Patent ID: 8868014
Filing Date: 2014-10-21
Classification: H01Q

Abstract:
1. An auto tuning system for an antenna, comprising: an electrical interconnect configured to connect to an antenna having a tunable capacitive load, the tunable capacitive load being tunable in response to an applied DC signal voltage; a transmitter coupled to the electrical interconnect and configured to output a calibration signal to the antenna via the electrical interconnect; a signal strength determination module coupled to the electrical interconnect and coupled to a tuning module, and configured to measure power reflected from the antenna when the transmitter outputs the calibration signal to the antenna; the tuning module coupled to the electrical interconnect and coupled to the signal strength determination module, the tuning module configured to intermittently provide a DC signal voltage to the antenna to control the tunable capacitive load, the DC signal voltage determined in response to the measured power from the signal strength determination module; and a storage capacitor coupled to the tuning module and coupled to the electrical interconnect, the storage capacitor configured store the DC signal voltage provided by the tuning module and provide the stored DC signal voltage to the antenna when the tuning module does not provide the DC signal voltage.