Patents by Inventor Abhishek Kammula

Abhishek Kammula 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).

  • Patent number: 8611844
    Abstract: A low noise amplifier (LNA) for use in a receiver circuit includes an adjustable impedance network including an input for receiving a radio frequency signal, a plurality of control inputs, and an output. The LNA further includes a controller coupled to the plurality of control inputs and configured to control an impedance of the adjustable impedance network. The controller controls the adjustable impedance network to provide a relatively low impedance in a terrestrial mode and to provide a relatively high impedance in a cable mode.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: December 17, 2013
    Assignee: Silicon Laboratories Inc.
    Inventors: Yu Su, Mustafa H. Koroglu, Abhishek Kammula, Ramin Khoini-Poorfard
  • Patent number: 8385867
    Abstract: In one embodiment, a set of tracking filters to be coupled between an amplifier and a mixer is provided. The tracking filters may be differently configured depending on band of operation. For example, a first set of the filters can be configured to maintain a substantially constant Q value across their operating bandwidth while a second set of the filters can be configured to maintain a substantially constant bandwidth across their operating bandwidth.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: February 26, 2013
    Assignee: Silicon Laboratories Inc.
    Inventors: Aslamali A. Rafi, Chunyu Xin, Ruifeng Sun, Abhishek Kammula, Ramin Khoini-Poorfard, Alessandro Piovaccari, Peter J. Vancorenland
  • Publication number: 20120222082
    Abstract: A low noise amplifier (LNA) for use in a receiver circuit includes an adjustable impedance network including an input for receiving a radio frequency signal, a plurality of control inputs, and an output. The LNA further includes a controller coupled to the plurality of control inputs and configured to control an impedance of the adjustable impedance network. The controller controls the adjustable impedance network to provide a relatively low impedance in a terrestrial mode and to provide a relatively high impedance in a cable mode.
    Type: Application
    Filed: January 5, 2012
    Publication date: August 30, 2012
    Inventors: Yu Su, Mustafa H. Koroglu, Abhishek Kammula, Ramin Khoini-Poorfard
  • Publication number: 20100328546
    Abstract: In one embodiment, a set of tracking filters to be coupled between an amplifier and a mixer is provided. The tracking filters may be differently configured depending on band of operation. For example, a first set of the filters can be configured to maintain a substantially constant Q value across their operating bandwidth while a second set of the filters can be configured to maintain a substantially constant bandwidth across their operating bandwidth.
    Type: Application
    Filed: June 29, 2009
    Publication date: December 30, 2010
    Inventors: Aslamali A. Rafi, Chunyu Xin, Ruifeng Sun, Abhishek Kammula, Ramin Khoini-Poorfard, Alessandro Piovaccari, Peter J. Vancorenland
  • Publication number: 20070238423
    Abstract: A communications device is provided. The communications device includes a first antenna port coupled to a signal line, transmitter circuitry coupled to the signal line and configured to broadcast a radio frequency (RF) output signal across the first antenna port, tuning circuitry coupled to the signal line, and a controller configured to adjust a tuning of the tuning circuitry. The first antenna port, the transmitter circuitry, the tuning circuitry, and the controller are at least partially integrated on the same integrated circuit.
    Type: Application
    Filed: March 31, 2006
    Publication date: October 11, 2007
    Inventors: Dan Kasha, Aslamali Rafi, Abhishek Kammula, Peter Vancorenland, George Tuttle
  • Publication number: 20070232236
    Abstract: A radio frequency (RF) communications device is provided. The RF communications device includes transmitter circuitry configured to generate a calibration signal on a signal line coupled to an antenna port in a calibration mode of operation and an RF output signal for broadcast across the antenna port subsequent to the calibration mode of operation, tuning circuitry coupled to the signal line and configured to receive the calibration signal, and a controller configured to adjust a signal level of the calibration signal generated by the transmitter circuitry and a tuning of the tuning circuitry during the calibration mode of operation. The transmitter circuitry, the tuning circuitry, and the controller are at least partially integrated on the same integrated circuit.
    Type: Application
    Filed: March 31, 2006
    Publication date: October 4, 2007
    Inventors: Dan Kasha, Aslamali Rafi, Abhishek Kammula, Peter Vancorenland, George Tuttle
  • Publication number: 20070232248
    Abstract: A communications device is provided. The communications device includes first output stage circuitry configured to generate a first radio frequency (RF) output signal in response to receiving an RF input signal, a first antenna port configured to couple to a first antenna and configured receive the first RF output signal from the first output stage circuitry, second output stage circuitry configured to generate a second RF output signal in response to receiving the first RF output signal, and a second antenna port configured to couple to a second antenna and configured to receive the second RF output signal from the second output stage circuitry. The first output stage circuitry, the first antenna port, the second output stage circuitry, and the second antenna port are at least partially integrated on the same integrated circuit.
    Type: Application
    Filed: March 31, 2006
    Publication date: October 4, 2007
    Inventors: Dan Kasha, Aslamali Rafi, Abhishek Kammula, Peter Vancorenland, George Tuttle