Conceptual Design of a Semi-Dual Polarized Monopulse Antenna by Computer Simulation

Presented in this paper is a conceptual design by computer simulation of monopulse reflector antenna with dual-circularly polarized sum patterns and linearly azimuth elevation difference patterns, which can be called semi-dual antenna. The proposed consists five-element feed prime-focus parabolic reflector. novelty the consisting square waveguide channel radiator rectangular radiators. separation dual circular polarization realized septum polarizer. pattern obtained feeding two waveguides opposite directions using coaxial probe. geometry requires only power combiners for comparator network while providing dual-polarized performance comparable to full scheme. concept shown simulation. designed first, then combined operates at 14.5–16.0 GHz, shows excellent characteristics: 36.1–36.7 dBc directivity 0.65 dB boresight axial ratio 32.6–32.9 dBi 1.56–1.66° crossover angle.