Parameter study of a broadband uniplanar quasi-Yagi antenna

A parameter study is performed of a broadband uniplanar quasi-Yagi antenna with regard to its design and use in a spatial power combiner. The uniplanar quasi-Yagi antenna consists of a director and a driver fed by a broadband microstrip to coplanar strip transition. The truncated ground plane on the backside of the substrate is used as a reflector. A 3D full-wave electromagnetic field analysis, using a commercially available 3D full-wave EM package, is applied to identify those parameters which most affect the design frequency and operational bandwidth of this antenna. Optimal design conditions are identified.