Patents by Inventor Alexander V. Galitsky

Alexander V. Galitsky 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).

  • Radio transceiver having shared modulation and demodulation mixer circuits
    Patent number: 5590413
    Abstract: A radio transceiver including an antenna for transmitting and receiving radio signals, a reception section for selecting a received carrier signal, a transmission amplifier section for amplifying signals to be broadcast, a mixer, coupled between the reception section and the transmission section, a variable frequency generator for generating local frequencies for the mixer, and a first (synphase) quadrature demodulating channel and a second (square) channel demodulating channel. The mixer includes a first switch, a first double balanced (DB) mixer, intermediate frequency (IF) filter, IF amplifier, power divider, and a second DB mixer. These components are used during both transmission and reception by the radio transceiver.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: December 31, 1996
    Assignee: Sun Microsystems, Inc.
    Inventors: Victor K. Kondratiev, Valery P. Kouplitchenko, Alexander V. Galitsky, Geoffrey G. Baehr