Small size and low loss resonator type DMTL phase shifter

Two bit distributed coplanar waveguide phase shifter has been developed using bonding wire as an inductor. The idea is to remove all existent capacitances of an inductor, as it is in the planar inductor, and add controllable capacitor in parallel with pure inductor. The resonance condition of the bonding wire inductor and the added MAM capacitor creates wide range of working area to achieve large phase shifting per unit cell. The design utilizes MEMS switches in the DMTL phase shifter to change resonance condition. Using this method the number of cells is decreased considerably. As a result the size and loss are decreased. The design can be easily scaled to other frequencies for satellite and radar systems. (C) 2013 Elsevier Ltd. All rights reserved.