Ultra wideband waveguide slot array unit
A waveguide slot and ultra-wideband technology, applied in the field of communication, can solve problems such as difficult adjustment, narrow antenna working bandwidth, and difficulty in mutual coupling compensation, so as to achieve the effect of reducing mutual coupling
Inactive Publication Date: 2013-12-11
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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Problems solved by technology
[0004] In order to solve the problems of narrow working bandwidth of general waveguide slot array antennas, difficulty in mutual coupling compensation after array formation, and difficult adjustment, the present invention provides an ultra-wideband waveguide slot array antenna unit, the working bandwidth of standing wave and pattern exceeds 40%, And the large-scale antenna array formed by this unit can achieve good standing wave performance and directional diagram technical indicators without mutual coupling compensation. At the same time, the metal ridges added by this unit can be used for waveguide narrow-side slot arrays in another frequency band design, enabling a large dual-band waveguide slot array design
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[0026] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and do not limit the present invention.
[0027] Such as figure 1 As shown, an ultra-broadband waveguide slot array unit includes a feed waveguide 1 and an overmode waveguide 2, an ultra-broadband waveguide slot array unit includes a feed waveguide 1, an overmode waveguide 2, a feed waveguide 1 and an overmode waveguide The center of the lower end surface of the waveguide 2 is connected, and the upper surface of the overmode waveguide 2 is cut with 2 rows×2 columns of radiation slots 4, 5, 6, 7, and the upper surface of the overmode waveguide 2 is divided into 2 rows×2 Three spacers 8, 9, 10 are installed between the intervals of the radiation gaps 4, 5, 6, and 7 of the columns, and two radiation gaps are arranged betwe...
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The invention relates to the technical field of communication, and more particularly discloses an ultra wideband waveguide slot array unit, which comprises a feed waveguide and an overmoded waveguide that are connected up and down; a cavity is reserved in the middle of the overmoded waveguide; the upper surface of the overmoded waveguide is provided with 2 rows*2 lines of radiation slots in a cutting way; three separation blades are arranged among the 2 rows*2 lines of radiation slots at intervals; the separation blades are arranged on the upper surface of the overmoded waveguide; and two radiation slots are arranged between every two separation blades. According to the invention, a novel ridged overmoded waveguide slot structure is adopted, so that ultra wideband operation of antenna units is realized simply, compactly and smartly; the working bandwidths of standing wave and a directional diagram of each antenna are both over 40 percent, and the isolation degree among the antenna units when the units are combined into a large-sized array is ensured, so that antennas of the large-sized array hardly adopt a cross-coupling compensation measure; meanwhile, the separation blades can be used as a waveguide of a narrow-sideseam array antenna, therefore dual polarization or dual frequency operation is realized.
Description
technical field [0001] The invention relates to the technical field of communication, in particular to an ultra-wideband waveguide slot array unit. Background technique [0002] The waveguide slot array antenna has no aperture shielding effect and energy radiation leakage, and can precisely control the current distribution of the antenna aperture, so that it is easy to achieve ultra-low sidelobes. At the same time, it has the characteristics of small size, light weight, high caliber efficiency, and large power capacity, so it has very broad application prospects in airborne fire control radar, guidance, communication, telemetry, remote sensing, astronomy, and television broadcasting. At present, the working bandwidth of the waveguide slot array becomes the bottleneck of the application of the antenna. Therefore, it is of great practical significance to develop an ultra-wideband waveguide slot array element antenna. [0003] At present, the working bandwidth of the slotted w...
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IPC IPC(8): H01Q13/20H01Q1/52H01Q21/00H01Q21/24H01Q21/30
Inventor 崔奉云赵鹏杨春任冬梅李林翠简荣华王强庄馗
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS