The quadrature feed network, beyond offering excellent circular polarization and minimum axial ratio, provides low phase ripple, excellent pattern symmetry and a stable phase center.
The C146 Series GPS Antennas are available in many different models, to suit airborne (both subsonic and supersonic), marine and land applications. These antennas are low profile (1.5 inches high) and are easily installed (5 inches or less diameter mounting base). An optional choke ring, the U305-1, is available and is suitable for direct interface with select models within the C146 Series. Use of the U305-1 choke ring mitigates the effects of multipath interference, which would otherwise diminish system accuracy.