Patents by Inventor Bernard M. Cuddy

Bernard M. Cuddy 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).

  • Low noise microwave synthesizer employing high frequency combs for tuning drift cancel loop
    Patent number: 6570458
    Abstract: A microwave synthesizer includes a drift-cancel loop having a narrow-band input, a low-frequency comb input, a wide-band input, and an output for providing an adjustable-frequency output signal. A narrow-band synthesizer is coupled to the narrow-band input, and a comb generator is coupled to the low-frequency comb input. Instead of using a wide-band synthesizer to drive the wide-band input, as conventional topologies have done, the instant invention employs a highly stable, low noise high frequency oscillator. The output of the oscillator is mixed with the output of the comb generator to produce low-noise, high frequency combs. The low-noise, high frequency combs are then used to drive the wide-band input of the drift-cancel loop. Significant reductions in phase noise can be achieved as compared with conventional designs.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: May 27, 2003
    Assignee: Teradyne, Inc.
    Inventor: Bernard M. Cuddy
  • Low noise microwave synthesizer employing high frequency combs for tuning drift cancel loop
    Publication number: 20020196088
    Abstract: A microwave synthesizer includes a drift-cancel loop having a narrow-band input, a low-frequency comb input, a wide-band input, and an output for providing an adjustable-frequency output signal. A narrow-band synthesizer is coupled to the narrow-band input, and a comb generator is coupled to the low-frequency comb input. Instead of using a wide-band synthesizer to drive the wide-band input, as conventional topologies have done, the instant invention employs a highly stable, low noise high frequency oscillator. The output of the oscillator is mixed with the output of the comb generator to produce low-noise, high frequency combs. The low-noise, high frequency combs are then used to drive the wide-band input of the drift-cancel loop. Significant reductions in phase noise can be achieved as compared with conventional designs.
    Type: Application
    Filed: June 12, 2001
    Publication date: December 26, 2002
    Inventor: Bernard M. Cuddy
  • Attenuating circuit
    Patent number: 4952893
    Abstract: An attenuating circuit including a reference signal path that is attenuated by an amount which is related to the attenuation in an attenuation signal path for the purpose of improving attenuation accuracy.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: August 28, 1990
    Assignee: Teradyne, Inc.
    Inventor: Bernard M. Cuddy
  • Electrical circuitry support apparatus
    Patent number: 4894753
    Abstract: Electrical circuitry support apparatus including a card cage having slots for removably receiving circuit boards, and a plurality of circuit boards in the slots, at least one circuit board being a high-frequency board carrying an enclosure containing a high-frequency device. The enclosure provides shielding inhibiting transmission of high-frequency signals to or from the device.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: January 16, 1990
    Assignee: Teradyne, Inc.
    Inventors: Brian C. Wadell, Bernard M. Cuddy