Patents by Inventor Ui-Sik Yoon

Ui-Sik Yoon 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).

  • Differential type voltage controlled oscillator
    Patent number: 6621363
    Abstract: A differential type VCO (Voltage Controllable Oscillator) is disclosed. The VCO has a differential amplifier having a couple of transistors and a couple of LC tanks. At each LC tank, a transformer is connected to form a buffer. An oscillating signal is output through the buffer with no power consumption. Additionally, a capacitor is connected to the secondary coil of the transformer to form a bandpass filter, thereby attenuating a harmonic signal included in the oscillating signal.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: September 16, 2003
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sun-Hee Park, Sung-Chul Hong, Yong-Gyo Seo, Ui-Sik Yoon, Sang-Min Nam, Sang-Yoon Jeon, Sang-Woong Yoon
  • Differential type voltage controlled oscillator
    Publication number: 20030095458
    Abstract: A differential type VCO (Voltage Controllable Oscillator) is disclosed. The VCO has a differential amplifier having a couple of transistors and a couple of LC tanks. At each LC tank, a transformer is connected to form a buffer. An oscillating signal is output through the buffer with no power consumption. Additionally, a capacitor is connected to the secondary coil of the transformer to form a bandpass filter, thereby attenuating a harmonic signal included in the oscillating signal.
    Type: Application
    Filed: March 18, 2002
    Publication date: May 22, 2003
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sun-Hee Park, Sung-Chul Hong, Yong-Gyo Seo, Ui-Sik Yoon, Sang-Min Nam, Sang-Yoon Jeon, Sang-Woong Yoon