Broadband Coaxial High Power Microwave tem‑tm 01 mode switching antenna
A TEM-TM01, high-power microwave technology, applied in waveguide devices, radiation element structure, electrical components, etc., can solve the problem that the bandwidth cannot meet the requirements, and achieve the effect of increased power capacity, simple structure, and small reflection
Inactive Publication Date: 2018-01-19
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
These mode-switching antennas have both advantages and disadvantages, which are mainly reflected in: 1. The existing high-power microwave mode-switching antenna technology still cannot fully meet the increasingly urgent application requirements of high-power microwave development in terms of bandwidth. More than 30% relative bandwidth; 2. Guaranteed higher energy transmission efficiency in a wider frequency, especially the bandwidth with a transmission efficiency of more than 90% cannot meet the requirements; 3. Less involved in the mode conversion antenna with a power capacity of more than 4GW
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[0066] The National University of Defense Technology designed the broadband coaxial high power microwave TEM-TM as mentioned above 01 Mode-switching antenna, working in L-band 1.33-1.78GHz, minimum working frequency f 1 1.33GHz, the highest operating frequency is f 2 1.78GHz. Calculate and select the high-power microwave injection port according to the formula (1), the outer radius of the coaxial inner conductor is r=57mm, the inner radius of the coaxial outer conductor is R=95mm, the materials of the coaxial inner conductor and the coaxial outer conductor are both stainless steel, and the thickness is at least It only needs to satisfy the mechanical strength under the vacuum condition. The thickness recommended by the present invention is 7.5 mm. The treatment methods for other parts involving the thickness of the metal are the same as here. The distance between the first support rod combination and the high-power microwave injection port l0=61.55mm, the distance between th...
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The invention, which belongs to the field of the high-power microwave technology, particularly relates to a broadband coaxial high-power microwave TEM-TM01-mode change-over antenna, especially to a TEM-TM01-mode change-over antenna working at a high power level. The antenna is composed of a coaxial inner conductor, a first support rod combination unit, a second support rod combination unit, a third support rod combination unit, a coaxial outer conductor, an opening-angle horn, and a dielectric lens. Compared with the prior art, the antenna has advantages of simple structure and low reflection; the power capacity can be improved substantially; and the width of the frequency band with high transmission frequency can be improved substantially. The antenna can be applied to the high-power microwave-mode change-over switch radiation output system.
Description
technical field [0001] The invention belongs to the technical field of high-power microwaves, in particular to a broadband coaxial high-power microwave TEM-TM 01 Mode-switching antennas, especially a TEM-TM operating at high power levels 01 Mode switching antenna. Background technique [0002] The application requirements of high-power microwave determine the development of high-power microwave technology in the direction of high pulse energy, high repetition frequency, and wide spectrum coverage. The ultimate goal is to improve the output capability of microwave. The main directions of current research are to increase the output peak power of a single microwave source, increase the pulse width of the output microwave, improve the beam conversion efficiency of the microwave source, and increase the spectrum coverage of the microwave source while keeping the above microwave core parameters basically unchanged. Wait. It can be seen from the analysis that the methods to incr...
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IPC IPC(8): H01P1/16H01Q1/36
CPCH01P1/16H01Q1/36
Inventor 李国林樊玉伟邱永峰舒挺
Owner NAT UNIV OF DEFENSE TECH