CN109346822B - Dual-radiation-arm WIFI antenna - Google Patents
Dual-radiation-arm WIFI antenna Download PDFInfo
- Publication number
- CN109346822B CN109346822B CN201811288137.6A CN201811288137A CN109346822B CN 109346822 B CN109346822 B CN 109346822B CN 201811288137 A CN201811288137 A CN 201811288137A CN 109346822 B CN109346822 B CN 109346822B
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- wifi antenna
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- parasitic
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- 230000005855 radiation Effects 0.000 claims abstract description 43
- 230000003071 parasitic effect Effects 0.000 claims abstract description 41
- 230000008878 coupling Effects 0.000 claims abstract description 25
- 238000010168 coupling process Methods 0.000 claims abstract description 25
- 238000005859 coupling reaction Methods 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims description 13
- 230000009977 dual effect Effects 0.000 claims description 8
- 238000002955 isolation Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004891 communication Methods 0.000 abstract description 4
- 230000000295 complement effect Effects 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram 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
- H01Q1/36—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
- H01Q1/12—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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses a dual-radiation-arm WIFI antenna, which comprises a first WIFI antenna radiation arm, a second WIFI antenna radiation arm and a parasitic coupling unit; the parasitic coupling unit is arranged between the first WIFI antenna radiating unit and the second WIFI antenna radiating unit. According to the dual-radiation-arm WIFI antenna, the two mutually perpendicular on-board antennas are adopted, so that the horizontal patterns of the antennas are complementary, the omni-direction in the horizontal direction is achieved, and no dead angle exists in use. Meanwhile, the parasitic coupling unit is arranged in the clearance area, so that the isolation degree between the two WIFI antennas is greatly increased, the technical problem of mutual interference between the two antennas in the prior art is solved, and the radiation performance and the use effect of the antennas are improved. The invention can be widely applied to the field of communication equipment.
Description
Technical Field
The invention relates to the field of communication equipment, in particular to a dual-radiation-arm WIFI antenna.
Background
With the development of technology, bluetooth is a standard of intelligent devices, whether it is a smart phone, a notebook computer or a tablet computer. With the development of the mobile internet, a large number of intelligent wearable devices are now emerging, and the development of supporting these applications requires not only mobile software support, but also support of wireless transmission technology. The antenna is an energy converter, and when transmitting, the antenna converts high-frequency current of the transmitter into space electromagnetic waves; upon reception, the antenna converts the electromagnetic wave intercepted from the space into a high-frequency current, which is fed into the receiver. Antenna design is an important part of the design of a low-power, short-range wireless transceiver device for use in a radio frequency identification system. A good antenna system can optimize the communication distance.
In the prior art, because the layout of the printed circuit board is limited, the interval between two WIFI antennas is very small, so that the two WIFI antennas have a mutual interference phenomenon, and the actual use effect of the antennas is affected.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present invention is to provide a dual radiation arm WIFI antenna, which solves the technical problem of easy mutual interference between two antennas.
The technical scheme adopted by the invention is as follows:
the utility model provides a two radiation arm WIFI antennas, includes first WIFI antenna radiation arm, second WIFI antenna radiation arm and parasitic coupling unit, parasitic coupling unit set up in between first WIFI antenna radiation arm and the second WIFI antenna radiation arm.
Further, the first WIFI antenna radiation arm and the second WIFI antenna radiation arm form an included angle of ninety degrees.
Further, the parasitic coupling element includes a first parasitic radiating arm and a second parasitic radiating arm, where one end of the first parasitic radiating arm and one end of the second parasitic radiating arm are connected and form a ninety degree included angle.
Further, the dual-radiating-arm WIFI antenna further includes a headroom region; the clearance area comprises a first clearance area and a second clearance area, and the first clearance area and the second clearance area form a ninety-degree right angle; the first clearance area is clung to the first WIFI antenna radiation arm; the second clearance area is clung to the second WIFI antenna radiation arm; the first parasitic radiation arm is arranged in a first clearance area; the second parasitic radiating arm is built in a second headroom region.
Further, the first WIFI antenna radiation arm comprises a first feed port and a second feed port; the second WIFI antenna radiation arm comprises a third feed port and a fourth feed port; the parasitic coupling unit comprises a first port and a second port; the second ground feed is adjacent to the first port and is formed at a first spacing from the first port; the third feed port forms a second spacing adjacent the second port.
Further, the dual-radiation-arm WIFI antenna further comprises a substrate, and the headroom area, the first WIFI antenna radiation arm, the second WIFI antenna radiation arm and the parasitic coupling unit are all arranged on the same substrate.
Further, the substrate includes a PCB printed circuit board and/or an FPC printed circuit board.
Further, the first WIFI antenna radiating arm and the second WIFI antenna radiating arm are arranged at the edge position of the substrate.
Further, the whole rectangular structure that is of base plate, first WIFI antenna radiation arm and second WIFI antenna radiation arm correspond the apex angle position that sets up at rectangular structure.
The beneficial effects of the invention are as follows:
according to the dual-radiation-arm WIFI antenna, the two mutually perpendicular on-board antennas are adopted, so that the horizontal patterns of the antennas are complementary, the omni-direction in the horizontal direction is achieved, and no dead angle exists in use. Meanwhile, the parasitic coupling unit is arranged in the clearance area, so that the isolation degree between the two WIFI antennas is greatly increased, the technical problem of mutual interference between the two antennas in the prior art is solved, and the radiation performance and the use effect of the antennas are effectively improved. In addition, through the setting of headroom region for the antenna effectively shields metal, keeps away from the interference of other metal devices, can change resonant frequency according to headroom region's size simultaneously.
In addition, the invention can be widely applied to the field of communication equipment.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a dual-radiating-arm WIFI antenna according to the present invention;
fig. 2 is a graph of reflection parameters of an embodiment of a dual-radiating-arm WIFI antenna according to the invention.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
Referring to fig. 1, a dual-radiating-arm WIFI antenna includes a first WIFI antenna radiating arm 1, a second WIFI antenna radiating arm 2, a parasitic coupling unit 3, a headroom region 4 (including a first headroom region 41 and a second headroom region 42), and a substrate. The first WIFI antenna radiating arm 1, the second WIFI antenna radiating arm 2, the parasitic coupling unit 3 and the headroom area 4 are all arranged on the same substrate.
The substrate comprises a PCB printed circuit board and/or an FPC printed circuit board, and the PCB printed circuit board is adopted in the embodiment.
Specifically, the whole rectangular structure that is of base plate, first WIFI antenna radiation arm 1 and second WIFI antenna radiation arm 2 correspond the apex angle position that sets up at rectangular structure. The first WIFI antenna radiating arm 1 and the second WIFI antenna radiating arm 2 form an included angle of ninety degrees. In this embodiment, the rectangular structure of the PCB substrate and the two on-board antennas (the first WIFI antenna radiating arm 1 and the second WIFI antenna radiating arm 2) are adopted, so that the antenna horizontal patterns are complementary, the omni-directional beneficial effect in the horizontal direction is achieved, and no dead angle exists in use.
Specifically, the first headroom region 41 and the second headroom region 42 are at an angle of ninety degrees, and the parasitic coupling element 3 (including the first parasitic radiating arm 31 and the second parasitic radiating arm 32, also at a right angle of ninety degrees) is disposed within the headroom region 4. The first headroom region 41 is closely attached to the first WIFI antenna radiating arm 1, the second headroom region 42 is closely attached to the second WIFI antenna radiating arm 2, the first parasitic radiating arm 31 is disposed in the first headroom region 41, and the second parasitic radiating arm 32 is disposed in the second headroom region 42. Through the setting of headroom region 4 in this embodiment for first WIFI antenna radiation arm 1 and second WIFI antenna radiation arm 2 effectively shield the interference, if can make the radiation arm keep away from the interference of other metal parts, can change resonant frequency according to headroom region 4's size simultaneously.
Specifically, the first WIFI antenna radiating arm 1 includes a first feeding port a and a second feeding port B, the second WIFI antenna radiating arm 2 includes a third feeding port E and a fourth feeding port F, and the parasitic coupling unit 3 includes a first port C and a second port D. Wherein the second feed port B forms a first pitch BC adjacent to the first port C and the third feed port D forms a second pitch DE adjacent to the second port E. In the prior art, the layout of a PCB is limited, the space between two antennas is very small, so that the two antennas have mutual interference, and the actual use effect is affected. In this embodiment, through setting up parasitic coupling unit 3 and keeping apart first WIFI antenna radiation arm 1 and second WIFI antenna radiation arm 2, can effectively reduce the mutual interference phenomenon between first WIFI antenna radiation arm 1 and the second WIFI antenna radiation arm 2 to the accessible adjusts the size of first interval BC and second interval DE, makes the radiation performance of antenna optimal.
One embodiment of a dual radiating arm WIFI antenna reflects a parametric graph, see fig. 2. The curve 1 is the isolation value between the two WIFI antennas before the parasitic coupling unit is increased, the curve 2 is the isolation value between the two WIFI antennas before the parasitic coupling unit is increased, and the curve 1 and the curve 2 respectively take three sampling points (2.40 GHZ, 2.45GHZ and 2.50 GHZ). As shown in fig. 2, the isolation between the two WIFI antennas is about-8 dB to-9 dB before adding the parasitic coupling element. After the parasitic coupling unit is added, the isolation degree is-20.992 dB when the sampling point is 2.40GHZ, the isolation degree is-20.682 dB when the sampling point is 2.45GHZ, and the isolation degree is-20.992 dB when the sampling point is 2.50GHZ, namely the isolation degree between two WIFI antennas after the parasitic coupling unit is added is about-20 dB. It follows that the isolation between the antennas is increased and the radiation performance of the antennas is optimized. According to the embodiment, the two mutually perpendicular on-board antennas and the parasitic coupling unit are arranged, so that the isolation between the two antennas is increased, the mutual interference phenomenon between the antennas is effectively solved, and the radiation performance and the use effect of the antennas are improved.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.
Claims (7)
1. The dual-radiating-arm WIFI antenna is characterized by comprising a first WIFI antenna radiating arm, a second WIFI antenna radiating arm and a parasitic coupling unit; the parasitic coupling unit is arranged between the first WIFI antenna radiation arm and the second WIFI antenna radiation arm; the first WIFI antenna radiation arm and the second WIFI antenna radiation arm form an included angle of ninety degrees;
the first WIFI antenna radiation arm comprises a first feed port and a second feed port; the second WIFI antenna radiation arm comprises a third feed port and a fourth feed port; the parasitic coupling unit comprises a first port and a second port; the second ground feed is adjacent to the first port and is formed at a first spacing from the first port; the third feed port forms a second spacing adjacent to the second port; and adjusting the radiation performance of the dual-radiation-arm WIFI antenna by adjusting the first interval and the second interval.
2. The dual radiating arm WIFI antenna of claim 1, wherein the parasitic coupling element comprises a first parasitic radiating arm and a second parasitic radiating arm, wherein one end of the first parasitic radiating arm and one end of the second parasitic radiating arm are connected and form a ninety degree included angle.
3. The dual radiating arm WIFI antenna of claim 2, further comprising a headroom region; the clearance area comprises a first clearance area and a second clearance area, and the first clearance area and the second clearance area form a ninety-degree right angle; the first clearance area is clung to the first WIFI antenna radiation arm; the second clearance area is clung to the second WIFI antenna radiation arm; the first parasitic radiation arm is arranged in a first clearance area; the second parasitic radiating arm is built in a second headroom region.
4. The dual radiating arm WIFI antenna of claim 3, further comprising a substrate, wherein the headroom region, the first WIFI antenna radiating arm, the second WIFI antenna radiating arm, and the parasitic coupling element are all disposed on the same substrate.
5. The dual radiating arm WIFI antenna of claim 4, wherein the substrate comprises a PCB printed circuit board and/or an FPC printed circuit board.
6. The dual radiating arm WIFI antenna of claim 4, wherein the first and second WIFI antenna radiating arms are disposed at edge positions of the substrate.
7. The dual radiating arm WIFI antenna of claim 6, wherein the substrate is generally rectangular in configuration; the first WIFI antenna radiating arm and the second WIFI antenna radiating arm are correspondingly arranged at the vertex angle position of the rectangular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811288137.6A CN109346822B (en) | 2018-10-31 | 2018-10-31 | Dual-radiation-arm WIFI antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811288137.6A CN109346822B (en) | 2018-10-31 | 2018-10-31 | Dual-radiation-arm WIFI antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109346822A CN109346822A (en) | 2019-02-15 |
| CN109346822B true CN109346822B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811288137.6A Active CN109346822B (en) | 2018-10-31 | 2018-10-31 | Dual-radiation-arm WIFI antenna |
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| CN (1) | CN109346822B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131195B (en) * | 2019-12-31 | 2022-07-12 | 华为技术有限公司 | Antenna and communication equipment |
| CN111490352A (en) * | 2020-05-28 | 2020-08-04 | 广东小天才科技有限公司 | Circularly polarized positioning antenna and wearable equipment |
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| CN109346822A (en) | 2019-02-15 |
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