Patents by Inventor Lakshminarashimha C. Upadhyayula

Lakshminarashimha C. Upadhyayula 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).

  • Signal switching matrix
    Patent number: 4399439
    Abstract: An M by N switch matrix includes N input switches each single-pole M-throw, M output switches each N-throw single-pole with the N*M outputs of the N input switches coupled directly to respective ones of the N*M inputs of the M output switches whereby a signal applied at any of the N input switches can be coupled to the output of any one of the M output switches. The switches may consist of a plurality of dual-gate field effect transistors enabling the switching matrix to be utilized at microwave frequencies.
    Type: Grant
    Filed: November 23, 1981
    Date of Patent: August 16, 1983
    Assignee: RCA Corporation
    Inventor: Lakshminarashimha C. Upadhyayula