Title :
A high gain and wideband directional antenna using Z-shaped near zero-index metamaterial (NZIM) resonators
Author :
Hemant Suthar;Debdeep Sarkar;Kushmanda Saurav;Kumar Vaibhav Srivastava
Author_Institution :
Department of Electrical Engineering, Indian Institute of Technology, Kanpur, Kanpur, U.P. - 208016, India
Abstract :
In this paper, a wideband directional antenna comprising of bow-tie elements is loaded with Z-type near zero index metamaterial (NZIM) unit cells to achieve high-gain and reduced beamwidth. Both the simulation and measurement results show that the proposed antenna has gain of 6.9 dBi-9.3 dBi in the operating band (4.9 GHz-7.6 GHz), with average gain enhancement of 1.5 dB compared to the reference antenna. Also the half-power beamwidth is reduced by 32o after loading with Z-shaped ZIM. The proposed antenna can be used in point-to-point communication applications in C-band.
Keywords :
"Antenna measurements","Antenna radiation patterns","Dipole antennas","Resonant frequency","Gain","Metamaterials","Loaded antennas"
Conference_Titel :
Electrical Computer and Electronics (UPCON), 2015 IEEE UP Section Conference on
DOI :
10.1109/UPCON.2015.7456691
