1-bit reconfigurable broadband multi-polarized reflective array unit

Abstract

The invention provides a 1-bit reconfigurable broadband multi-polarized reflective array unit comprising a top metal layer, an intermediate metal layer, a bottom metal layer, four metalized via holes,an upper dielectric plate and a lower dielectric plate, wherein the top metal layer is disposed on the upper bottom surface of the upper dielectric plate and are provided with four circular feed terminals having the same size; the intermediate metal layer is disposed between the upper and lower dielectric plates; the bottom metal layer is disposed on the lower bottom surface of the lower dielectric plate; the four metalized via holes are connected to the respective feed terminals and the bottom metal layer through the intermediate metal layer and the upper and lower dielectric plates; the bottom metal layer is provided with metal patches connected with the metalized via holes; metal microstrip lines having the same length extend from respective metal patches to the adjacent metalized viaholes; and a switching diode is connected between the metal microstrip lines of the every adjacent metalized via holes.

Description

technical field [0001] The invention relates to artificial electromagnetic medium and reflection array antenna technology, in particular to a 1-bit reconfigurable broadband multi-polarization reflection array unit. Background technique [0002] Reflectarray antennas are gaining more and more attention due to their advantages of low cost, high gain and easy fabrication. Because reflectarray antennas usually use space feeding technology, there is no need to design complex power distribution networks, which makes them easier to implement large-aperture antennas. Reconfigurable reflectarray antennas can achieve dynamic beamforming by integrating tunable microwave components in each array element, thus becoming a viable alternative to complex phased array antennas. [0003] So far, several techniques have been proposed to design reconfigurable reflectarrays, such as tunable microwave impedance surfaces, ferroelectric ceramic-based reflectarrays, and microstrip patch antennas car...

AI Technical Summary

Problems solved by technology

On the other hand, the existing electronically controlled reflective array designs, whether digital or analog, have the problems of narrow bandwidth and low polarization flexibility

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