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

fYear

2015

fDate

Feb. 27 2015-March 1 2015

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (NCC), 2015 Twenty First National Conference on

Conference_Location

Mumbai

Type

conf

DOI

10.1109/NCC.2015.7084840

Filename

7084840