A Robust Method for the Computation of New Closed-Form Green's Functions for Microstrip Structures

作者：Firouzeh Zaker Hossein^*; Moini Rouzbeh; Sadeghi Seyed Hossein Hesamedin; Faraji Dana Reza

来源：International Journal of RF and Microwave Computer-Aided Engineering, 2011, 21(2): 206-215.

DOI：10.1002/mmce.20506

• microstrip
• closed-form Green's functions
• complex images

A robust approach for the computation of new closed-form Green's functions is considered to calculate the symmetrical microstrip Green's functions. In this method, the surface-wave poles are first extracted using a recursive contour integration method. Then, the remainder is approximated by a series of complex exponentials using the Prony's method or the generalized pencil-of-function method (GPOF) along the extended rooftop shaped path in k(rho)-plane. Subsequently, an analytical identity is employed to obtain the new spatial-domain Green's functions. It is observed that this method can evaluate the spatial-domain Green's functions accurately and efficiently for both near and far fields. In addition, there is no erroneous results in the near-field region when z not equal z ' and rho -> 0.

• 出版日期2011-3