Screened coplanar strip line arrangement

摘要

The screened coplanar strip line arrangement makes it possible to supply two loads with radio-frequency power in the same phase. The strip lines K1 and K2 respectively are coupled to the loads V1 and V2, are in each case short-circuited at a distance A APPROX N lambda/4 from the loads, and are coupled to the strip lines K3 or K4 respectively at a distance a from the respective short circuit. The earthing strips of the strip lines K3 and K4 and the centre conductor of the strip lines K1 and K2 project into a waveguide and thus produce an E-field probe, the behaviour of the earthing strips in the waveguide approximating to the equipotential lines of the electromagnetic wave being passed in the waveguide. The screening housing of the arrangement between the loads V1 and V2 and the E-field probe is designed such that the path length L from one earthing edge MK of the coplanar arrangement to the other is approximately L = lambda/4.