Patents Represented by Attorney Edward M. Rooney
  • Patent number: 4445223
    Abstract: An apparatus and method for determining the period and frequency of a signal intefering with a desired Loran C signal are provided. A sample of the interfering signal is generated at a time corresponding to the peak of the autocorrelation function of the interfering signal with respect to the predetermined pulse tracking reference point of the Loran C signal. Indicia of the period and frequency of the interferer is obtained from the timing of the sample generated at the autocorrelation function peak.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: April 24, 1984
    Assignee: Motorola, Inc.
    Inventors: Steven C. Jasper, Robert V. Janc, David S. Robins, Michael H. Retzer
  • Patent number: 4278957
    Abstract: A filter assembly for UHF or microwave frequency range includes a bottom cover plate, a top cover plate and an unitary cast multicell frame with each cell having a resonating rod integrally cast with the frame. Selected ones of the rod have taps which have been cast as integral parts of the single integrally cast multicell. Each tap may include a web cast as an integral part of the unitary cast frame, the webs being dimensioned to adjust the impedance ratio of RF energy coupled to the corresponding cell. The exterior of the top cover plate may have recesses adapted to receive circuit boards therein so that the taps to the resonating rods extending through the frame can be directly connected to the terminal of the circuit boards to eliminate cables to the circuits from the taps.
    Type: Grant
    Filed: July 16, 1979
    Date of Patent: July 14, 1981
    Assignee: Motorola, Inc.
    Inventors: Terrence M. Starai, John H. Champlin, Jr., Randall J. Johnson