ROTARY CONNECTION Russian patent published in 2007 - IPC H01P1/06 

FIELD: devices of antenna-feeder systems.

SUBSTANCE: circular band lines are located along two concentric tracks, formed by mated arcs of circles of similar radius, centers of which are shifted relatively to common rotation axis and made in form of intertwined partial rings with knees in spots of transition from one concentric track to another, while knees and radial inputs are grouped and located symmetrically and evenly. Knees may divide partial rings of band lines onto two parts, electric length of which only forms a quarter of wave length. Excitation system may be made in form of symmetric band lines on rotary and immoveable dielectric rings and connected to input and output coaxial lines.

EFFECT: decreased weight and dimensions.

6 dwg