"Antennas with orthogonal elements that are combined in phase quadrature such as the crossed dipole with external 90 degree hybrid coupler. This type of antenna can produce right-hand and left-hand circular polarization simultaneously."
"Simultaneously"? Can anyone explain how this works? What is the confguration of the coil and how is the signal applied to produce this effect?
I don't understand how the "simultaneous" LH and RH fields would not cancel each other out. Perhaps they mean the applied signal can cycle intermittently between LH and RH.
Tomas Ferrel