Simulation and implementation of a new X-band 1: 4 power divider/combiner based on a new waveguide H-plane folded magic-T

Abstract

This paper presents the simulation and fabrication of a new power divider/combiner based on a new waveguide H-plane folded magic-T structure. Measurements of the fabricated magic-T confirm the accuracy of the optimization algorithms existing in the CST software (Genetic algorithm, Particle Swarm Optimization algorithm PSO etc.). The magic-T structure exhibits moderate bandwidth response in the frequency range of 8-10 GHz. Also, it shows that the return loss is better than -15 dB, the insertion loss about -3 4 dB, and the isolation between the two output ports better than -25 dB in the frequency range of 8.4-10 GHz, with good transmission phase characteristics. Based on this magic-T structure, a 1: 4 power divider/combiner is simulated and tested. The measured results show that the insertion loss is about -6 5±0 25 dB, the return loss less than -15 dB, the isolation among the output ports less than -25 dB, the combining e±ciency about 89%, and the transmission phase differences are about ±2° in the frequency range of 8-10 GHz.