Title :
Sensitivity analysis of a circularly polarized U-slot microstrip antenna
Author :
Gaffar, Md ; Choudhury, Sajid Muhaimin ; Zaman, Mohammad Asif ; Momtaz, Md Imran ; Alam, M. Shah ; Matin, Md Abdul
Author_Institution :
Dept. of Electr. & Electron. Eng., Bangladesh Univ. of Eng. & Technol., Dhaka, Bangladesh
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.
Keywords :
antenna theory; electromagnetic wave polarisation; finite element analysis; method of moments; microstrip antennas; variational techniques; FEM solver; MoM solver; centre frequency shift; circularly polarized U-slot microstrip antenna; effective length theory; maximum radiated power; modified Haneishi model; perturbation method; rectangular microstrip antenna; sensitivity analysis; single layer coaxially fed microstrip antenna; variational method; Full wave analysis; U-slot antenna; perturbation theory; rectangular microstrip antenna; variational technique;
Conference_Titel :
Electrical and Computer Engineering (ICECE), 2010 International Conference on
Conference_Location :
Dhaka
Print_ISBN :
978-1-4244-6277-3
DOI :
10.1109/ICELCE.2010.5700750
