CN111987450B - Protective function antenna structure - Google Patents
Protective function antenna structure Download PDFInfo
- Publication number
- CN111987450B CN111987450B CN202010764624.6A CN202010764624A CN111987450B CN 111987450 B CN111987450 B CN 111987450B CN 202010764624 A CN202010764624 A CN 202010764624A CN 111987450 B CN111987450 B CN 111987450B
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- China
- Prior art keywords
- antenna
- lantern ring
- protection
- proximity switch
- antenna structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- 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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- Details Of Aerials (AREA)
Abstract
The invention belongs to the field of electrical performance of radomes, and particularly relates to a protective function antenna structure which adopts a double-protection design form, wherein a proximity switch is arranged between an antenna and a radome wall to form a first protective mechanism, and the proximity switch automatically responds when approaching the radome wall to prevent the antenna from approaching the radome wall; be provided with the protection lantern ring on the antenna, this protection lantern ring prevents that antenna contact antenna house cover wall from causing the damage of antenna, and this protection lantern ring constitutes second protection machanism. The invention belongs to the field of radome electrical performance, and particularly relates to a protective function antenna structure.
Description
Technical Field
The invention belongs to the field of radome electrical performance, and particularly relates to a protective function antenna structure.
Background
Automatic electrical thickness measurement and correction of the radome are important technical guarantees for high-performance electromagnetic window products. The electrical thickness technique is a macroscopic parameter when the electrical size of the material to be measured is far larger than the wavelength, and is an average effect. In order to improve the measurement resolution of the electrical thickness over-tolerance region, the single-point measurement area needs to be as small as possible. The antennas have radiation function, which makes the measurement distance of the antennas impossible to be considered in a large way. The shortest distance between the outer edge of the antenna and the wall of the housing is kept within 10mm, in consideration of various factors. Once the automatic electrical thickness measurement system stalls, the shroud wall quickly impacts the antenna, which can damage not only the horn antenna and the test bridge, but also the product due to excessive instantaneous impact. The traditional protection method is to install a contact type anti-collision switch. The switch is located behind the feedhorn between the shield wall and the antenna. When the measuring system stalls and drives the cover wall to impact the antenna, the measuring system is firstly touched with the switch to trigger the measuring system to forcibly and automatically cut off the power so as to protect the antenna and the cover wall. The method has two defects, one is that any switch has a corresponding contact direction, and when the impact directions are inconsistent, the switch is not powered off; secondly, the inertia is large when the stall is stopped, and even if the stall is powered off, the antenna still can be impacted under the inertia impact, so that the protection capability is weakened.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to improve the protection capability of a measurement system in a stall state, prevent products from irreversible impact damage and reduce the damage degree of an antenna and a measurement bridge circuit.
The technical scheme is as follows: a protective function antenna structure adopts a double-protection design form, a proximity switch is arranged between an antenna and an antenna housing cover wall to form a first protective mechanism, and the proximity switch automatically responds when approaching the antenna housing cover wall to prevent the antenna from approaching the antenna housing cover wall; be provided with the protection lantern ring on the antenna, this protection lantern ring prevents that antenna contact antenna house cover wall from causing the damage of antenna, and this protection lantern ring constitutes second protection machanism.
Preferably, the proximity switch is disposed between the antenna and the radome wall.
Preferably, the protective collar is made of a non-metal soft material, and specifically, the protective collar may be made of a soft non-metal material with a low dielectric constant, including but not limited to paper, foam, various fiber materials, and the like.
Preferably, the protection lantern ring is excessively matched with the horn mouth of the antenna, so that the reliability of combination between the lantern ring and the antenna is guaranteed, and the protection lantern ring is in a lantern ring form.
Preferably, the width of the collar is determined by the distance between the antenna and the wall of the housing, typically half the distance; the front edge of the lantern ring is not higher than the bell mouth surface; the lower edge of the collar should be proximate to the proximity switch so that the proximity switch is triggered while the cover wall contacts the collar.
The beneficial technical effects are as follows: by adopting the structure provided by the invention, the protection capability of the measurement system in a stall state is effectively improved, and the loss in fault is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein, 1-antenna, 2-protective lantern ring, 3-proximity switch, 4-cover wall.
Detailed Description
The invention is described in detail with reference to the accompanying drawings of the specification, and the design concept of the invention is to avoid the hard contact between the cover wall in the stall state and the antenna, buffer the impact force between the cover wall and the antenna, and obviously reduce the damage of the product and the measuring system in the stall state of the measuring system through the structural design on the premise of not changing the performance index of the horn antenna, and especially play an important role in protecting the radome.
As shown in fig. 1, which is a schematic structural diagram of the present invention, the structure adopts a double protection design form, a proximity switch 3 is arranged between an antenna 1 and a radome wall 4 to form a first protection, and the proximity switch 3 automatically responds when approaching the radome wall 4 to prevent the antenna 1 from approaching the radome wall 4, thereby effectively reducing the direct contact between the antenna 1 and the radome wall 4; still be provided with the protection lantern ring 2 on the horn mouth of antenna 1, this protection lantern ring 2 prevents that antenna 1 from contacting antenna house cover wall 4 and causing the damage of antenna, and this protection lantern ring 2 constitutes the second and says the protection.
In the protection structure, a sensor is arranged on the proximity switch 3, the sensor automatically senses the distance between the antenna 1 and the radome wall 4, and when the distance is smaller than a set dangerous distance, the proximity switch 3 is automatically opened to prevent the antenna 1 from continuously moving towards the radome wall.
Meanwhile, the protective lantern ring 2 is excessively matched with the horn mouth of the antenna, the protective lantern ring 2 is in a lantern ring form, the reliability of combination between the lantern ring and the antenna is guaranteed, the width of the lantern ring is determined according to the distance between the antenna and the cover wall, and the distance is usually half, such as about 5 mm; the front edge of the lantern ring is not higher than the bell mouth surface and can be slightly lower by 1 mm; the lower edge of the collar should be proximate the proximity switch so that the cover wall 4 contacts the collar while the proximity switch 3 is activated.
The invention provides a horn antenna structure, which buffers the impact force between the shield wall and the outer side of an antenna through a lantern ring made of soft non-metal materials, and avoids the damage of the shield wall and the deformation of a test bridge circuit. The lantern ring is made of a low dielectric constant material, so that the electromagnetic field distribution of the horn antenna cannot be influenced, and the performance index of the antenna cannot be changed.
Claims (7)
1. A protection function antenna structure which characterized in that: the structure adopts a double-protection design form, a proximity switch is arranged between the antenna and the radome wall to form a first protection mechanism, a position sensor is arranged on the proximity switch, the sensor automatically senses the distance between the antenna and the radome wall, and when the distance is smaller than a set dangerous distance, the proximity switch is automatically opened to prevent the antenna from continuously moving towards the radome wall, so that the antenna is prevented from approaching the radome wall; be provided with the protection lantern ring on the antenna, this protection lantern ring prevents that antenna contact antenna house cover wall from causing the damage of antenna, and this protection lantern ring constitutes second protection machanism.
2. A guard function antenna structure according to claim 1, characterized in that: and a rubber protective sleeve is arranged at the top end of the proximity switch.
3. A guard function antenna structure according to claim 1, characterized in that: the protective lantern ring is excessively matched with the horn mouth of the antenna.
4. A guard function antenna structure according to claim 3, characterized in that: the thickness of the collar is half of the distance between the antenna and the cover wall.
5. The safeguard function antenna structure according to claim 4, characterized in that: the front edge of the lantern ring is not higher than the bell mouth surface; the lower edge of the collar is proximate to the proximity switch.
6. A guard function antenna structure according to any of claims 5, wherein: the protective lantern ring is made of soft non-metal materials with low dielectric constants.
7. A guard function antenna structure according to any of claim 6, wherein: the protective lantern ring is made of paper, foam or fiber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010764624.6A CN111987450B (en) | 2020-07-31 | 2020-07-31 | Protective function antenna structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010764624.6A CN111987450B (en) | 2020-07-31 | 2020-07-31 | Protective function antenna structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111987450A CN111987450A (en) | 2020-11-24 |
| CN111987450B true CN111987450B (en) | 2021-05-28 |
Family
ID=73444933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010764624.6A Active CN111987450B (en) | 2020-07-31 | 2020-07-31 | Protective function antenna structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111987450B (en) |
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| JP3162271B2 (en) * | 1995-08-31 | 2001-04-25 | 三菱電機株式会社 | Compound guidance device |
| US8761663B2 (en) * | 2004-01-07 | 2014-06-24 | Gilat Satellite Networks, Ltd | Antenna system |
| KR100985048B1 (en) * | 2010-04-28 | 2010-10-04 | 삼성탈레스 주식회사 | Circular cylindrical array antenna device |
| CN102142618B (en) * | 2010-12-23 | 2013-09-25 | 北京古大仪表有限公司 | Radar lever meter horn antenna with cleaning device |
| CN103000995A (en) * | 2012-12-12 | 2013-03-27 | 洛阳双瑞橡塑科技有限公司 | Combined antenna housing |
| FR2999814B1 (en) * | 2012-12-14 | 2018-04-13 | Airbus Operations | RADOME PROTECTION SYSTEM FOR RADOME AND ASSOCIATED MOUNTING METHOD |
| DE102014204385A1 (en) * | 2014-03-11 | 2015-09-17 | Robert Bosch Gmbh | A radome-free microwave sensor, method of incorporating a radome-free microwave sensor into a vehicle, and combining a vehicle component with a radome-free microwave sensor |
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| CN104332705B (en) * | 2014-10-16 | 2017-05-10 | 西安电子工程研究所 | Integral type airborne millimeter wave radar antenna cover |
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| US10535919B2 (en) * | 2016-05-24 | 2020-01-14 | Kymeta Corporation | Low-profile communication terminal and method of providing same |
| CN107171071A (en) * | 2017-05-16 | 2017-09-15 | 南京铁道职业技术学院 | A kind of communication user external equipment protection device |
| US10151635B1 (en) * | 2017-06-08 | 2018-12-11 | Raytheon Company | Real time correction of optical window thermal gradients |
| CN108461916B (en) * | 2018-02-13 | 2020-04-17 | 广东通宇通讯股份有限公司 | Broadband flexible antenna housing of microwave antenna |
| EP3611797A1 (en) * | 2018-08-16 | 2020-02-19 | BAE SYSTEMS plc | A tessellated polyhedral structure partially transparent to radio frequency signals |
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| DE102019200912A1 (en) * | 2019-01-24 | 2020-07-30 | Robert Bosch Gmbh | Radome assembly for a radar sensor for motor vehicles |
| CN210074154U (en) * | 2019-04-29 | 2020-02-14 | 四川一诺高分子材料科技有限公司 | High wave permeability antenna house of impact resistance unmanned aerial vehicle |
| CN210111020U (en) * | 2019-05-09 | 2020-02-21 | 泰兴市东盛通讯器材有限公司 | Antenna anti-interference device |
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2020
- 2020-07-31 CN CN202010764624.6A patent/CN111987450B/en active Active
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| CN111987450A (en) | 2020-11-24 |
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