RX SHUNT SWITCHING ELEMENT-BASED RF FRONT-END CIRCUIT

摘要

RF front-end circuitry, which includes a first RF low noise amplifier (LNA) and a first reconfigurable RF filter, is disclosed. The RF front-end circuitry operates in one of a group of operating modes. The first reconfigurable RF filter, which has a first reconfigurable RF filter path, includes a first receive (RX) shunt switching element coupled between the first reconfigurable RF filter path and ground. The first reconfigurable RF filter path is coupled to an input of the first RF LNA. The group of operating modes includes a first operating mode and a second operating mode. During the first operating mode, the first RX shunt switching element is ON. During the second operating mode, the first RX shunt switching element is OFF and the first RF LNA receives and amplifies a first filtered RF receive signal from the first reconfigurable RF filter to provide a first receive signal.

主权项

1. RF front-end circuitry comprising:
a first reconfigurable RF filter having a first reconfigurable RF filter path and comprising a first receive (RX) shunt switching element coupled between the first reconfigurable RF filter path and ground; and a first RF low noise amplifier (LNA) having an input coupled to the first reconfigurable RF filter path, wherein:
the RF front-end circuitry has a first common connection node and is configured to operate in one of a plurality of operating modes;the plurality of operating modes comprises a first operating mode and a second operating mode;during the first operating mode, the first RX shunt switching element is configured to be ON; andduring the second operating mode, the first RX shunt switching element is further configured to be OFF and the first RF LNA is configured to receive and amplify a first filtered RF RX signal from the first reconfigurable RF filter via the first common connection node to provide a first RX signal.