The book studies different types of DRA antennas on curvature structures. The effect of ground plane curvature on the radiation characteristics of the DRA element is presented. These elements on curvature structures are used for many applications such as: DRA elements are used to get omnidirectional, direction finding systems, more compact handheld RFID reader and DRA reflectarray. Full-wave analysis using the finite integration technique (FIT) is applied. The results are validated by comparing it with that determined by finite the element method (FEM) and the transmission line method (TLM).

The numerical solution of complex electromagnetic problems via heterogeneous solution methods is proposed. This book presents a hybrid technique, which combines the desirable features of the method of moments (MoM) and wavelet transform. This technique is used to analyze large-scale problems. The discrete wavelet, and wavelet packet transforms (DWT, WPT) are used to sparsify the method of moments (MoM) matrix for large scale problems. which results in a great improvement in the computer storage size and also a reduction in the computational time.An algorithm based on the adaptive basis...