Patents by Inventor Raja Pullela

Raja Pullela 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: 20170041090
    Abstract: A direct broadcast satellite (DBS) reception assembly may comprise an integrated circuit that is configurable between or among a plurality of configurations based on content requested by client devices served by the DBS reception assembly. In a first configuration, multiple satellite frequency bands may be digitized by the integrated circuit as a single wideband signal. In a second configuration, the satellite frequency bands may be digitized by the integrated circuit as a plurality of separate narrowband signals. The integrated circuit may comprise a plurality of receive paths, each of the receive chains comprising a respective one of a plurality of low noise amplifiers and a plurality of analog-to-digital converters.
    Type: Application
    Filed: October 19, 2016
    Publication date: February 9, 2017
    Inventors: Glenn Chang, Raja Pullela, Madhukar Reddy, Timothy Gallagher, Shanta Murthy Prem Swaroop, Curtis Ling, Vamsi Paidi, Wenjian Chen
  • Publication number: 20170012665
    Abstract: A microwave backhaul system may comprise a monolithic integrated circuit comprising an on-chip transceiver, digital baseband processing circuitry, and auxiliary interface circuitry. The on-chip transceiver may process a microwave signal from an antenna element to generate a first pair of quadrature baseband signals and convey the first pair of phase-quadrature baseband signals to the digital baseband processing circuitry. The auxiliary interface circuitry may receive one or more auxiliary signals from a source that is external to the monolithic integrated circuit and convey the one or more auxiliary signals to the digital baseband processing circuitry. The digital baseband processing circuitry may be operable to process signals to generate one or more second pairs of phase-quadrature digital baseband signals.
    Type: Application
    Filed: September 20, 2016
    Publication date: January 12, 2017
    Inventors: Kishore Seendripu, Raja Pullela, Madhukar Reddy, Timothy Gallagher
  • Publication number: 20160365869
    Abstract: Aspects of a method and system for a successive approximation analog-to-digital converter with dynamic search algorithms are provided. In some embodiments, a successive approximation analog-to-digital converter includes a digital-to-analog converter, a comparator, and a search and decode logice modules which cooperate to generate a digital output code representative of the analog input voltage based on a dynamic search algorithm. The dynamic search algorithms may alter a sequence of reference voltages used to successively approximate the analog input voltage based on one or more characteristics of the analog input voltage.
    Type: Application
    Filed: August 16, 2016
    Publication date: December 15, 2016
    Inventors: Raja Pullela, Curtis Ling
  • Patent number: 9509422
    Abstract: A direct broadcast satellite (DBS) reception assembly may comprise an integrated circuit that is configurable between or among a plurality of configurations based on content requested by client devices served by the DBS reception assembly. In a first configuration, multiple satellite frequency bands may be digitized by the integrated circuit as a single wideband signal. In a second configuration, the satellite frequency bands may be digitized by the integrated circuit as a plurality of separate narrowband signals. The integrated circuit may comprise a plurality of receive paths, each of the receive chains comprising a respective one of a plurality of low noise amplifiers and a plurality of analog-to-digital converters.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: November 29, 2016
    Assignee: MAXLINEAR, INC.
    Inventors: Glenn Chang, Raja Pullela, Madhukar Reddy, Timothy Gallagher, Shanta Murthy Prem Swaroop, Curtis Ling, Vamsi Paidi, Wenjian Chen
  • Patent number: 9484975
    Abstract: A microwave backhaul system may comprise a monolithic integrated circuit comprising an on-chip transceiver, digital baseband processing circuitry, and auxiliary interface circuitry. The on-chip transceiver may process a microwave signal from an antenna element to generate a first pair of quadrature baseband signals and convey the first pair of phase-quadrature baseband signals to the digital baseband processing circuitry. The auxiliary interface circuitry may receive one or more auxiliary signals from a source that is external to the monolithic integrated circuit and convey the one or more auxiliary signals to the digital baseband processing circuitry. The digital baseband processing circuitry may be operable to process signals to generate one or more second pairs of phase-quadrature digital baseband signals.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: November 1, 2016
    Assignee: MAXLINEAR, INC.
    Inventors: Kishore Seendripu, Raja Pullela, Madhukar Reddy, Timothy Gallagher
  • Patent number: 9444485
    Abstract: Aspects of a method and system for a successive approximation analog-to-digital converter with dynamic search algorithms are provided. In some embodiments, a successive approximation analog-to-digital converter includes a digital-to-analog converter, a comparator, and a search and decode logic modules which cooperate to generate a digital output code representative of the analog input voltage based on a dynamic search algorithm. The dynamic search algorithms may alter a sequence of reference voltages used to successively approximate the analog input voltage based on one or more characteristics of the analog input voltage.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: September 13, 2016
    Assignee: MAXLINEAR, INC.
    Inventors: Raja Pullela, Curtis Ling
  • Publication number: 20160226460
    Abstract: Methods and systems for a configurable low-noise amplifier with programmable band-selection filters may comprise a receiver with a low-noise amplifier (LNA) with differential output terminals; a low pass filter operably coupled to the LNA; a high pass filter operably coupled to the second input terminal of the LNA; and a signal source input coupled to the low pass filter and the high pass filter. The LNA may be operable to receive signals in a pass band of the high pass filter and a pass band of the low pass filter. The receiver may be operable to amplify input signals in the pass band of a first filter but not signals in the pass band of the second filter by operably coupling the second to ground.
    Type: Application
    Filed: April 8, 2016
    Publication date: August 4, 2016
    Inventors: Raja Pullela, Wenjian Chen, Vamsi Paidi
  • Publication number: 20160204883
    Abstract: Method and systems are provided for controlling adjustments of reception functions. Communication links may be setup between a transmitter and a receiver along with sideband control channels. Conditions and/or parameters, affecting estimated performance of reception, via the communication links, at the receiver, may then be monitored at the transmit-side, and information relating to the monitored conditions may then be communicated, via the sideband control channels, to enable adjusting reception related functions at the receiver.
    Type: Application
    Filed: March 22, 2016
    Publication date: July 14, 2016
    Inventors: Raja Pullela, Curtis Ling
  • Publication number: 20160128136
    Abstract: A system comprises a microwave backhaul outdoor unit having a first resonant circuit, phase error determination circuitry, and phase error compensation circuitry. The first resonant circuit is operable to generate a first signal characterized by a first amount of phase noise and a first amount of temperature stability. The phase error determination circuitry is operable to generate a phase error signal indicative of phase error between the first signal and a second signal, wherein the second signal is characterized by a second amount of phase noise that is greater than the first amount of phase noise, and the second signal is characterized by a second amount of temperature instability that is less than the first amount of temperature instability. The phase error compensation circuitry is operable to adjust the phase of a data signal based on the phase error signal, the adjustment resulting in a phase compensated signal.
    Type: Application
    Filed: November 2, 2015
    Publication date: May 5, 2016
    Inventors: Anand Anandakumar, Sheng Ye, Stephane Laurent-Michel, Glenn Chang, Raja Pullela, Vamsi Paidi
  • Publication number: 20160127119
    Abstract: A system comprises a microwave backhaul outdoor unit having a first resonant circuit, phase error determination circuitry, and phase error compensation circuitry. The first resonant circuit is operable to generate a first signal characterized by a first amount of phase noise and a first amount of temperature stability. The phase error determination circuitry is operable to generate a phase error signal indicative of phase error between the first signal and a second signal, wherein the second signal is characterized by a second amount of phase noise that is greater than the first amount of phase noise, and the second signal is characterized by a second amount of temperature instability that is less than the first amount of temperature instability. The phase error compensation circuitry is operable to adjust the phase of a data signal based on the phase error signal, the adjustment resulting in a phase compensated signal.
    Type: Application
    Filed: December 21, 2015
    Publication date: May 5, 2016
    Inventors: Subramanian Anantharaman Chandrasekarapuram, Anand Anandakumar, Stephane Laurent-Michel, Sheng Ye, Raja Pullela, Glenn Chang, Vamsi Paidi
  • Patent number: 9312821
    Abstract: Methods and systems for a configurable low-noise amplifier with programmable band-selection filters may comprise a low-noise amplifier (LNA) with a low pass filter coupled to a first input of the LNA and a high pass filter coupled to a second input of the LNA. The low pass filter and the high pass filter may also be coupled to a signal source input. Signals may be received in a pass band of the high pass filter and a pass band of the low pass filter. Input signals in the pass band of the one filter (but not signals in the pass band of the other filter) may be amplified by coupling the one input of the LNA to ground and coupling the other filter to ground utilizing a shunt resistor. The filters may be configurable and may each comprise at least one inductor and at least one capacitor.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: April 12, 2016
    Assignee: Maxlinear, Inc.
    Inventors: Raja Pullela, Wenjian Chen, Vamsi Paidi
  • Publication number: 20160094266
    Abstract: A microwave backhaul system may comprise a monolithic integrated circuit comprising an on-chip transceiver, digital baseband processing circuitry, and auxiliary interface circuitry. The on-chip transceiver may process a microwave signal from an antenna element to generate a first pair of quadrature baseband signals and convey the first pair of phase-quadrature baseband signals to the digital baseband processing circuitry. The auxiliary interface circuitry may receive one or more auxiliary signals from a source that is external to the monolithic integrated circuit and convey the one or more auxiliary signals to the digital baseband processing circuitry. The digital baseband processing circuitry may be operable to process signals to generate one or more second pairs of phase-quadrature digital baseband signals.
    Type: Application
    Filed: December 8, 2015
    Publication date: March 31, 2016
    Inventors: Kishore Seendripu, Raja Pullela, Madhukar Reddy, Timothy Gallagher
  • Patent number: 9294117
    Abstract: A system for processing signals may be configured to apply digital conversion to analog signals, and to apply, prior to the analog-to-digital conversion, a gain to at least a portion of the analog signals. The gain may be controlled and/or adjusted based on processing of digital output generated based on the analog-to-digital conversion. The system may comprise a plurality of sampling slices, which may be configured to provide the analog-to-digital conversion in interleaved (e.g., time-interleaved) manner. Each of the sampling slices may comprise a dedicated gain element, for applying gain to signals handled by the corresponding slice. The gain applied by the gain elements of the sampling slices may be controlled, independently, collectively, and/or in based on grouping into subsets. The gain may be controlled based on application of a particular gain control algorithm, which may be selected from a plurality of predefined algorithms.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: March 22, 2016
    Assignee: MAXLINEAR, INC.
    Inventors: Raja Pullela, Curtis Ling
  • Publication number: 20160080098
    Abstract: A direct broadcast satellite (DBS) reception assembly may comprise an integrated circuit that is configurable between or among a plurality of configurations based on content requested by client devices served by the DBS reception assembly. In a first configuration, multiple satellite frequency bands may be digitized by the integrated circuit as a single wideband signal. In a second configuration, the satellite frequency bands may be digitized by the integrated circuit as a plurality of separate narrowband signals. The integrated circuit may comprise a plurality of receive paths, each of the receive chains comprising a respective one of a plurality of low noise amplifiers and a plurality of analog-to-digital converters.
    Type: Application
    Filed: November 23, 2015
    Publication date: March 17, 2016
    Inventors: Glenn Chang, Raja Pullela, Madhukar Reddy, Timothy Gallagher, Shanta Murthy Prem Swaroop, Curtis Ling, Vamsi Paidi, Wenjian Chen
  • Patent number: 9246719
    Abstract: A circuit for down-converting an RF signal to a baseband signal includes a trans-admittance amplifier adapted to receive the RF signal and generate in response a pair of differential current signals. The circuit further includes a trans-impedance amplifier having at least four mixers and at least four linear amplifiers. The four mixers frequency down-convert the pair of differential current signals to generate four pairs of differential baseband current signals, wherein each pair of the differential baseband current signals has a different phase and is associated with each of the linear amplifiers. Additionally, the circuit includes a summing block that generates an in-phase signal using a first weighted sum of the four different baseband current signals and a quadrature signal using a second weighted sum of the four different baseband current signals. The circuit further includes an analog-to-digital converter for converting the in-phase and quadrature signals to respective digital representations.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: January 26, 2016
    Assignee: MaxLiner, Inc.
    Inventors: Raja Pullela, Yu Su, Wenjian Chen
  • Publication number: 20150365100
    Abstract: Aspects of a method and system for a successive approximation analog-to-digital converter with dynamic search algorithms are provided. In some embodiments, a successive approximation analog-to-digital converter includes a digital-to-analog converter, a comparator, and a search and decode logic modules which cooperate to generate a digital output code representative of the analog input voltage based on a dynamic search algorithm. The dynamic search algorithms may alter a sequence of reference voltages used to successively approximate the analog input voltage based on one or more characteristics of the analog input voltage.
    Type: Application
    Filed: July 28, 2015
    Publication date: December 17, 2015
    Inventors: Raja Pullela, Curtis Ling
  • Patent number: 9209852
    Abstract: A microwave backhaul system may comprise a monolithic integrated circuit comprising an on-chip transceiver, digital baseband processing circuitry, and auxiliary interface circuitry. The on-chip transceiver may process a microwave signal from an antenna element to generate a first pair of quadrature baseband signals and convey the first pair of phase-quadrature baseband signals to the digital baseband processing circuitry. The auxiliary interface circuitry may receive one or more auxiliary signals from a source that is external to the monolithic integrated circuit and convey the one or more auxiliary signals to the digital baseband processing circuitry. The digital baseband processing circuitry may be operable to process signals to generate one or more second pairs of phase-quadrature digital baseband signals.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: December 8, 2015
    Assignee: MaxLinear, Inc.
    Inventors: Kishore Seendripu, Raja Pullela, Madhukar Reddy, Tim Gallagher
  • Patent number: 9203535
    Abstract: A direct broadcast satellite (DBS) reception assembly may comprise an integrated circuit that is configurable between or among a plurality of configurations based on content requested by client devices served by the DBS reception assembly. In a first configuration, multiple satellite frequency bands may be digitized by the integrated circuit as a single wideband signal. In a second configuration, the satellite frequency bands may be digitized by the integrated circuit as a plurality of separate narrowband signals. The integrated circuit may comprise a plurality of receive paths, each of the receive chains comprising a respective one of a plurality of low noise amplifiers and a plurality of analog-to-digital converters.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: December 1, 2015
    Assignee: MaxLinear, Inc.
    Inventors: Glenn Chang, Raja Pullela, Madhukar Reddy, Timothy Gallagher, Shanta Murthy Prem Swaroop, Curtis Ling, Vamsi Paidi, Wenjian Chen
  • Patent number: 9160468
    Abstract: A signal receiver chip may be configured to handle a plurality of satellite signals. In this regard, for each received satellite signal the signal receiver chip may determine whether the received satellite signal is unprocessed or partially-processed off-chip; and when the received satellite signal is partially-processed off-chip, at least a portion of processing functions performed in the signal receiver chip may be bypassed. The received satellite signals may then be processed, to generate a corresponding output signals that is configured for communication over a local link. The processing functions bypassed in the signal receiver chip may comprise signal band conversion, particularly down converting from a first band used for over-the-air communication to a second band that is used during handling at receiver side. In this regard, the first band comprises K-band, Ku-band, or Ka-band, whereas the second band comprises L-band, half-L-band, or Extended-L-band.
    Type: Grant
    Filed: June 15, 2013
    Date of Patent: October 13, 2015
    Assignee: MAXLINEAR, INC.
    Inventors: Raja Pullela, Glenn Chang, Curtis Ling
  • Publication number: 20150256248
    Abstract: Methods and systems are provided for guard band detection and/or frequency offset detection. For example, a signal processing circuit may be operable to determine, for each of a plurality of downconverted signals, one or more frequency offsets that are associated with one or more corresponding local oscillators (LOs) used in obtaining the plurality of downconverted signals; and relating to the determined frequency offsets may be generated for the plurality of downconverted signals. The signal processing circuit may perform, based on the generated information, one or both of a band stacking operation and a channel stacking operation so as to prevent channels/bands being stacked on each other or being overlapped.
    Type: Application
    Filed: May 13, 2015
    Publication date: September 10, 2015
    Inventors: Raja Pullela, Glenn Chang, Sridhar Ramesh