Spectral-domain analysis of a resistive patch antenna with uniaxial substrate

Abstract

The moment method technique has been developed to examine the scattering properties of a rectangular microstrip patch antenna with a surface resistance. Entire domain sinusoid basis functions without edge condition and roof top sub-domain basis functions are introduced to expand the unknown current on the metal patches. The boundary condition for the electric field was used to derive an integral equation for the electric current. The necessary terms for representing the surface resistance on the patch were derived and were included in the equation in the form of a resistance matrix. Effects of uniaxial anisotropy in the substrate on the complex resonant frequency, the half band width, the radar cross section and the radiation of the microstrip patch antenna are also investigated. Comparative study between our results and those available in the literature is done and showed a very good agreement.

Hankel transform domain analysis of covered circular microstrip patch printed on an anisotropic dielectric layer

“…Furthermore, superstrate layers are often used to protect the microstrip antenna from its environment hazards, especially when placed on aircrafts and missiles [4,8,9]. During recent years, great interests have been shown in using microstrip antenna deposited on anisotropic substrate since the substrate anisotropy could have important applications on the operation of microstrip antennas [10][11][12]. With the increasing complexity of geometry and material property, designing these antennas requires more and more dedicated and sophisticated computer aided-design (CAD) tools to predict the characteristics.…”

“…The method of moments (MoM) has been proven to be one of the most powerful CAD tools for solving this class of problems. By now, a number of microstrip antennas with anisotropic substrate have been investigated using the MoM based spectral domain analysis method [10][11][12]. Many works have studied the effect of uniaxial anisotropy on the resonant characteristics of a single-layer circular microstrip antenna in [13][14][15][16][17], where the positive and negative uniaxial anisotropies were considered.…”

Resonant characteristics of rectangular Microstrip antenna printed on electric–magnetic uniaxial anisotropic substrates

“…During recent years, great interests have been shown in using a microstrip antenna deposited on the anisotropic substrate since the substrate anisotropy could have important applications for the operation of microstrip antennas [3][4][5][6]. With the increasing complexity of geometry and material property, designing these antennas requires more and more dedicated and sophisticated computer aided-design (CAD) tools to predict the characteristics.…”

Efficient full‐wave analysis of inverted circular microstrip antenna

“…Several methods using different levels of approximation are available in the literature to determine the resonant characteristics of circular microstrip antenna, however, the accuracy of these approximate models is limited and only suitable for analyzing simple, regularly shaped antenna, or thin substrates . An alternative is to use a more sophisticated technique, such as the full‐wave method of moments (MOM), which is versatile and accurate, although highly computer intensive .…”