Patents by Inventor Yohei Kaneyama

Yohei Kaneyama 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).

  • Pin Diode Driving Circuit and Threshold Value Determination Method
    Publication number: 20200313665
    Abstract: In a PIN diode drive circuit, a forward voltage is applied to a PIN diode through a first switching element and a reverse voltage is applied to the PIN diode through a second switching element. A limiting unit limits an increase rate of an absolute value of a reverse recovery current to a value smaller than a threshold value, the reverse recovery current flowing through the PIN diode when a voltage applied to the PIN diode changes from a forward voltage to a reverse voltage. The threshold value is less than 1 time and 0.5 times or more of a maximum value of the increase rate when a second peak appears regarding the reverse recovery current.
    Type: Application
    Filed: March 9, 2020
    Publication date: October 1, 2020
    Inventors: Tatsuya Morii, Yohei Kaneyama, Masayuki Nakahama
  • Pin diode driving circuit and threshold value determination method
    Patent number: 10778209
    Abstract: In a PIN diode drive circuit, a forward voltage is applied to a PIN diode through a first switching element and a reverse voltage is applied to the PIN diode through a second switching element. A limiting unit limits an increase rate of an absolute value of a reverse recovery current to a value smaller than a threshold value, the reverse recovery current flowing through the PIN diode when a voltage applied to the PIN diode changes from a forward voltage to a reverse voltage. The threshold value is less than 1 time and 0.5 times or more of a maximum value of the increase rate when a second peak appears regarding the reverse recovery current.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: September 15, 2020
    Assignee: DAIHEN Corporation
    Inventors: Tatsuya Morii, Yohei Kaneyama, Masayuki Nakahama