학술논문
Harmonic Beam Steering Along Both the Cardinal Planes Using a Dual-polarized Space-Time-Coding Digital Metasurface
Document Type
Conference
Source
2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI) Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI), 2022 IEEE International Symposium on. :918-919 Jul, 2022
Subject
Language
ISSN
1947-1491
Abstract
In this paper, a space-time-coding digital metasur-face is proposed for harmonic beam steering along both the cardinal planes. With respect to the harmonic frequencies, the metasurface steers a TE- (or y-) and TM- (or x-) polarized incident wave along xz- (ϕ = 0°) and yz- (ϕ = 90°) plane, respectively, upon reflection. To maintain the main lobe magnitude at the same level and the first side-lobe levels (SLL) 10 dB below the main lobe maximum for all the harmonic orders, an artificial neural network (ANN) routine is used to find out the required space-time-coding patterns for both the polarizations. A 1-bit coding digital metasurface is shown which can support the proposed idea.