Dual-band 20/30 GHz circularly polarized transmitarray for SOTM applications

H. Hasani (1) , J.S. Silva (1) , J.R. Mosig (1) , M. García-Vigueras (2, 1)

1 EPFL - Ecole Polytechnique Fédérale de Lausanne
2 IETR - Institut d'Électronique et des Technologies du numéRique

This paper presents a five-layer circularly-polarized transmitarray antenna operating at downlink (19.7-20.2 GHz) and uplink (29.5-30 GHz) Ka-bands and illuminated by a metallic circular cavity perforated on its top aperture with a crossed-slot. The proposed dual-band transmitarray design is based on a unit-cell composed of split-ring elements, providing phase-shift in transmission by their physical rotation. The initial antenna system already shows promising results in terms of directivity and axial ratio that can readily be improved using optimization methods. © 2016 European Association of Antennas and Propagation.

Keywords: Antennas; IMPATT diodes; Microwave antennas; Phase shift; Phase shifters; Satellite communication systems; Slot antennas; Antenna system; Circular cavity; Circularly polarized; Dual Band; Ka band; Optimization method; Satellite communications; Transmit arrays; Circular polarization

Domains: Computer Science [cs]; Networking and Internet Architecture [cs.NI]; Engineering Sciences [physics]; Electronics

H. Hasani, J.S. Silva, J.R. Mosig, M. García-Vigueras. Dual-band 20/30 GHz circularly polarized transmitarray for SOTM applications. 10th European Conference on Antennas and Propagation, EuCAP 2016, Apr 2016, Davos, Switzerland. pp.7481869, ⟨10.1109/EuCAP.2016.7481869⟩. ⟨hal-01368161⟩