Method and apparatus for adjusting the timing of radio antenna tuning
AssigneeResearch In Motion RF, Inc.
InventorsMatthew Greene, Carsten Hoirup, Keith Manssen
Life of this patent
Estimating the term…
Abstract
A system that incorporates teachings of the present disclosure may include, for example, determining, by a controller of a mobile communication device, a phase shift criteria and an amplitude shift criteria associated with a modulation being implemented by the mobile communication device. The controller can determine a group of tuning steps that satisfies the phase and amplitude shift criteria and that provides a desired tuning step for a matching network of the mobile communication device. Additional embodiments are disclosed.
Claims22
A mobile communication device, comprising:
- an antenna;
- a transceiver coupled with the antenna;
- a matching network coupled with the transceiver and the antenna, wherein the matching network includes a variable reactance element;
- and
- a controller coupled with the matching network, wherein the controller determines a desired tuning step to be applied to the matching network to adjust a variable reactance of the variable reactance element, wherein the controller determines a phase shift criteria associated with a modulation being implemented by the mobile communication device, and wherein the controller selects a group of tuning steps that satisfies the phase shift criteria and that provides the desired tuning step.
A method, comprising:
- determining, by a controller of a mobile communication device, a phase shift criteria and an amplitude shift criteria associated with a modulation being implemented by the mobile communication device;
- and
- determining, by the controller, a group of tuning steps that satisfies the phase and amplitude shift criteria and that provides a desired tuning step for a matching network of the mobile communication device.
A mobile communication device, comprising:
- a memory storing a look-up table, wherein the look-up table is indexed based on a modulation type;
- a matching network having a voltage tunable capacitor;
- and
- a controller coupled with the memory and the matching network, wherein the controller determines a desired tuning step to be applied to the matching network to adjust a variable capacitance of the voltage tunable capacitor, wherein the controller determines maximum phase and amplitude shift limits associated with a modulation being implemented by the mobile communication device based on the look-up table, and wherein the controller generates control signals representative of a group of tuning steps that does not exceed the maximum phase and amplitude shift limits and that provides the desired tuning step.
A mobile communication device, comprising:
- an antenna;
- a transceiver coupled with the antenna;
- a matching network coupled with the transceiver and the antenna, wherein the matching network includes a variable reactance element;
- and
- a controller coupled with the matching network, wherein the controller determines a desired tuning step to be applied to the matching network to adjust a variable reactance of the variable reactance element, and wherein the controller selects a group of tuning steps that provides a linear phase shift and that provides the desired tuning step.
Dependencies are inferred from the claim text.