|Abstract: ||Various technologies presented herein relate to constructing and/or
operating an antenna having an omnidirectional electrical field of
constant phase. The antenna comprises an upper plate made up of multiple
conductive rings, a lower ground-plane plate, a plurality of grounding
posts, a conical feed, and a radio frequency (RF) feed connector. The
upper plate has a multi-ring configuration comprising a large outer ring
and several smaller rings of equal size located within the outer ring.
The large outer ring and the four smaller rings have the same
cross-section. The grounding posts ground the upper plate to the lower
plate while maintaining a required spacing/parallelism therebetween.