Miniaturized quasi-Yagi antenna based on metaedge reflector

This paper presents a novel quasi-Yagi antenna (QYA) design in which the conventional PEC reflectors are replaced by metaedges, one-dimensional artificial perfect-magnetic-conductor-like edges. The unique reflection property of the metaedge helps miniaturize overall dimensions of the QYAs while maintaining high-gain performances. We demonstrate that the separation between the radiators and the reflectors in the metaedge based QYAs can be reduced to be much less than a quarter-wavelength. The radiative gain of 5.2 dBi is achived even without the addition of the directors.