Mediterranean Microwave Symposium, Tangier, Morocco, 15 - 17 November 2009, pp.5-6, (Full Text)
A rigorous Wiener-Hopf solution is derived for the analysis of coaxial waveguides with dielectric filled semi-infinite grooves in the inner and outer conductors. Such discontinuities can serve useful impedance matching functions in microwave circuits and may exhibit band stop filter characteristics.