A new way of feeding an SSFIP antenna to obtain two orthogonal linear
or two circular (RHCP/LHCP) polarizations is presented. The advantages
of the method are its simplicity, a perfect symmetry of the structure
and of the pattern, and an excellent decoupling between input ports.
The enhanced element retains the desirable properties of conventional
SSFIP elements: wide bandwidth, low cost, robustness, and low thicknes
s and weight. (C) 1994 John Wiley & Sons, Inc.