Design and Optimization of a Millimetre Wave Compact Folded Magic-T

الملخص EN

A millimetre wave-folded magic-T junction compensated with metal cone is designed using a particle swarm optimization (PSO) algorithm.

An off-centred metallic frustum was used to enhance the bandwidth and a metallic post is used to compensate the mismatched E-arm.

The geometrical parameters of the frustum and the post are optimized by PSO.

The optimized magic-T for W-band application is designed and tested.

The design features are simple in structure and easy to fabricate.

The 2% bandwidth with centre frequency of 94 GHz and return loss less than −20 dB is achieved.