TY - GEN
T1 - High gain microstrip antennas loaded with high characteristic impedance superstrates
AU - Attia, Hussein
AU - Yousefi, Leila
AU - Ramahi, Omar
PY - 2011
Y1 - 2011
N2 - It is shown that, under some resonance conditions, a microstrip patch antenna can be designed to achieve the highest possible gain when covered with a superstrate at the proper distance in free space. The transmission line analogy and the cavity model are used to deduce the resonance conditions required to achieve the highest gain. The resonance conditions include the condition on spacing between the antenna's substrate and the superstrate and the thickness of the superstrate. The permeability and permittivity of the superstrate is determined based on these resonant lengths and the appropriate characteristic impedance of each layer in this multilayered structure. The results are verified using both analytical and numerical methods. The effect of anisotropy of the superstrate is numerically investigated. The design criteria proposed here will reduce the total profile of the radiating system by 50% when compared with previous trends.
AB - It is shown that, under some resonance conditions, a microstrip patch antenna can be designed to achieve the highest possible gain when covered with a superstrate at the proper distance in free space. The transmission line analogy and the cavity model are used to deduce the resonance conditions required to achieve the highest gain. The resonance conditions include the condition on spacing between the antenna's substrate and the superstrate and the thickness of the superstrate. The permeability and permittivity of the superstrate is determined based on these resonant lengths and the appropriate characteristic impedance of each layer in this multilayered structure. The results are verified using both analytical and numerical methods. The effect of anisotropy of the superstrate is numerically investigated. The design criteria proposed here will reduce the total profile of the radiating system by 50% when compared with previous trends.
UR - https://www.scopus.com/pages/publications/80055011178
U2 - 10.1109/APS.2011.5996516
DO - 10.1109/APS.2011.5996516
M3 - Conference contribution
AN - SCOPUS:80055011178
SN - 9781424495634
T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
SP - 1258
EP - 1261
BT - 2011 IEEE International Symposium on Antennas and Propagation - Proceedings
ER -