Substrate integrated waveguide filter showing improved stopband performance and fractional bandwidth using different input/output topologies

[摘要] In this work bandpass filter based on SIW technology with an adequate fractional bandwidth as well as refinement in the stopband performance is presented. Its application lies with the receiver filter working in the Ka band used mainly in the ground terminal for satellite communication. Additionally analysis of divergent input/output arrangement is also demonstrated. Three SIW filter having a varying passband from 19.2GHz -21.2GHz depending on the input/output are synthesized on a planar substrate having height of 0.508mm RT/duroid 6002 using periodically arranged metal via holes through a regulated PCB process. Simulated outputs has a in-band insertion loss 0.9dB and the improved stopband attenuation within the frequency range of 29.5GHz - 31GHz is around 45 dB. It is observed that the experimented results coincide completely with the results simulated in HFSS/CST.

[发布机构] School of Electronics Engineering, VIT University, Vellore, Tamil Nadu; 632014, India^1

[效力级别] 工业技术

[关键词] Fractional bandwidths;Frequency ranges;Ground terminals;Improved stopband;ITS applications;Planar substrate;Satellite communications;Stopband performance