Abstract
Conference Title: 2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting Conference Start Date: 2018, July 8 Conference End Date: 2018, July 13 Conference Location: Boston, MA, USA Novel low-cost phase shifter that hybridize stepwise and continuously variable phase shifting mechanisms are presented in this work. A combination of straight and curved waveguides is used to realize the step-wise phase shifts, while the variable phase shifts are achieved by inserting one or more layers of metallic vias in the waveguide to achieve a differential phase up to 90°. An alternative scheme, which achieves the phase shift in the entire 0° to 360° range by mechanically changing the length of a telescopic guide, is also described.