An electromagnetic structure with both stealth and communication functions

Abstract

The invention discloses an electromagnetic structure with stealth and communication functions at the same time. The electromagnetic structure comprises a first substrate, a second substrate, a first metal pillar and a second metal pillar, the first substrate is located directly above the second substrate and the substrates are vertically aligned, the lower surface of the first substrate is provided with a first active FSS with a broadband absorption characteristic and four first varactor diodes connected to the first active FSS, the upper surface of the second substrate is provided with a feeder network, the lower surface of the second substrate is provided with a second active FSS with a transmissive function and four second voltage-controlled varactor diodes connected to the second active FSS, the first active FSS and the second active FSS are connected through the first metal pillar and the second metal pillar, the first metal pillar is grounded, the second metal pillar is connectedto a voltage adjustable power supply, and the capacitances of a first voltage-controlled varactor diodes and the second varactor diodes is changed when the voltage of the power supply is changed. Theelectromagnetic structure has the advantages that the multi-frequency communication can be realized in a stealth frequency band, and the communication performance is high.

Description

technical field [0001] The invention relates to an electromagnetic structure, in particular to an electromagnetic structure with both stealth and communication functions. Background technique [0002] Radar stealth technology is an indispensable electronic countermeasure technology in modern warfare. One of its main technical approaches is to apply electromagnetic structures with stealth functions in aircraft, and absorb the radar wave energy incident on the surface of the aircraft through the electromagnetic structure, reducing radar Scattering cross-sectional area, thereby achieving stealth in the radar band. The traditional electromagnetic structure with stealth function utilizes the electromagnetic response characteristics of materials such as ferrite, metal micropowder and barium hexanoate to absorb electromagnetic waves. The electromagnetic structure with stealth function can only achieve strong absorption at one or more corresponding frequency resonance points, and t...

AI Technical Summary

Problems solved by technology

However, the position of the transmission window in the above-mentioned existing electromagnetic structure with both stealth and communication functions is fixed, and only single-frequency point communication can be realized, and the coverage of the communication frequency band is not wide, which affects the adjustability and intelligence of the radar communication function.

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