CN220856927U - Broadband high-power electromagnetic environment simulation antenna - Google Patents
Broadband high-power electromagnetic environment simulation antenna Download PDFInfo
- Publication number
- CN220856927U CN220856927U CN202321975961.5U CN202321975961U CN220856927U CN 220856927 U CN220856927 U CN 220856927U CN 202321975961 U CN202321975961 U CN 202321975961U CN 220856927 U CN220856927 U CN 220856927U
- Authority
- CN
- China
- Prior art keywords
- antenna
- ridge
- horn
- electromagnetic environment
- environment simulation
- 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.)
- Active
Links
- 238000004088 simulation Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Waveguide Aerials (AREA)
Abstract
The utility model discloses a broadband high-power electromagnetic environment simulation antenna, which comprises a double-ridge horn antenna, wherein a ridge is added on the horn antenna, and the double-ridge horn antenna is divided into a horn section and a coaxial ridge waveguide converter; the utility model has the advantages that: on the premise of ensuring bandwidth and power capacity, the antenna gain is improved, and the antenna is simple in design and easy to popularize.
Description
Technical Field
The utility model relates to an analog antenna, in particular to a broadband high-power electromagnetic environment analog antenna, and belongs to the field of analog antennas.
Background
The antenna gain range is 20+/-3 dBi to be realized in the frequency band of 1-18 GHz. An ideal antenna system is non-dispersive, requiring the lower the antenna gain flatness, the better. The current situation of the antenna is investigated: the narrow side wall of the traditional horn antenna is removed, the weight can be reduced, the gain and the high-frequency directional diagram can be improved, the narrow side wall is changed into 5 narrow metal sheets which are uniformly distributed, a lower VSWR and a flat gain curve can be obtained, but the typical value of the gain is 12dBi, and the average power is 300W. In the aspect of high power application, a great technical problem faced by ultra-wideband antenna design is to prevent high voltage breakdown of the antenna under the condition of high power, and a common method is to place the antenna or a part of the antenna in a sealed container and fill inert gas or insulating medium to improve the capability of the antenna to resist high voltage breakdown, but this increases the weight and design difficulty of the antenna in an intangible way. Namely, the gain of the existing antenna fluctuates in the range of 6-18dBi, and the requirements of high gain and gain flatness cannot be met; in the investigation of standing waves (VSWR), the VSWR of the existing related antennas is basically between 2 and 3, and the technical index requirements of the VSWR within 2 cannot be met; for index requirements of bearing 1000W continuous wave of power in 1-3GHz, the current common antenna products in the market can only bear 300W of power at most in 1-3GHz, and the power capacity is far lower than the technical index requirements.
The dual-ridge horn antenna is formed by adding ridges on the basis of the horn antenna, and is a common ultra-wideband antenna. The main structure can be divided into two parts: horn segments and coaxial ridge waveguide converters. The horn section mainly realizes the function of impedance transition from the double-ridge waveguide to the free space, and the smoothness of the impedance transition directly influences the return loss and other performances of the antenna. The length of the horn should be greater than half the lowest operating wavelength to ensure that higher order modes are not excited during impedance transformation. The ridges have equal spacing between ridge waveguide sections and are opened in an exponential manner in the horn section, so that the working frequency band is widened. The intensity of the energy that the antenna can withstand, i.e. the power capacity. The power capacity can be verified through field distribution and power spectrum, and the methods of increasing the caliber effective area, adopting different feed forms and the like are the most typical methods for researching the power capacity at present. Because the antenna power capacity and breakdown are affected by many factors, the field intensity maximum of the dual-ridge horn antenna occurs at the nearest ridge spacing and sharp structure, and thus the antenna design requires special design of the ridge spacing and shape of the dual-ridge horn antenna. It is generally difficult to simultaneously consider good standing wave characteristics and radiation characteristics in an ultra-wideband range, and various performance indexes need to be weighed to meet the design requirements. Based on the double-ridge horn antenna, the technical difficulties of gain flatness, low frequency high gain, high power capacity and the like, which are proposed by technical index decomposition, are solved by changing the ridge shape, adding lenses and the like. Based on the above principle, consider that the system has not only high and low gain requirements (20 dB, 10 dB) but also gain flatness requirements (±3 dB) for the antenna. The antenna about 1GHz is required to realize gain of 20dB plus or minus 3dB, the caliber of the antenna low-frequency band (especially 1-3 GHz) antenna is close to 1.6m.1 m, the longitudinal length is close to 2m, and the design, the processing and the transportation and the installation of the antenna are all more challenging.
Disclosure of Invention
The utility model aims to design a broadband high-power electromagnetic environment simulation antenna, which improves the antenna gain on the premise of ensuring the bandwidth and the power capacity by carrying out ridge slotting treatment and loading a dielectric lens on a ridge horn antenna, and has simple antenna design and easy popularization.
The technical scheme of the utility model is as follows:
The broadband high-power electromagnetic environment simulation antenna comprises a double-ridge horn antenna, wherein a ridge is added on the horn antenna, and the double-ridge horn antenna is divided into two parts: horn segments and coaxial ridge waveguide converters, the horn segments mainly realize the function of impedance transition from double ridge waveguides to free space, and the smoothness of the impedance transition directly influences the return loss and other performances of the antenna.
The length of the horn section is larger than half of the lowest working wavelength so as to ensure that a higher order mode is not excited in the impedance conversion process.
The ridge is equal in ridge waveguide section interval and is opened in a horn section in an exponential form, so that the working frequency band is widened; the coaxial ridge waveguide converter is a rectangular part at the feed of the horn.
The horn mouth surface of the horn section is provided with a lens structure, so that the uniformity of a caliber field can be improved, and the gain of the antenna is further improved.
The intensity of the energy that the antenna can withstand, i.e. the power capacity. The power capacity can be verified through field distribution and power spectrum, and the methods of increasing the caliber effective area, adopting different feed forms and the like are the most typical methods for researching the power capacity at present. Because the antenna power capacity and breakdown are affected by many factors, the field intensity maximum of the dual-ridge horn antenna occurs at the nearest ridge spacing and sharp structure, and thus the antenna design requires special design of the ridge spacing and shape of the dual-ridge horn antenna.
It is generally difficult to simultaneously consider good standing wave characteristics and radiation characteristics in an ultra-wideband range, and various performance indexes need to be weighed to meet the design requirements. Based on the double-ridge horn antenna, the technical difficulties of gain flatness, low frequency high gain, high power capacity and the like, which are proposed by technical index decomposition, are solved by changing the ridge shape, adding lenses and the like.
The beneficial effects of the utility model are as follows: on the premise of ensuring bandwidth and power capacity, the antenna gain is improved, and the antenna is simple in design and easy to popularize.
The utility model is further described below with reference to the drawings and examples.
Drawings
FIG. 1 is a cross-sectional view of a wideband high power electromagnetic environment simulation antenna according to an embodiment of the present utility model;
Fig. 2 is a schematic perspective view of a wideband high-power electromagnetic environment simulation antenna according to an embodiment of the present utility model.
Description of the embodiments
The following description of the preferred embodiments of the present utility model is provided for the purpose of illustration and explanation only and is not intended to limit the present utility model.
Examples
As shown in fig. 1-2, a wideband high-power electromagnetic environment simulation antenna comprises a dual-ridge horn antenna 1, wherein the dual-ridge horn antenna 1 is formed by adding a ridge 2 on the basis of a horn antenna, is a common ultra-wideband antenna, and has a main structure divided into two parts: horn segments and coaxial ridge waveguide converters (rectangular sections at the horn feed), which mainly fulfil the function of impedance transitions from double ridge waveguides to free space, the smoothness of which will directly influence the return loss and other properties of the antenna.
The length of the horn section is larger than half of the lowest working wavelength so as to ensure that a higher order mode is not excited in the impedance conversion process. The ridges have equal intervals in ridge waveguide sections (waveguide sections, ridges are added in rectangular waveguides at the feed position of the antenna in fig. 2), and the ridges are opened in an exponential form in a horn section, so that the working frequency band is widened;
The intensity of the energy that the antenna can withstand, i.e. the power capacity. The power capacity can be verified through field distribution and power spectrum, and the methods of increasing the caliber effective area, adopting different feed forms and the like are the most typical methods for researching the power capacity at present. Because the antenna power capacity and breakdown are affected by many factors, the field intensity maximum of the dual-ridge horn antenna occurs at the nearest ridge spacing and sharp structure, and thus the antenna design requires special design of the ridge spacing and shape of the dual-ridge horn antenna.
It is generally difficult to simultaneously consider good standing wave characteristics and radiation characteristics in an ultra-wideband range, and various performance indexes need to be weighed to meet the design requirements. Based on the double-ridge horn antenna, by changing the ridge shape (in an exponential gradual change shape and adding a slot structure), adding a lens (the lens is a dielectric material, as shown in fig. 1 and 2, and is added at the horn mouth surface, the aperture field uniformity is improved, and the antenna gain is further improved), and the technical difficulties of gain flatness, low frequency high gain, high power capacity and the like, which are proposed by technical index decomposition, are solved.
Based on the above principle, consider that the system has not only high and low gain requirements (20 dB, 10 dB) but also gain flatness requirements (±3 dB) for the antenna. The antenna about 1GHz is required to realize gain of 20dB plus or minus 3dB, the caliber of the antenna low-frequency band (especially 1-3 GHz) antenna is close to 1.6m.1 m, the longitudinal length is close to 2m, and the design, the processing and the transportation and the installation of the antenna are all more challenging. For this purpose, an antenna form as in fig. 2 is designed.
Claims (2)
1. The broadband high-power electromagnetic environment simulation antenna is characterized in that: the dual-ridge horn antenna is characterized by comprising a dual-ridge horn antenna, wherein a ridge is added on the horn antenna, and the dual-ridge horn antenna is divided into a horn section and a coaxial ridge waveguide converter; the ridges are equal in interval between ridge waveguide sections, are opened in an exponential form in a horn section, and are added with slot structures; the coaxial ridge waveguide converter is a rectangular part at the feed position of the loudspeaker; and a lens structure is arranged at the horn mouth surface of the horn section.
2. The wideband high-power electromagnetic environment simulation antenna according to claim 1, wherein: the length of the horn section is greater than half of the lowest operating wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321975961.5U CN220856927U (en) | 2023-07-26 | 2023-07-26 | Broadband high-power electromagnetic environment simulation antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321975961.5U CN220856927U (en) | 2023-07-26 | 2023-07-26 | Broadband high-power electromagnetic environment simulation antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220856927U true CN220856927U (en) | 2024-04-26 |
Family
ID=90746959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321975961.5U Active CN220856927U (en) | 2023-07-26 | 2023-07-26 | Broadband high-power electromagnetic environment simulation antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220856927U (en) |
-
2023
- 2023-07-26 CN CN202321975961.5U patent/CN220856927U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203674385U (en) | High gain broadband dielectric lens Vivaldi antenna | |
| CN109546348B (en) | Novel miniaturized broadband SW-SIW horn antenna and design method thereof | |
| CN104993243A (en) | Ultra-wide-band horn antenna | |
| Liu et al. | Single-layer high gain endfire antenna based on spoof surface plasmon polaritons | |
| CN114336058A (en) | Frequency-electricity-adjustable double-trapped-wave miniaturized ultra-wideband microstrip antenna | |
| CN114039211A (en) | Ka frequency band substrate integrated waveguide holographic leaky-wave antenna based on liquid crystal | |
| CN113991297B (en) | Wide-angle beam scanning antenna array based on super-surface and artificial surface plasmon | |
| CN108429010B (en) | Ultra-wideband double-end-fire antenna based on modulation super-surface | |
| CN111969307A (en) | Symmetrical multi-groove terahertz 6G communication application frequency band antenna | |
| CN113013628B (en) | Compact high-efficiency reflection-free leaky-wave antenna | |
| CN111224228A (en) | Stepped aperture coupling broadband antenna with double-layer non-uniform super-surface structure | |
| CN102891364B (en) | Ultra-wide spectrum rear-feed shock pulse reflection surface antenna system | |
| CN220856927U (en) | Broadband high-power electromagnetic environment simulation antenna | |
| CN212485554U (en) | Terahertz antenna suitable for 6G communication frequency band | |
| CN103094676A (en) | Ultra wide band antenna provided with T-shaped structure and matched branches and having band elimination characteristic | |
| CN111900542A (en) | High-frequency high-gain broadband dielectric resonator antenna | |
| Kumar et al. | Design of coplanar waveguide-feed pentagonal-cut ultra-wide bandwidth fractal antenna and its backscattering | |
| CN113675594B (en) | High-efficiency leaky-wave antenna | |
| CN110165348B (en) | High-power millimeter wave TE01Mode filter | |
| CN102394336A (en) | Branch knot loading helical antenna | |
| CN113904117B (en) | Broadband high-gain microstrip patch antenna | |
| CN116031600B (en) | Stop band suppression structure based on impedance matching artificial surface plasmon | |
| CN214848987U (en) | Near-field microwave conversion device for microwave-driven ions | |
| CN218123723U (en) | 4 to 50GHz double-ridge horn antenna | |
| AU2020102459A4 (en) | A Novel Multi-Frequency Broadband Microstrip Antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |