Broadband Conductor Backed-CPW to Substrate Integrated Slab Waveguide Transition for Ku-Band

Abstract

The paper considers the transition from conductor backed coplanar waveguide (CB-CPW) to substrate integrated slab waveguide (SISW). The SISW concept is described, it improves the single-mode impedance bandwidth, reduces insertion loss, and the overall loss of the transition. Design example is presented for 12-18 GHz frequency range. The parameters of the transition laboratory prototype are measured to validate the claims.