate 1, a radiating arm 2, and a coplanar waveguide line 3, namely CPW (Coplanarwaveguide), where the dielectric substrate 1 has a pair of opposite wall surfaces, one of which is a back surface and the other of which is a front surface 10; the radiation arm 2 is disposed on the front surface 10 of the dielectric substrate 1, and typically, the radiation arm 2 is disposed on a central line of the dielectric substrate 1, for convenience of understanding, referring to fig. 1, two adjacent vertical sides of the dielectric substrate 1 are taken as an example, where one wide side is defined as an X direction, and the other long side is defined as a Y direction, and then the length extension direction of the radiation arm 2 is parallel to the Y direction, and the radiation arm 2 is located on the center of the wide side.
One end of the radiating arm 2 is formed with a coplanar microstrip line 21 in the middle and two side short arms 22 on both sides, and a receiving groove 23 is formed between the side short arms 22 and the coplanar microstrip line 21.
The coplanar waveguide line 3 comprises two coplanar waveguide units symmetrically arranged at two sides of the coplanar microstrip line 21, the coplanar waveguide units comprise a CPW main body part 30 and a CPW grounding part 31, the CPW main body part 30 is in a shape of a straight line extending along the X direction, the CPW main body part 30 is positioned in the accommodating groove 23, one end of the CPW main body part, which is close to the coplanar microstrip line 21, is connected with the CPW grounding part 31, along the direction away from the accommodating groove 23, the width of the CPW grounding part 31 in the direction perpendicular to the direction away from the accommodating groove 23 is gradually increased, namely along the Y direction and towards the direction away from the accommodating groove 23, and the width of the CPW grounding part 31 in the X direction is gradually increased.
In this application, a coplanar microstrip line 21 and two short arms 22 are formed on the radiating arm 2, and the existence of the accommodating groove 23 makes one end of the radiating arm 2 shaped like an M-shaped notch, which is beneficial to expanding the bandwidth as a center feed antenna.
The coplanar waveguide line 3 is typically spaced from the radiating arm 2, i.e. the coplanar waveguide line 3 is spaced from both the side short arm 22 and the coplanar microstrip line 21, such that the end of the CPW body portion 30 remote from the coplanar microstrip line 21 is open to the side short arm 22, corresponding to the capacitance formed between the CPW body portion 30 and the radiating arm 2 opposite thereto, in parallel with the coplanar microstrip formed by the coplanar microstrip line 21 and the coplanar waveguide line 3.
Further, the CPW grounding portion 31 has a width gradually increasing in a direction perpendicular to a direction away from the receiving groove 23, and with this shape of the CPW grounding portion 31, it is possible to provide a capacitance of resonance characteristic for a target frequency band, thereby optimizing impedance characteristic of the target frequency band.
Therefore, under the condition of limited space, through the design of the feeding shape in the form, the multi-frequency single-feed antenna provided by the application meets the use requirements of two frequency bands of 2.4GHz and 6GHz, the multi-frequency antenna is realized, the requirement of the bandwidth of the antenna is increased, and the cost of the antenna can be greatly saved; the bandwidth of the 2.4GHz antenna is wider, the relative bandwidth is 80%, and the antennas produced in batch can keep good consistency.
By adjusting the slopes of the M-notch, the coplanar waveguide line 3, and the CPW ground portion 31, the radiation mode of the entire antenna can be adjusted, thereby adjusting the antenna frequency band.
In this application, the width of the CPW grounding portion 31 in the direction perpendicular to the direction away from the receiving groove 23 is gradually increased, and various specific configurations thereof are provided.
For example, the width of the CPW grounding portion 31 in a direction perpendicular to a direction away from the receiving groove 23 is linearly increased, and at this time, the CPW grounding portion 31 resembles a right triangle.
As another example, the CPW grounding portion 31 increases in width in a direction perpendicular to a direction away from the housing groove 23 in a curve.
The above-described curve increasing form has various options, such as, for example, the CPW grounding portion 31 increasing exponentially in width in a direction perpendicular to a direction away from the housing groove 23.
The increase can be selected according to the radiation mode requirement of the adjusting antenna.
As shown in fig. 1 and 2, a slotline 24 is formed between the bottom of the accommodating groove 23 and the CPW main body 30, and is spaced from the radiating arm 2 relative to the coplanar waveguide line 3, and is directly designed as a slotline 24, which is more beneficial to forming a parallel capacitor.
Further, in order to optimize the parallel capacitance, as shown in fig. 1 and 2, along the direction from the coplanar microstrip line 21 to the side short arm 22, the width of the slotline 24 in the direction perpendicular to the direction from the coplanar microstrip line 21 to the side short arm 22 is different in size. Referring to fig. 1, the width of the slotline 24 in the Y direction varies from the coplanar microstrip line 21 to the side short arm 22 in the X direction.
As an example, referring to fig. 1, the slotline 24 has a gradually increasing width in a direction perpendicular to a direction along the coplanar microstrip line 21 to the side short arm 22, and various specific configurations thereof are provided.
For example, the slotline 24 has a linearly increasing width in a direction perpendicular to the direction along the coplanar microstrip line 21 to the side short arm 22, where the slotline 24 resembles a right triangle.
As another example, the slotline 24 increases in width in a direction perpendicular to a direction along the coplanar microstrip line 21 to the side short arm 22 in a curve.
Further, as shown in fig. 1, the CPW grounding portions 31 of the two coplanar waveguide units are connected by a CPW connection portion 32, so that the coplanar waveguide line 3 is enclosed outside the coplanar microstrip line 21.
In addition, it should be noted that, when the boundary of the CPW grounding portion 31 intersects with the long side perpendicular to the X direction during the gradual increase, the width thereof remains unchanged, and as shown in fig. 1, the width of the CPW grounding portion 31 in the X direction remains unchanged after the boundary is compared with the P point of the long side.
The embodiment of the application also provides electronic equipment, which comprises the multi-frequency single-feed antenna.
The electronic device may be of various types, for example, the electronic device may be a 5GCPE, a gateway, a set-top box, or the like.
The following is an example.
The multi-frequency single-feed antenna comprises a dielectric substrate 1, a radiation arm 2 and coplanar waveguide wires 3, wherein the radiation arm 2 is arranged on the front surface 10 of the dielectric substrate 1, one end part of the radiation arm 2 is provided with a coplanar microstrip line 21 positioned in the middle and two side short arms 22 positioned on two sides, and a containing groove 23 is formed between the side short arms 22 and the coplanar microstrip line 21.
The coplanar waveguide line 3 comprises two coplanar waveguide units symmetrically arranged at two sides of the coplanar microstrip line 21, the coplanar waveguide units comprise a CPW main body part 30 and a CPW grounding part 31, the CPW main body part 30 is positioned in the accommodating groove 23, one end of the CPW main body part, which is close to the coplanar microstrip line 21, is connected with the CPW grounding part 31, and the width of the CPW grounding part 31 in the direction perpendicular to the direction away from the accommodating groove 23 is gradually increased exponentially along the direction away from the accommodating groove 23.
Referring to fig. 3 and 4, fig. 3 is a return loss S11 diagram of the multi-frequency single-feed antenna, which shows that the impedance matching condition of the antenna and the 50 ohm feeder is generally limited to-10 dB, and is smaller than-10 dB. The frequency bands below-10 dB are 1.92-3.87 GHz and 5.76-7.5G, and the 2.4G (2.4-2.5G) frequency bands and the 6G (5.8-7.2G) frequency bands of wifi are completely covered, so that the frequency bands and the bandwidths are met.
Fig. 4 is a frequency-gain diagram of the multi-frequency single-feed antenna, and it can be seen that the antenna gain is greater than 5dBi in the frequency bands of 2.4G (2.4-2.5G) and 6G (5.8-7.2G), so that the practical application is completely satisfied.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
It should be noted that in this application, 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. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. 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 application. Thus, the present application 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-frequency single feed antenna, comprising:
a dielectric substrate (1);
a radiation arm (2) which is arranged on the front surface (10) of the dielectric substrate (1), wherein a coplanar microstrip line (21) positioned in the middle and two side short arms (22) positioned at two sides are formed at one end part of the radiation arm (2), and a containing groove (23) is formed between the side short arms (22) and the coplanar microstrip line (21);
the coplanar waveguide line (3) comprises two coplanar waveguide units symmetrically arranged on two sides of the coplanar microstrip line (21), the coplanar waveguide units comprise a CPW main body part (30) and a CPW grounding part (31), the CPW main body part (30) is arranged in the accommodating groove (23), one end, close to the coplanar microstrip line (21), of the CPW main body part is connected with the CPW grounding part (31), and the width of the CPW grounding part (31) in the direction perpendicular to the direction away from the accommodating groove (23) is gradually increased along the direction away from the accommodating groove (23).
2. The multi-frequency, single-feed antenna of claim 1, wherein:
the CPW grounding section (31) increases linearly or increases curvilinearly in width in a direction perpendicular to a direction away from the housing groove (23).
3. The multi-frequency, single-feed antenna of claim 2, wherein:
the CPW grounding section (31) increases in width exponentially in a direction perpendicular to a direction away from the housing groove (23).
4. The multi-frequency, single-feed antenna of claim 1, wherein:
a slot line (24) is formed between the slot bottom of the accommodating slot (23) and the CPW main body part (30).
5. The multi-frequency, single-feed antenna of claim 4, wherein:
along the direction from the coplanar microstrip line (21) to the side short arm (22), the slotline (24) has a width of different magnitudes in a direction perpendicular to the direction from the coplanar microstrip line (21) to the side short arm (22).
6. The multi-frequency, single-feed antenna of claim 5, wherein:
the slotline (24) has a gradually increasing width in a direction perpendicular to a direction along the coplanar microstrip line (21) to the side short arm (22).
7. The multi-frequency, single-feed antenna of claim 6, wherein:
the slotline (24) increases linearly or increases curvilinearly in width in a direction perpendicular to a direction along the coplanar microstrip line (21) to the side short arm (22).
8. The multi-frequency, single-feed antenna of claim 1, wherein:
the CPW grounding parts (31) of the two coplanar waveguide units are connected through a CPW connecting part (32) so that the coplanar waveguide wires (3) are surrounded on the outer sides of the coplanar microstrip lines (21).
9. An electronic device, characterized in that: comprising a multi-frequency single feed antenna according to any of claims 1 to 8.
10. The electronic device of claim 9, wherein: the electronic equipment comprises one or more of 5GCPE, a gateway and a set top box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321987010.XU CN220439879U (en) | 2023-07-26 | 2023-07-26 | Multi-frequency single-feed antenna and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321987010.XU CN220439879U (en) | 2023-07-26 | 2023-07-26 | Multi-frequency single-feed antenna and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220439879U true CN220439879U (en) | 2024-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321987010.XU Active CN220439879U (en) | 2023-07-26 | 2023-07-26 | Multi-frequency single-feed antenna and electronic equipment |
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| Country | Link |
|---|---|
| CN (1) | CN220439879U (en) |
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2023
- 2023-07-26 CN CN202321987010.XU patent/CN220439879U/en active Active
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