Patents by Inventor Ronald Edgar Ham

Ronald Edgar Ham has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Automatic electronically tuned electrically small transmitting antenna system
    Patent number: 8552911
    Abstract: In an automatic tuning system for a loop antenna having a single electronically variable reactance element, the reactive component sense of the antenna impedance is determined over a wide range of frequency. The electronically variable reactance component of the antenna is automatically minimized by a feedback loop driving a voltage variable capacitance until the reactive component of the antenna impedance is virtually zero and the antenna impedance is hence resistive. The adjustment of the electronically variable capacitance is by a variable high voltage power supply controlled by a feedback amplifier or by a high voltage feedback amplifier.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: October 8, 2013
    Inventor: Ronald Edgar Ham
  • AUTOMATIC ELECTRONICALLY TUNED ELECTRICALLY SMALL TRANSMITTING ANTENNA SYSTEM
    Publication number: 20130016018
    Abstract: In an automatic tuning system for a loop antenna having a single electronically variable reactance element, the reactive component sense of the antenna impedance is determined over a wide range of frequency. The electronically variable reactance component of the antenna is automatically minimized by a feedback loop driving a voltage variable capacitance until the reactive component of the antenna impedance is virtually zero and the antenna impedance is hence resistive. The adjustment of the electronically variable capacitance is by a variable high voltage power supply controlled by a feedback amplifier or by a high voltage feedback amplifier.
    Type: Application
    Filed: July 11, 2011
    Publication date: January 17, 2013
    Inventor: Ronald Edgar Ham