Large X-band broadband frequency phase scanning antenna array

An X-band, broadband technology, applied in the field of large-scale X-band broadband frequency swept array antennas, to achieve the effects of reducing mutual coupling, convenient processing, and high power

Active Publication Date: 2014-07-30
国工科技集团有限公司
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  • Application Information

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Problems solved by technology

Due to the mutual constraints of the scanning angle, operating bandwidth and slow-wave line loss of the ...

Method used

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  • Large X-band broadband frequency phase scanning antenna array
  • Large X-band broadband frequency phase scanning antenna array
  • Large X-band broadband frequency phase scanning antenna array

Examples

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Embodiment Construction

[0027] refer to Figure 1-Figure 5 . A large-scale X-band broadband frequency-phase scanning array antenna, including: a microwave box 1 for placing T / R components, an m-column antenna unit array 2, an m-1 column of metal grid bars 31, an antenna reflector 3, and m frequency-scanning The slow wave line sealing box 30 and the antenna installation support box 6. Wherein, the microwave box 1 is used to house the T / R assembly, which is used for signal transmission and reception, and the T / R assembly includes a phase shifter for phase scanning of the azimuth plane. The m frequency-sweeping slow-wave line sealing boxes 30 are all placed in the antenna installation support box 6 through the slot 4 . m columns of antenna unit arrays 2 and m−1 columns of metal grid bars 31 are all embedded and mounted on the antenna reflector 3 . figure 1 , figure 2 Among them, the m-column antenna unit array 2 is arranged in a triangular grid, and the triangular grid arrangement method is t...

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Abstract

The invention provides a large X-band broadband frequency phase scanning antenna array. M columns of antenna unit arrays (2) are arranged in a triangular lattice mode, every two columns are staggered by half an antenna unit and arranged in a spaced mode to form the arrays, and m-1 columns of metal grids (31) are evenly arranged in the lattice of the m columns of antenna unit arrays; m columns of antenna unit arrays and m columns of U-shaped air strip frequency scanning slow wave lines (5) correspond one to one to form a frequency scanning antenna array, each column of U-shaped air strip frequency scanning slow wave line is simulated by a T/R assembly, power distribution is determined according to the power amplitude distribution ratio needed by each output port (7), structural forms of an air strip line and a branch coupler (14) are adopted, and the phase gradient needed by the antenna unit frequency scanning is provided; a broadband phase matching network (8) is introduced to a directly communicated end or a coupling end of each slow wave line, a coupler and the broadband phase matching network act together, so that slope factors, which change with frequency, of output phases of the two output ports of the branch coupler can keep consistent.

Description

technical field [0001] The invention relates to a large-scale X-band broadband frequency-phase-scan array antenna with an aperture size of 1400×700 mm, especially a two-dimensional electronically scanned array that uses phase scanning on the azimuth plane and frequency scanning on the elevation plane. The size of the antenna array unit is 64×18, and the number of units reaches 1152 X-band broadband frequency-phase scanning array antenna. Background technique [0002] Since the 1970s, with the advent of one-dimensional phased scanning antennas, the design of three-coordinate radars has been simplified and performance has been improved; with the continuous advancement of technology and the increasing demand, phased array three-coordinate radars have also Gradually developed from the use of one-dimensional phase-scan antenna to the use of two-dimensional phase-sweep antenna. At present, two-dimensional phase-scanned three-coordinate radar has become the mainstream of three-coo...

Claims

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Application Information

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IPC IPC(8): H01Q1/50H01Q21/00
Inventor 陈斌赵玉国吴映锋吴杰黄先知王欣史浩卿海李富军许小玲
Owner 国工科技集团有限公司
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