High Temperature Superconducting filters to enable high power Public Safety Mobile Broadband

摘要

High Temperature Superconducting filters are known to exhibit high selectivity and low insertion loss. Wireless receivers with HTS filters can maintain links in the presence of adjacent strong and close interference. It has been proposed that for reliable Public Safety LTE Mobile Broadband the high power vehicular user terminals are to be used. However this would cause higher out of band emissions, effectively reducing commercial wireless coverage in adjacent bands, unless guard bands are imposed. Guard bands are resisted by most spectrum regulators because of the spectrum value. In this paper we propose a solution to the problem caused by possibly higher power of PSMB terminals, namely to use HTS filters on adjacent band receivers.