Article ID: 11.20140767
In this paper, the design of a wideband bow-tie antenna using suspended stripline (SSL) balun is presented. The utilized balun is composed of a wideband multi-section power divider and a left-handed nonlinear transmission line (LH NLTL) implemented with SSL. The fabricated balun exhibits wide frequency bandwidth form 4 to 18 GHz (127 %). To demonstrate applicability of the proposed balun, a modified bow-tie antenna is built and tested. The fabricated antenna provides wide frequency bandwidth from 5 to 18 GHz (110 %) and the measured gain of typical 3.5 dBi with quasi-omni directional radiation patterns.
