Multiple-Resonance-Based Wideband Phase Shifter with High-Performance and Extended Applications

To meet the requirements in the wide scanning range, wide bandwidth, and precise radiation pattern, wideband phase shifters (PSs) with large phase shift range, small phase deviation, and compact circuit size are demanded. Recently, multiple resonance design method is proposed and developed to achieve excellent performances of the wideband PSs. In this work, the proposed multiple-resonance-based PSs are reviewed and concluded, including the working principle, design methods and examples for series and parallel topologies, and extended applications in antennas and FSSs. All of results demonstrate that multiple resonance design concept of the wideband PSs can be well employed in the modern wireless communications.