Patents by Inventor Kwai-Kwong Lam

Kwai-Kwong Lam 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).

  • Publication number: 20230075302
    Abstract: A method of installing an antenna array module on a window includes adhering the antenna array module to the window and connecting the antenna array module to an external module via a cable. The cable may extend from one side of the window to the other. The antenna array module may include a substrate (e.g., a transparent substrate) and a plurality of antenna elements (e.g., meshed patches) on one or more layers of the substrate. Beamformer(s) and splitter/combiner(s) operably connected to the plurality of antenna elements may be embodied in the external module or in the antenna array module (e.g., in whole or in part in one or more integrated circuits on a surface of the substrate). The external module may output digital data derived from mm-wave, intermediate frequency (IF) and/or baseband signal(s) received from the antenna array module.
    Type: Application
    Filed: September 7, 2022
    Publication date: March 9, 2023
    Inventors: Meysam Moallem, Manuchehr Neshat, Kwai Kwong Lam
  • Publication number: 20070080839
    Abstract: A two-bit offset canceling A/D converter with improved common mode rejection and threshold sensitivity for use in GPS receivers. A device in accordance with the present invention comprises a level shifter, the level shifter receiving a positive signal and a negative signal, the level shifter shifting the positive signal and the negative signal such that a difference between the positive signal and the negative signal is larger than a threshold value, and a comparator, coupled to the level shifter, the comparator providing as outputs of the comparators a sign bit and two magnitude bits wherein the comparator comprises a plurality of switched capacitor amplifiers.
    Type: Application
    Filed: December 15, 2006
    Publication date: April 12, 2007
    Inventors: Rabih Makarem, Kwai-Kwong Lam
  • Publication number: 20060114014
    Abstract: A GPS receiver with automatic mode-setting and power ramping circuitry is disclosed.
    Type: Application
    Filed: November 10, 2005
    Publication date: June 1, 2006
    Inventors: Kwai-Kwong Lam, Christopher Leon, Rabih Makarem
  • Publication number: 20060103565
    Abstract: A two-bit offset canceling A/D converter with improved common mode rejection and threshold sensitivity for use in GPS receivers. A device in accordance with the present invention comprises a level shifter, the level shifter receiving a positive signal and a negative signal, the level shifter shifting the positive signal and the negative signal such that a difference between the positive signal and the negative signal is larger than a threshold value, and a comparator, coupled to the level shifter, the comparator providing as outputs of the comparators a sign bit and two magnitude bits wherein the comparator comprises a plurality of switched capacitor amplifiers.
    Type: Application
    Filed: November 10, 2005
    Publication date: May 18, 2006
    Inventors: Rabih Makarem, Kwai-Kwong Lam
  • Publication number: 20060103465
    Abstract: A tuned low-noise amplifier is disclosed. A device in accordance with the present invention comprises a first current source, a second current source, a comparator, coupled to the first current source and the second current source, for providing a control signal, and a third current source, receiving the control signal and coupled to the tuned low-noise amplifier, wherein a current in the third current source is proportional to a current in the first current source and the second current source, where values of the first current source, the second current source, and the third current source are based on a quasi-Proportional-To-Absolute-Temperature (PTAT) curve.
    Type: Application
    Filed: November 14, 2005
    Publication date: May 18, 2006
    Inventors: Lloyd Jiang, Rabih Makarem, Kwai-Kwong Lam, Christopher Leon
  • Patent number: 5212459
    Abstract: The present invention provides a linearized and delay compensated all CMOS voltage controlled oscillator. A transconductance converter receives a control voltage input and provides a control current to a current controlled ramping circuit that is responsible for providing two ramping voltage outputs to the positive inputs of two comparators. These comparators compare the ramping voltages to a threshold voltage and provide pulses to a latch when the ramping voltages cross the threshold voltage. The latch provides the oscillating output of the circuit which is fed back to the current controlled ramping circuit for switching purposes. A compensation loop receives both the oscillating output of the latch and the control current as inputs and provides the threshold voltage to the comparators. The compensation loop contains a similar current controlled ramping circuit which provides ramping outputs identical to those of the first current controlled ramping circuit.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: May 18, 1993
    Assignee: Silicon Systems, Inc.
    Inventors: Shunsaku Ueda, Kwai-Kwong Lam, Craig Robertson
  • Patent number: 5155452
    Abstract: The present invention provides a linearized and delay compensated all CMOS voltage controlled oscillator. A transconductance converter receives a control voltage input and provides a control current to a current controlled ramping circuit that is responsible for providing two ramping voltage outputs to the positive inputs of two comparators. These comparators compare the ramping voltages to a threshold voltage and provide pulses to a latch when the ramping voltages cross the threshold voltage. The latch provides the oscillating output of the circuit which is fed back to the current controlled ramping circuit for switching purposes. A compensation loop receives both the oscillating output of the latch and the control current as inputs and provides the threshold voltage to the comparators. The compensation loop contains a similar current controlled ramping circuit which provides ramping outputs identical to those of the first current controlled ramping circuit.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: October 13, 1992
    Assignee: Silicon Systems, Inc.
    Inventors: Shunsaku Ueda, Kwai-Kwong Lam, Craig Robertson