E-band Quasi-Planar Power Combining Network Based on Multi-Layer SIW

This paper designs an E-band four channel quasi-planar power combining network based on multi-layer SIW. The design of quasi-planar power divider is completed by inserting a multi-layer SIW into a rectangular waveguide, which realizes the miniaturization and lightweight of the power divider; The transition from SIW to WR-12 rectangular waveguide adopts a vertical transition structure, and the parameters of this structure, such as the coupling hole spacing, coupling hole height, and the length of rectangular metal patch, are optimized, making this dividing network more compact and broadband than the traditional binary dividing mode. The physical test results show that the return loss of the network is better than - 10dB, the insertion loss is less than 1.7dB, and the composite efficiency is more than 85% in the range of 60-90GHz.