Title :
A broadband cavity-backed slot antenna design with small cavity height and analysis on large ground plane
Author :
Mishra, P.K. ; Jahagirdar, D.R. ; Kumar, Girish
Author_Institution :
Res. Center Imarat, Defence R&D Organ., Hyderabad, India
fDate :
Feb. 28 2014-March 2 2014
Abstract :
In this paper, design of broadband microstrip line fed cavity backed slot antenna with very small cavity height of 0.08 lambda is proposed. The antenna is designed for 1.8 GHz frequency band with wider beam coverage in E-plane. Parametric analysis of antenna is carried out to optimize antenna design for smaller cavity height, broad bandwidth and wider beam coverage. The radiation characteristic of antenna for different sizes of ground plane is analyzed in detail. Measured results of antenna with different ground plane sizes are presented. The Antenna has VSWR <;2 bandwidth of 18% and maximum gain of 7.2 dBi with wide beam coverage in E-plane.
Keywords :
antenna feeds; antenna radiation patterns; broadband antennas; microstrip antennas; microstrip lines; slot antennas; E-plane; antenna design; antenna radiation characteristic; broadband cavity-backed slot antenna; broadband microstrip line fed cavity; frequency 1.8 GHz; ground plane; parametric analysis; small cavity height; smaller cavity height; Antenna measurements; Antenna radiation patterns; Broadband antennas; Cavity resonators; Microstrip antennas; Slot antennas;
Conference_Titel :
Communications (NCC), 2014 Twentieth National Conference on
Conference_Location :
Kanpur
DOI :
10.1109/NCC.2014.6811243
