A flat waveguide fed two-dimensional beam scanning antenna
A technology of waveguide feeding and beam scanning, which is applied in the directions of antenna arrays, antennas, and slot antennas that are powered independently, can solve the problems of high antenna profile, low power capacity, and narrow working bandwidth, and achieve wide beam scanning range and increase power The effect of capacity and easy processing
Active Publication Date: 2022-06-28
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a flat waveguide-fed two-dimensional beam scanning antenna, which overcomes the shortcomings of the existing helical array antennas, such as high profile, narrow working bandwidth, low power capacity, and uneven microwave transmission, and can be integrated into rows and columns Control the rotation of the helical antenna to realize the two-dimensional scanning of the beam
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[0056] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and embodiments. The following examples are only used to illustrate the present invention, but not to limit the scope of the present invention.
[0057] like figure 1 As shown, the present invention is an all-metal structure and consists of four parts, the first part is a flat waveguide 1, which is a special rectangular waveguide with an elongated broad side; the second part is N baffles 2, each baffle is a solid long rectangular plate ; The third part is M×N outer cavities 3 , each outer cavity is in the shape of a cuboid, and a circular channel with a changing radius is drawn out in the center; the fourth part is M×N short helical antennas 4 . Based on the Cartesian coordinate system, define the positive direction of the z-axis as up, the negative direction of the z-axis as down, the upper and lower distances as the height, the negative direct...
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The invention discloses a flat waveguide feeding two-dimensional beam scanning antenna. The present invention is composed of a flat waveguide, N baffles, M×N external cavities, and M×N short helical antennas; the baffle is a long rectangular plate; the external cavity is a cuboid with a circular channel with a changing radius; N The root baffle is inserted parallel to the x-axis inside the flat waveguide, so that N+1 rectangular channels are formed inside the flat waveguide, and the width of the N-1 rectangular channels in the middle is d; the M×N external cavities have a side length of d The square grids are closely arranged parallel to the xoy plane, and the lower surface of the external cavity is bonded to the upper surface of the flat waveguide; M×N short helical antennas respectively pass through the M×N circular channels of the external cavity, and pass through the flat waveguide in turn The upper waveguide wall, the baffle, and the lower waveguide wall of the flat waveguide. The invention overcomes the disadvantages of the existing helical array antennas, such as high profile, narrow working bandwidth, low power capacity, and uneven microwave transmission, and can control the rotation of the helical antennas in the entire row and column to realize two-dimensional scanning of beams.
Description
technical field [0001] The invention relates to an antenna in the field of high-power microwave technology, in particular to a high-power microwave helical array antenna with two-dimensional beam scanning capability fed by a flat waveguide. Background technique [0002] The high-power microwave antenna is an important tool to radiate the energy generated by the microwave source into space. The performance of the antenna directly affects the application effect of high-power microwave. Under the background of limited development of high-power microwave generation power, it is of great significance to study high-performance high-power microwave antennas. Due to the high power of high-power microwaves, it is difficult for a single antenna to meet the requirements of high gain and high power capacity at the same time. The array antenna can increase the antenna gain by increasing the number of sub-antennas, and can also distribute the energy evenly to multiple sub-antennas to impr...
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IPC IPC(8): H01Q1/50H01Q13/10H01Q3/32H01Q1/52H01Q21/00H01Q21/06
CPCH01Q1/50H01Q13/10H01Q3/32H01Q1/52H01Q21/0006H01Q21/06
Inventor 袁成卫秦洪才张晓萍孙云飞张强许亮
Owner NAT UNIV OF DEFENSE TECH