CRLH based leaky-wave antenna using modified Minkowski fractal on SIW with tunable frequency band

Abstract

In this paper, a composite right/left-handed (CRLH) based frequency tunable compact high gain leaky-wave antenna (LWA) is proposed at Ku-band. For miniaturization purpose, the modified Minkowski fractal geometry is utilized and by incorporating with suitably placed varactor diodes, the frequency tunable leaky-wave antenna is designed in planar environment. By changing the position of varactor diodes the operating frequency range of the antenna is shifted from 15–16.2 GHz to 14–15 GHz with the beam scanning range of 32° and 30° respectively. The obtained peak gain is 16.7 dBi. Full-wave simulations are performed in HFSS.