Patents by Inventor James E. Kietzer

James E. Kietzer 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).

  • Combined limiting/AGC IF system
    Patent number: 4967163
    Abstract: A gain control system for a receiver that combines some of the features of oth limiting and AGC. The AGC loop of the present invention has a relatively long time constant which reduces the gain so that the desired signal is only 10 to 15 db into limiting. This degree of limiting provides instantaneous control of small changes in signal level, but prevents the receiver from instantaneously opening to full gain in the case of loss of signal. This prevents erroneous data from being received during a time interval in which it is expected that the original signal will return.
    Type: Grant
    Filed: September 17, 1973
    Date of Patent: October 30, 1990
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: James E. Kietzer