Patents by Inventor Remy O. Hiramoto

Remy O. Hiramoto 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: 7065153
    Abstract: In a system for modulating an RF carrier, the RF carrier is fed through a lowpass filter and phase shifted approximately ?90 degrees. The RF carrier is also fed through a high pass filter and phase shifted approximately +90 degrees. A switch connected to the output of the lowpass filter and connected to the output of the highpass filter, selects and outputs either the ?90 degree phase shifted carrier output from the lowpass filter or the +90 degree phase shifted carrier output from the highpass filter depending on a switching state determined by data bit information received at a data port to produce a BPSK modulated RF carrier. Two such BPSK modulators may be combined using lowpass and highpass filters to form a QPSK modulator. Two such QPSK modulators may be combined with an attenuator to form a QAM modulator.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: June 20, 2006
    Assignee: The Boeing Company
    Inventors: Susan E. Bach, Kurt W. Loheit, Remy O. Hiramoto, Daniel H. Koyama, Suzanne E. Kubasek, Craig Schulz
  • Patent number: 7003058
    Abstract: A telecommunication system includes a transmitter configured to modulate a forward link RF carrier with a first set of data; a receiver configured to demodulate a second set of data from a return link RF carrier; an orthomode transducer having two linear ports and a circular waveguide port, where one of the linear ports is connected as an input from the transmitter and another linear port is simultaneously connected as an output to the receiver; an antenna; and a linear-to-circular polarizer connected to the circular waveguide port and connected to the antenna, where the linear-to-circular polarizer is configured so that a first linear polarization at the circular waveguide port results in a first circular polarization at the antenna and a second circular polarization at the antenna results in a second linear polarization at the circular waveguide port.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: February 21, 2006
    Assignee: The Boeing Company
    Inventors: Susan E. Bach, Kurt W. Loheit, Remy O. Hiramoto
  • Patent number: 6674326
    Abstract: A digitally controllable nonlinear pre-equalizer system receiving an input signal and generating an output signal, the system including a splitter for dividing the input signal into a first signal path and a second signal path, an attenuator and a time delay element in the first signal path, the attenuator and the time delay element operable to generate a linear signal, a mixer and a vector modulator in the second signal path, the mixer being responsive to a signal from a digital to analog converter coupled to a processor chip providing a digital signal to the digital to analog converter, the mixer and vector modulator operable to generate a nonlinear signal, and a summer for summing the linear signal and the nonlinear signal to generate the output signal.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: January 6, 2004
    Assignee: The Boeing Company
    Inventors: Remy O. Hiramoto, Susan E. Bach, Suzanne E. Kubasek, Thomas Cooper
  • Publication number: 20030231057
    Abstract: A digitally controllable nonlinear pre-equalizer system receiving an input signal and generating an output signal, the system including a splitter for dividing the input signal into a first signal path and a second signal path, an attenuator and a time delay element in the first signal path, the attenuator and the time delay element operable to generate a linear signal, a mixer and a vector modulator in the second signal path, the mixer being responsive to a signal from a digital to analog converter coupled to a processor chip providing a digital signal to the digital to analog converter, the mixer and vector modulator operable to generate a nonlinear signal, and a summer for summing the linear signal and the nonlinear signal to generate the output signal.
    Type: Application
    Filed: June 17, 2002
    Publication date: December 18, 2003
    Applicant: The Boeing Company
    Inventors: Remy O. Hiramoto, Susan E. Bach, Suzanne E. Kubasek, Thomas Cooper
  • Publication number: 20030161419
    Abstract: A telecommunication system includes a transmitter configured to modulate a forward link RF carrier with a first set of data; a receiver configured to demodulate a second set of data from a return link RF carrier; an orthomode transducer having two linear ports and a circular waveguide port, where one of the linear ports is connected as an input from the transmitter and another linear port is simultaneously connected as an output to the receiver; an antenna; and a linear-to-circular polarizer connected to the circular waveguide port and connected to the antenna, where the linear-to-circular polarizer is configured so that a first linear polarization at the circular waveguide port results in a first circular polarization at the antenna and a second circular polarization at the antenna results in a second linear polarization at the circular waveguide port.
    Type: Application
    Filed: February 27, 2002
    Publication date: August 28, 2003
    Applicant: The Boeing Company
    Inventors: Susan E. Bach, Kurt W. Loheit, Remy O. Hiramoto
  • Publication number: 20030147472
    Abstract: In a system for modulating an RF carrier, the RF carrier is fed through a lowpass filter and phase shifted approximately −90 degrees. The RF carrier is also fed through a high pass filter and phase shifted approximately +90 degrees. A switch connected to the output of the lowpass filter and connected to the output of the highpass filter, selects and outputs either the −90 degree phase shifted carrier output from the lowpass filter or the +90 degree phase shifted carrier output from the highpass filter depending on a switching state determined by data bit information received at a data port to produce a BPSK modulated RF carrier. Two such BPSK modulators may be combined using lowpass and highpass filters to form a QPSK modulator. Two such QPSK modulators may be combined with an attenuator to form a QAM modulator.
    Type: Application
    Filed: February 6, 2002
    Publication date: August 7, 2003
    Applicant: The Boeing Company
    Inventors: Susan E. Bach, Kurt W. Loheit, Remy O. Hiramoto, Daniel H. Koyama, Suzanne E. Kubasek, Craig Schulz