Miniature Filters and Multiplexers for Advanced Multifunction RF Systems AMRFSCET on Transmit/Receive Isolation

摘要

A miniature, low cost and high performance multiplexer has been successfully developed. The multiplexer provides two contiguous channel filters, DC to 2.5 GHz for channel 1 and 2.5 to 5.0GHz for channel 2. The diplexer has very high channel to channel isolation (> 60dB), low insertion loss (<0.7dB center) and good VSWR (< 17dB return loss over the entire band). The printed diplexer has low production and small size ( 1.05(inch)x0.10(inch)x2.40(inch)) that is an ideal candidate for affordable phase array applications.