Microstrip to rotated half-mode substrate integrate waveguide planar transition

A novel broadband planar microwave transition is presented for use in the Ku Band. The transition is from a microstrip transmission line to a rotated half-mode substrate integrated waveguide, using a high dielectric constant PTFE laminate. A key feature of the transition is that the electric field is rotated from vertical orientation at the microstrip input port to horizontal on the top dielectric surface at the output port.