Methods and Apparatuses for use in Tuning Reactance in a Circuit Device
First Claim
Patent Images
1. A tunable inductor, comprising:
- a first RF terminal;
a second RF terminal;
one or more inductive elements connected therebetween, wherein each inductive element is an inductor or a portion thereof; and
a plurality of switches connected with the one or more inductive elements, wherein each switch in the plurality of switches is configured, during operation, to receive a control signal, the control signal controlling inductance applied between the first RF terminal and the second RF terminal by turning on or off switches in the plurality of switches,wherein at least one inductive element in the one or more inductive elements is connected with at least two switches from among the plurality of switches, the at least two switches being serially connected therebetween.
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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.
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Citations
48 Claims
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1. A tunable inductor, comprising:
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a first RF terminal; a second RF terminal; one or more inductive elements connected therebetween, wherein each inductive element is an inductor or a portion thereof; and a plurality of switches connected with the one or more inductive elements, wherein each switch in the plurality of switches is configured, during operation, to receive a control signal, the control signal controlling inductance applied between the first RF terminal and the second RF terminal by turning on or off switches in the plurality of switches, wherein at least one inductive element in the one or more inductive elements is connected with at least two switches from among the plurality of switches, the at least two switches being serially connected therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 44, 47)
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18. A circuital arrangement with a tunable impedance, the circuital arrangement comprising:
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a first RF terminal; a second RF terminal; a fixed reactance, wherein the fixed reactance comprises a fixed inductor or a portion thereof and/or a fixed capacitor; a plurality of switches connected in parallel or series with the fixed reactance, wherein each switch in the plurality of switches is configured, during operation, to receive a control signal; and one or more individual reactances connected with the plurality of switches, wherein at least one individual reactance is connected with at least two switches from among the plurality of switches, the at least two switches being serially connected therebetween, wherein; whether impedance of a particular individual reactance among the one or more individual reactances contributes to impedance of the circuital arrangement is based on a control signal received, during operation, by a particular switch in the plurality of switches that is connected with the particular individual reactance, and the control signal associated with the particular switch turns on or off the particular switch. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 45, 48)
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31. A method for tuning inductance of a device, comprising:
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providing one or more inductive elements connected therebetween, wherein each inductive element is an inductor or a portion thereof; providing a plurality of switches connected with the one or more inductive elements; and applying a plurality of control signals to the plurality of switches, wherein each control signal turns on or off one or more switches in the plurality of switches, thus tuning the inductance of the device, wherein; whether a particular inductive element in the one or more inductive elements contributes to inductance of the device is based on a control signal received by a particular switch in the plurality of switches that is connected with the particular inductive element, and at least one inductive element in the one or more inductive elements is connected with at least two switches from among the plurality of switches, the at least two switches being serially connected therebetween. - View Dependent Claims (32, 33, 34, 35)
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36. A method for tuning impedance of a device, comprising:
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providing a fixed reactance, wherein the fixed reactance comprises a fixed inductor or a portion thereof and/or a fixed capacitor; providing a plurality of switches connected in parallel or series with the fixed reactance; providing one or more individual reactances connected with the plurality of switches; and applying a plurality of control signals to the plurality of switches, wherein each control signal turns on or off one or more switches in the plurality of switches, thus tuning the impedance of the device, wherein; whether impedance of a particular individual reactance among the one or more individual reactances contributes to impedance of the device is based on a control signal received by a particular switch in the plurality of switches that is connected with the particular individual reactance, and at least one individual reactance is connected with at least two switches from among the plurality of switches, the at least two switches being serially connected therebetween. - View Dependent Claims (37, 38)
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39. A system for tuning impedance to generate a target signal, the system comprising:
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a tunable element configured, during operation, to receive a first signal and generate a second signal; and a controller configured, during operation, to provide a plurality of control signals to the tunable element, wherein impedance of the tunable element is a function of the plurality of control signals and the plurality of control signals is a function of the second signal and the target signal. - View Dependent Claims (40, 41, 42, 43)
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46. A method for tuning impedance to generate a target signal, the method comprising:
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providing a tunable element; applying a first signal and a plurality of control signals to the tunable element, wherein impedance of the tunable element is a function of the plurality of control signals; generating a second signal based on the applying; and adjusting the plurality of control signals based on the second signal and the target signal.
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Specification