Waveguide directional coupler family with a common housing having different sets of conductive block insertable therein

摘要

A family of waveguide branch directional couplers having various coupling values is adapted for using the same housing dimensions for all members of the family. The housing includes a conductive block defining first and second spaced-apart parallel rectangular through waveguides. The block also defines a chamber extending between the through waveguides. One or more further conductive blocks in the form of rectangular parallelepipeds are fastened within the chamber and dimensioned to coact with the chamber dimensions to define at least two rectangular branch waveguides extending between the through waveguides. The dimensions of the further blocks are selected to adjust the branch waveguide dimensions to provide the various coupling values.