Conformal microstrip patch circular array with orthogonal conformal stripline feed and all-angle transition

A prototype Ku-band, 32-element, circular microstrip patch array connected to a conformal stripline feed with an orthogonal all-angle transition was designed, fabricated and tested. The low cost antenna uses standard printed circuit technology. The antenna consists of a stripline feed conformally encased in a metal ring orthogonal to microstrip patch radiating elements which are etched on the front Duriod 5880 ring. The calculated pattern and predicted gain agreed quite well with the measured array prototype patterns and gain. The circular array configuration is of practical interest and spans many system uses.