CN110620294A - Conformal low-profile dual-frequency WiFi antenna and equipment - Google Patents
Conformal low-profile dual-frequency WiFi antenna and equipment Download PDFInfo
- Publication number
- CN110620294A CN110620294A CN201910981197.4A CN201910981197A CN110620294A CN 110620294 A CN110620294 A CN 110620294A CN 201910981197 A CN201910981197 A CN 201910981197A CN 110620294 A CN110620294 A CN 110620294A
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- radiating element
- ground plane
- groove
- antenna
- wifi antenna
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- 230000005855 radiation Effects 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims description 30
- 229910000679 solder Inorganic materials 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
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, and a gap between the radiation unit and the ground plane is 2-3 mm; be provided with L shape groove and a plurality of bar groove on the radiating element, it is a plurality of the bar groove with the minor face parallel arrangement in L shape groove, and a plurality of the bar groove is followed the minor face side in L shape groove arrives the marginal side length of radiating element reduces gradually. The antenna is made low in profile for conformal mounting on the device housing, since the gap between the radiating element and the ground plane is 2-3 mm. And radiation element is last to be provided with L shape groove and a plurality of bar groove, and the setting in L shape groove makes the antenna realize the dual-frenquency characteristic, and the structure setting in a plurality of bar grooves makes electric current appear the travelling wave characteristic in bar groove region during the high frequency, realizes the broadband of antenna.
Description
Technical Field
The application relates to the technical field of antennas, in particular to a low-profile dual-frequency WiFi antenna and equipment which can be conformal.
Background
In order to satisfy more and more functions, more and more interfaces are required to be reserved for electronic devices, such as: the HDMI interface, the data/audio interface, the radio frequency interface, and the like are limited by the physical size of the device, the number of interfaces must be reduced, and the WiFi antenna is designed to be invisible, such as built-in or conformal, without affecting the performance of the device. Therefore, the volume occupied by the external antenna in space is reduced, and the acceptability of users is also increased.
The performance of the antenna, which is one of the important components of a wireless system, is directly related to the communication quality of the system, which puts more and more demanding requirements on the built-in antenna or the conformal antenna, such as small size, thinness, multi-band operation, etc. The prior art mostly adopts the built-in antenna installed on the printed circuit board, but for the electronic equipment with a metal shell, the built-in antenna installed in the way is not suitable.
For the equipment with the metal cavity shell, if the built-in antenna installed on the printed circuit board is adopted, the metal cavity needs to be opened on the shell of the equipment, the metal cavity is drilled through, and the wave-transmitting material is filled in the metal cavity, so that electromagnetic waves can penetrate through the cavity, the processing difficulty and cost are increased, the rigidity of the shell is reduced, and the communication quality of the antenna is influenced if the skylight is not opened on the equipment shell.
Disclosure of Invention
In order to solve the technical problems, the following technical scheme is provided:
in a first aspect, an embodiment of the application provides a conformal low-profile dual-frequency WiFi antenna, which includes a radiation unit and a ground plane, wherein the radiation unit is fixedly connected to the ground plane in parallel, and a gap between the radiation unit and the ground plane is 2-3 mm; be provided with L shape groove and a plurality of bar groove on the radiating element, it is a plurality of the bar groove with the minor face parallel arrangement in L shape groove, and a plurality of the bar groove is followed the minor face side in L shape groove arrives the marginal side length of radiating element reduces gradually.
By adopting the implementation mode, the gap between the radiation unit and the ground plane is 2-3mm, so that the profile of the antenna is lower, and the antenna is conveniently conformally mounted on the equipment shell. And radiation element is last to be provided with L shape groove and a plurality of bar groove, and the setting in L shape groove makes the antenna realize the dual-frenquency characteristic, and the structure setting in a plurality of bar grooves makes electric current appear the travelling wave characteristic in bar groove region during the 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 a plane of the radiation unit, and an opening of the other end of the strip-shaped groove is located at an edge of the radiation unit.
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 57.2mm to 57.8mm, and the width of the ground plane is 37.2mm to 37.8 mm.
With reference to the first aspect, in a third possible implementation manner of the first aspect, the plurality of strip-shaped grooves are arranged at equal intervals, the length difference between any two adjacent strip-shaped grooves is the same, and the width of each strip-shaped groove is 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 radiation unit and the ground plane, the short-circuit metal sheet is a rectangular metal sheet, and the short-circuit metal sheet has a length of 12.2mm to 12.8mm and a width of 2mm to 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 disposed 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 to 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, the radiating element is provided with a feed solder joint of an antenna, the ground plane is provided with an antenna ground solder joint, and the coaxial feeder is respectively and fixedly connected to the feed solder joint and the ground solder joint.
With reference to the first aspect, in a seventh possible implementation manner of the first aspect, the radiation unit is a rectangular metal sheet, and the length of the radiation unit is 25.1mm to 25.7mm, and the width of the radiation unit is 23.5mm to 24.1 mm.
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 at one side of the radiation unit, and the plurality of strip-shaped grooves are disposed at corners of the radiation unit.
In a second aspect, an embodiment of the present application provides an apparatus, where an antenna as described in the first aspect or any possible implementation manner of the first aspect is disposed on a housing of the apparatus.
Drawings
Fig. 1 is a schematic structural diagram of a low-profile dual-band WiFi antenna that can be conformal according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a radiation unit according to an embodiment of the present disclosure;
fig. 3 is a schematic return loss curve diagram of a low-profile dual-band WiFi antenna that can be conformal according to an embodiment of the present application;
fig. 4 is a schematic vertical plane view of a low-profile dual-band WiFi antenna that can be conformed according to an embodiment of the present application at 2.44 GHz;
fig. 5 is a schematic vertical plane view of a low-profile dual-band WiFi antenna that can be conformal according to an embodiment of the present application at 5.5 GHz;
fig. 6 is a schematic diagram illustrating a maximum gain curve of a conformal low-profile dual-band WiFi antenna in the entire frequency band according to an embodiment of the present disclosure;
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:
1-radiating element, 11-L-shaped groove, 12-first strip-shaped groove, 13-second strip-shaped groove, 14-third strip-shaped groove, 15-fourth strip-shaped groove, 16-fifth strip-shaped groove, 2-grounding plane, 3-short circuit metal sheet and 4-coaxial feeder line.
Detailed Description
The present invention will be described with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural diagram of a low-profile dual-frequency WiFi antenna that can be conformal according to an embodiment of the present disclosure, and referring to fig. 1, the low-profile dual-frequency WiFi antenna that can be conformal according to the embodiment of the present disclosure includes: radiation element 1 and ground plane 2, radiation element 1 with the parallel fixed connection of ground plane 2, just radiation element 1 with the clearance between ground plane 2 is 2 ~ 3 mm.
In the embodiment of the present application, the ground plane 2 is a rectangular metal sheet, and the length of the ground plane 2 is 57.2mm to 57.8mm, and the width is 37.2mm to 37.8 mm. The metal housing of the electronic device may be used as a ground plane if it is mounted in parallel with the metal housing of the electronic device.
A short-circuit metal sheet 3 is arranged between the radiation unit 1 and the ground plane 2 and used for connecting the radiation unit 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 disposed 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 respectively and fixedly connected to the radiating element 1 and the ground plane 2, and one end of the coaxial feeder 4 is located at a corner position of the radiating element 1.
Specifically, the radiation unit 1 is provided with a feed solder joint of an antenna, the ground plane is provided with an antenna ground solder joint, and the coaxial feeder 4 is respectively and fixedly connected with the feed solder joint and the ground solder joint.
Referring to fig. 2, the radiation unit 1 is a rectangular metal sheet, and the length of the radiation unit 1 is 25.1mm to 25.7mm, and the width of the radiation unit 1 is 23.5mm to 24.1 mm. Be provided with L shape groove 11 and a plurality of bar groove on the radiating element 1, it is a plurality of the bar groove with the minor face parallel arrangement in L shape groove 11, and a plurality of the bar groove is followed the minor face side in L shape groove 11 arrives the marginal side length of radiating element reduces gradually. The L-shaped groove 11 is arranged on one side of the radiation unit 1, and the plurality of strip-shaped grooves are arranged at the corners of the radiation unit 1.
The L-shaped groove 11 is a closed groove, the L-shaped groove 11 is the key for realizing double-frequency work of the antenna, the edge of the rectangular metal sheet is not cut off by the L-shaped groove 11, so that high-frequency current mainly flows to the strip-shaped groove area along the inner side of the L-shaped groove and radiates out, and the whole metal sheet participates in radiation at low frequency.
With further reference to fig. 2, the strip grooves in the present embodiment include a first strip groove 12, a second strip groove 13, a third strip groove 14, a fourth strip groove 15, and a fifth strip groove 16.
The first strip-shaped groove 12, the second strip-shaped groove 13, the third strip-shaped groove 14, the fourth strip-shaped groove 15 and the fifth strip-shaped groove 16 are all semi-closed grooves, one end of each strip-shaped groove is located in the plane of the radiation unit 1, and the opening of the other end of each strip-shaped groove is located at the edge of the radiation unit 1. A plurality of bar grooves are equidistantly arranged, any two adjacent bar grooves are identical in length difference, and each bar groove is identical in width.
That is, the widths of the first, second, third, fourth and fifth linear grooves 12, 13, 14, 15 and 16 are the same, and the intervals between adjacent ones are also the same. The difference in length between the first 12 and second 13 bar grooves is the same as the difference in length between the second 13 and third 14 bar grooves, and so on.
The first strip-shaped groove 12, the second strip-shaped groove 13, the third strip-shaped groove 14, the fourth strip-shaped groove 15 and the fifth strip-shaped groove 16 are key for realizing high-frequency broadband work, and strip-shaped grooves with different sizes and positions are adopted, so that the current in high frequency presents traveling wave characteristics in the area, and the broadband is realized. If the first strip-shaped groove 12, the second strip-shaped groove 13, the third strip-shaped groove 14, the fourth strip-shaped groove 15 and the fifth strip-shaped groove 16 are located in a centralized area in parallel and the edges of the rectangular metal sheets are cut off, the rest parts become oscillators to participate in high-frequency-band radiation and expand high-frequency bandwidth.
Referring to fig. 3, as can be seen from the return loss curve of the low-profile conformal dual-frequency WiFi antenna provided in the embodiment of the present application, the low-profile conformal dual-frequency WiFi antenna provided in the present application has low loss, and can be installed on a device to operate quickly.
As can be seen from fig. 4 and 5, in the 2.44GHz and 5.5GHz bands, it can be seen from the vertical plane directional diagram that the low-profile dual-frequency WiFi antenna provided by the present application can achieve dual frequency bands, and the lobe angle is large.
As can be seen from fig. 6, the gain of the conformal low-profile dual-band WiFi antenna provided in the embodiment of the present application in the whole frequency band is kept at a large value, so that the antenna can achieve a good coverage effect.
According to the embodiment, the low-profile conformal dual-frequency WiFi antenna provided by the embodiment of the application is small in overall size, low in profile and convenient to conformally install on the shell of the equipment. The antenna body comprises the sheetmetal, and is with low costs, is provided with L shape groove 11 and a plurality of bar groove on the radiating element 1, and the setting in L shape groove 11 makes the antenna realize the dual-frenquency characteristic, and the current presents the travelling wave characteristic in bar groove region when the structure in a plurality of bar grooves sets up and makes the high frequency, realizes the broadband of antenna. The antenna only has good standing waves in the working frequency band and is not easily interfered by out-of-band signals. The antenna has high gain and large lobe angle, and can achieve good covering effect.
Corresponding to the embodiment of the 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, the low-profile dual-frequency WiFi antenna provided by the foregoing embodiment is disposed on a housing of the device.
Specifically, the electronic device in this embodiment is an electronic device with a metal shell, and the conformal low-profile dual-frequency WiFi antenna in the above embodiment can be quickly set on the device shell, so that the device can achieve good communication through the characteristics of high gain and large lobe angle of the antenna, and good coverage.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be 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. Also, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Of course, the above description is not limited to the above examples, and technical features that are not described in this application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present application and not for limiting the present application, and the present application is only described in detail with reference to the preferred embodiments instead, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present application may be made by those skilled in the art without departing from the spirit of the present application, and the scope of the claims of the present application should also be covered.
Claims (10)
1. A conformal low-profile dual-frequency WiFi antenna is characterized by comprising a radiation unit and a ground plane, wherein the radiation unit is fixedly connected with the ground plane in parallel, and a gap between the radiation unit and the ground plane is 2-3 mm;
be provided with L shape groove and a plurality of bar groove on the radiating element, it is a plurality of the bar groove with the minor face parallel arrangement in L shape groove, and a plurality of the bar groove is followed the minor face side in L shape groove arrives the marginal side length of radiating element reduces gradually.
2. The conformal low-profile dual-band WiFi antenna of claim 1, wherein 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 opening is located at the edge of the radiating element.
3. The conformable low-profile dual-frequency WiFi antenna of claim 1, wherein the ground plane is a rectangular metal sheet, the ground plane has a length of 57.2 mm-57.8 mm and a width of 37.2 mm-37.8 mm.
4. The conformal low-profile dual-band WiFi antenna of claim 1, wherein the plurality of strip-shaped grooves are arranged at equal intervals, the length difference between any two adjacent strip-shaped grooves is the same, and the width of each strip-shaped groove is the same.
5. The conformal low-profile dual-band WiFi antenna of claim 1, wherein a shorting metal sheet is disposed between the radiating element and the ground plane, the shorting metal sheet is a rectangular metal sheet, the shorting metal sheet has a length of 12.2mm to 12.8mm and a width of 2mm to 3 mm.
6. The conformal low-profile dual-band WiFi antenna as claimed in claim 5, wherein a coaxial feeding line is further disposed between the radiating element and the ground plane, the coaxial feeding line is perpendicular to the radiating element and the ground plane, the coaxial feeding line is fixedly connected to the radiating element and the ground plane, respectively, and one end of the coaxial feeding line is located at a corner position of the radiating element.
7. The conformable low-profile dual-band WiFi antenna of claim 6, wherein the radiating element is disposed with a feed pad of the antenna, the ground plane is disposed with an antenna ground pad, and the coaxial feed line is fixedly connected to the feed pad and the ground pad, respectively.
8. The conformable low-profile dual-band WiFi antenna of claim 1, wherein the radiating element is a rectangular metal sheet, the radiating element has a length of 25.1mm to 25.7mm and a width of 23.5mm to 24.1 mm.
9. The conformable low-profile dual-band WiFi antenna of claim 8, wherein the L-shaped groove is disposed at one side of the radiating element and the plurality of strip-shaped grooves are disposed at corners of the radiating element.
10. A device characterized in that a low profile dual-frequency WiFi antenna conformable as in any one of claims 1 to 9 is provided on a housing of the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910981197.4A CN110620294A (en) | 2019-10-16 | 2019-10-16 | Conformal low-profile dual-frequency WiFi antenna and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910981197.4A CN110620294A (en) | 2019-10-16 | 2019-10-16 | Conformal low-profile dual-frequency WiFi antenna and equipment |
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| Publication Number | Publication Date |
|---|---|
| CN110620294A true CN110620294A (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910981197.4A Pending CN110620294A (en) | 2019-10-16 | 2019-10-16 | Conformal low-profile dual-frequency WiFi antenna and equipment |
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| CN (1) | CN110620294A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040169611A1 (en) * | 2003-02-27 | 2004-09-02 | Filtronic Lk Oy | Multi-band planar antenna |
| 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 |
| 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 |
| 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 |
| 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 |
-
2019
- 2019-10-16 CN CN201910981197.4A patent/CN110620294A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040169611A1 (en) * | 2003-02-27 | 2004-09-02 | Filtronic Lk Oy | Multi-band planar antenna |
| 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 |
| 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 |
| 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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