An active phased array antenna based on a cellular skeleton and an array composition method thereof

Abstract

The invention discloses an active phased array antenna based on a honeycomb skeleton and an array forming method thereof. The number of the honeycomb and the number of the antenna units in the honeycomb are calculated according to the front scale. Generating each cellular coordinate point, and closely arranging each cellular in the cellular antenna array; Generating a random submatrix in a honeycomb, namely a submatrix circle; A subarray circle is randomly rotate and installed in each honeycomb; The pattern of cellular antenna array is calculated by substituting the average pattern of antennaelements. Repeat the above steps until the array results meet the requirements. The random distribution of antenna elements in the subarray circle and the random rotation of the subarray produce the antenna array with strong randomness of antenna element distribution, effectively destroy the superposition of the pattern scanning grating lobe in the radiation space, and weaken the scanning gratinglobe.

Description

technical field [0001] The invention relates to an active phased array radar technology, in particular to an active phased array antenna based on a honeycomb skeleton and an array formation method thereof. Background technique [0002] With the rapid development of modern radar technology, the requirements of radar in space surveillance and detection, theater early warning and attack assessment, combat operation plan and combat plan require active phased array antennas to develop in the direction of large-scale and broadband work. (The electrical size is the physical size of the antenna relative to the working frequency wavelength) to improve system performance such as radar resolution and power. Although the cost of phased array radar has dropped significantly with the development of science and technology and technological progress, it is still daunting. Huge equipment and power consumption are important factors affecting the application of phased array. How to make the a...

AI Technical Summary

Problems solved by technology

The limited field of view scanning phased array antenna increases the spacing between antenna elements and sacrifices the scanning ability of the antenna array to achieve the purpose of sparse active channels. This method has a narrow application range and a limited active channel sparse ratio; A certain proportion of sparse elements is used. This method can sparse the number of antenna elements and active channels in a large proportion, and effectively suppress the scanning grating lobes. However, the sparse array design method is difficult, and the sparse antenna array has different shapes and is difficult to process, assemble, and Positioning; using irregular sub-arrays to break the periodicity of sub-array arrangements can also achieve sparse active channels and suppress scanning grating lobes, but the composition of irregular sub-arrays is difficult, and it is not easy to implement for large-scale active phased array projects

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