CAD oriented improved cavity model to investigate a 30°–60°–90° right angled triangular patch antenna on single, composite and suspended substrate for the application in portable wireless equipments

Abstract

This study presents an improved model for resonant frequency, input impedance, bandwidth and gain for a 30°–60°–90° right angled triangular patch antenna printed on a single, composite and suspended substrate. Merits of this model include low computation cost and mathematical simplicity. It is useful for direct application in computer aided design (CAD) programs. The model is based on the classical methods: (i) the cavity model determining the resonant frequency and input resistance at resonance, (ii) the dynamic and effective permittivity to take into account the influence of fringing field at the edge of the patch and (iii) the equivalent resonant parallel R–L–C circuit for determination of input impedance. The present model shows very close agreements with the experimental and software computational results compared with the other models available in open literature for wide range of variation of antenna and substrate geometric and electrical parameters.

Li's Formula Extended to Determine Accurate Resonant Frequency of a Rectangular Patch Antenna in Multi-Dielectric Layers

“…Nowadays microstrip patch antennas (MPA) are very popular, and they are widely used as an efficient sensor [1][2][3] both on fixed and portable devices [4,5] due of their several attractive features like light weight, low profile, small size, conformable structure, and easy fabrication. In outdoor application, the antenna performance degrades due to the formation of environmental hazards over the antenna.…”

Resonant Frequency of Circular Sectorial Microstrip Antenna Printed On Double-Layered Anisotropic Substrates

“…Since of this inherent limitation, the MPAs are the main obstacle that restricts extended applications for several domains. To deal with the disabilities mentioned, several techniques have been presented in the literature to boost the characteristics of microstrip antennas, such as adding a parasitic band around the radiant element [1], Making a slot in the ground plane [8], increasing the thickness of the substrate and using stacked configurations [1,9]. So, one method of designing high-performance antennas is to use antenna printed on anisotropic substrates [10][11][12].…”