Fast Analysis of Microstrip Antennas Over a Frequency Band Using an Accurate Mom Matrix Interpolation Technique

Abstract

Abstract-A novel method based on the hybrid volume-surface integral equation (VSIE) and the impedance matrix interpolation technique is presented for the fast analysis of microstrip antennas in frequency sweeps. A novel impedance matrix interpolation scheme is extended to the impedance matrix associated with VSIE, thus providing high accuracy, high efficiency, and large interpolation bandwidth for metal-dielectric composite problems. To demonstrate the effectiveness and accuracy of the proposed technique, numerical results for typical rectangular patch antennas and a broadband U-slot rectangular patch antenna are presented. Good agreement among the interpolation results, the exact method of moments (MoM) solutions, the finite element method (FEM) solutions, and measured data is observed over the bandwidth. The interpolation bandwidth is further investigated through a scattering problem. Numerical results show that high accuracy is obtainable within 10 : 1 bandwidth.

Numerical evaluation of a full‐wave antenna model for near‐field applications

“…; Chen et al . ). Method of moments (MoM) is then employed to approximate the integral equation problem by a linear system of basic functions and their associated expansion coefficients.…”

Intrinsic modeling of radar antennas: From far-field to near-field conditions

“…For near-field conditions, as typically adopted configuration in ground-penetrating radar (GPR) applications, antennas have been modeled using numerical approaches, such as the finite-difference time-domain (FDTD) method [1]- [3], finite element method (FEM) [4], [5], or the method of moments (MoM) [6], [7]. Yet, numerical approaches need significant computing resources, which strongly limits signal inversion, and suffer from inherent differences between the real and conceptualized antenna models.…”

Multiport Analysis by Pad㉠Approximation

“…Some common analytical methods are the transmission line model [1][2][3][4], cavity model [5,6], and multiport network model (MNM) [7,8]. Numerical methods are the method of moments (MoM) [9][10][11][12], finite element method (FEM) [11,12], and finite difference time domain method (FDTD) [13,14]. The multiport network model can be considered an extension of the cavity model where the substrate is treated as a cavity surrounded by a perfect electric conductor (PEC) on the top and bottom planes, and a perfect magnetic conductor on side surfaces.…”