Analysis of a New Method to Design a Coaxial-to-Rectangular Waveguide Transition

In this letter, a novel design of Ku-band end-launcher coaxial-to-rectangular waveguide transitions is presented. Return loss of -25dB with insertion loss of -0.5dB has been confirmed experimentally cover frequency range of 11~19GHz, bandwidth of 50% is attained. Nonstandard waveguide port with an internal dimension of 15mm·4.5mm is employed. Transversal miniaturization is achieved by contrast with Ku-band transitions terminated in standard waveguide WR62 with size of 15.8mm·7.9mm.