Skyworks Solutions, Inc.

Brian Blu Duverneay

David Richard Pehlke

Shiaw Wen Chang

Sarah Shiui Xu

Sarah Shihui Xu

Improved switched multiplexer architecture for supporting carrier aggregation in front-end applications. Front end architectures are disclosed that use two filters for a particular frequency band to allow for carrier aggregation using bands that at least partially overlap in frequency. An antenna switch module can be used to independently couple individual filters to an antenna to support a variety of carrier aggregation modes. Switches that connect to the two filters that split the particular frequency band can be configured to operate independently so as to only pass signals within a sub-band of the particular frequency band when operating in certain carrier aggregation modes.

Carrier aggregation using split band filters

Improved switched multiplexer architecture for supporting carrier aggregation in front-end applications. A method is disclosed for providing a plurality of switchable paths between an assembly of filters and an antenna port. The method includes connecting a first filter of the filter assembly to the antenna port using a first switch of a switching circuit. The method also includes connecting a second filter of the filter assembly to the antenna port using a second switch of the switching circuit, the second switch independently operated from the first switch. The method also includes passing a first frequency range associated with a first transmission frequency range of a first band using the first filter. The method also includes passing a second frequency range associated with a first receive frequency range of the first band and with a second receive frequency range of a second band using the second filter.

Methods for providing carrier aggregation

Improved switched multiplexer architecture for supporting carrier aggregation in front-end applications. In some embodiments, an N-plexing system can include an assembly of filters configured to provide N filtered paths, and a switching circuit in communication with the assembly of filters. The switching circuit can be configured to provide a plurality of switchable paths between the assembly of filters and an antenna port to allow simultaneous operation between the N filtered paths and the antenna port. In some embodiments, N can be 4 for a quadruplexing system or 2 for a duplexing system, and such a system can be implemented in a front-end module (FEM) for wireless devices.

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Wyoming, MI, United States of America

Brian Blu Duverneay