The present invention relates to a guiding set for radio-electric waves comprising a pair of waveguides made up of a first waveguide and a second waveguide forming successive segments of a same transmission way for the radio-electric waves.
The set is characterized in that it further comprises a connecting piece comprising two plates arranged opposite one another while defining an inner space between them, and delimiting means delimiting, in the inner space, a radio-electric wave transmission channel, the transmission channel emerging on the one hand on the first waveguide and on the other hand on the second waveguide.