CN214411525U - Coupling feed plane ultra wide band annular LTE antenna and electronic equipment - Google Patents
Coupling feed plane ultra wide band annular LTE antenna and electronic equipment Download PDFInfo
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- CN214411525U CN214411525U CN202120007628.XU CN202120007628U CN214411525U CN 214411525 U CN214411525 U CN 214411525U CN 202120007628 U CN202120007628 U CN 202120007628U CN 214411525 U CN214411525 U CN 214411525U
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Abstract
The utility model discloses a coupling feed plane ultra wide band annular LTE antenna and electronic equipment, which comprises a substrate, a monopole antenna and an antenna radiator; the substrate comprises a first surface and a second surface which are opposite, the first surface is provided with a ground plane and a feeding plane, and the monopole antenna is arranged on the feeding plane; the antenna radiator is disposed on the second surface and coupled to the monopole antenna. The utility model discloses need not to use antenna boom, and can reduce the altitude requirement.
Description
Technical Field
The utility model relates to a wireless communication technology field especially relates to a plane ultra wide band annular LTE antenna and electronic equipment of coupling feed.
Background
With the development of smart phones and antenna technologies, more and more antennas are provided in the smart phones, and the height of the space reserved for the smart phones is reduced, so that conventional PIFA antennas (planar inverted F antennas) and Monopole antennas (Monopole antennas) all require a certain antenna height, and if the antenna height is too small, the radiation performance of the antenna is affected.
The existing antenna design either utilizes an antenna support and requires the antenna support to have enough height, or the antenna is laser-etched out from the middle shell of the mobile phone through an LDS technology, and even if a planar printed antenna is provided, only the single frequency band of BT (2.4G-2.5G) is supported. Moreover, both of the two schemes have certain requirements on the height of the antenna, but the thickness of the current mobile phone determines that the height reserved for the antenna is extremely limited, so that the design of the antenna is limited.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the plane ultra-wideband annular LTE antenna and the electronic equipment with coupled feeding are provided, an antenna support is not needed, and the height requirement can be reduced.
In order to solve the technical problem, the utility model discloses a technical scheme be: a coupling feed planar ultra-wideband annular LTE antenna comprises a substrate, a monopole antenna and an antenna radiator; the substrate comprises a first surface and a second surface which are opposite, the first surface is provided with a ground plane and a feeding plane, and the monopole antenna is arranged on the feeding plane; the antenna radiator is disposed on the second surface and coupled to the monopole antenna.
Further, the antenna also comprises a feeding point, and the feeding point is connected with the monopole antenna.
Further, the monopole antenna is L-shaped; one end of the monopole antenna is connected with the feed point, and the other end of the monopole antenna is suspended.
Further, the antenna comprises a protective layer, wherein the protective layer is arranged on the substrate and covers the monopole antenna and the antenna radiator.
Further, the protective layer is green oil.
Further, the substrate is an FR4 substrate.
The utility model also provides an electronic equipment, include as above the plane ultra wide band annular LTE antenna of coupling feed.
The beneficial effects of the utility model reside in that: the monopole antenna on the feeding surface is coupled and fed to the antenna radiator on the radiating plane, so that the antenna radiator is excited to generate resonance of different frequency bands, and the requirement of the working frequency band of the antenna is met; the antenna occupies a small space of the equipment, has the characteristics of simple design and convenient use, does not need a plastic support and saves the cost of the support.
Drawings
Fig. 1 is a schematic front view of an antenna according to a first embodiment of the present invention;
fig. 2 is a schematic back view of an antenna according to a first embodiment of the present invention;
fig. 3 is a schematic diagram of antenna parameters according to the first embodiment of the present invention.
Description of reference numerals:
1. a substrate; 2. a monopole antenna; 3. an antenna radiator; 4. a feed point;
11. a ground plane; 12. a feeding surface; 13. a radiating plane;
31. a first slit; 32. a second slit.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made in conjunction with the embodiments and the accompanying drawings.
Referring to fig. 1-2, a planar ultra-wideband loop LTE antenna with coupled feeding includes a substrate, a monopole antenna, and an antenna radiator; the substrate comprises a first surface and a second surface which are opposite, the first surface is provided with a ground plane and a feeding plane, and the monopole antenna is arranged on the feeding plane; the antenna radiator is disposed on the second surface and coupled to the monopole antenna.
From the above description, the beneficial effects of the present invention are: the monopole antenna on the feeding surface is coupled and fed to the antenna radiator on the radiating plane, so that the antenna radiator is excited to generate resonance of different frequency bands, and the requirement of the working frequency band of the antenna is met; the antenna occupies a small space of the equipment, has the characteristics of simple design and convenient use, does not need a plastic support and saves the cost of the support.
Further, the antenna also comprises a feeding point, and the feeding point is connected with the monopole antenna.
As can be seen from the above description, the monopole antenna passing through the feeding plane is coupled to the antenna radiator on the radiating plane, thereby generating resonance.
Further, the monopole antenna is L-shaped; one end of the monopole antenna is connected with the feed point, and the other end of the monopole antenna is suspended.
Further, the antenna comprises a protective layer disposed on the substrate and covering the monopole antenna and the antenna radiator
Further, the protective layer is green oil.
As can be seen from the above description, the connection between the antenna and other metal members can be blocked by disposing a layer of green oil on the outer layer of the substrate.
Further, the substrate is an FR4 substrate.
The utility model also provides an electronic equipment, include as above the plane ultra wide band annular LTE antenna of coupling feed.
Example one
Referring to fig. 1-3, a first embodiment of the present invention is: the utility model provides a plane ultra wide band annular LTE antenna of coupling feed, can be applied to intelligent terminal equipment, includes base plate, monopole antenna and antenna radiator, the base plate includes relative first face and second face.
As shown in fig. 1, a ground plane 11 and a feeding plane 12 are disposed on the first surface of the substrate 1, and the monopole antenna 2 is disposed on the feeding plane 12. Further, a feeding point 4 is included, and the feeding point 4 is connected with the monopole antenna 2.
Preferably, the monopole antenna is L-shaped; one end of the monopole antenna is connected with the feed point, and the other end of the monopole antenna is suspended.
As shown in fig. 2, a radiation plane 13 is disposed on the second surface of the substrate 1, and the antenna radiator 3 is disposed on the radiation plane 13 and coupled to the monopole antenna 2. That is, the monopole and the antenna radiator are located opposite.
In this embodiment, the L-type monopole antenna on the feeding surface is coupled and fed to the antenna radiator on the radiation plane, so as to generate resonance, and two different branches (i.e. the antenna branch on the feeding surface and the antenna branch on the radiation plane) are excited by the same feeding line, so that a capacitor is generated between them, and thus the generated higher order modes together form a frequency bandwidth meeting the requirement.
Further, as shown in fig. 2, a first slot 31 and a second slot 32 are disposed on the antenna radiator 3, the first slot 31 includes two branches connected in sequence, and the second slot 32 includes four branches connected in sequence. In this embodiment, the first slit is L-shaped, and the second slit is disposed around the first slit. The length and width of the slot vary according to the resonant frequency. Preferably, the lengths of the first and second slots are each one-half wavelength long of their respective resonant frequencies.
Further, a projection of the monopole antenna on the substrate intersects a projection of the first slot and the second slot in the antenna radiator on the substrate to increase coupling.
Further, the antenna further includes a protective layer (not shown in the figure) disposed on the substrate and covering the monopole antenna and the antenna radiator. Preferably, the protective layer is a green oil. The connection between the antenna and other metal parts can be blocked by arranging a layer of green oil on the outer layer of the substrate. Preferably, the substrate is an FR4 substrate.
In this example, the size of the whole device is 160mm x 80mm x 1mm, the area used by the antenna is 40mm x 8mm x 1mm, and the planar loop antenna prints metal onto the FR4 substrate by a printing process.
Fig. 3 is a diagram of S11 parameters of the antenna of this embodiment, where fig. 3 includes two groups of curves, which are functions of expanding the low-frequency bandwidth after adding the radio frequency switch in this embodiment, and the low-frequency bandwidth may be expanded to 700Mhz-960Mhz in practical application, and fig. 3 only shows two selected switch states. As can be seen from fig. 3, the initial state of the antenna satisfies 880-960Mhz, the high frequency satisfies 1710-2690Mhz, the low frequency can be expanded to 700M by the rf switch, and the requirement of the LTE frequency band is completely satisfied.
In the embodiment, the antenna branches of the radiating surface are excited to generate resonance of different frequency bands in a coupling feeding mode, so that the frequency band requirement of antenna operation is met. The height of the antenna is only 1mm, so that the space above the height of the communication equipment is saved; the antenna of the embodiment can be processed and manufactured together with the PCB, so that the process cost of the manufacturing process is saved; there is no height requirement, so it can be placed at other positions of the PCB board; the antenna occupies a small space of the equipment, has the characteristics of simple design and convenient use, does not need a plastic support and saves the cost of the support.
To sum up, the utility model provides a plane ultra wide band annular LTE antenna and electronic equipment of coupling feed, through the mode of coupling feed, arouse the antenna radiator to produce the resonance of different frequency channels, satisfy the frequency channel requirement of antenna work; the antenna occupies a small space of the equipment, has the characteristics of simple design and convenient use, does not need an antenna bracket and saves the cost of the bracket.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (7)
1. A coupling feed planar ultra-wideband annular LTE antenna is characterized by comprising a substrate, a monopole antenna and an antenna radiator; the substrate comprises a first surface and a second surface which are opposite, the first surface is provided with a ground plane and a feeding plane, and the monopole antenna is arranged on the feeding plane; the antenna radiator is disposed on the second surface and coupled to the monopole antenna.
2. The coupled-feed planar ultra-wideband loop LTE antenna as claimed in claim 1, further comprising a feed point, the feed point being connected to the monopole antenna.
3. The coupled-feed planar ultra-wideband loop LTE antenna as claimed in claim 2, wherein the monopole antenna is L-shaped; one end of the monopole antenna is connected with the feed point, and the other end of the monopole antenna is suspended.
4. The coupled-feed planar ultra-wideband loop LTE antenna according to claim 1, further comprising a protective layer disposed on the substrate and covering the monopole antenna and antenna radiator.
5. The coupled-feed planar ultra-wideband loop LTE antenna of claim 4, wherein the protective layer is green oil.
6. The coupled-feed planar ultra-wideband loop LTE antenna according to claim 1, wherein the substrate is an FR4 substrate.
7. An electronic device comprising a feed-coupled planar ultra-wideband loop LTE antenna according to any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120007628.XU CN214411525U (en) | 2021-01-04 | 2021-01-04 | Coupling feed plane ultra wide band annular LTE antenna and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120007628.XU CN214411525U (en) | 2021-01-04 | 2021-01-04 | Coupling feed plane ultra wide band annular LTE antenna and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214411525U true CN214411525U (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120007628.XU Active CN214411525U (en) | 2021-01-04 | 2021-01-04 | Coupling feed plane ultra wide band annular LTE antenna and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214411525U (en) |
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2021
- 2021-01-04 CN CN202120007628.XU patent/CN214411525U/en active Active
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