Patents by Inventor John Joanopoulos

John Joanopoulos 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).

  • Low-loss dielectric resonator having a lattice structure with a resonant defect
    Patent number: 5187461
    Abstract: A dielectric resonator comprising a resonant defect structure disposed in a lattice structure formed of a plurality of multi-dimensional periodically arranged dielectric elements confines electromagnetic energy within a frequency band in the photonic band gap. The frequency band of the confined electromagnetic energy is tunable. The unique structure of the dielectric resonator leads to reduced power dissipation losses when used in microwave and millimeter wave components. Accordingly, the dielectric resonatorBACKGROUNDThis invention was made with government support under Contract Number N00014-86-K-0158 awarded by the Department of the Navy and Contract Number DAAL-03-86-K-0002 awarded by the Department of the Army. The government has certain rights in the invention.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: February 16, 1993
    Inventors: Karl Brommer, Henry Mullaney, Robert Meade, Andrew Rappe, John Joanopoulos