Electromagnetic Modeling of Reflectarray Antennas

Future antenna architectures especially for space applications are becoming more and more complex due to the need of Electronic Reconfigurability. This reconfigurability is needed in terms of Radiation Pattern, Bandwidth, Reliability, and Power Consumption. In this context, Electronically Tunable Reflectarrays and Frequency Selective Surfaces (FSSs) are particularly the hottest domains of RF design. The accurate analysis of electromagnetic(EM) scattering from such reconfigurable antenna structures is of great practical interest these days. However due to their large electrical size and complex cellular patterns specially when tuning elements such as RF-MEMS switches are also integrated within the array elements, conventional full-wave EM Modeling of such multiscale structures either fail or require enormous amount of computational resources to resolve prohibitively large number of unknowns. A novel and efficient modular numerical technique called Scale Changing Technique (SCT) addresses all these problems. The focus of this book is on EM modeling of passive and active (electronically steerable by RF-MEMS Switches )microstrip reflectarray using this Technique.

Autorentext

Dr.Tahir was born in Faisalabad,Pakistan in 1983.He received his Masters degree from University of Nice, Sophia Antipolis, France in 2008 and Doctorate degree from University of Toulouse(INPT),France in 2011.Currently He is serving as Assistant Professor at SEECS,National University of Sciences and Technology(NUST),H-12 Islamabad,Pakistan.