Akademik Veri Yönetim Sistemi
2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021, Singapore, Singapur, 4 - 10 Aralık 2021, ss.1107-1108
© 2021 IEEE.In this study, a novel approach is presented for efficient evaluation of Sommerfeld integrals arising in spatial-domain Green's functions in planar multilayered media. This approach allows us to tackle the difficulties encountered during the integration of the Sommerfeld integrals, which exhibit highly oscillatory and slowly decaying nature occurring especially at very high frequencies, e.g., at millimeter waves, that are finding increasing use in applications such as 5G and beyond. The oscillatory behavior of the integrand is modeled through an efficient interpolation and extrapolation scheme with a few samples needed to represent the integrand. Since the integrand is represented with a few exponentials, analytical integration can be used to speed up the process. The proposed approach is tested on different Green's functions and a good agreement is obtained.