Patents by Inventor Kanon Liu

Kanon Liu 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).

  • Read out integrated circuit
    Patent number: 8686766
    Abstract: According to one embodiment, a circuit comprises a Capacitive Trans-Impedance Amplifier (CTIA) configured to receive a current pulse at an input and convert the current pulse to a voltage step. The voltage step is directed to a first signal path and a second signal path. When the voltage step exceeds a first threshold, the first signal path directs an enable pulse to the second signal path. The second signal path generates an output pulse when the voltage step exceeds a second threshold and the enable pulse is enabled. The second signal path comprises a first, a second, and a third amplifier to increase detection of the voltage step by the second signal path.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: April 1, 2014
    Assignee: Raytheon Company
    Inventors: Kanon Liu, Bryan W. Kean, James F. Asbrock
  • Read out integrated circuit
    Patent number: 8373458
    Abstract: According to one embodiment, a circuit comprises a Capacitive Trans-Impedance Amplifier (CTIA) configured to receive a current pulse at an input and convert the current pulse to a voltage step. The voltage step is directed to a first signal path and a second signal path. When the voltage step exceeds a first threshold, the first signal path directs an enable pulse to the second signal path. The second signal path generates an output pulse when the voltage step exceeds a second threshold and the enable pulse is enabled. The second signal path comprises a first, a second, and a third amplifier to increase detection of the voltage step by the second signal path.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: February 12, 2013
    Assignee: Raytheon Company
    Inventors: Kanon Liu, Bryan W. Kean, James F. Asbrock
  • READ OUT INTEGRATED CIRCUIT
    Publication number: 20130009711
    Abstract: According to one embodiment, a circuit comprises a Capacitive Trans-Impedance Amplifier (CTIA) configured to receive a current pulse at an input and convert the current pulse to a voltage step. The voltage step is directed to a first signal path and a second signal path. When the voltage step exceeds a first threshold, the first signal path directs an enable pulse to the second signal path. The second signal path generates an output pulse when the voltage step exceeds a second threshold and the enable pulse is enabled. The second signal path comprises a first, a second, and a third amplifier to increase detection of the voltage step by the second signal path.
    Type: Application
    Filed: November 17, 2009
    Publication date: January 10, 2013
    Applicant: Raytheon Company
    Inventors: Kanon Liu, Bryan W. Kean, James F. Asbrock
  • Low noise, low power and high bandwidth capacitive feedback trans-impedance amplifier with differential FET input and bipolar emitter follower feedback
    Patent number: 7626460
    Abstract: A differential amplifier topology includes circuitry to create a higher bandwidth output using less current than an existing Capacitive Trans-Impedance Amplifier (CTIA) using an all Field Effect Transistor (FET) circuit design. A bipolar npn emitter follower in the circuit topology provides low output impedance and some degree of output inductive peaking, and the CTIA differential output is buffered by the bipolar npn emitter follower in the CTIA feedback loop such as the open-loop high voltage gain is maintained without being affected by output loads.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: December 1, 2009
    Assignee: Raytheon Company
    Inventors: Kanon Liu, James F. Asbrock
  • Low noise, low power and high bandwidth capacitive feedback trans-impedance amplifier with differential fet input and bipolar emitter follower feedback
    Publication number: 20090108942
    Abstract: A differential amplifier topology includes circuitry to create a higher bandwidth output using less current than an existing Capacitive Trans-Impedance Amplifier (CTIA) using an all Field Effect Transistor (FET) circuit design. A bipolar npn emitter follower in the circuit topology provides low output impedance and some degree of output inductive peaking, and the CTIA differential output is buffered by the bipolar npn emitter follower in the CTIA feedback loop such as the open-loop high voltage gain is maintained without being affected by output loads.
    Type: Application
    Filed: October 30, 2007
    Publication date: April 30, 2009
    Inventors: Kanon Liu, James F. Asbrock