REFLECTION-BASED RADIO FREQUENCY MULTIPLEXERS

摘要

A radio frequency multiplexer, which supports a plurality of frequency bands, comprises a common node, a plurality of single band nodes, and a plurality of parallel branches. Each of the plurality of parallel branches is designated to one of the plurality of frequency bands and connects the common node and one of the plurality of single band nodes. A particular branch of the parallel branches may comprises a filter for a desired frequency band that passes through the particular branch, a quadrature hybrid coupler coupled to the filter, and a set of one or more other filters for one or more other frequency bands in the plurality of frequency bands respectively. The set of one or more other filters is coupled to the quadrature hybrid coupler for rejecting the one or more other frequency bands by the particular branch.

主权项

1. A radio frequency multiplexer supporting a plurality of frequency bands, comprising:
a common node; a plurality of single band nodes; a plurality of parallel branches, wherein each parallel branch is dedicated to one of the plurality of frequency bands, wherein each parallel branch connects the common node and one of the plurality of single band nodes, and wherein a particular branch of the parallel branches comprises:
a filter configured to pass a desired frequency band through the particular branch;a quadrature hybrid coupler coupled to the filter; anda set of one or more other filters corresponding to one or more other frequency bands of the plurality of frequency bands, wherein the set of one or more other filters and the quadrature hybrid coupler are coupled and configured to reject the one or more other frequency bands by the particular branch.