CN109560385B - Broadband ceramic antenna with seamless metal sleeve - Google Patents
Broadband ceramic antenna with seamless metal sleeve Download PDFInfo
- Publication number
- CN109560385B CN109560385B CN201811417755.6A CN201811417755A CN109560385B CN 109560385 B CN109560385 B CN 109560385B CN 201811417755 A CN201811417755 A CN 201811417755A CN 109560385 B CN109560385 B CN 109560385B
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- China
- Prior art keywords
- metal sleeve
- ceramic body
- cylindrical ceramic
- antenna
- metal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0485—Dielectric resonator antennas
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- Waveguide Aerials (AREA)
Abstract
The invention discloses a broadband ceramic antenna with a seamless metal sleeve, which consists of a round metal floor, a cylindrical ceramic body, a metal sleeve and a feed probe; the cylindrical ceramic body is positioned at the center of the circular metal floor, the feed probe penetrates through the center of the circular metal floor and is inserted into the cylindrical ceramic body, and the metal sleeve is sleeved in the middle of the cylindrical ceramic body. The invention can increase the bandwidth of the antenna without increasing the ceramic resonator and slotting, thereby enabling the bandwidth of the ceramic antenna to cover a plurality of different wireless communication systems and being easy to process.
Description
Technical Field
The invention belongs to the field of radio, and particularly relates to a communication antenna.
Background
With the continuous development of wireless communication systems, communication antennas are required to cover more and more communication frequency bands, and therefore, a broadband design is required.
The ceramic antenna is a dielectric resonator antenna, and the antenna can form a plurality of resonant frequencies under different resonant modes, and because the bandwidth of each resonant frequency is narrow, a large stop band can be formed between two adjacent resonant frequencies, so that a large communication channel is difficult to cover. Some existing dielectric antennas with metal sleeves mainly use a slot on the sleeve to implement circular polarization radiation of the dielectric antenna, but at present, no solution for expanding bandwidth by using a metal sleeve exists.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a broadband ceramic antenna with a seamless metal sleeve, so that the bandwidth of the antenna can be increased under the conditions of not changing the structure of a ceramic resonator and not slotting the sleeve, the ceramic antenna can cover more different communication systems, and the processing cost of the ceramic antenna is reduced.
The invention adopts the following technical scheme for solving the technical problems:
the invention relates to a broadband ceramic antenna with a seamless metal sleeve, which is characterized by consisting of a round metal floor, a cylindrical ceramic body, a metal sleeve and a feed probe;
the cylindrical ceramic body is positioned at the center of the circular metal floor, the radius of the cylindrical ceramic body is one-quarter wavelength of the working frequency, and the height of the cylindrical ceramic body is three-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 metal sleeve is cylindrical and is sleeved in the middle of the cylindrical ceramic body, and the height of the metal sleeve is half of the wavelength of the working frequency.
The broadband ceramic antenna is also characterized in that the metal sleeve is not electrically connected with the circular metal floor.
The metal sleeve is seamless.
The position of the metal sleeve on the cylindrical ceramic body is adjustable according to the impedance matching requirement of the antenna.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, a resonance cavity is formed in the area surrounded by the metal sleeve, so that a new resonance is formed between two different resonance frequencies of the dielectric antenna, a larger bandwidth is formed, the bandwidth of the antenna can be increased under the conditions that a ceramic resonance body is not increased and a slot is not required, further more communication frequency bands are covered, the processing cost of the sleeve is reduced, and the sleeve is easy to process.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a graph of return loss comparison of the antenna before and after the metal sleeve is applied;
reference numbers in the figures: 1, round metal floor; 2 a cylindrical ceramic body; 3 a metal sleeve; 4 feeding the probe.
Detailed Description
In this embodiment, as shown in fig. 1, a broadband ceramic antenna with a seamless metal sleeve, taking a WLAN 5GHz band as an example, is composed of a circular metal floor 1, a cylindrical ceramic body 2, a metal sleeve 3, and a feed probe 4.
The cylindrical ceramic body 2 is located in the center of the circular metal floor 1, and has a radius of about one quarter wavelength of the operating frequency, i.e., 12mm, and a height of about three quarters wavelength of the operating frequency, i.e., 50 mm.
The feed probe 4 passes through the center of the circular metal floor 1 and is inserted into the cylindrical ceramic body 2 to feed it.
The metal sleeve 3 is cylindrical, the radius of the metal sleeve is the same as that of the cylindrical ceramic body, and the height of the metal sleeve 3 is about a half wavelength of the working frequency, namely 30 mm. The metal sleeve 3 is not electrically connected with the circular metal floor 1, is positioned in the middle of the cylindrical ceramic body, and the relative position of the metal sleeve 3 can be adjusted according to the impedance matching requirement of the antenna. The cavity enclosed by the metal sleeve 3 can form a new resonance. The metal sleeve 3 has no gap.
In a specific implementation, as shown in fig. 2, when the metal sleeve 3 is not provided, the cylindrical ceramic body 2 forms two resonances at 5.2GHz and 6GHz, but the distance between the two resonance frequencies is too large and the bandwidth thereof is narrow to form a large bandwidth.
When the metal sleeve 3 is applied, the antenna forms a new resonance at 5.6GHz and together with the two resonances of the original cylindrical ceramic cavity 2 produces a larger bandwidth, as shown in fig. 2.
Claims (1)
1. A broadband ceramic antenna with a seamless metal sleeve is characterized by comprising a round metal floor (1), a cylindrical ceramic body (2), a metal sleeve (3) and a feed probe (4);
the cylindrical ceramic body (2) is positioned at the center of the circular metal floor (1), the radius of the cylindrical ceramic body is one quarter wavelength of the working frequency, and the height of the cylindrical ceramic body is three quarters wavelength of the working frequency;
the feed probe (4) 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 metal sleeve (3) is cylindrical and is sleeved in the middle of the cylindrical ceramic body (2), and the height of the metal sleeve (3) is half wavelength of working frequency; the position of the metal sleeve (3) on the cylindrical ceramic body (2) is adjustable according to the impedance matching requirement of the antenna;
the metal sleeve (3) is in non-electrical connection with the round metal floor (1);
the metal sleeve (3) is seamless.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417755.6A CN109560385B (en) | 2018-11-26 | 2018-11-26 | Broadband ceramic antenna with seamless metal sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417755.6A CN109560385B (en) | 2018-11-26 | 2018-11-26 | Broadband ceramic antenna with seamless metal sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109560385A CN109560385A (en) | 2019-04-02 |
| CN109560385B true CN109560385B (en) | 2021-02-05 |
Family
ID=65867398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811417755.6A Active CN109560385B (en) | 2018-11-26 | 2018-11-26 | Broadband ceramic antenna with seamless metal sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109560385B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115101930B (en) * | 2022-07-15 | 2022-11-15 | 广东工业大学 | Dual-frequency satellite navigation antenna with edge-loaded resonant branches |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100333474B1 (en) * | 1999-11-24 | 2002-04-25 | 안병엽 | Ceramic dielectric antenna attaching high permittivity material |
| GB2360133B (en) * | 2000-03-11 | 2002-01-23 | Univ Sheffield | Multi-segmented dielectric resonator antenna |
| FI118403B (en) * | 2001-06-01 | 2007-10-31 | Pulse Finland Oy | Dielectric antenna |
| FR2844399A1 (en) * | 2002-09-09 | 2004-03-12 | Thomson Licensing Sa | DIELECTRIC RESONATOR TYPE ANTENNAS |
| US7292204B1 (en) * | 2006-10-21 | 2007-11-06 | National Taiwan University | Dielectric resonator antenna with a caved well |
| US8063848B2 (en) * | 2008-12-02 | 2011-11-22 | Bae Systems Information And Electronic Systems Integration Inc. | X, Ku, K band omni-directional antenna with dielectric loading |
| CN102544723A (en) * | 2012-02-20 | 2012-07-04 | 浙江嘉康电子股份有限公司 | Method for producing ceramic dielectric antenna with multi-metal sides |
| CN105390809A (en) * | 2015-11-17 | 2016-03-09 | 西安电子工程研究所 | Broadband dielectric resonator antenna based on planar monopole patch excitation |
| CN105428817A (en) * | 2015-12-15 | 2016-03-23 | 天津职业技术师范大学 | Bidirectional radiation antenna with elliptic cylindrical dielectric resonator |
| CN106898869B (en) * | 2017-03-22 | 2022-10-04 | 中国人民解放军国防科学技术大学 | High-gain directional radiation dielectric resonator antenna |
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2018
- 2018-11-26 CN CN201811417755.6A patent/CN109560385B/en active Active
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| Publication number | Publication date |
|---|---|
| CN109560385A (en) | 2019-04-02 |
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