A waveguide device comprises a first circular waveguide segment (CWS) that imparts a 3/8 relative phase shift to two orthogonal linearly polarized signals, and a second CWS that imparts a /8 relative phase shift to two orthogonal linearly polarized signals. A waveguide assembly (WGA) comprises the first CWS disposed coaxially adjacent to the second CWS. A source may provide dual linear polarized energy into the WGA. In a first mode, the first CWS is axially orientated relative to the second CWS, such that the first CWS polarization is offset by 90 degrees with respect to the second CWS polarization. The radiation source polarization may be offset by 45 relative to the first CWS polarization and the second CWS polarization. In a second mode, the first CWS may be orientated with respect to the second CWS, such that the first CWS polarization and the second CWS polarization are substantially the same.

A cable is provided which has a dielectric medium forming a chamber which can also be filled by the dielectric medium. The cable additionally has a first dielectric waveguide element and a second dielectric waveguide element. The first dielectric waveguide element is arranged at a distance from the second dielectric waveguide element. The first dielectric waveguide element runs along a longitudinal direction of the cable through the chamber formed by the dielectric medium, and the second dielectric waveguide element runs along the longitudinal direction of the cable through the chamber formed by the dielectric medium. The polarization direction of the first dielectric waveguide element differs from the preferred polarization direction of the second dielectric waveguide element.

A vehicle having a communication system is disclosed. The system includes two electrical couplings, coupled by way of a rotary joint having a bearing waveguide. Each electrical coupling includes an interface waveguide configured to couple to external signals. Each electrical coupling also includes a waveguide section configured to propagate electromagnetic signals between the interface waveguide and the bearing waveguide of the rotary joint. Additionally, the rotary joint is configured to allow one electrical coupling to rotate with respect to the other electrical coupling. An axis of rotation of the rotary joint is defined by a center of a portion of the waveguides. Yet further, the rotary joint allows electromagnetic energy to propagate between the waveguides of the electrical couplings.