TE10 mode multiple reflecting head - measures multiple reflections in a long circular wave guide

摘要

The multiple reflecting head is used to measure the attenuation of the circular TE10 mode in a large diameter circular guide used for long distance communication, comprising an input rectangular guide fed by a electro magnetic wave generator, a transition transforming the TE10 rectangular fundamental mode into TE20 rectangular mode, a separator separating the guide of the TE20 rectangular mode into two rectangular guides each transmitting one half of TE20 rectangular mode, a piston pierced with three holes the first two of which couple the two rectangular guides to a circular guide and the third is used to couple the same circular guide to a rectangular output guide. The circular guide has a reduced diameter, a transversal strip (17) is arranged diametrically in the circular guide and a optimised transition (5) connects the reduced diameter guide to the large diameter circular guide.