Patents Represented by Attorney Williams V. Adams
  • Patent number: 7609971
    Abstract: An multi-beam multifunction electro optical scanning antenna having a first variable wavelength tunable laser having an output wavelength variable within a first range and a second variable wavelength tunable laser having an output wavelength variable within a second range, different from the first range. The outputs from both lasers are modulated by independent microwave sources and the modulated outputs from both lasers are combined by an optical combiner into a combined output signal. An antenna array includes a plurality of radiators and a photodetector is associated with each radiator which converts the combined optical output from the lasers to microwave signals. Beam splitters divide the combined output signals to each of the antenna radiators while first and second wavelength-dependent time delay elements are optically connected in series between each sequential beam splitter.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: October 27, 2009
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Weimin Zhou