Patents by Inventor Chiewcharn Narathong

Chiewcharn Narathong 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: 10250314
    Abstract: Certain aspects of the present disclosure provide multi-way diversity receivers with multiple synthesizers. Such a multi-way diversity receiver may be implemented in a carrier aggregation (CA) transceiver. One example wireless reception diversity circuit generally includes three or more receive paths for processing received signals and two or more frequency synthesizing circuits configured to generate local oscillating signals to downconvert the received signals. Each of the frequency synthesizing circuits is shared by at most two of the receive paths, and each pair of the frequency synthesizing circuits may generate a pair of local oscillating signals having the same frequency.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: April 2, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Lai Kan Leung, Chiewcharn Narathong, Rajagopalan Rangarajan, Dongling Pan, Yiwu Tang, Aleksandar Miodrag Tasic
  • Patent number: 10177722
    Abstract: A device includes a low-noise amplifier (LNA) and a matching circuit. The matching circuit is coupled to an output of the LNA and switchably coupled to at least one of a first and a second output of the device. The device may further include a power splitter switchably coupled between an output of the matching circuit and the first and/or the second output of the device.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: January 8, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Chuan Wang, Kevin Hsi Huai Wang, Chiewcharn Narathong, Mehmet Uzunkol, Prakash Thoppay Egambaram
  • Patent number: 10033343
    Abstract: A device includes a reconfigurable receiver front end having variable gain and variable bandwidth configured to tune to a plurality of communication channels in a communication band, the reconfigurable receiver front end responsive to a signal power level.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: July 24, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Miodrag Tasic, Chiewcharn Narathong, Gurkanwal Singh Sahota, Shrenik Patel
  • Publication number: 20180013600
    Abstract: An apparatus includes a low noise amplifier (LNA) multiplexer configured to receive a plurality of radio frequency (RF) signals at a plurality of input terminals and to combine the plurality of RF signals into a combined RF signal that is output at an output terminal. The LNA multiplexer includes a plurality of input signal paths, and each input signal path is coupleable to a respective input terminal of the plurality of input terminals and is configured to receive a respective RF signal of the plurality of RF signals. The apparatus further includes an LNA demultiplexer configured to receive the combined RF signal at an input port coupled to the output terminal and to distribute the combined RF signal to a plurality of output ports, each output port of the plurality of output ports configured to output the combined RF signal to a respective downconverter of a plurality of downconverters.
    Type: Application
    Filed: September 25, 2017
    Publication date: January 11, 2018
    Inventors: Aleksandar Miodrag Tasic, Chiewcharn Narathong, Christian Holenstein, Dongling Pan, Yiwu Tang, Rajagopalan Rangarajan, Lai Kan Leung
  • Publication number: 20170302358
    Abstract: Certain aspects of the present disclosure provide multi-way diversity receivers with multiple synthesizers. Such a multi-way diversity receiver may be implemented in a carrier aggregation (CA) transceiver. One example wireless reception diversity circuit generally includes three or more receive paths for processing received signals and two or more frequency synthesizing circuits configured to generate local oscillating signals to downconvert the received signals. Each of the frequency synthesizing circuits is shared by at most two of the receive paths, and each pair of the frequency synthesizing circuits may generate a pair of local oscillating signals having the same frequency.
    Type: Application
    Filed: June 29, 2017
    Publication date: October 19, 2017
    Inventors: Lai Kan LEUNG, Chiewcharn NARATHONG, Rajagopalan RANGARAJAN, Dongling PAN, Yiwu TANG, Aleksandar Miodrag TASIC
  • Patent number: 9774485
    Abstract: Multiplex modules for use in carrier aggregation receivers are disclosed. In an exemplary embodiment, an apparatus includes an LNA multiplexer configured to receive a plurality of RF signals at a plurality of input terminals and to combine the RF signals into a combined RF signal that is output from an output terminal. The apparatus also includes an LNA demultiplexer configured to receive the combined RF signal at an input port that is connected to the output terminal and to distribute the combined RF signal to a plurality of output ports.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: September 26, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Miodrag Tasic, Chiewcharn Narathong, Christian Holenstein, Dongling Pan, Yiwu Tang, Rajagopalan Rangarajan, Lai Kan Leung
  • Patent number: 9712226
    Abstract: Certain aspects of the present disclosure provide multi-way diversity receivers with multiple synthesizers. Such a multi-way diversity receiver may be implemented in a carrier aggregation (CA) transceiver. One example wireless reception diversity circuit generally includes three or more receive paths for processing received signals and two or more frequency synthesizing circuits configured to generate local oscillating signals to downconvert the received signals. Each of the frequency synthesizing circuits is shared by at most two of the receive paths, and each pair of the frequency synthesizing circuits may generate a pair of local oscillating signals having the same frequency.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: July 18, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Lai Kan Leung, Chiewcharn Narathong, Rajagopalan Rangarajan, Dongling Pan, Yiwu Tang, Aleksandar Miodrag Tasic
  • Publication number: 20170201218
    Abstract: A device includes a low-noise amplifier (LNA) and a matching circuit. The matching circuit is coupled to an output of the LNA and switchably coupled to at least one of a first and a second output of the device. The device may further include a power splitter switchably coupled between an output of the matching circuit and the first and/or the second output of the device.
    Type: Application
    Filed: June 9, 2016
    Publication date: July 13, 2017
    Inventors: Chuan WANG, Kevin Hsi Huai WANG, Chiewcharn NARATHONG, Mehmet UZUNKOL, Prakash THOPPAY EGAMBARAM
  • Publication number: 20170201408
    Abstract: Wireless receivers are configured to support carrier aggregation. A device may include at least one low-noise amplifier (LNA). The device may also include a first input path configured to convey a first signal to a first input of the at least one LNA(s), and a second input path configured to convey a second signal to a second input of the LNA(s). Further, the device may include a transformer configured to inductively couple the first input path to the second input path.
    Type: Application
    Filed: June 7, 2016
    Publication date: July 13, 2017
    Inventors: Yunfei FENG, Chuan WANG, Dongling PAN, Chiewcharn NARATHONG
  • Patent number: 9681447
    Abstract: Certain aspects of the present disclosure provide methods and apparatus for dynamically adjusting a voltage-controlled oscillator (VCO) frequency, a local oscillator (LO) divider ratio, and/or a receive path when adding or discontinuing reception of a component carrier (CC) in a carrier aggregation (CA) scheme. This dynamic adjustment is utilized to avoid (or at least reduce) VCO, LO, and transmit signal coupling issues with multiple component carriers, with minimal (or at least reduced) current consumption by the VCO and the LO divider.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: June 13, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Yiwu Tang, Rajagopalan Rangarajan, Chiewcharn Narathong, Lai Kan Leung, Aleksandar Miodrag Tasic, Dongling Pan
  • Patent number: 9654120
    Abstract: A method includes generating a first signal based on a difference between a first frequency of a first voltage controlled oscillator (VCO) and a second frequency of a second VCO. The method further includes determining a gain of the first VCO at least partially based on the first signal.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: May 16, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Yiwu Tang, Yunliang Zhu, Chiewcharn Narathong, Sujiang Rong
  • Patent number: 9615369
    Abstract: Methods and apparatus including: setting up a plurality of configurations for a plurality of local oscillator (LO) paths of a carrier aggregation (CA) transceiver operating with a plurality of bands; calculating and comparing frequencies for each LO path of the plurality of LO paths and at least one divider ratio of LO dividers for each band of the plurality of bands to identify frequency conflicts; and reconfiguring the LO dividers for the plurality of LO paths and the plurality of bands when the frequency conflicts are identified.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: April 4, 2017
    Assignee: QUALCOMM INCORPORATED
    Inventors: Rajagopalan Rangarajan, Chiewcharn Narathong, Lai Kan Leung, Dongling Pan, Aleksandar Miodrag Tasic, Yiwu Tang
  • Patent number: 9603187
    Abstract: Omni-band amplifiers support multiple band groups. In an exemplary design, an apparatus (e.g., a wireless device, an integrated circuit, etc.) includes at least one gain transistor and a plurality of cascode transistors for a plurality of band groups. Each band group covers a plurality of bands. The gain transistor(s) receive an input radio frequency (RF) signal. The cascode transistors are coupled to the gain transistor(s) and provide an output RF signal for one of the plurality of band groups. In an exemplary design, the gain transistor(s) include a plurality of gain transistors for the plurality of band groups. One gain transistor and one cascode transistor are enabled to amplify the input RF signal and provide the output RF signal for the selected band group. The gain transistors may be coupled to different taps of a single source degeneration inductor or to different source degeneration inductors.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: March 21, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Miodrag Tasic, Anosh Bomi Davierwalla, Chiewcharn Narathong, Klaas van Zalinge
  • Patent number: 9525503
    Abstract: Reconfiguring a transceiver design using a plurality of frequency synthesizers and a plurality of carrier aggregation (CA) receiver (Rx) and transmitter (Tx) chains, the method including: connecting a first frequency synthesizer to a first CA Tx chain; connecting the plurality of frequency synthesizers to the plurality of CA Rx chains, wherein a second frequency synthesizer of the plurality of frequency synthesizers is connected as a shared synthesizer to a first CA Rx chain and a second CA Tx chain.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: December 20, 2016
    Assignee: Qualcomm Incorporated
    Inventors: Chiewcharn Narathong, Lai Kan Leung, Dongling Pan, Rajagopalan Rangarajan, Kevin Hsi-huai Wang, Bhushan Shanti Asuri, Yiwu Tang
  • Patent number: 9515749
    Abstract: An amplifier module with an output coupler is disclosed. The amplifier module may include a plurality of input terminals and two or more output terminals. Each input terminal may be coupled to an input of an independent amplifier. Outputs from the independent amplifiers may be coupled to the two or more output terminals. The amplifier module may include an output coupler to couple the two or more output terminals together. A signal may be received by a first output terminal and be coupled by the output coupler to a second output terminal. In some embodiments, when the two or more output terminals are coupled together, the independent amplifiers may be made inactive or operated in a minimum gain configuration.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: December 6, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Lai Kan Leung, Kevin Hsi Huai Wang, Dongling Pan, Chiewcharn Narathong
  • Publication number: 20160329976
    Abstract: An amplifier module with an output coupler is disclosed. The amplifier module may include a plurality of input terminals and two or more output terminals. Each input terminal may be coupled to an input of an independent amplifier. Outputs from the independent amplifiers may be coupled to the two or more output terminals. The amplifier module may include an output coupler to couple the two or more output terminals together. A signal may be received by a first output terminal and be coupled by the output coupler to a second output terminal. In some embodiments, when the two or more output terminals are coupled together, the independent amplifiers may be made inactive or operated in a minimum gain configuration.
    Type: Application
    Filed: May 7, 2015
    Publication date: November 10, 2016
    Inventors: Lai Kan Leung, Kevin Hsi Huai Wang, Dongling Pan, Chiewcharn Narathong
  • Patent number: 9473336
    Abstract: A radio frequency (RF) front end having multiple low noise amplifiers modules is disclosed. In an exemplary embodiment, an apparatus includes at least one first stage amplifier configured to amplify received carrier signals to generate at least one first stage carrier group. Each first stage carrier group includes a respective portion of the carrier signals. The apparatus also includes second stage amplifiers configured to amplify the first stage carrier groups. Each second stage amplifier configured to amplify a respective first stage carrier group to generate two second stage output signals that may be output to different demodulation stages where each demodulation stage demodulates a selected carrier signal.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: October 18, 2016
    Assignee: Qualcomm Incorporated
    Inventors: Dongling Pan, Aleksandar Miodrag Tasic, Rajagopalan Rangarajan, Lai Kan Leung, Chiewcharn Narathong, Yiwu Tang
  • Patent number: 9379749
    Abstract: Aspects of a wireless apparatus for configuring a plurality of VCOs are provided. The apparatus may be a UE. The UE receives a configuration for a plurality of carriers. Each carrier corresponds to a different LO frequency. In addition, the UE determines a VCO frequency for generating each LO frequency. Further, the UE assigns each determined VCO frequency to each of a plurality of VCO modules based on a distance between the VCO modules and each of the determined VCO frequencies. The plurality of VCO modules are of a set of VCO modules including at least three VCO modules.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: June 28, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Lai Kan Leung, Chiewcharn Narathong, Rajagopalan Rangarajan, Dongling Pan, Yiwu Tang, Aleksandar Miodrag Tasic
  • Patent number: 9344270
    Abstract: Techniques for detecting and correcting phase discontinuity of a local oscillator (LO) signal are disclosed. In one design, a wireless device includes an LO generator and a phase detector. The LO generator generates an LO signal used for frequency conversion and is periodically powered on and off. The phase detector detects the phase of the LO signal when the LO generator is powered on. The detected phase of the LO signal is used to identify phase discontinuity of the LO signal. The wireless device may further include (i) a single-tone generator that generates a single-tone signal used to detect the phase of the LO signal, (ii) a downconverter that downconverts the single-tone signal with the LO signal and provides a downconverted signal used by the phase detector to detect the phase of LO signal, and (iii) phase corrector that corrects phase discontinuity of the LO signal in the analog domain or digital domain.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 17, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Li Liu, Praveen-Kumar Sampath, Lai Kan Leung, Chiewcharn Narathong, Soon-Seng Lau, Ketan Humnabadkar, Raghu Narayan Challa, Devavrata Vasant Godbole
  • Patent number: 9344100
    Abstract: A transceiver for multi-standard operation (usable, for example, to communicate signals both of a first wireless communication standard and of a second wireless communication standard) has a mixer that receives a local oscillator signal generated by a local oscillator. A PLL of the local oscillator involves a VCO, a digitally programmable analog loop filter, a digitally programmable VCO supply voltage circuit, and a digitally programmable VCO varactor bias control circuit. In one aspect, the bandwidth of the analog loop filter is adjusted depending on the communication standard of the signal being communicated. In other aspects, the VCO supply voltage circuit and/or the varactor bias control circuit are configured in different ways to optimize PLL performance depending on the communication standard of the signal being communicated.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: May 17, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Li Liu, Chiewcharn Narathong, Prasad Srinivasa Siva Gudem