Patents by Inventor Yen-Tso Chen

Yen-Tso Chen 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).

  • WIRELESS RADIO FREQUENCY SIGNAL TRANSCEIVING SYSTEM
    Publication number: 20100202499
    Abstract: A differential radio frequency signal transmitter is provided. The differential radio frequency signal transmitter includes an oscillator, a modulator and an amplifier module. The oscillator generates a pair of differential oscillation signals. The modulator generates a pair of differential modulated signals according to an input signal and the pair of differential oscillation signals. The input signal is a digital signal. When the input signal is at a first state, the modulator outputs the pair of differential oscillation signals as the pair of differential modulated signals, and when the input signal is at a second state, the modulator outputs a constant voltage signal as the pair of differential modulated signals. The amplifier module receives and amplifies the pair of differential modulated signals and generates a pair of differential radio frequency signals, accordingly.
    Type: Application
    Filed: October 1, 2009
    Publication date: August 12, 2010
    Applicant: NATIONAL TAIWAN UNIVERSITY
    Inventors: Jr-I Lee, Yen-Lin Huang, Yen-Tso Chen, Chia-Jung Chang