Abstract: A hollow waveguide assembly having a hollow waveguide body with a first aperture, extending from a first end of the body to a second to end of the body, forming a first hollow waveguide. An outer surface, at the first end of the body, has at least one damping means to suppress propagation of electromagnetic waves on the outer surface. An end face, at the second end of the body, has at least one damping means to suppress propagation of electromagnetic waves on the end face. The hollow waveguide body has a second aperture, extending from the first end of the body to the second end of the body, forming a second hollow waveguide. The at least one damping means suppresses, on the end face, and on the outer surface, propagation of electromagnetic waves from the first hollow waveguide to the second hollow waveguide.

Abstract: A preferred embodiment of a plug connector for connecting a waveguide to at least one electric conductor may have a housing for connecting to the waveguide. Fastening means may be provided to attach the housing to a structure having the at least one electric conductor. The housing may accommodate a signal converter having an antenna arrangement. A waveguiding arrangement may be provided within the housing. The waveguiding arrangement may guide an electromagnetic wave into the waveguide and may be paired with the antenna arrangement. The signal converter may be connected to at least one electric conductor and may perform conversion between electric signals and high-frequency electromagnetic signals.

Abstract: A preferred embodiment of a plug connector for connecting a waveguide to at least one electric conductor may have a housing for connecting to the waveguide. Fastening means may be provided to attach the housing to a structure having the at least one electric conductor. The housing may accommodate a signal converter having an antenna arrangement. A waveguiding arrangement may be provided within the housing. The waveguiding arrangement may guide an electromagnetic wave into the waveguide and may be paired with the antenna arrangement. The signal converter may be connected to at least one electric conductor and may perform conversion between electric signals and high-frequency electromagnetic signals.