Waveguide transition section assembly - joins coaxial line to rectangular guide and has filter comprising specified circuit and resonant circuit

摘要

The waveguide transition section is for joining a coaxial line to a rectangular waveguide. It has a filter circuit between the waveguide (H) and the coaxial line (K). The filter circuit consists of the series combination of a quarter wave line (L1) and an inductor (L), and a parallel resonant circuit (P) consisting of a terminal absorber (Ab) (bandstop filter) and a bandpass filter formed by a stepped section of waveguide inside the transition. The coaxial line inner conductor (2) extends into this section. The coaxial line is coupled in on the broad face of the guide.