Bandwidth Improvement Methods for Monopole Element Printed Quasi-Yagi Antenna

A modified monopole element printed quasi-Yagi antenna (PQYA) for bandwidth (BW) improvement is investigated in this paper. With the rectangular driven monopole element, offset feed, and optimizing other design parameters, an operating frequency range from 1.31 to 2.76 GHz is achieved. The evolution steps of the modified monopole element PQYA are presented, and it is shown that an impedance BW can be improved from 41.68% to 71.88%. To verify the simulations, the prototype of the antenna is fabricated and tested. The experimental results are in good agreement with simulated results.