Electronically steerable antenna using reconfigurable power divider based on cylindrical electromagnetic band gap (CEBG) structure

摘要

A low complexity/cost beamsteering antenna includes a central line feed affixed to a radial waveguide structure, radiating elements positioned along the circumference of the radial waveguide structure, and a plurality of active elements interspersed along the surface of the radial waveguide structure between the central line feed and the radiating elements. The active elements may comprise PIN diodes or microelectromechanical system (MEMS) components, and may be selectively activated/deactivated by DC switches in order to direct the propagation of an RF signal over the radial waveguide structure in a manner similar to a power divider. As a result, the RF signal may be funneled to selected radiating elements, thereby effectively directionally aiming the main lobe of the emitted radiation pattern to beamsteer the wireless transmission.

主权项

1. An apparatus comprising:
a central line feed; a radial waveguide structure coupled to the central line feed, the radial waveguide structure comprising a plurality of radiating elements positioned around the central line feed, and a plurality of active elements interspersed between the central line feed and the plurality of radiating elements, the plurality of active elements excluding phase shifters, wherein the plurality of radiating elements are configured to convert a radio frequency (RF) signal into a wireless signal; and a controller coupled to the active elements, the controller configured to beam-steer the wireless signal by manipulating the active elements.