Generalised transmission line model for microstrip patches

Abstract

A transmission line model for microstrip configurations, for which separation of variables is possible, is presented. For this, the patch is modelled as a transmission line joining the radiating apertures. Each section of the transmission line is replaced by a 7t-network. The effect of apertures in the direction perpendicular to the direction of propagation is included through the complex eigenvalues. The effect of mutual coupling between the radiating edges can be described using variational technique and finally incorporated in the equivalent circuit of the structure. Application of the transmission line method appears to be large. Some patch shapes have been analysed and others indicated.

Circularly Polarized Microstrip Antennas with Proximity Coupled Feed for Circularly Polarized Synthetic Aperture Radar

“…The TLM method in its original form incorporates as line parameters the characteristic impedance and the effective propagation constant and is applicable only for planar rectangular or square microstrip antennas (Wong, 1999). To this end, the generalized transmission line model (GTLM) theory was proposed (Bhattacharyya & Garg, 1985), where the line parameters are the electromagnetic fields under the patch. Under this consideration, as long as the separation of variables is feasible for the wave equation expressed in a particular coordinate system, GTLM theory is applicable to microstrip antennas of any patch shape.…”

Mathematical Modeling of Spherical Microstrip Antennas and Applications

“…The TLM method in its original form incorporates as line parameters the characteristic impedance and the effective propagation constant and is applicable only for planar rectangular or square microstrip antennas (Wong, 1999). To this end, the generalized transmission line model (GTLM) theory was proposed (Bhattacharyya & Garg, 1985), where the line parameters are the electromagnetic fields under the patch. Under this consideration, as long as the separation of variables is feasible for the wave equation expressed in a particular coordinate system, GTLM theory is applicable to microstrip antennas of any patch shape.…”

An Application of ANN Model with Bayesian Regularization Learning Algorithm for Computing the Operating Frequency of C-Shaped Patch Antennas

“…C-shaped patch antennas (CPAs) formed by slot-loading technique are widely used owing to having better characteristics such as wideband and miniaturized structure [3][4][5]. In analysis of the traditional PAs techniques such as cavity model [6] and transmission line model [7] are used. However, irregular shaped PAs may not be analyzed with use of these techniques.…”