2016-08-242016-08-242013-01-08http://hdl.handle.net/10919/72688A dual-band, dual-orthogonally-polarized antenna element includes a dielectric substrate having a conductor layer that includes a square ring slot and a shorted square ring, with each having a pair of orthogonal feed points. The shorted square ring is fed with coaxial probe feeds, while the square ring slot feeds striplines terminated in open-circuited stubs for coupling energy to each pair of orthogonal feed points. The first and second stripline feeds are not coplanar in order that each stub terminates past a center point of the element. The square ring slot operates as a high frequency band radiator and the shorted square ring operates as a low frequency band radiator, and both bands radiate substantially simultaneous dual-orthogonally-polarized modes. The modes can be any combination of dual-Circular Polarization (CP) and dual-Linear Polarization (LP), depending on the geometry of the radiators.application/pdfen-USPatenthttp://pimg-fpiw.uspto.gov/fdd/71/507/083/0.pdf12792092343/769343/700.MS343/767H01Q21/24H01Q5/40H01Q9/0435H01Q13/1068350771