Horizontally polarized omnidirectional characteristics in planes of ar
rays have been achieved with a 32 element circular array. The element
incorporated is a printed circuit tapered slot radiator in a stripline
configuration. This array was excited in cophase condition and was ev
aluated over the 6-18-GHz frequency band. It was observed that the omn
i variation in the horizontal plane is within +/- 3 dB over the freque
ncy band.