CRLH CPW Antenna Using Cuboid Structure for VHF Application

Abstract

In this study, we propose a composite right/left-handed (CRLH) cuboid antenna operating in the very-high-frequency band. The proposed antenna uses a CRLH transmission-line structure for antenna miniaturization, and the left-handed component is implemented using interdigital capacitors and meander lines. A three-dimensional CRLH antenna was designed to increase the parallel inductance by applying a meander line to the side of the cuboid structure. The proposed antenna operates at 252.5 MHz and has dimensions of 0.12 λ ×0.06 λ×0.02 λ. The antenna has a voltage standing wave ratio of 3.5:1, bandwidth of 2.26 %, and maximum gain of −11.5 dBi.