W. Liu, X. Qing and Z. N. Chen, "Metamaterial-based wideband shorting-wall loaded mushroom array antenna," 2015 9th European Conference on Antennas and Propagation (EuCAP), Lisbon, 2015, pp. 1-4.
Abstract:
A shorting-wall loaded metamaterial mushroom array antenna is proposed for bandwidth enhancement and compact design. Owing to the shorting-wall loading, the lower frequency region of the right-handed branch of the composite right/left-handed (CRLH) mushroom structure is exploited. The operating modes of the antenna are investigated. The antenna prototype at 5-GHz band exhibits 26% impedance bandwidth (|S11|