Patent ID: 11879963
Assignee: STMICROELECTRONICS S.R.L.
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 3:
4. A circuit, comprising:
a tunable resonance circuit comprising:
an inductance directly electrically connected in series between first and second nodes;
a variable capacitance directly electrically connected between the first and second nodes; and
a set of switched capacitances coupled between the first and second nodes, the set of switched capacitances including a plurality of capacitance units, each capacitance unit comprising a first capacitance for that capacitance unit directly electrically connected between the first node and a switch and a second capacitance for that capacitance unit directly electrically connected between the switch and the second node;

control circuitry configured to receive an input control signal and connected to control the switches of the set of switched capacitances, wherein the control circuitry comprises a digital-to-analog converter configured to receive the input control signal as input and generate a control word for the switches of the set of switched capacitances as output; and
a biasing circuit directly electrically connected to the tunable resonance circuit at the first and second nodes.