Patents by Inventor Sheau-Chien Wang

Sheau-Chien Wang 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).

  • Gaussian frequency-shift keying transciever for ISM wideband communication
    Patent number: 6480553
    Abstract: A GFSK (Gaussian Frequency Shift Keying) radio transceiver is provided for ISM (Industrial Scientific and Medical) wideband communication. The GFSK radio transceiver includes a transmitter for modulating transmitted signal into RF signal, and a receiver for demodulating received signal into digital form. The transmitter includes a VCO for generating an oscillating signal serving as a carrier signal in the transmitter and a first local oscillating signal in the transmitter; and a variable-gain power amplifier, capable of being adjustable between two gain values, for amplifying the RF signal. The receiver includes a mixer for downconverting the received signal into a first IF signal by using the first local oscillating signal from the transmitter; and an IF demodulator for downconverting the first IF signal into a second IF signal by using a locally generated second local oscillating signal.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: November 12, 2002
    Assignee: Winbond Electronics Corp.
    Inventors: Hsiang-Te Ho, Hsing-Ya Chiang, Sheau-Chien Wang