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Design method of network amplitude-phase decomposable shaped array antenna

An array antenna and design method technology, which is applied to antennas, antenna arrays, and devices for manufacturing antenna arrays, etc., can solve problems such as large workload and complex process, and achieve the effect of reducing design difficulty, strong operability, and improving design efficiency.

Active Publication Date: 2019-11-26
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Claims
  • Application Information

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Problems solved by technology

This kind of design idea can get the final result more comprehensively and accurately, but the process is complicated and the workload is heavy

Method used

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  • Design method of network amplitude-phase decomposable shaped array antenna
  • Design method of network amplitude-phase decomposable shaped array antenna

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] A method for designing a shaped array antenna whose network amplitude and phase can be decomposed is used for beamforming design of an array whose number of elements is M, and M≥8; the method includes the following steps:

[0032] Step 1: Calculate the antenna element spacing d according to the range of the pattern to be shaped, d≤λ / (1+sinθ), where λ is the wavelength in the air, and θ is the shape-forming range; use genetic algorithm, neural network, simulated annealing and other optimization algorithms to calculate the amplitude and phase distribution of the ideal array, where the amplitude distribution is A 01 ,A 02 ,…A 0M , each amplitude value is the logarithmic value normalized by the maximum amplitude value, generally a negative value, the unit is dB, and the phase distribution is P 01 ,P 02 ,…P 0M , the unit of eac...

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Abstract

The invention discloses a design method of a network amplitude-phase decomposable shaped array antenna, and belongs to the technical field of microwave array antennas. The method comprises the steps of firstly, calculating the amplitude-phase distribution of an ideal array through an optimization algorithm, selecting a proper antenna unit, and calculating the amplitude-phase distribution of the array under the condition of antenna mutual coupling by adopting a software; and secondly, carrying out antenna subarray division, wherein, on one hand, the antenna unit is optimally selected and designed, and the concerned electrical indexes of the antenna unit is calculated; and on the other hand, the amplitude and phase distribution of a feed network in each subarray is determined, the maximum amplitude value is found, and the whole feed network is subjected to multi-stage decomposition. The method not only considers the mutual coupling characteristics and the phase differences of the antennaunits, but also simplifies the design difficulty of the network, and has obvious technical advancement compared with the prior art.

Description

technical field [0001] The present invention relates to the technical field of microwave array antennas, in particular to a design method for a shaped array antenna whose network amplitude and phase can be decomposed, which is suitable for all kinds of beam-forming array antennas, especially for shaped beams with a large number of ports In the design of array antenna or power division network with inconsistent amplitude and phase of each port. Background technique [0002] At present, the beamforming feed network used in the array antenna mainly has the following design methods: [0003] 1. After analyzing the amplitude and phase data of each port in the array antenna, a unified design is carried out, that is, no hierarchy. The amplitude and phase distribution of the feed network designed in this way is relatively intuitive, but this design method is more complicated, especially when the number of antenna array elements is large, it is necessary to jointly consider the rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00
CPCH01Q21/0087
Inventor 韩国栋高冲吴旭孙良刘扬段永强
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP