CN110620294B - A conformable low-profile dual-band WiFi antenna and device - Google Patents
A conformable low-profile dual-band WiFi antenna and device Download PDFInfo
- Publication number
- CN110620294B CN110620294B CN201910981197.4A CN201910981197A CN110620294B CN 110620294 B CN110620294 B CN 110620294B CN 201910981197 A CN201910981197 A CN 201910981197A CN 110620294 B CN110620294 B CN 110620294B
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- ground plane
- radiation unit
- wifi antenna
- antenna
- strip
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2291—Supports; Mounting means by structural association with other equipment or articles used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Waveguide Aerials (AREA)
Abstract
The application discloses a conformal low-profile dual-frequency WiFi antenna and equipment, which comprise a radiation unit and a ground plane, wherein the radiation unit is fixedly connected with the ground plane in parallel, the gap between the radiation unit and the ground plane is 2-3mm, an L-shaped groove and a plurality of strip-shaped grooves are arranged on the radiation unit, the strip-shaped grooves are arranged in parallel with the short sides of the L-shaped groove, and the lengths of the strip-shaped grooves from the short sides of the L-shaped groove to the edge sides of the radiation unit are gradually reduced. Since the gap between the radiating element and the ground plane is 2-3mm, the cross section of the antenna is made low to facilitate conformal mounting on the device housing. And be provided with L shape groove and a plurality of bar shape groove on the radiating element, the setting of L shape groove makes the antenna realize the dual-frenquency characteristic, and the structure setting of a plurality of bar shape grooves makes the electric current present travelling wave characteristic in bar shape groove region when high frequency, realizes the broadband of antenna.
Description
Technical Field
The application relates to the technical field of antennas, in particular to a conformal low-profile dual-frequency WiFi antenna and equipment.
Background
In order to satisfy more and more functions, the electronic devices need more and more reserved interfaces, such as HDMI interfaces, data/audio interfaces, radio frequency interfaces, etc., but the number of interfaces must be reduced due to the limitation of the physical size of the devices, and the WiFi antenna is considered to be in stealth design, such as built-in or conformal, on the premise of not affecting the performance of the devices. Therefore, the volume occupied by the external antenna in space is reduced, and the acceptability of users is also increased.
As one of the important components of a wireless system, the performance of the antenna is directly related to the communication quality of the system, which puts more and more stringent requirements on the built-in antenna or the conformal antenna, such as small, thin, multi-band operation, etc. The prior art solutions mostly use built-in antennas mounted on printed circuit boards, but for electronic devices with metal housings, such mounted built-in antennas are not suitable.
For equipment with a metal cavity shell, if a built-in antenna arranged on a printed circuit board is adopted, a metal cavity is required to be drilled through by 'windowing' on the shell of the equipment, and wave-transmitting materials are filled, so that electromagnetic waves can penetrate through the cavity, the processing difficulty and the cost are increased, the rigidity of the shell is reduced, and if the skylight is not opened on the shell of the equipment, the communication quality of the antenna is affected.
Disclosure of Invention
In order to solve the technical problems, the application provides the following technical scheme:
In a first aspect, an embodiment of the application provides a conformal low-profile dual-frequency WiFi antenna, which comprises a radiation unit and a ground plane, wherein the radiation unit is fixedly connected with the ground plane in parallel, a gap between the radiation unit and the ground plane is 2-3 mm, an L-shaped groove and a plurality of strip-shaped grooves are arranged on the radiation unit, the strip-shaped grooves are arranged in parallel with the short sides of the L-shaped groove, and the lengths of the strip-shaped grooves gradually decrease from the short sides of the L-shaped groove to the edge sides of the radiation unit.
By adopting the implementation mode, the gap between the radiating unit and the ground plane is 2-3 mm, so that the section of the antenna is lower, and the antenna is conveniently and conformally installed on the equipment shell. And be provided with L shape groove and a plurality of bar shape groove on the radiating element, the setting of L shape groove makes the antenna realize the dual-frenquency characteristic, and the structure setting of a plurality of bar shape grooves makes the electric current present travelling wave characteristic in bar shape groove region when high frequency, realizes the broadband of antenna.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the strip-shaped groove is a semi-closed groove, one end of the strip-shaped groove is located in the plane of the radiating element, and the other end of the strip-shaped groove is open and located at the edge of the radiating element.
With reference to the first aspect, in a second possible implementation manner of the first aspect, the ground plane is a rectangular metal sheet, and the length of the ground plane is 57.2 mm-57.8 mm, and the width of the ground plane is 37.2 mm-37.8 mm.
With reference to the first aspect, in a third possible implementation manner of the first aspect, a plurality of the strip-shaped grooves are arranged at equal intervals, and the lengths of any two adjacent strip-shaped grooves are the same, and the widths of each strip-shaped groove are the same.
With reference to the first aspect, in a fourth possible implementation manner of the first aspect, a short-circuit metal sheet is disposed between the radiating element and the ground plane, the short-circuit metal sheet is a rectangular metal sheet, and the length of the short-circuit metal sheet is 12.2 mm-12.8 mm, and the width of the short-circuit metal sheet is 2 mm-3 mm.
With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, a coaxial feeder is further provided between the radiating element and the ground plane, the coaxial feeder is perpendicular to the radiating element and the ground plane, the coaxial feeder is fixedly connected with the radiating element and the ground plane respectively, and one end of the coaxial feeder is located at a corner position of the radiating element.
With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, a feed welding spot of an antenna is disposed on the radiating element, an antenna grounding welding spot is disposed on the grounding plane, and the coaxial feeder is fixedly connected with the feed welding spot and the grounding welding spot respectively.
With reference to the first aspect, in a seventh possible implementation manner of the first aspect, the radiating element is a rectangular metal sheet, and the radiating element has a length of 25.1mm to 25.7mm and a width of 23.5mm to 24.1mm.
With reference to the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, the L-shaped groove is disposed on one side of the radiating element, and a plurality of the strip-shaped grooves are disposed at corners of the radiating element.
In a second aspect, embodiments of the present application provide a device, where an antenna according to the first aspect or any possible implementation manner of the first aspect is provided on a housing of the device.
Drawings
Fig. 1 is a schematic structural diagram of a conformal low-profile dual-frequency WiFi antenna according to an embodiment of the application;
fig. 2 is a schematic structural diagram of a radiation unit according to an embodiment of the present application;
fig. 3 is a schematic diagram of a return loss curve of a conformal low-profile dual-frequency WiFi antenna according to an embodiment of the application;
Fig. 4 is a schematic diagram of a conformal low-profile dual-frequency WiFi antenna in a vertical plane direction at 2.44GHz according to an embodiment of the application;
Fig. 5 is a schematic diagram of a conformal low-profile dual-frequency WiFi antenna in a vertical plane direction of 5.5GHz according to an embodiment of the application;
Fig. 6 is a schematic diagram of a maximum gain curve of a conformal low-profile dual-band WiFi antenna in an entire frequency band according to an embodiment of the present application;
Fig. 7 is a schematic structural diagram of an apparatus according to an embodiment of the present application;
in fig. 1 to 7, the symbols are as follows:
1-radiating element, 11-L-slot, 12-first slot, 13-second slot, 14-third slot, 15-fourth slot, 16-fifth slot, 2-ground plane, 3-shorting metal sheet, 4-coaxial feed.
Detailed Description
The present invention is described below with reference to the drawings and the detailed description.
Fig. 1 is a schematic structural diagram of a conformal low-profile dual-frequency WiFi antenna according to an embodiment of the present application, and referring to fig. 1, the conformal low-profile dual-frequency WiFi antenna according to an embodiment of the present application includes a radiating element 1 and a ground plane 2, where the radiating element 1 is fixedly connected with the ground plane 2 in parallel, and a gap between the radiating element 1 and the ground plane 2 is 2-3 mm.
In the embodiment of the application, the ground plane 2 is a rectangular metal sheet, the length of the ground plane 2 is 57.2 mm-57.8 mm, and the width of the ground plane 2 is 37.2 mm-37.8 mm. If mounted parallel to the metal housing of the electronic device, the metal housing of the electronic device may be used as a ground plane.
A short-circuit metal sheet 3 is arranged between the radiating element 1 and the ground plane 2 for connecting the radiating element 1 and the ground plane 2. The short circuit metal sheet 3 is a rectangular metal sheet, and the length of the short circuit metal sheet 3 is 12.2 mm-12.8 mm, and the width is 2 mm-3 mm.
A coaxial feeder 4 is further arranged between the radiating element 1 and the ground plane 2, the coaxial feeder 4 is perpendicular to the radiating element 1 and the ground plane 2, the coaxial feeder 4 is fixedly connected with the radiating element 1 and the ground plane 2 respectively, and one end of the coaxial feeder 4 is located at the corner position of the radiating element 1.
Specifically, a feeding welding spot of an antenna is arranged on the radiating unit 1, an antenna grounding welding spot is arranged on the grounding plane, and the coaxial feeder 4 is fixedly connected with the feeding welding spot and the grounding welding spot respectively.
Referring to fig. 2, the radiating element 1 is a rectangular metal sheet, and the radiating element 1 has a length of 25.1mm to 25.7mm and a width of 23.5mm to 24.1mm. The radiation unit 1 is provided with an L-shaped groove 11 and a plurality of strip-shaped grooves, the plurality of strip-shaped grooves are arranged in parallel with the short sides of the L-shaped groove 11, and the lengths of the plurality of strip-shaped grooves gradually decrease from the short sides of the L-shaped groove 11 to the edge sides of the radiation unit. The L-shaped groove 11 is arranged on one side of the radiating unit 1, and a plurality of strip-shaped grooves are arranged at corners of the radiating unit 1.
The L-shaped groove 11 is a closed groove, the L-shaped groove 11 is a key for realizing double-frequency operation of the antenna, the L-shaped groove 11 does not cut off the edge of the rectangular metal sheet, so that high-frequency current mainly flows into the strip-shaped groove area along the inner side of the L-shaped groove and radiates out, and the low frequency is the whole metal sheet to participate in radiation.
With further reference to fig. 2, the bar grooves in the embodiment of the present application include a first bar groove 12, a second bar groove 13, a third bar groove 14, a fourth bar groove 15, and a fifth bar groove 16.
The first, second, third, fourth and fifth grooves 12, 13, 14, 15 and 16 are semi-closed grooves, one end of each groove is located in the plane of the radiation unit 1, and the other end of each groove is open and located at the edge of the radiation unit 1. The plurality of strip-shaped grooves are arranged at equal intervals, the length difference of any two adjacent strip-shaped grooves is the same, and the width of each strip-shaped groove is the same.
That is, the widths of the first, second, third, fourth and fifth grooves 12, 13, 14, 15 and 16 are the same, and the pitches between adjacent ones are also the same. The difference in length between the first and second grooves 12, 13 is the same as the difference in length between the second and third grooves 13, 14, and so on.
The first slot 12, the second slot 13, the third slot 14, the fourth slot 15 and the fifth slot 16 are key to realizing high-frequency broadband operation, and the slots with different sizes and positions are adopted, so that current shows travelling wave characteristics in the area at high frequency, and broadband is realized. If the first, second, third, fourth and fifth grooves 12, 13, 14, 15 and 16 are located in parallel in a concentrated region, and the edges of the rectangular metal sheet are cut off, the rest of the rectangular metal sheet becomes a vibrator, and participates in radiation of a high frequency band, and expands the high frequency band.
Referring to fig. 3, the return loss curve of the conformal low-profile dual-frequency WiFi antenna provided by the embodiment of the application can be known, and the conformal low-profile dual-frequency WiFi antenna provided by the application has small loss, so that the antenna can be installed on equipment to work quickly.
As can be seen from fig. 4 and fig. 5, when the frequency ranges are 2.44GHz and 5.5GHz, the vertical plane directional diagram shows that the conformal low-profile dual-frequency WiFi antenna provided by the application can realize dual frequency ranges, and the lobe angle is large.
As can be seen from fig. 6, the gain of the conformal low-profile dual-frequency WiFi antenna provided by the embodiment of the application in the whole frequency band is kept at a larger value, so that the antenna can achieve a good coverage effect.
According to the embodiment, the conformal low-profile dual-frequency WiFi antenna provided by the embodiment of the application has the advantages of small overall size and lower profile, and is convenient to install on the equipment shell in a conformal manner. The antenna body comprises the sheetmetal, and is with low costs, is provided with L shape groove 11 and a plurality of bar shape groove on the radiating element 1, and the setting of L shape groove 11 makes the antenna realize the dual-frenquency characteristic, and the structure setting of a plurality of bar shape grooves makes the electric current present travelling wave characteristic in bar shape groove region when the high frequency, realizes the broadband of antenna. The antenna has good standing waves only in the working frequency band and is not easy to be interfered by out-of-band signals. The antenna has high gain and large lobe angle, and can achieve good coverage effect.
Corresponding to the embodiment of the conformal low-profile dual-frequency WiFi antenna provided by the foregoing embodiment, the present application further provides an embodiment of a device, specifically an electronic device, and referring to fig. 7, a housing of the device is provided with the conformal low-profile dual-frequency WiFi antenna provided by the foregoing embodiment.
Specifically, the electronic device in this embodiment is an electronic device with a metal housing, and by adopting the conformal low-profile dual-frequency WiFi antenna in the above embodiment, the antenna can be quickly arranged on the device housing, so that the device can achieve good communication through the characteristics of high gain and large lobe angle of the antenna, and good coverage can be achieved.
It should be noted that in this document, 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 an element.
It should be understood that the above embodiments and the drawings are only for illustrating the technical solution of the present application, but not for limiting the present application, and that the present application is only described in detail with reference to the preferred embodiments, and that the changes, modifications, additions or substitutions made by those skilled in the art within the spirit and scope of the present application will not depart from the spirit and scope of the present application.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910981197.4A CN110620294B (en) | 2019-10-16 | 2019-10-16 | A conformable low-profile dual-band WiFi antenna and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910981197.4A CN110620294B (en) | 2019-10-16 | 2019-10-16 | A conformable low-profile dual-band WiFi antenna and device |
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| Publication Number | Publication Date |
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| CN110620294A CN110620294A (en) | 2019-12-27 |
| CN110620294B true CN110620294B (en) | 2024-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910981197.4A Active CN110620294B (en) | 2019-10-16 | 2019-10-16 | A conformable low-profile dual-band WiFi antenna and device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205692948U (en) * | 2016-05-09 | 2016-11-16 | 天津职业技术师范大学 | Flag-shaped isometric L-shaped groove dual-band antenna |
| CN109301475A (en) * | 2018-11-14 | 2019-02-01 | 河北工业大学 | A kind of flexible implanted antenna of miniaturization broadband |
| CN210326118U (en) * | 2019-10-16 | 2020-04-14 | 成都奥特为通讯有限公司 | Conformal low-profile dual-frequency WiFi antenna |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI115261B (en) * | 2003-02-27 | 2005-03-31 | Filtronic Lk Oy | Multi-band planar antenna |
| CN106558753A (en) * | 2015-09-30 | 2017-04-05 | 绍兴中科移联信息科技有限公司 | A kind of PIFA antennas suitable for GSM900 frequency ranges and Bluetooth band |
| CN205016662U (en) * | 2015-09-30 | 2016-02-03 | 绍兴中科移联信息科技有限公司 | PIFA antenna suitable for GSM900 frequency channel and bluetooth frequency channel |
-
2019
- 2019-10-16 CN CN201910981197.4A patent/CN110620294B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205692948U (en) * | 2016-05-09 | 2016-11-16 | 天津职业技术师范大学 | Flag-shaped isometric L-shaped groove dual-band antenna |
| CN109301475A (en) * | 2018-11-14 | 2019-02-01 | 河北工业大学 | A kind of flexible implanted antenna of miniaturization broadband |
| CN210326118U (en) * | 2019-10-16 | 2020-04-14 | 成都奥特为通讯有限公司 | Conformal low-profile dual-frequency WiFi antenna |
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| CN110620294A (en) | 2019-12-27 |
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