Title :
Efficient Wide-Band Analysis of Antennas Around a Conducting Platform Using MoM-PO Hybrid Method and Asymptotic Waveform Evaluation Technique
Author :
Ji Ma ; Shu-Xi Gong ; Xing Wang ; Ying Liu ; Yun-Xue Xu
Author_Institution :
Nat. Lab. of Sci. & Technol. on Antennas & Microwaves, Xidian Univ., Xi´an, China
Abstract :
An efficient wide-band analysis that combines method of moments-physical optics (MoM-PO) hybrid formulation with the asymptotic waveform evaluation (AWE) technique is presented for antennas around an electrically large platform. To facilitate the analysis of large problems, compared with MoM, the MoM-PO hybrid formulation is employed to reduce the number of unknowns and memory requirements. Further, the automatic differentiation (AD) approach is used to calculate the high order frequency derivatives of Green´s functions required in the algorithm. Numerical results show the efficiency and capability of the method proposed in this paper.
Keywords :
Green´s function methods; antenna theory; broadband antennas; method of moments; physical optics; AD approach; AWE technique; Green´s functions; MoM-PO hybrid method; asymptotic waveform evaluation technique; automatic differentiation approach; conducting platform; electrically large platform; high order frequency derivatives; method of moments-physical optics hybrid method; wideband antenna analysis; Antennas; Equations; Impedance; Iterative methods; Memory management; Moment methods; Taylor series; Asymptotic waveform evaluation (AWE) technique; automatic differentiation (AD); hybrid analysis; method of moments (MoM); physical optics (PO);
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2012.2210272
