Title :
Gain enhancement of microstrip patch antenna using near-zero index metamaterial (NZIM) lens
Author :
Suthar, Hemant ; Sarkar, Debdeep ; Saurav, Kushmanda ; Srivastava, Kumar Vaibhav
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., Kanpur, Kanpur, India
fDate :
Feb. 27 2015-March 1 2015
Abstract :
In this paper, an array of 7 × 7 novel compact metamaterial unit cells is used as superstrate to improve the broadside gain of a microstrip patch antenna operating at the WLAN band. The proposed unit cell is obtained by suitably adding extra metal strips to the conventional mirrored S like structures. The unit cell cell analysis and parameter extraction using periodic boundary condition confirms the near zero index behavior as well as significant reduction (almost 52%) in the unit cell footprint. Simulation and measurement results confirm that near-zero index metamaterial (NZIM) lens significantly improves the gain (by more than 2 dBi) and reduces the half power beamwidth in both E-plane and H-plane by 20°.
Keywords :
lens antennas; metamaterial antennas; microstrip antennas; wireless LAN; NZIM Lens; WLAN band; broadside gain; compact metamaterial unit cells; gain enhancement; microstrip patch antenna; near-zero index metamaterial lens; parameter extraction; periodic boundary condition; unit cell footprint; Antenna measurements; Directive antennas; Gain; Lenses; Metamaterials; Patch antennas;
Conference_Titel :
Communications (NCC), 2015 Twenty First National Conference on
Conference_Location :
Mumbai
DOI :
10.1109/NCC.2015.7084840
