Dual-polarization transmission surface with terminating filter circuit to control electrical characteristics and design method thereof

Abstract

The invention discloses a dual-polarization transmission surface with terminating a filter circuit to control electrical characteristics and a design method of the dual-polarization transmission surface. The transmission surface comprises a dual-polarization receiving antenna array, the filter circuit and a transmitting antenna array, wherein the receiving antenna array is used for transmitting received electromagnetic wave signals to the filter circuit, the filter circuit is used for realizing regulation and control of amplitude, phase and frequency characteristics of a transmission surface,and the transmitting antenna array is connected with a filter circuit terminal. The invention provides a new concept of controlling the electrical characteristics of incident electromagnetic waves byusing a circuit, a single-band or multi-band transmission surface with filtering characteristics can be realized by reasonably designing the circuit, and a frequency selection surface with a reflection band and a transmission band can be obtained; the dichroic mirror can be used as a secondary reflector of the Cassegrain antenna.

Description

technical field [0001] The invention belongs to the field of transmissive frequency selective surfaces, in particular to a dual-polarized transmissive surface and a design method thereof, which are terminated with a filter circuit to control electrical characteristics. Background technique [0002] The frequency selective surface is a one-dimensional or two-dimensional infinite periodic array composed of independent units, which is essentially a spatial filter circuit, which is used to select the frequency of incident electromagnetic wave transmission and reflection to achieve band-pass or band-stop filtering characteristics . Transmissive frequency selective surfaces have important applications in transmission arrays, dichroic mirrors, radomes and radar stealth because they can obtain high transmission efficiency and good phase adjustment ability at the same time. [0003] In order to obtain a good frequency selection capability and a wide range of phase adjustment capabil...

AI Technical Summary

Problems solved by technology

The structure of the transceiver antenna is simple, the phase adjustment ability is strong, but the frequency selection ability is relatively poor. The transmission unit designed with the transceiver antenna has a slow transition sideband in the upper and lower sidebands of the transmission frequency band, and it is impossible to obtain a steep out-of-band suppression effect.

The multi-layer frequency selective surface structure is relatively complex, and it is difficult to realize the transmission surface with two polarizations having different transmission frequency bands

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