Patents by Inventor Balasubramanian Ramachandran

Balasubramanian Ramachandran 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: 20240313812
    Abstract: This disclosure provides systems, methods, and devices for wireless communications that support dodging out-of-band (OOB) jammers. In a first aspect, a apparatus for wireless communications, such as a wireless transceiver, includes a first radio frequency (RF) processing path for processing a first RF signal, the first RF processing path comprising a first analog-digital converter (ADC) configured to sample the first RF signal based on a first clock signal; and a second RF processing path for processing a second RF signal, the second RF signal being a spatially-diverse representation of the first RF signal, and the second RF processing path comprising a second analog-digital converter (ADC) configured to sample the second RF signal based on a second clock signal, wherein a first clock frequency of the first clock signal is different from a second clock frequency of the second clock signal. Other aspects and features are also claimed and described.
    Type: Application
    Filed: March 14, 2023
    Publication date: September 19, 2024
    Inventors: Pranavsesh Vs, Balasubramanian Ramachandran, Abhishek Ananthrao Kulkarni
  • Publication number: 20240284346
    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for geography-based transmit power backoff. A method that may be performed by a user equipment (UE) includes identifying a region in which the UE is located and selecting a first maximum power reduction value associated with the region. The method further includes determining a transmit power for a signal based at least in part on the selected first maximum power reduction value and transmitting the signal at the transmit power.
    Type: Application
    Filed: August 12, 2021
    Publication date: August 22, 2024
    Inventors: Jiazhi LIANG, Balasubramanian RAMACHANDRAN, Shuyang YIN, Tangtang WU
  • Patent number: 12003267
    Abstract: Certain aspects of the present disclosure generally relate to techniques and apparatus for operating a wireless receiver of the apparatus in a high linearity mode. An example method includes operating the apparatus in a first mode with transmission of a plurality of transmit signals. The method also includes attenuating a received signal via an attenuator while operating the apparatus in the first mode. The method further includes amplifying the attenuated signal with an amplifier while operating the apparatus in the first mode. For certain aspects, the method further involves operating the apparatus in a second mode, bypassing the attenuator while operating the apparatus in the second mode, and amplifying the received signal with the amplifier while operating the apparatus in the second mode.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: June 4, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Ahmed Abbas Mohamed Helmy, Francesco Gatta, Balasubramanian Ramachandran, Abhishek Ananthrao Kulkarni, Prakash Thoppay Egambaram, Hasnain Lakdawala, Aleksandar Miodrag Tasic, Jang Joon Lee, Kyle David Holland
  • Publication number: 20240112945
    Abstract: In one embodiment, a susceptor for thermal processing is provided. The susceptor includes an outer rim surrounding and coupled to an inner dish, the outer rim having an inner edge and an outer edge. The susceptor further includes one or more structures for reducing a contacting surface area between a substrate and the susceptor when the substrate is supported by the susceptor. At least one of the one or more structures is coupled to the inner dish proximate the inner edge of the outer rim.
    Type: Application
    Filed: December 14, 2023
    Publication date: April 4, 2024
    Inventors: Anhthu NGO, Zuoming ZHU, Balasubramanian RAMACHANDRAN, Paul BRILLHART, Edric TONG, Anzhong CHANG, Kin Pong LO, Kartik SHAH, Schubert S. CHU, Zhepeng CONG, James Francis MACK, Nyi O. MYO, Kevin Joseph BAUTISTA, Xuebin LI, Yi-Chiau HUANG, Zhiyuan YE
  • Patent number: 11916587
    Abstract: Techniques and apparatus are described for reducing power consumption when performing wireless communications by dynamically changing the frequency of a local oscillator signal for a radio frequency (RF) downconversion circuit, based on signal conditions. An example method includes receiving an RF signal and downconverting the RF signal using an oscillating signal with a first frequency at a first time. The method also includes switching to downconverting the RF signal using the oscillating signal with a second frequency, based on a property associated with the RF signal at a second time. The second frequency is a subharmonic of the first frequency.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: February 27, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Hasnain Lakdawala, Ahmed Abbas Mohamed Helmy, Francesco Gatta, Balasubramanian Ramachandran, Ketan Humnabadkar, Andrea Fenaroli
  • Publication number: 20240048162
    Abstract: A system for wireless communications includes a first radio frequency front-end (RFFE) circuit coupled to a first antenna and a second RFFE coupled to a second antenna. The first RFFE circuit includes a first filter having a first passband spanning a first frequency band, a first low-noise amplifier (LNA) coupled to the first filter, and a bypass circuit configured to bypass the first filter, the bypass circuit including an attenuator. The first RFFE also includes a first switching circuit configured to couple the first antenna to the first filter or the bypass circuit. The second RFFE circuit includes a power amplifier, and a second filter coupled between the power amplifier and the second antenna, the second filter having a second passband spanning a second frequency band different than the first frequency band.
    Type: Application
    Filed: August 1, 2023
    Publication date: February 8, 2024
    Inventors: Francesco GATTA, Balasubramanian RAMACHANDRAN, Abhishek Ananthrao KULKARNI, Soon-Seng LAU
  • Patent number: 11848226
    Abstract: In one embodiment, a susceptor for thermal processing is provided. The susceptor includes an outer rim surrounding and coupled to an inner dish, the outer rim having an inner edge and an outer edge. The susceptor further includes one or more structures for reducing a contacting surface area between a substrate and the susceptor when the substrate is supported by the susceptor. At least one of the one or more structures is coupled to the inner dish proximate the inner edge of the outer rim.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: December 19, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Anhthu Ngo, Zuoming Zhu, Balasubramanian Ramachandran, Paul Brillhart, Edric Tong, Anzhong Chang, Kin Pong Lo, Kartik Shah, Schubert S. Chu, Zhepeng Cong, James Francis Mack, Nyi O. Myo, Kevin Joseph Bautista, Xuebin Li, Yi-Chiau Huang, Zhiyuan Ye
  • Publication number: 20230095161
    Abstract: Techniques and apparatus are described for reducing power consumption when performing wireless communications by dynamically changing the frequency of a local oscillator signal for a radio frequency (RF) downconversion circuit, based on signal conditions. An example method includes receiving an RF signal and downconverting the RF signal using an oscillating signal with a first frequency at a first time. The method also includes switching to downconverting the RF signal using the oscillating signal with a second frequency, based on a property associated with the RF signal at a second time. The second frequency is a subharmonic of the first frequency.
    Type: Application
    Filed: September 24, 2021
    Publication date: March 30, 2023
    Inventors: Hasnain LAKDAWALA, Ahmed ABBAS MOHAMED HELMY, Francesco GATTA, Balasubramanian RAMACHANDRAN, Ketan HUMNABADKAR, Andrea FENAROLI
  • Publication number: 20230097399
    Abstract: Certain aspects of the present disclosure generally relate to techniques and apparatus for operating a wireless receiver of the apparatus in a high linearity mode. An example method includes operating the apparatus in a first mode with transmission of a plurality of transmit signals. The method also includes attenuating a received signal via an attenuator while operating the apparatus in the first mode. The method further includes amplifying the attenuated signal with an amplifier while operating the apparatus in the first mode. For certain aspects, the method further involves operating the apparatus in a second mode, bypassing the attenuator while operating the apparatus in the second mode, and amplifying the received signal with the amplifier while operating the apparatus in the second mode.
    Type: Application
    Filed: September 24, 2021
    Publication date: March 30, 2023
    Inventors: Ahmed ABBAS MOHAMED HELMY, Francesco GATTA, Balasubramanian RAMACHANDRAN, Abhishek Ananthrao KULKARNI, Prakash THOPPAY EGAMBARAM, Hasnain LAKDAWALA, Aleksandar Miodrag TASIC, Jang Joon LEE, Kyle David HOLLAND
  • Patent number: 11493378
    Abstract: A fuel level measurement system and method for liquified natural gas (LNG) powered machines is disclosed. An engine control module (ECM) receives fuel line pressure levels at a first time (e.g., a key-off event) and, again, at a second time (e.g., a key-on event). The ECM predicts an expected change in pressure from the key-off event to the key-on event based on various factors. If the change in pressure detected is greater than a threshold level different from the predicted change in pressure, the ECM determines a fill event and resets a current fuel level. The ECM tracks mass flow commands used to provide fuel to the engine to determine the consumption of fuel from the fuel tank and to determine a new current fuel level based on the amount of fuel consumed. The current fuel level is displayed on a fuel gauge.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: November 8, 2022
    Assignee: Caterpillar Inc.
    Inventors: Joshua Thomas Perko, Michael Joseph Campagna, Matthew Jordan Engfehr, Balasubramanian Ramachandran
  • Patent number: 11348072
    Abstract: The techniques described herein facilitate sharing electronic cloud-based calendars via online application and collaboration services, e.g., Microsoft Office 365®. In an implementation, a method of operating an online application and collaboration service for sharing electronic calendars between mailboxes is disclosed. The method includes receiving a request to share a master calendar owned by a first user of the online application and collaboration service with a second user. The master calendar is stored in the first user's mailbox. The method further includes communicating a response indicating acceptance of the request to share the master calendar, generating a copy of the master calendar in the second user's mailbox, and synching the copy of the master calendar with the master calendar using pre-cached data to populate an initial view.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: May 31, 2022
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Jaskaran Singh, Szymon Madejczyk, Aaron Eugene Stout, Balasubramanian Ramachandran, Carolyn Amy McKenna, Julia Foran Schearer
  • Publication number: 20220090953
    Abstract: A fuel level measurement system and method for liquified natural gas (LNG) powered machines is disclosed. An engine control module (ECM) receives fuel line pressure levels at a first time (e.g., a key-off event) and, again, at a second time (e.g., a key-on event). The ECM predicts an expected change in pressure from the key-off event to the key-on event based on various factors. If the change in pressure detected is greater than a threshold level different from the predicted change in pressure, the ECM determines a fill event and resets a current fuel level. The ECM tracks mass flow commands used to provide fuel to the engine to determine the consumption of fuel from the fuel tank and to determine a new current fuel level based on the amount of fuel consumed. The current fuel level is displayed on a fuel gauge.
    Type: Application
    Filed: September 22, 2020
    Publication date: March 24, 2022
    Applicant: Caterpillar Inc.
    Inventors: Joshua Thomas Perko, Michael Joseph Campagna, Matthew Jordan Engfehr, Balasubramanian Ramachandran
  • Publication number: 20210175115
    Abstract: In one embodiment, a susceptor for thermal processing is provided. The susceptor includes an outer rim surrounding and coupled to an inner dish, the outer rim having an inner edge and an outer edge. The susceptor further includes one or more structures for reducing a contacting surface area between a substrate and the susceptor when the substrate is supported by the susceptor. At least one of the one or more structures is coupled to the inner dish proximate the inner edge of the outer rim.
    Type: Application
    Filed: February 23, 2021
    Publication date: June 10, 2021
    Inventors: Anhthu NGO, Zuoming ZHU, Balasubramanian RAMACHANDRAN, Paul BRILLHART, Edric TONG, Anzhong CHANG, Kin Pong LO, Kartik SHAH, Schubert S. CHU, Zhepeng CONG, James Francis MACK, Nyi O. MYO, Kevin Joseph BAUTISTA, Xuebin LI, Yi-Chiau HUANG, Zhiyuan YE
  • Patent number: 10958502
    Abstract: Systems, apparatuses, and methods are described for auto-discovery of port-to-port connectivity through correlative analysis on performance metrics. Statistical data corresponding to each port of routers and transport devices may be collected. The collected data may be processed such that missing data may be patched and time frames may be aligned. Statistical analysis may be performed on the collected data. Such statistical analysis may comprise generating a waveform based on the data and determining, e.g., correlations in the data. If the analyzed data of one port matches analyzed data of another port, the two ports may be determined to be connected to one another. A match may be based on meeting various criteria and/or thresholds.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: March 23, 2021
    Assignee: Comcast Cable Communications, LLC
    Inventors: Balasubramanian Ramachandran, Eric Frishman, Mannan Venkatesan
  • Patent number: 10930543
    Abstract: In one embodiment, a susceptor for thermal processing is provided. The susceptor includes an outer rim surrounding and coupled to an inner dish, the outer rim having an inner edge and an outer edge. The susceptor further includes one or more structures for reducing a contacting surface area between a substrate and the susceptor when the substrate is supported by the susceptor. At least one of the one or more structures is coupled to the inner dish proximate the inner edge of the outer rim.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: February 23, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Anhthu Ngo, Zuoming Zhu, Balasubramanian Ramachandran, Paul Brillhart, Edric Tong, Anzhong Chang, Kin Pong Lo, Kartik Shah, Schubert S. Chu, Zhepeng Cong, James Francis Mack, Nyi O. Myo, Kevin Joseph Bautista, Xuebin Li, Yi-Chiau Huang, Zhiyuan Ye
  • Publication number: 20210050868
    Abstract: Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive a first signal associated with a first radio access technology (RAT) and receive a second signal associated with a second RAT. In some aspects, the UE may include one or more receiver chains associated with the first RAT and at least one receiver chain associated with the second RAT. The UE may couple, via one or more switches and based at least in part on respective energy levels associated with the first signal and the second signal satisfying one or more conditions, an output from a front end of the at least one receiver chain associated with the second RAT to the one or more receiver chains associated with the first RAT. Numerous other aspects are provided.
    Type: Application
    Filed: August 12, 2020
    Publication date: February 18, 2021
    Inventors: Haim Mendel WEISSMAN, Gideon Shlomo KUTZ, Alexander Vladimir SVERDLOV, Michael LEVITSKY, Balasubramanian RAMACHANDRAN, Sharon GRAIF
  • Patent number: 10922661
    Abstract: A calendar sharing invitation is received, and a receiver of the information is identified. The calendar sharing information is sent to the receiver, and the sharer's calendar data is synchronized to a computing system corresponding to the receiver. The sharer's calendar data is synchronized to a pre-accept memory, where it is hidden from the receiver until the receiver provides an input indicating that the receiver accepts the calendar sharing invitation. The sharer's calendar data is then exposed to the receiver for interaction by the receiver.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: February 16, 2021
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Szymon Madejczyk, Balasubramanian Ramachandran, Jaskaran Singh
  • Publication number: 20190215228
    Abstract: Systems, apparatuses, and methods are described for auto-discovery of port-to-port connectivity through correlative analysis on performance metrics. Statistical data corresponding to each port of routers and transport devices may be collected. The collected data may be processed such that missing data may be patched and time frames may be aligned. Statistical analysis may be performed on the collected data. Such statistical analysis may comprise generating a waveform based on the data and determining, e.g., correlations in the data. If the analyzed data of one port matches analyzed data of another port, the two ports may be determined to be connected to one another. A match may be based on meeting various criteria and/or thresholds.
    Type: Application
    Filed: January 11, 2019
    Publication date: July 11, 2019
    Inventors: Balasubramanian Ramachandran, Eric Frishman, Mannan Venkatesan
  • Patent number: 10306708
    Abstract: Embodiments of the disclosure generally relate to a reflector for use in a thermal processing chamber. In one embodiment, the thermal processing chamber generally includes an upper dome, a lower dome opposing the upper dome, the upper dome and the lower dome defining an internal volume of the processing chamber, a substrate support disposed within the internal volume, and a reflector positioned above and proximate to the upper dome, wherein the reflector has a heat absorptive coating layer deposited on a side of the reflector facing the substrate support.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: May 28, 2019
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Kin Pong Lo, Paul Brillhart, Balasubramanian Ramachandran, Satheesh Kuppurao, Daniel Redfield, Joseph M. Ranish, James Francis Mack, Kailash Kiran Patalay, Michael Olsen, Eddie Feigel, Richard Halpin, Brett Vetorino
  • Patent number: 10179354
    Abstract: Methods and apparatus for determining an endpoint of a process chamber cleaning process are provided. In some embodiments, a method of monitoring a process being performed in a process chamber includes: performing a cleaning process in a process chamber to remove material deposited on one or more internal surfaces of the process chamber resultant from processes performed within the process chamber; shining a light on a first internal surface being cleaned; detecting the light reflected off of the first internal surface; and terminating the cleaning process based upon the detected light.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: January 15, 2019
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Balasubramanian Ramachandran, Masato Ishii, Aaron Muir Hunter