Methods for tuning an adaptive impedance matching network with a look-up table
First Claim
1. A method comprising:
- determining, by a controller of a communication device, a parameter associated with a communication device, wherein the parameter is selected from a group of parameters consisting essentially of complex reflection coefficient, current drain, incident power, reflected power, temperature, input power level, reliability metrics, and linearity metrics;
identifying, by the controller, a tuning step based on determining a closest match to the parameter in a lookup table stored in the communication device, wherein the lookup table contains sets of parameters corresponding to matched states for a tunable impedance matching network of the communication device;
dividing the tuning step into a group of tuning steps; and
tuning the tunable impedance matching network utilizing the group of tuning steps.
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Abstract
Methods for generating a look-up table relating a plurality of complex reflection coefficients to a plurality of matched states for a tunable matching network. Typical steps include measuring a plurality of complex reflection coefficients resulting from a plurality of impedance loads while the tunable matching network is in a predetermined state, determining a plurality of matched states for the plurality of impedance loads, with a matched state determined for each of the plurality of impedance loads and providing the determined matched states as a look-up table. A further step is interpolating the measured complex reflection coefficients and the determined matching states into a set of complex reflection coefficients with predetermined step sizes.
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Citations
18 Claims
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1. A method comprising:
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determining, by a controller of a communication device, a parameter associated with a communication device, wherein the parameter is selected from a group of parameters consisting essentially of complex reflection coefficient, current drain, incident power, reflected power, temperature, input power level, reliability metrics, and linearity metrics; identifying, by the controller, a tuning step based on determining a closest match to the parameter in a lookup table stored in the communication device, wherein the lookup table contains sets of parameters corresponding to matched states for a tunable impedance matching network of the communication device; dividing the tuning step into a group of tuning steps; and tuning the tunable impedance matching network utilizing the group of tuning steps. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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determining, by a controller of a communication device, a parameter associated with a communication device; identifying, by the controller, a tuning step based on determining a closest match to the parameter in a lookup table, wherein the lookup table contains sets of parameters corresponding to matched states for a tunable impedance matching network of the communication device; dividing the tuning step into a group of tuning steps, wherein the dividing of the tuning step into the group of tuning steps is based on a maximum allowable tuning step according to an operational specification; and tuning the tunable impedance matching network utilizing the group of tuning steps. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification