Wideband Marchand balun and bow-tie antenna for sensor aplications

A novel wideband Marchand balun and bow-tie antenna have been proposed for sensor application. The proposed balun has been designed to differentially fed bow-tie antenna and match its differential impedance. The proposed approach has been investigated and verified by electromagnetic calculations and measurements of an exemplary Marchand balun and bow-tie antenna operating at center frequency f0 = 1 GHz. The obtained simulation and measurement results prove the usefulness of the proposed approach for utilization as sensor for healthcare application.