Ultra-wideband phase shifter using broadside-coupled microstrip coplanar waveguide

A compact planar phase shifter with ultra-wideband (UWB) performance and 180° differential phase shift is proposed. It utilizes a broadside-coupled microstrip/coplanar waveguide (CPW). Thus, the proposed device can be fabricated using a simple double-side printed circuit board. Four open-ended stubs are added to the microstrip patches and CPW in order to… CONTINUE READING