Wideband Antenna in Cavity Based on Metasurfaces

M. Martinis (1, 2) , L. Bernard (2) , K. Mahdjoubi (1) , R. Sauleau (3) , Sylvain Collardey (3)

1 IETR - Institut d'Electronique et de Télécommunications de Rennes
2 Institut franco-allemand de recherche de Saint-Louis
3 IETR - Institut d'Électronique et des Technologies du numéRique

A compact wideband printed antenna embedded in a half-wavelength cavity is introduced here. It consists of a strip-based metasurface printed in the cavity aperture. The principle of operation and key parameters are discussed. The numerical results are validated successfully around 2.3 GHz, and fractional -10-dB bandwidths reaching 31.8% and 34% are measured for cavity antenna prototypes without or with a surrounding ground plane, respectively. The corresponding measured radiation efficiencies and gain values at 2.3 GHz reach 92% and 87%, and 5.9 and 4.7 dBi, respectively

Keywords: Antenna measurements; Bandwidth; Broadband antennas; Cavity antenna; cavity antenna prototypes; cavity aperture; Cavity resonators; compact wideband printed antenna; half-wavelength cavity; metasurface; Microstrip; microstrip antennas; strip-based metasurface; Substrates; wideband

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

M. Martinis, L. Bernard, K. Mahdjoubi, R. Sauleau, Sylvain Collardey. Wideband Antenna in Cavity Based on Metasurfaces. IEEE Antennas and Wireless Propagation Letters, 2016, 15, pp.1053--1056. ⟨10.1109/LAWP.2015.2491609⟩. ⟨hal-01331280⟩