Apparatus and method of a dual polarized broadband agile cylindrical antenna array with reconfigurable radial waveguides

摘要

Embodiments are provided for an agile antenna that beamsteers radio frequency (RF) signals by selectively activating/de-activating tunable elements on radial-waveguides using direct current (DC) switches. The antenna comprises two parallel radial waveguide structures, each comprising a first radial plate, a second radial plate in parallel with the first radial plate, and conductive elements positioned vertically and distributed radially between the two plates. The radial waveguide structure further includes a plurality of quarter RF chokes which are connected to the conductive elements via respective micro-strips and tunable elements. The two parallel radial plates are separated by a height determined according to a desired transmission frequency range for RF signals, a length of the micro-strips, a diameter of the conductive elements, and a clearance space around each one of the conductive elements.

主权项

1. A radial waveguide structure in an antenna comprising:
a first radial plate; a second radial plate substantially in parallel with the first radial plate; a plurality of conductive elements positioned vertically and distributed radially between the first radial plate and the second radial plate, wherein the conductive elements are connected to micro-strips and tunable elements; a plurality of direct current (DC) switches coupled to the tunable elements; and a plurality of quarter radio frequency (RF) chokes, wherein the RF chokes are connected to the conductive elements via the micro-strips and the tunable elements, wherein the first radial plate and the second radial plate are separated by a height determined according to a desired transmission frequency range for RF signals, a length of the micro-strips, a diameter of the conductive elements, and a diameter of a clearance space around each one of the conductive elements.