Telefonaktiebolaget Lm Ericsson (publ)

Mahsa Ebrahimpouri Hamlkar

Lars Manholm

Oscar Quevedo-Teruel

Astrid Algaba Brazalez

The embodiments herein relate to a first waveguide comprising a first flange () surrounding an end opening () of the first waveguide (). The first flange () comprises at least two holes () which are periodically distributed around the end opening (). The first waveguide () is arranged to be connected to a second waveguide () by connecting the first flange () to a second flange () of the second waveguide () such that the end opening () of the first waveguide () faces an end opening () of the second waveguide () and such that the holes () in the first flange () are at least partly glide symmetrically positioned with respect to holes () which are periodically distributed around the end opening () of the second flange (b).

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Stockholm, Sweden

Mahsa Ebrahimpouri Hamlkar