Switch module with shunt switches
AssigneeSkyworks Solutions, Inc.
InventorStephane Richard Marie Wloczysiak
Life of this patent
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Abstract
A switch module is disclosed, the switch module comprising a first node; a plurality of second nodes; a plurality of series switches; a plurality of signal paths, each signal path defined between one of the plurality of second nodes and the first node and having one of the plurality of switches disposed therebetween, wherein one or more series switches are in a closed state at a time defining one or more active signal paths; and one or more shunt switches coupled between at least one of the signal paths and ground and configured to be in an open state when that signal path is one of the active signal paths.
Claims19
A radio frequency antenna switch module comprising:
- first port;
- a plurality of second ports;
- a plurality of series switches;
- a plurality of signal paths, each signal path defined between one of the plurality of second ports and the first port and having one of the plurality of series switches disposed therebetween;
- one or more shunt switches coupled between at least one of the plurality of signal paths and ground;
- and
- a control circuit configured to control opening and closing of the one or more shunt switches to open any shunt switch of one or more shunt switches that is connected to an active signal path, and to, based on preset logic, selectively close shunt switches of the one or more shunt switches connected to inactive signal paths.
A radio-frequency front end module comprising an antenna switch module, the antenna switch module having:
- a first port;
- a plurality of second ports;
- a plurality of series switches;
- a plurality of signal paths, each signal path defined between one of the plurality of second ports and the first port and having one of the plurality of series switches disposed therebetween;
- one or more shunt switches coupled between at least one of the plurality of signal paths and ground;
- and a control circuit configured to control opening and closing of the one or more shunt switches to open any shunt switch of one or more shunt switches that is connected to an active signal path, and to, based on preset logic, selectively close shunt switches of the one or more shunt switches connected to inactive signal paths.
A wireless device comprising:
- an antenna switch module including a first port;
- a plurality of second ports;
- a plurality of series switches;
- a plurality of signal paths, each signal path defined between one of the plurality of second ports and the first port and having one of the plurality of series switches disposed therebetween;
- one or more shunt switches coupled between at least one of the plurality of signal paths and ground;
- and a control circuit configured to control opening and closing of the one or more shunt switches to open any shunt switch of one or more shunt switches that is connected to an active signal path, and to, based on preset logic, selectively close shunt switches of the one or more shunt switches connected to inactive signal paths.
Dependencies are inferred from the claim text.