Circuit multiplexers of 6- and 10-GHz multistandard transciver based on LCP and LTCC

The modeling results for three-port multiplexer (MUX) based on microstrip coupled lines (MCL) are presented. This MUX is adapted for two communication standards. The obtained characteristics of pass-bands show a multiplexer operation in ranges of 5.75 ... 5.95 GHz and 9.95 ... 10.15 GHz in one transmit direction, and also 6.25 ... 6.45 GHz and 10.45 ... 10.65 GHz in other transmit direction. Results of modeling of 10-GHz LTCC-filter, based on helical inductors (HI) as a variant of alternative realization of strip filters for compact multiplexers of SHA range, are presented.