Band-pass Power Divider Based on Spoof Surface Plasmon Polaritons and Substrate Integrated Waveguide

A novel band-pass power divider is proposed through combining spoof surface plasmon polaritons (SSPPs) and substrate integrated waveguide (SIW). In such hybrid design, both the high-pass transmission of SIW and low-pass transmission of SSPP have been restrained. The lower and upper cutoff frequencies can be adjusted independently by changing the parameters of SIW and SSPPs. The energy is evenly distributed to both output terminals, taking advantage of the high-confinement of SSPP modes. Thus, a band-pass power divider transmission is achieved. A prototype is simulated with operating band from 7.3GHz to 10.3GHz. The transmission coefficients of two output terminals are around -3dB within the whole band.