Endfire Circularly Polarized Antenna for CubeSat/SmallSat applications

This article presents the design of a Circularly Polarized (CP) end-fire antenna at 8 GHz. Complementary magnetic and electric dipoles are used to generate the CP. A phase shifting line connects both the dipoles which provides the necessary phase shift to get proper CP. Taper section of substrate integrated waveguide (SIW) feed is used to excite the dipoles. The antenna has a broad beam width in the elevation plane and can find applications in small satellite TT&C application.