Patents by Inventor Kaushik Sengupta

Kaushik Sengupta 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: 12141686
    Abstract: An electronic neuron device that includes a thresholding unit which utilizes current-induced spin-orbit torque (SOT). A two-step switching scheme is implemented with the device. In the first step, a charge current through heavy metal (HM) places the magnetization of a nano-magnet along the hard-axis (i.e. an unstable point for the magnet). In the second step, the device receives a current (from an electronic synapse) which moves the magnetization from the unstable point to one of the two stable states. The polarity of the net synaptic current determines the final orientation of the magnetization. A resistive crossbar array may also be provided which functions as the synapse generating a bipolar current that is a weighted sum of the inputs of the device.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: November 12, 2024
    Assignee: Purdue Research Foundation
    Inventors: Abhronil Sengupta, Sri Harsha Choday, Yusung Kim, Kaushik Roy
  • Patent number: 11949390
    Abstract: A load modulated balanced amplifier (LMBA) circuit can include an input pad of the LMBA circuit configured to receive an input signal on a semiconductor die. A transformer-based hybrid splitter can be coupled to the input pad and configured to provide a first split input signal and a second split input signal from the input signal. A control power amplifier circuit coupled the first split input signal and a power amplifier circuit coupled to the second split input signal.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: April 2, 2024
    Assignee: The Trustees of Princeton University
    Inventors: Tushar Sharma, Chandrakanth Chappidi, Zheng Liu, Kaushik Sengupta
  • Publication number: 20230408395
    Abstract: According to various embodiments, a microfluidic bio-sensing system is disclosed. The system includes at least one semiconductor chip configured to control at least one of electrokinetic fluid flow, cell manipulation and sensing, and bio-molecular sensing by utilizing at least one plurality of electrodes in a microfluidic channel. The bio-sensing system is applicable to general bio-molecular and cell-based diagnostics in a battery-powered hand-held ultra-compact packaging without requiring any external instrumentations, allowing for the elimination of pneumatic pumps.
    Type: Application
    Filed: November 19, 2021
    Publication date: December 21, 2023
    Applicant: The Trustees of Princeton University
    Inventors: Chengjie ZHU, Jesus Manuel Maldonado VAZQUEZ, Hao TANG, Kaushik SENGUPTA
  • Publication number: 20230238713
    Abstract: An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.
    Type: Application
    Filed: November 14, 2022
    Publication date: July 27, 2023
    Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
  • Publication number: 20230169241
    Abstract: Various embodiments comprise systems, methods, mechanisms, apparatus, and improvements thereof providing a machine learning based inverse design method for mm-wave/RF power amplifiers (PAs). Methods according to embodiments provide for efficiently synthesizing power amplifier matching circuit (output matching/output power combiner/backoff efficient output power combiner, interstage matching and input matching/input power divider and phase shifter) for a close to optimum solution in terms of matching bandwidth, efficiency and load modulation, which can exceed the performance limitations of traditional matching network designs.
    Type: Application
    Filed: December 1, 2022
    Publication date: June 1, 2023
    Applicant: The Trustees of Princeton University
    Inventors: Zheng Liu, Emir All Karahan, Kaushik Sengupta
  • Patent number: 11616401
    Abstract: An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: March 28, 2023
    Assignee: California Institute of Technology
    Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
  • Patent number: 11616402
    Abstract: An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: March 28, 2023
    Assignee: California Institute of Technology
    Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
  • Patent number: 11502552
    Abstract: An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: November 15, 2022
    Assignee: California Institute of Technology
    Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
  • Publication number: 20220337240
    Abstract: Disclosed is an electromagnetic-circuit co-design approach for massively reconfigurable, multifunctional, and high-speed programmable metasurfaces with integrated chip tiling. The ability to manipulate the incident electromagnetic fields in a dynamically programmable manner and at high speeds using integrated chip tiling approach is also disclosed. The scalable architecture uses electromagnetic-circuit co-design of metasurfaces where each individual subwavelength meta-element is uniquely addressable and programmable. The disclosed device comprises a large array of such meta-elements. The design relies on integrated high frequency switches designed in conjugation with meta-element for massive reconfigurability of incident amplitude and phase. The disclosed chip is multi-functional and can perform beamforming, high speed spatial light modulation, dynamic holographic projections, and wavefront manipulation.
    Type: Application
    Filed: April 5, 2022
    Publication date: October 20, 2022
    Applicant: The Trustees of Princeton University
    Inventors: Suresh Venkatesh, Xuyang Lu, Hooman Saeidi, Kaushik Sengupta
  • Publication number: 20210218375
    Abstract: A load modulated balanced amplifier (LMBA) circuit can include an input pad of the LMBA circuit configured to receive an input signal on a semiconductor die. A transformer-based hybrid splitter can be coupled to the input pad and configured to provide a first split input signal and a second split input signal from the input signal. A control power amplifier circuit coupled the first split input signal and a power amplifier circuit coupled to the second split input signal.
    Type: Application
    Filed: January 15, 2021
    Publication date: July 15, 2021
    Inventors: Tushar Sharma, Chandrakanth Chappidi, Zheng Liu, Kaushik Sengupta
  • Patent number: 10886963
    Abstract: Embodiments generally disclosed herein relate to a sub-wavelength multi-port codesign approach between the unit transceiver element and the integrated EM interface to enable a generalized broadband MIMO array with individually programmable element patterns. The co-design approach allows processing of radiated signals at the antenna level distinct from classical arrays. The transmitter and receiver architectures with the integrated EM interface are implemented in 65-nm CMOS and have a bandwidth of 37-73 GHz. Wireless links with data rates up to 12 Gb/s are demonstrated across the spectrum with a wide range of reconfigurability of the active EM interface. The multifunctional EM interface and the broadband transceivers can enable future efficient and compact MIMO arrays for reliable links exploiting frequency, spatial, pattern and polarization diversities.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: January 5, 2021
    Assignee: THE TRUSTEES OF PRINCETON UNIVERSITY
    Inventors: Kaushik Sengupta, Xue Wu, Chandrakanth Chappidi, Xuyang Lu
  • Publication number: 20190393921
    Abstract: Embodiments generally disclosed herein relate to a sub-wavelength multi-port codesign approach between the unit transceiver element and the integrated EM interface to enable a generalized broadband MIMO array with individually programmable element patterns. The co-design approach allows processing of radiated signals at the antenna level distinct from classical arrays. The transmitter and receiver architectures with the integrated EM interface are implemented in 65-nm CMOS and have a bandwidth of 37-73 GHz. Wireless links with data rates up to 12 Gb/s are demonstrated across the spectrum with a wide range of reconfigurability of the active EM interface. The multifunctional EM interface and the broadband transceivers can enable future efficient and compact MIMO arrays for reliable links exploiting frequency, spatial, pattern and polarization diversities.
    Type: Application
    Filed: June 26, 2019
    Publication date: December 26, 2019
    Applicant: The Trustees of Princeton University
    Inventors: Kaushik Sengupta, Xue Wu, Chandrakanth Chappidi, Xuyang Lu
  • Patent number: 10422895
    Abstract: Passive components adapted for integration with at least one active semiconductor device, in an embodiment, comprise at least one metallic structure dimensioned and arranged to absorb and/or reflect a major fraction of incident electromagnetic radiation received at one or more wavelengths of a first group of wavelengths. This prevents radiation within the first group of wavelengths from being received and/or processed by the at least one active device. In an embodiment, one or more metallic structures are dimensioned and arranged to direct an amount of incident radiation, received at one or more wavelengths of a second group of wavelengths, sufficient to enable receiving or processing of incident radiation within the second group of wavelengths by the at least one active semiconductor device. In some embodiments, the passive component comprises a passive optical filter for use in spectroscopic applications, and the active semiconductor device is a detector or sensor.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: September 24, 2019
    Assignee: The Trustees of Princeton University, Office of Technology and Trademark Licensing
    Inventors: Lingyu Hong, Kaushik Sengupta
  • Patent number: 10367380
    Abstract: An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: July 30, 2019
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
  • Patent number: 10063191
    Abstract: A power amplifier system for amplifying an input having a carrier frequency having an amplitude. The system includes a plurality of n amplifiers coupled to an asymmetrical combiner formed of a passive network, each amplifier has an input and an output, the asymmetrical combiner has a plurality of inputs and an output, the output of each amplifier is coupled to an input of the asymmetrical combiner, an impedance viewed at the output of each of the n amplifiers is a function of the amplitude and phase at each of the other n?1 amplifiers. An amplitude/phase controller is coupled to the plurality of n amplifiers or the asymmetrical combiner to control the amplitude/phase at the asymmetrical combiner input. The amplitude/phase controller is configured to present an amplitude/phase at each input of the asymmetrical combiner to target an optimal impedance at the carrier frequency for each of the plurality of n amplifiers.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: August 28, 2018
    Assignee: THE TRUSTEES OF PRINCETON UNIVERSITY
    Inventors: Kaushik Sengupta, Chandrakanth Reddy Chappidi
  • Publication number: 20180233963
    Abstract: An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.
    Type: Application
    Filed: April 12, 2018
    Publication date: August 16, 2018
    Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
  • Publication number: 20180233964
    Abstract: An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.
    Type: Application
    Filed: April 12, 2018
    Publication date: August 16, 2018
    Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
  • Publication number: 20180226841
    Abstract: An RF lens includes a multitude of radiators adapted to transmit radio frequency electromagnetic EM waves whose phases are modulated so as to concentrate the radiated power in a small volume of space in order to power an electronic device positioned in that space. Accordingly, the waves emitted by the radiators are caused to interfere constructively at that space. The multitude of radiators are optionally formed in a one-dimensional or two-dimensional array. The electromagnetic waves radiated by the radiators have the same frequency but variable amplitudes.
    Type: Application
    Filed: March 30, 2018
    Publication date: August 9, 2018
    Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
  • Publication number: 20170279414
    Abstract: A power amplifier system for amplifying an input having a carrier frequency having an amplitude. The system includes a plurality of n amplifiers coupled to an asymmetrical combiner formed of a passive network, each amplifier has an input and an output, the asymmetrical combiner has a plurality of inputs and an output, the output of each amplifier is coupled to an input of the asymmetrical combiner, an impedance viewed at the output of each of the n amplifiers is a function of the amplitude and phase at each of the other n?1 amplifiers. An amplitude/phase controller is coupled to the plurality of n amplifiers or the asymmetrical combiner to control the amplitude/phase at the asymmetrical combiner input. The amplitude/phase controller is configured to present an amplitude/phase at each input of the asymmetrical combiner to target an optimal impedance at the carrier frequency for each of the plurality of n amplifiers.
    Type: Application
    Filed: March 24, 2017
    Publication date: September 28, 2017
    Applicant: The Trustees of Princeton University
    Inventors: Kaushik Sengupta, Chandrakanth Reddy Chappidi
  • Publication number: 20170153339
    Abstract: Passive components adapted for integration with at least one active semiconductor device, in an embodiment, comprise at least one metallic structure dimensioned and arranged to absorb and/or reflect a major fraction of incident electromagnetic radiation received at one or more wavelengths of a first group of wavelengths. This prevents radiation within the first group of wavelengths from being received and/or processed by the at least one active device. In an embodiment, one or more metallic structures are dimensioned and arranged to direct an amount of incident radiation, received at one or more wavelengths of a second group of wavelengths, sufficient to enable receiving or processing of incident radiation within the second group of wavelengths by the at least one active semiconductor device. In some embodiments, the passive component comprises a passive optical filter for use in spectroscopic applications, and the active semiconductor device is a detector or sensor.
    Type: Application
    Filed: February 13, 2017
    Publication date: June 1, 2017
    Inventors: Lingyu Hong, Kaushik Sengupta