Sensitivity analysis of a circularly polarized U-slot microstrip antenna

Abstract

In this paper, sensitivity models for centre frequency and maximum radiated power of a rectangular microstrip antenna at φ = 0 plane using Effective Length Theory have been developed. A wide operating bandwidth for a single-layer coaxially fed microstrip antenna is obtained by cutting a U shaped slot on the metal patch. The sensitivity of perturbation of different truncated slot and feed position for a microstrip antenna is a novel concept. An approximate sensitivity model is derived here using perturbation and variational method and confirmed by modified Haneishi model and hybrid FEM/MoM solver. The proposed sensitivity models provide better approximations for calculating shift of centre frequency and maximum radiated power of the microstrip antenna.

Design of Phytic Acid Crosslinked Xerogels as Organic Photocatalysts for Visible Light‐Assisted Degradation of Dyes

“…[17,18] Photocatalysis is one of the most popular methods that is used for the degradation of water contaminants via the formation of reactive oxygen species (ROS) on the surface of heterogeneous photocatalysts. [19][20][21] It also provides the benefit of minimal sludge production. [11,12] The ability to use sunlight to create hydroxyl radicals is another benefit of degradation via heterogeneous photocatalysts.…”