Frequency selective surface radome bandwidth compensation method

Abstract

The invention discloses a frequency selective surface radome bandwidth compensation method, relates to the field of microwave technology and aircraft stealth technology, and in particular to a frequency selective surface radome bandwidth compensation method, which is applied to the design of frequency selective surface radomes that can cater to the requirements of aircraft stealth properties. The method comprises the following steps: firstly constructing a frequency selective surface radome structure, setting a resonant frequency and a maximum incoming angle of a frequency band, the maximum incoming angle determining the effective dielectric constant of a bandwidth compensation dielectric layer, the effective dielectric constant of the bandwidth compensation dielectric layer and the resonant frequency of the frequency band determining the structure parameters of the laminated structure of the dielectric layer; the bandwidth compensation dielectric layer adopting the laminated structure which is composed of two media having different dielectric constants. The method effectively addresses the problem of deformation of the bandwidth of the frequency selective surface radome due to changes of the incoming angles, makes up for the defects and deficiency of prior bandwidth compensation methods, and can be used in the optimization of the structures of frequency selective surface radomes.

Description

technical field [0001] The invention belongs to the field of microwave technology and aircraft stealth technology, and relates to a frequency selective surface radome bandwidth compensation method, which is applied to the design of frequency selective surface radome meeting the stealth performance requirements of aircraft. Background technique [0002] The frequency selective surface radome is a type of electromagnetic window that meets the requirements of the electromagnetic stealth performance of the aircraft. It has the electromagnetic filtering characteristics of "high transmission" for the self-guided electromagnetic wave and "high reflection" for the enemy's detection electromagnetic wave. Generally, in order to meet the large-angle scanning detection requirements of the radar antenna, the filtering characteristics of the frequency selective surface radome need to be stable within the scanning range of 0-70°. Expressed as: Resonant frequency f 0 Remaining stable, the ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of the lack of engineering solutions for frequency selective surface radome bandwidth compensation in the prior art, and to invent a frequency selective surface radome bandwidth compensation method, which uses a bandwidth compensation medium layer loaded on the outside of the frequency selective surface array A scheme for bandwidth compensation of frequency selective surface radome

The method effectively solves the problem that the bandwidth of the frequency-selective surface radome is distorted with the change of the incident angle, and makes up for the shortcomings and deficiencies of the existing bandwidth compensation methods that cannot be applied in engineering. It is a frequency-selective surface radome bandwidth compensation method with engineering feasibility , providing a feasible engineering solution for frequency selective radome bandwidth compensation

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