Large-angle hybrid feed frequency scanning antenna based on standard rectangular waveguide
A rectangular waveguide, large-angle technology, applied in leaky waveguide antennas, antennas, waveguide-type devices, etc., can solve problems such as the influence of the phase of the coupling slot that has not been proposed, and achieve the effects of reducing volume, reducing standing waves, and reducing side lobes
Inactive Publication Date: 2018-06-12
NANJING UNIV OF SCI & TECH
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Document 2 (Song Xiaodi, Wang Wei, Jin Mouping, et al. Design of a Ku-band mixed-feed frequency-sweeping antenna array[J]. Journal of Radio Science, 2016, 31(2).) realized large-angle scanning, but did not propose The influence of the coupling slit on the phase, and the method of phase correction
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[0030] As shown in the figure, the large-angle slow-wave line frequency-swept antenna based on a standard rectangular waveguide includes a standard rectangular waveguide slow-wave line 1, a lower microstrip 3, a middle foam layer 4, and an upper microstrip 5 arranged in sequence from top to bottom. The standard rectangular waveguide slow wave line 1, the lower microstrip 3, the middle foam layer 4 and the upper microstrip 5 are parallel to each other, and the projections of the lower microstrip 3, the middle foam layer 4 and the upper microstrip 5 on the bottom surface are consistent with the standard The slow wave lines 1 of the rectangular waveguide overlap. The standard rectangular waveguide slow wave line 1 includes a straight waveguide section and an elbow 2 connecting the straight waveguide section, the elbow 2 is a 180° elbow on the E plane, and different cracks 6 are set at the center of the straight waveguide section. The parameters of 6 satisfy the Taylor weighted di...
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The invention discloses a large-angle hybrid feed frequency scanning antenna based on a standard rectangular waveguide. The antenna comprises a standard rectangular waveguide slow wave line, a lower micro-strip, a middle foam layer and an upper micro-strip, wherein the standard rectangular waveguide slow wave line, the lower micro-strip, the middle foam layer and the upper micro-strip are sequentially arranged from top to bottom. The standard rectangular waveguide slow wave line, the lower micro-strip, the middle foam layer and the upper micro-strip are parallel to each other. The projectionsof the lower micro-strip, the middle foam layer and the upper micro-strip on a bottom surface coincide with the standard rectangular waveguide slow wave line. The standard rectangular waveguide slow wave line comprises a linear waveguide section and an elbow connected with the linear waveguide section. The elbow is an E-surface 180-degree elbow. The center of the linear waveguide section is provided with a crack and the parameters of the crack meet the Taylor weighting distribution. The antenna provided by the invention has the advantages of high gain, large-angle scanning, low minor lobe, high efficiency, low loss, excellent radiation characteristic, compact structure, convenient machining and the like. Through scaling structural parameters, the antenna is suitable for different wave bands such as microwaves and millimeter waves.
Description
technical field [0001] The invention belongs to the field of frequency-sweeping antennas, in particular to a large-angle hybrid feeding frequency-scanning antenna based on a standard rectangular waveguide. Background technique [0002] As a type of electronically scanned antenna, the frequency-swept antenna has the advantages of rapid changes in beam pointing and beam shape, easy formation of multiple beams, simple structure, and low cost. It has been equipped with troops as early as the 1960s and has been widely used. However, since the feed of the frequency-sweep antenna generally adopts a slow-wave line-series feed structure, for example: Document 1 (Ni Jing. The application and research of frequency-sweep antenna array with multiple functions, high efficiency and high frequency [D]. Nanjing University of Science and Technology, 2012 .) This array uses a general rectangular waveguide to form a slow wave line structure, and the microstrip patch antenna constitutes the radi...
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IPC IPC(8): H01Q1/36H01Q13/20H01P9/00
CPCH01Q1/36H01P9/00H01Q13/206
Inventor 王昊荣志鹏陈飞鸿张耀丹
Owner NANJING UNIV OF SCI & TECH