Abstract: A stripline to waveguide transition is provided that includes a shielded stripline having a transmission line in a dielectric, between two ground planes. The transition includes a stripline patch electrically coupled to the transmission line within an opening of the first ground plane and a stripline impedance matching transformer. The transition further includes a waveguide comprising a waveguide wall defining a waveguide opening. The waveguide is arranged substantially perpendicular to the patch, and the waveguide opening is aligned with an opening in the first ground plane. The electric field of the stripline transitions to a transverse electric propagation in the waveguide. The transition may be integrated with a transceiver and antenna.