Variable impedance matching network and method for the same
First Claim
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1. A variable matching network for use in a multi-band, multi-mode communications device, comprising:
- a gross parameter selector configured to select a first set of parameters for impedance tuning tunable components of the variable matching network from a plurality of predefined gross parameters based on one or more operational conditions associated with a given signal;
a matching optimizer configured to obtain a second set of delta parameters for adjusting the first set of parameters using an optimization algorithm based on one or more of the operational conditions;
a parameter combiner configured to obtain overall matching parameters by adjusting the first set of parameters based on the second set of parameters; and
discrete matching circuitry including the tunable components configurable based on the overall matching parameters to provide dynamic, fine-tune impedance matching.
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Abstract
An improved variable matching network for use in a multi-band, multi-mode communications device provides dynamic, fine-tune impedance matching based on current operational conditions associated with a given signal. In one embodiment, gross parameters are selected based on one or more of the operational conditions. Delta parameters are provided using an optimization algorithm based on one or more of the operational conditions. And the gross and delta parameters are combined to obtain overall matching parameters that dynamically fine-tune discrete matching circuitry.
27 Citations
16 Claims
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1. A variable matching network for use in a multi-band, multi-mode communications device, comprising:
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a gross parameter selector configured to select a first set of parameters for impedance tuning tunable components of the variable matching network from a plurality of predefined gross parameters based on one or more operational conditions associated with a given signal; a matching optimizer configured to obtain a second set of delta parameters for adjusting the first set of parameters using an optimization algorithm based on one or more of the operational conditions; a parameter combiner configured to obtain overall matching parameters by adjusting the first set of parameters based on the second set of parameters; and discrete matching circuitry including the tunable components configurable based on the overall matching parameters to provide dynamic, fine-tune impedance matching. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of providing fine-tune impedance matching at an antenna port of a multi-band, multi-mode communications device, comprising:
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receiving operational conditions associated with a given signal; selecting a first set of parameters for impedance tuning tunable components of matching circuitry from a plurality of predefined gross parameters based on one or more of the operational conditions; obtaining a second set of delta parameters for adjusting the first set of parameters using an optimization algorithm based on one or more of the operational conditions; obtaining overall matching parameters by adjusting the first set of parameters based on the second set of parameters; and dynamically tuning discrete matching circuitry including the tunable components based on the overall matching parameters. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification