CN113381164B - Back-feed coupling WIFI antenna - Google Patents
Back-feed coupling WIFI antenna Download PDFInfo
- Publication number
- CN113381164B CN113381164B CN202110387183.7A CN202110387183A CN113381164B CN 113381164 B CN113381164 B CN 113381164B CN 202110387183 A CN202110387183 A CN 202110387183A CN 113381164 B CN113381164 B CN 113381164B
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- Prior art keywords
- wifi antenna
- dielectric substrate
- main radiator
- rectangular groove
- backfeed
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- 230000008878 coupling Effects 0.000 title claims abstract description 7
- 238000010168 coupling process Methods 0.000 title claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 7
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 239000004020 conductor Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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Classifications
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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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a back-feed coupling WIFI antenna, which comprises a main radiator formed on the top of a dielectric substrate; the grounding end is formed at the bottom of the dielectric substrate; the coaxial feed end penetrates through the dielectric substrate through a through hole, an inner conductor of the coaxial feed end is connected with the main radiator, and an outer conductor of the coaxial feed end is connected with the grounding end; the main radiator is provided with an opening. The invention has the advantages that the problem that the traditional side feeding is not beneficial to antenna installation is solved by adopting a back feeding mode; the problem that a traditional WIFI antenna needs a large antenna size is solved through a coupling mode, and meanwhile the size of an antenna slot in a metal shell is reduced.
Description
Technical Field
The invention relates to the technical field of electronic information, in particular to a back-feed coupling WIFI antenna.
Background
In the field of wireless local area networks, WIFI has a great market prospect as a mainstream communication protocol, and thus the market has higher and higher requirements for WIFI antennas. At present, the types of WIFI antenna structures on the market are various, and the WIFI antenna structures comprise spring plate forms, printed circuit board forms, flexible circuit board forms and the like. The existing WIFI antenna is mainly in an external or internal mode. External antennas such as rod antennas need to be independently debugged and installed, are large in size and high in cost, and cannot be used in some scenes. Therefore, the WIFI antenna with a small structure and low cost will become a new market demand.
Disclosure of Invention
To the above-mentioned problems existing in the prior art, a backfeed coupled WIFI antenna is now provided.
The specific technical scheme is as follows:
a backfeed coupled WIFI antenna, comprising: the main radiator is formed on the top of the dielectric substrate; the grounding end is formed at the bottom of the dielectric substrate; the coaxial feed end penetrates through the dielectric substrate through a through hole, an inner conductor of the coaxial feed end is connected with the main radiator, and an outer conductor of the coaxial feed end is connected with the grounding end; the main radiator is provided with a groove.
Preferably, the grooves include a first rectangular groove and a second rectangular groove.
Preferably, the center of the first rectangular groove coincides with the center of the main radiator.
Preferably, one end of the second rectangular groove is communicated with the first rectangular groove, the other end of the second rectangular groove is communicated with the edge of the main radiator, and an opening is formed at the edge of the main radiator.
Preferably, the first rectangular groove is 8mm long and 6.6mm wide.
Preferably, the second rectangular groove is 6mm long and 2.2mm wide.
Preferably, the ground terminal is an open circular ring conductor, and one end of the open circular ring conductor is connected with the outer conductor of the coaxial feed terminal.
Preferably, the dielectric substrate is made of FR4 material.
Preferably, the main radiator and the ground terminal are printed on the dielectric substrate.
Preferably, the resonant frequency of the WIFI antenna is 2.4-2.48 Ghz.
The technical scheme has the following advantages or beneficial effects: the problem that the traditional side feeding is not beneficial to antenna installation is solved by adopting a back feeding mode; the problem that a traditional WIFI antenna needs a large antenna size is solved through a coupling mode, and meanwhile the size of an antenna slot in a metal shell is reduced.
Drawings
Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings. The drawings, however, are for illustration and description only and are not to be construed as limiting the scope of the invention.
FIG. 1 is an overall schematic diagram of an embodiment of the present invention;
FIG. 2 is a top view of an embodiment of the present invention;
FIG. 3 is a S11 performance test chart of an embodiment of the present invention;
fig. 4 is an S11 test chart of other values of the width of the first rectangular groove in the embodiment of the present invention;
fig. 5 is a bottom view of an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
The invention comprises the following specific technical scheme:
a backfeed coupled WIFI antenna, as shown in fig. 1, comprising: a main radiator 2 formed on the top of the dielectric substrate 1; a grounding terminal 3 formed at the bottom of the dielectric substrate 1; the coaxial feed end penetrates through the dielectric substrate 1 through a through hole 6, an inner conductor 8 of the coaxial feed end is connected with the main radiator 2, and an outer conductor 7 of the coaxial feed end is connected with a grounding end; the main radiator 2 is provided with a groove.
In a preferred embodiment, the recesses include a first rectangular recess 4 and a second rectangular recess 5.
In a preferred embodiment, the center of the first rectangular slot 4 coincides with the center of the main radiator.
In a preferred embodiment, as shown in fig. 2, the second rectangular slot 5 has one end connected to the first rectangular slot and the other end connected to the edge of the main radiator, and an opening is formed at the edge of the main radiator.
In a preferred embodiment, the first rectangular recess 4 is 8mm long and 6.6mm wide.
In a preferred embodiment, the second rectangular recess 5 is 6mm long and 2.2mm wide.
Specifically, as shown in FIG. 3, when the first rectangular groove 4 is 8mm long and 6.6mm wide and the second rectangular groove 5 is 6mm long and 2.2mm wide, the S11 ≦ -10dB bandwidth of the antenna is 2.4GHz-2.48GHz, and the center frequency is 2.44GHz.
Further, as shown in fig. 4, when the width (denoted as D) of the first rectangular groove 4 is changed, the center frequency and the bandwidth of the antenna are both shifted, which specifically includes:
when D =6.0mm, the center frequency is 2470MHz, and the bandwidth of S11< -10dB is 2430MHz-2510MHz;
when D =6.2mm, the central frequency is 2460MHz, and the bandwidth of S11< -10dB is 2420MHz-2500MHz;
when D =6.4mm, the center frequency is 240MHz, and the bandwidth of S11< -10dB is 2410MHz-2490MHz;
when D =6.8mm, the center frequency is 2430MHz, and the bandwidth of S11< -10dB is 2390MHz-2470MHz;
when D =7.0mm, the center frequency is 2420MHz, and the bandwidth of S11< -10dB is 2380MHz-2460MHz; d =7.2mm, the center frequency is 2410MHz, and the bandwidth of S11< -10dB is 2370MHz-2445MHz.
It can be seen that the first rectangular groove 4 is 8mm long and 6.6mm wide and the second rectangular groove 5 is 6mm long and 2.2mm wide, which is the best value in this embodiment.
In a preferred embodiment, as shown in fig. 5, the ground terminal 3 is an open-loop conductor, and one end of the open-loop conductor is connected to the outer conductor 7 of the coaxial feeding terminal.
In a preferred embodiment, the dielectric substrate 1 is made of FR4 material.
In a preferred embodiment, the main radiator 2 and the ground terminal 3 are printed on the dielectric substrate 1.
In a preferred embodiment, the resonant frequency of the WIFI antenna is 2.4Ghz-2.48Ghz.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (7)
1. A feed-back coupling WIFI antenna, comprising:
the main radiator is formed on the top of the dielectric substrate;
the grounding end is formed at the bottom of the dielectric substrate;
the coaxial feed end penetrates through the dielectric substrate through a through hole, an inner conductor of the coaxial feed end is connected with the main radiator, and an outer conductor of the coaxial feed end is connected with the grounding end;
the main radiator is provided with a groove;
the grooves comprise a first rectangular groove and a second rectangular groove;
the center of the first rectangular groove is superposed with the circle center of the main radiator;
one end of the second rectangular groove is communicated with the first rectangular groove, the other end of the second rectangular groove is communicated with the edge of the main radiating body, and an opening is formed in the edge of the main radiating body;
the dielectric substrate is circular, the outer contour of the main radiator and the dielectric substrate are concentric circles, and the radius of the outer contour of the main radiator is smaller than that of the outer contour of the grounding end in the projection direction.
2. The backfeed-coupled WIFI antenna of claim 1, wherein said first rectangular slot is 8mm long and 6.6mm wide.
3. The backfeed-coupled WIFI antenna of claim 1, wherein said second rectangular slot is 6mm long and 2.2mm wide.
4. The backfeed coupled WIFI antenna of claim 1, wherein the ground terminal is an open ring conductor, and one end of the open ring conductor is connected to the outer conductor of the coaxial feed terminal.
5. The backfeed-coupled WIFI antenna of claim 1, wherein said dielectric substrate is FR4 material.
6. The backfeed coupled WIFI antenna of claim 1, wherein the main radiator and the ground are printed on the dielectric substrate.
7. The backfeed coupled WIFI antenna of claim 1, wherein a resonant frequency of said WIFI antenna is 2.4Ghz-2.48Ghz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110387183.7A CN113381164B (en) | 2021-04-08 | 2021-04-08 | Back-feed coupling WIFI antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110387183.7A CN113381164B (en) | 2021-04-08 | 2021-04-08 | Back-feed coupling WIFI antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113381164A CN113381164A (en) | 2021-09-10 |
| CN113381164B true CN113381164B (en) | 2023-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110387183.7A Active CN113381164B (en) | 2021-04-08 | 2021-04-08 | Back-feed coupling WIFI antenna |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244614A (en) * | 2015-10-29 | 2016-01-13 | 中国船舶重工集团公司第七二四研究所 | Broadband capacitive feed miniature microstrip paster antenna |
| CN106532244A (en) * | 2016-11-03 | 2017-03-22 | 云南大学 | Multiband circular slot antenna for substrate integrated waveguide |
| CN108448244A (en) * | 2018-05-04 | 2018-08-24 | 南京航空航天大学 | A Compact Omnidirectional Circularly Polarized Reconfigurable Antenna Working on BDS-1 S |
| CN111600122A (en) * | 2020-05-13 | 2020-08-28 | 中天宽带技术有限公司 | Patch antenna |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8373597B2 (en) * | 2006-08-09 | 2013-02-12 | Spx Corporation | High-power-capable circularly polarized patch antenna apparatus and method |
| CN105261827A (en) * | 2015-09-10 | 2016-01-20 | 天津工业大学 | RFID reader microstrip antenna |
| CN106785393A (en) * | 2016-12-19 | 2017-05-31 | 中国电子科技集团公司第二十研究所 | A kind of double frequency based on plane single pole sub antenna lobe millimeter wave micro-strip antenna wide |
| CN207818892U (en) * | 2018-02-26 | 2018-09-04 | 成都信息工程大学 | stub matched microstrip antenna |
| CN207818893U (en) * | 2018-02-26 | 2018-09-04 | 成都信息工程大学 | Microstrip antenna |
| CN208723104U (en) * | 2018-10-08 | 2019-04-09 | 河北锋彩科技有限公司 | A kind of S-band ultra-wideband through-wall radar antenna |
| CN210468115U (en) * | 2019-11-20 | 2020-05-05 | 南京林业大学 | A rectangular slotted high-gain microstrip antenna fed by coplanar waveguide |
| CN212571341U (en) * | 2020-07-21 | 2021-02-19 | 无锡国芯微电子系统有限公司 | Broadband slotted patch antenna |
-
2021
- 2021-04-08 CN CN202110387183.7A patent/CN113381164B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244614A (en) * | 2015-10-29 | 2016-01-13 | 中国船舶重工集团公司第七二四研究所 | Broadband capacitive feed miniature microstrip paster antenna |
| CN106532244A (en) * | 2016-11-03 | 2017-03-22 | 云南大学 | Multiband circular slot antenna for substrate integrated waveguide |
| CN108448244A (en) * | 2018-05-04 | 2018-08-24 | 南京航空航天大学 | A Compact Omnidirectional Circularly Polarized Reconfigurable Antenna Working on BDS-1 S |
| CN111600122A (en) * | 2020-05-13 | 2020-08-28 | 中天宽带技术有限公司 | Patch antenna |
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