Single-Layer Multi-band Circularly Polarized Reflectarray Antenna: Concept, Design, and Measurement

This paper presents a single layer multi-band reflectarray antenna with circular polarization. The antenna geometry and operation principles are described. The reflectarray design procedure, including antenna elements and offset feed, is illustrated in details. An X band reflectarray prototype is fabricated and measured in the near field system, which realizes a 30.4 dB gain, 53.7 % efficiency, and a 6 % bandwidth 1