Patents by Inventor Charles C. Meng

Charles C. Meng 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).

  • High efficiency, high power multiquantum well IMPATT device with optical injection locking
    Patent number: 5466965
    Abstract: Multiple quantum wells within an impact avalanche transit time device (IMPATT) utilizing a plurality of gallium arsenide/aluminum gallium arsenide heterojunctions are used to provide a high power, high frequency, high efficiency device operating at 50 GHz and up. The multiple quantum wells defined by the heterojunctions between pairs of gallium arsenide quantum wells and aluminum gallium arsenide barrier layers improves the nonlinearity of the avalanche process within the gallium arsenide quantum wells and reduces the ionization rate saturation limitations. Optical injection locking of the current through the IMPATT device is achieved by irradiating the active layer of the IMPATT device with modulated laser light.
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: November 14, 1995
    Assignee: The Regents of the University of California
    Inventors: Charles C. Meng, Harold R. Fetterman