Patents by Inventor Frank J. Cerny, Jr.

Frank J. Cerny, Jr. 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).

  • Patent number: 5276685
    Abstract: There is provided a method of digital Automatic Gain Control (AGC) in a receiver having limited dynamic range, particularly for discontinuous signals. The method comprises detecting the level of a received and AGC'd discontinuous signal, comparing the level of the AGC'd signal relative to the dynamic range of the receiver, and adjusting the AGC to establish a desired relationship between the AGC'd signal and the dynamic range limitation. There is also provided a method of handoff in a TDMA cellular-type transmission system utilizing this method of AGControl.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: January 4, 1994
    Assignee: Motorola, Inc.
    Inventors: James F. M. Kepler, David E. Borth, Frank J. Cerny, Jr.
  • Patent number: 4369522
    Abstract: A singly-balanced active mixer circuit is disclosed for developing an IF signal by combining an RF signal and a local oscillator (LO) signal. The RF and LO signals are applied to a strip transmission line ring which provides balanced components of the LO signal to a pair of active devices arranged in an singly-balanced active mixer. The active devices are coupled directly, or via a balanced PI-network to the primary winding of an output transformer for application to the following IF stage of the radio receiver. DC biasing of the active devices is provided via a floating tap on the primary winding of the output transformer which is not bypassed at the input, LO and IF frequencies. The singly balanced active mixer circuit may be advantageously utilized in a radio having a receiver with broadband front-end RF selectivity.
    Type: Grant
    Filed: August 30, 1979
    Date of Patent: January 18, 1983
    Assignee: Motorola, Inc.
    Inventors: Frank J. Cerny, Jr., George D. Helm, Ronald G. Wesoloski
  • Patent number: 4369520
    Abstract: A receiving system is disclosed that substantially instantaneously receives an RF signal. The inventive receiving system may be advantageously utilized at a central station of a mobile radio system for providing an omnidirectional receiving pattern. Both voice and digital information signals modulated on the RF signal transmitted from a mobile station are substantially instantaneously acquired by the central station. The receiving system includes an omnidirectional antenna configuration having a plurality of spatially disposed directional sector antennas, converting circuitry for converting the RF signals received by each directional sector antenna to an IF signal, IF bandpass filters for filtering each of the IF signals, and a maximal-ratio predetection diversity combiner for continuously combining the filtered IF signals to provide a composite IF signal so that any received RF signal is substantially instantaneously acquired.
    Type: Grant
    Filed: March 22, 1979
    Date of Patent: January 18, 1983
    Assignee: Motorola, Inc.
    Inventors: Frank J. Cerny, Jr., James J. Mikulski
  • Patent number: 4193036
    Abstract: A singly-balanced active mixer circuit is disclosed for developing an IF signal by combining an RF signal and a local oscillator (LO) signal. The RF and LO signals are applied to a strip transmission line ring which provides balanced components of the LO signal to a pair of active devices arranged in a singly-balanced active mixer. The active devices are coupled directly, or via a balanced PI-network to the primary winding of an output transformer for application to the following IF stage of the radio receiver. The singly balanced active mixer circuit may be advantageously utilized in a radio having a receiver with broadband front-end RF selectivity.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: March 11, 1980
    Assignee: Motorola, Inc.
    Inventors: Frank J. Cerny, Jr., George D. Helm, Ronald G. Wesoloski
  • Patent number: D350345
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: September 6, 1994
    Assignee: Motorola, Inc.
    Inventors: Phillip E. Lindeman, Dominic Errichiello, Frank J. Cerny, Jr.