Dual/Single Band Conical-Beam Nested Horn Antennas With Dual/Single Pointing Angles

Three conical-beam nested horn antennas are presented. They are X/Ka-band/dual pointing angle antenna, X/Ka-band/single pointing angle antenna and X-band/dual pointing angle antenna. A radial-line waveguide 4-way power divider with four SMA connectors has been employed to feed the outer nested horn maintaining the circularly symmetric excitation. The inner nested horn is fed by a simple SMA connector. The design procedure and all the dimensions of these antennas are given along with the simulated and the measured results. Good agreement between them has been observed.