CN109599661B - Ceramic antenna with controllable directivity - Google Patents
Ceramic antenna with controllable directivity Download PDFInfo
- Publication number
- CN109599661B CN109599661B CN201811417742.9A CN201811417742A CN109599661B CN 109599661 B CN109599661 B CN 109599661B CN 201811417742 A CN201811417742 A CN 201811417742A CN 109599661 B CN109599661 B CN 109599661B
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- CN
- China
- Prior art keywords
- circular metal
- top cover
- ceramic body
- cylindrical ceramic
- metal top
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
Abstract
The invention discloses a ceramic antenna with controllable directivity, which consists of a circular metal floor, a cylindrical ceramic body, a feed probe, a circular metal top cover, a strip-shaped gap and a rotating device, wherein the circular metal top cover is connected with the cylindrical ceramic body through the feed probe; the circular metal top cover is covered on the upper surface of the circular metal floor, two strip gaps are arranged on the circular metal top cover, and a rotating device is arranged between the two strip gaps. The invention can control the radiation directivity of the antenna, thereby being better suitable for different application scenes.
Description
Technical Field
The invention belongs to the field of radio, and particularly relates to a communication antenna.
Background
In wireless communication, antennas are required to uniformly cover each direction in different application scenarios, and are required to enhance signal coverage in a certain direction. Therefore, if the radiation directivity of the antenna can be controlled, the antenna can better adapt to different application scenes, and the antenna has higher application value.
The existing ceramic antenna mostly utilizes the slot to expand the bandwidth of the antenna or realize the controllability of the polarization characteristic of radiation, and the existing design of utilizing the slot to enhance the radiation of the antenna at any azimuth angle is still less.
Disclosure of Invention
The invention aims to avoid the defects of the prior art and provides the ceramic antenna with controllable directivity, so that the radiation directivity of the antenna can be controlled, and different application scenes can be better adapted.
The invention adopts the following technical scheme for solving the technical problems:
the invention relates to a ceramic antenna with controllable directivity, which is characterized by consisting of a circular metal floor, a cylindrical ceramic body, a feed probe, a circular metal top cover, a strip-shaped gap and a rotating device;
the cylindrical ceramic body is positioned at the center of the circular metal floor, and the radius of the cylindrical ceramic body is a quarter wavelength of the working frequency;
the feed probe penetrates through the center of the circular metal floor and is inserted into the cylindrical ceramic body, and the feed probe is used for feeding electricity to the cylindrical ceramic body;
the circular metal top cover covers the upper surface of the cylindrical ceramic body, and two strip-shaped gaps with the length of one half wavelength of the working frequency are arranged on the circular metal top cover;
a rotating device is arranged between the two strip-shaped gaps and in the center of the circular metal top cover; and the circular metal top cover is rotated relative to the center of the cylindrical ceramic body by using the rotating device.
The ceramic antenna is also characterized in that the two strip-shaped gaps are the same in size, are parallel to each other and are centrosymmetric with respect to the circular metal top cover.
When the circular metal top cover is positioned on the cylindrical ceramic body, the radiation of the ceramic antenna is enhanced on two sides perpendicular to the two strip-shaped gaps.
Compared with the prior art, the invention has the beneficial effects that:
the invention enhances the radiation characteristic of the ceramic antenna in a specific horizontal direction by increasing the coupling of the gap of the circular top cover and the ceramic cavity to generate radiation, and can select the enhanced direction by rotating the circular top cover, thereby enabling the antenna to aim at different application scenes, improving the signal intensity of a receiving end and improving the communication quality.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a comparison of return loss of the antenna before and after the antenna is attached to a circular metal cap;
FIG. 4 is a comparison of the radiation pattern of the antenna in the azimuth plane before and after the addition of the circular metal cap;
reference numbers in the figures: 1, round metal floor; 2 cylindrical ceramic body, 3 feed probes, 4 circular metal top covers, 5 band-shaped gaps and 6 rotating devices.
Detailed Description
In this embodiment, as shown in fig. 1 and fig. 2, a ceramic antenna with controllable directivity, taking wlan2.4ghz band as an example, is composed of a circular metal floor 1, a cylindrical ceramic body 2, a feed probe 3, a circular metal top cover 4, a strip-shaped slot 5, and a rotating device 6.
The cylindrical ceramic body 2 is located in the center of the circular metal floor 1 and has a radius of about a quarter wavelength of the operating frequency.
The feed probe 3 passes through the center of the circular metal floor 1 and is inserted into the cylindrical ceramic body 2 to feed it.
A circular metal top cover 4 is arranged close to the upper surface of the cylindrical ceramic body 2, and two strip-shaped gaps 5 with the length of about one half wavelength of the working frequency are arranged on the circular metal top cover 4. The two strip-shaped slits 5 are of equal size, parallel to each other and symmetrical about the centre of the circular metal top cover 4.
The turning device 6 can rotate the circular metal top cover 4 about the center of the cylindrical ceramic body 2, thereby enhancing radiation in any azimuthal direction.
When the circular metal top cover 4 is placed on the cylindrical ceramic body 2, as shown in fig. 3, the return loss of the antenna can be kept low in wlan2.4ghz channel. When a circular metal top cap 4 is placed on the cylindrical ceramic body 2, as shown in fig. 4, the radiation of the ceramic antenna is enhanced on both sides perpendicular to the slot.
Claims (1)
1. A ceramic antenna with controllable directivity is characterized by comprising a circular metal floor (1), a cylindrical ceramic body (2), a feed probe (3), a circular metal top cover (4), a strip-shaped gap (5) and a rotating device (6);
the cylindrical ceramic body (2) is positioned at the center of the circular metal floor (1), and the radius of the cylindrical ceramic body is a quarter wavelength of the working frequency;
the feed probe (3) penetrates through the center of the circular metal floor (1) and is inserted into the cylindrical ceramic body (2) for feeding the cylindrical ceramic body (2);
the circular metal top cover (4) covers the upper surface of the cylindrical ceramic body (2), and two strip-shaped gaps (5) with the length of one-half wavelength of working frequency are arranged on the circular metal top cover (4); the two strip-shaped gaps (5) are the same in size, are parallel to each other and are centrosymmetric about the circular metal top cover (4);
a rotating device (6) is arranged between the two strip-shaped gaps (5) and at the center of the circular metal top cover (4); the circular metal top cover (4) is rotated relative to the center of the cylindrical ceramic body (2) by the rotating device (6);
when the circular metal top cover (4) is positioned on the cylindrical ceramic body (2), the radiation of the ceramic antenna is enhanced on two sides vertical to the two strip-shaped gaps (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417742.9A CN109599661B (en) | 2018-11-26 | 2018-11-26 | Ceramic antenna with controllable directivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417742.9A CN109599661B (en) | 2018-11-26 | 2018-11-26 | Ceramic antenna with controllable directivity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109599661A CN109599661A (en) | 2019-04-09 |
| CN109599661B true CN109599661B (en) | 2020-08-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811417742.9A Active CN109599661B (en) | 2018-11-26 | 2018-11-26 | Ceramic antenna with controllable directivity |
Country Status (1)
| Country | Link |
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| CN (1) | CN109599661B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1389954A (en) * | 2001-06-01 | 2003-01-08 | 菲尔特朗尼克Lk有限公司 | Medium antenna |
| WO2003019718A1 (en) * | 2001-08-30 | 2003-03-06 | Centre National De La Recherche Scientifique (Cnrs) | Circularly polarized dielectric resonator antenna |
| CN104966908A (en) * | 2015-04-28 | 2015-10-07 | 四川省韬光通信有限公司 | Vertical polarization dielectric resonator base station antenna |
| CN105305041A (en) * | 2015-09-27 | 2016-02-03 | 华东交通大学 | Broadband antenna with integration of parasitic unit and slot DR structure |
| CN106229682A (en) * | 2016-10-12 | 2016-12-14 | 哈尔滨工业大学 | A kind of double frequency directional diagram reconstructable dielectric resonator antenna |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872894A (en) * | 2010-04-01 | 2010-10-27 | 电子科技大学 | Medium resonator antenna with reconfigurable directional diagram and phased array thereof |
| US10381735B2 (en) * | 2016-03-21 | 2019-08-13 | Huawei Technologies Co., Ltd. | Multi-band single feed dielectric resonator antenna (DRA) array |
| CN206595391U (en) * | 2017-03-22 | 2017-10-27 | 中国人民解放军国防科学技术大学 | Small-sized omnidirectional's medium resonator antenna |
| CN108390153B (en) * | 2018-02-08 | 2019-12-31 | 南通大学 | Broadband reconfigurable dielectric resonator antenna |
-
2018
- 2018-11-26 CN CN201811417742.9A patent/CN109599661B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1389954A (en) * | 2001-06-01 | 2003-01-08 | 菲尔特朗尼克Lk有限公司 | Medium antenna |
| WO2003019718A1 (en) * | 2001-08-30 | 2003-03-06 | Centre National De La Recherche Scientifique (Cnrs) | Circularly polarized dielectric resonator antenna |
| CN104966908A (en) * | 2015-04-28 | 2015-10-07 | 四川省韬光通信有限公司 | Vertical polarization dielectric resonator base station antenna |
| CN105305041A (en) * | 2015-09-27 | 2016-02-03 | 华东交通大学 | Broadband antenna with integration of parasitic unit and slot DR structure |
| CN106229682A (en) * | 2016-10-12 | 2016-12-14 | 哈尔滨工业大学 | A kind of double frequency directional diagram reconstructable dielectric resonator antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109599661A (en) | 2019-04-09 |
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