Patents by Inventor Michael H. Myers

Michael H. Myers 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: 6324383
    Abstract: The non-linearity of a power amplifier (12) and a radio frequency variable attenuator (44) are reduced by providing multiplying factors generated by a signal processor (32) and applied to the multiplying function of the attenuator (44). As a result, an input signal can be transmitted with increased accuracy which meets FAA standards for aviation radio transmission.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: November 27, 2001
    Assignee: TRW Inc.
    Inventor: Michael H. Myers
  • Patent number: 5834986
    Abstract: A method for generating minimum shift keying (MSK) modulation signals with relatively reduced energy sidelobes relative to known methods. In one embodiment, a second derivative of the phase waveform is taken and convolved with a selectable smoothing function and integrated twice to generate a smooth phase waveform S2D.sub.-- MSK (i)=where .o slashed. (i)=.pi. i d(i)/2T. In the alternate embodiment, the sidelobe energy can be varied by simply changing the smoothing function, which can be stored in a lookup table. In the embodiment, the MSK modulation signal has a constant amplitude envelope allowing it to be transmitted using class C amplifiers. Since the embodiment provides continuous phase derivatives, the frequency and thus the sidelobe energy is sufficiently reduced to minimize interference with cosite equipment and nearby communication channels bands.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: November 10, 1998
    Assignee: TRW Inc.
    Inventor: Michael H. Myers
  • Patent number: 4580102
    Abstract: An input signal is multiplied by a reference and quadrature signal and the two output signals are integrated and multiplied by a ramp signal, having a period equal to the maximum period of the input signal, and integrated to provide four output signals. The integrated product of the input, reference and ramp signals is multiplied by the integrated product of the input and quadrature signals and the product is subtracted from the product signal of the integrated product of the input and reference signals multiplied by the integrated product of the input, quadrature and ramp signals. The difference output signal is the gradient of the envelope of the maximum posterior-probability estimate of the frequency of the input signal.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: April 1, 1986
    Assignee: Motorola, Inc.
    Inventor: Michael H. Myers
  • Patent number: 4454604
    Abstract: A system for virtual time base direct synchronization in which a hopping sequence signal grossly synchronized with a received hopped base band has a fine synchronization correction performed by a virtual time shift of the hopping reference through first derivative subtraction of the phase of a hopped carrier signal, which in effect brings the hopping sequence signal into time alignment with the received hopped base band.
    Type: Grant
    Filed: April 2, 1982
    Date of Patent: June 12, 1984
    Assignee: Motorola Inc.
    Inventor: Michael H. Myers
  • Patent number: 4442433
    Abstract: An array of signals is adapted and dithered by use of a weight signal, a gradient signal with a carrier at a first frequency and an orthogonal sequence signal with a carrier at a second frequency, the dithered signals are then operated on to extract an output signal, a gradient signal, and a weight signal, which gradient and weight signals along with a generated orthogonal sequence signal, are then fed back for use in the dithering process. The carriers at different frequencies provide separability of predetermined components during the operation.
    Type: Grant
    Filed: July 1, 1982
    Date of Patent: April 10, 1984
    Assignee: Motorola Inc.
    Inventors: Michael H. Myers, Sam Daniel
  • Patent number: 4286268
    Abstract: An adaptive antenna array including a main antenna and at least one auxiliary antenna with a plurality of weight adjusting channels and circuitry for adjusting the gain of each channel periodically switched into each channel, and each channel further including memory means for continued gradient control during period that the circuit is connected to other channels.
    Type: Grant
    Filed: April 13, 1979
    Date of Patent: August 25, 1981
    Assignee: Motorola Inc.
    Inventors: Sam M. Daniel, Michael H. Myers