Back to results
US 11,606,087 B2Granted
Methods and apparatuses for use in tuning reactance in a circuit device
AssigneepSemi Corporation
InventorsRonald Eugene Reedy, Dan William Nobbe, Tero Tapio Ranta, Cheryl V. Liss, David Kovac
Life of this patent
Estimating the term…
Abstract
Methods and apparatuses for use in tuning reactance are described. Open loop and closed loop control for tuning of reactances are also described. Tunable inductors and/or tunable capacitors may be used in filters, resonant circuits, matching networks, and phase shifters. Ability to control inductance and/or capacitance in a circuit leads to flexibility in operation of the circuit, since the circuit may be tuned to operate under a range of different operating frequencies.
Claims16
A tunable inductor, comprising:
- a first RF terminal and a second RF terminal;
- a fixed inductor having a first terminal connected directly to the first RF terminal, and a second terminal connected directly to the second RF terminal;
- one or more digitally tunable capacitors, each comprising:
- a circuital arrangement including a switch or a series arrangement of two or more switches, the circuital arrangement having a first terminal connected to the first RF terminal, and a second terminal connected to the second RF terminal;
- one or more capacitive elements connected in series with the circuital arrangement;
- wherein:
- the circuital arrangement is configured so that enabling or disabling the switch or the two or more switches sets an effective inductance of the fixed inductor to a desired value by varying the capacitance between the first and the second RF terminals.
4 more elements
A tunable inductor comprising:
- a first RF terminal and a second RF terminal;
- a fixed inductor having a first terminal connected directly to the first RF terminal, and a second terminal connected directly to the second RF terminal;
- one or more digitally tunable capacitors, each comprising:
- an electronic circuit block including a switch or a series arrangement of two or more switches, the electronic circuit having a first terminal connected to the RF first terminal, and a second terminal connected to the second RF terminal;
- one or more capacitive elements connected in series with the electronic circuit block;
- wherein:
- the electronic circuit block is configured to receive a control signal to enable or disable the switch or the two or more switches, thereby adjusting the capacitance between the first and the second RF terminals to set an effective inductance of the fixed inductor to a desired value.
4 more elements
Dependencies are inferred from the claim text.