High frequency assembly

A high-frequency assembly, including:

• a cable, the cable including at least one dielectric waveguide fiber with a first end and an opposed second end;
• a high-frequency circuit;
• an interface unit, wherein the at least one dielectric waveguide fiber is at the first end operatively coupled with the high-frequency circuit via the interface unit;
• wherein the interface unit is designed to inject a high-frequency signal into the dielectric waveguide fiber and/or to receive a high-frequency signal from the at least one dielectric waveguide fiber at the first end;
• wherein the high-frequency signal has a first signal component of a first polarization direction and a second signal component of a second polarization direction, wherein the high-frequency assembly is designed to inject the first signal component and the second signal component in a defined manner and/or to split a received high-frequency signal into the first signal component and the second signal component;
• wherein the at least one dielectric waveguide fiber is a polymeric microwave fiber (PMF);
• and
• wherein the high-frequency assembly is designed to evaluate a first signal level of the first signal component and a second signal level of the second signal component.