Designing Wideband Microstrip Reflectarrays for 10 GHz

Abstract

This paper presents two microstrip reflectarray designs based on variable size unit cells for 10 GHz. One design uses a 3-layer unit cell with polygon shaped patch and the other uses a unit cell with 1-layer square loop patch. Both arrays have a size of 10λ × 10λ at 10 GHz, can reflect the incoming wave as a high gain pencil beam in the desired direction of θ = 30°. Gains at 10 GHz are 23.6 dB and 26.1 dB for the 3-layer and one-layer structures, respectively. The multi-layer structure resulted in a wider gain banwdith. Simulation results show that the 3-dB gain bandwdith is about 22% for the 3-layer structure reflectarray, as compared to 12% for the one-layer structure.

Microstrip Reflectarray Design for 26 GHz

“…Specifically, a 160-element RIS operating at 5.8 GHz bandwidth was designed, fabricated, and accurately measured in the anechoic chamber. The results show that the developed RIS system can achieve an SNR gain of about 20 dB when both the transmitter and receiver use directional antennas located at a distance of 5-10 m from the RIS Two microstrip reflectarray designs based on variable size unit cells for 10 GHz was presented in [9]. One design uses a 3-layer unit cell with a polygonal patch and the other design uses a unit cell with a single-layer square loop patch.…”