Patent ID: 8063839
Filing Date: 2011-11-22
Classification: H01Q

Abstract:
1. A tunable antenna system comprising: an antenna structure, including an internal trace coupled to a first arm of a plurality of antenna arms, wherein the internal trace passes under a second arm of the plurality of antenna arms; a dynamic capacitive loading device, having an achievable dynamic capacitive device tuning range, coupled to the internal trace of the antenna structure, wherein the dynamic capacitive loading device has a variable capacitive load that depends upon voltage from a voltage source provided on a voltage input of the dynamic capacitive loading device; a performance quantification engine coupled to the dynamic capacitive loading device, wherein, in operation, the performance quantification engine performs first stage tuning one or more times using a first performance metric of a plurality of performance metrics then uses a second performance metric of the plurality of performance metrics to accomplish second stage tuning, wherein the first stage tuning has lower complexity than the second stage tuning; wherein, in operation, voltage provided by the voltage source is adjusted from a first setting that is within the achievable dynamic capacitive device tuning range through a set of second settings that are within the achievable dynamic capacitive device tuning range to a third setting that is within the achievable dynamic capacitive device tuning range in accordance with the first or second performance metric to tune the antenna.