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).
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Patent number: 12141686Abstract: 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: GrantFiled: August 20, 2020Date of Patent: November 12, 2024Assignee: Purdue Research FoundationInventors: Abhronil Sengupta, Sri Harsha Choday, Yusung Kim, Kaushik Roy
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Patent number: 11949390Abstract: 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: GrantFiled: January 15, 2021Date of Patent: April 2, 2024Assignee: The Trustees of Princeton UniversityInventors: Tushar Sharma, Chandrakanth Chappidi, Zheng Liu, Kaushik Sengupta
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Publication number: 20230408395Abstract: 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: ApplicationFiled: November 19, 2021Publication date: December 21, 2023Applicant: The Trustees of Princeton UniversityInventors: Chengjie ZHU, Jesus Manuel Maldonado VAZQUEZ, Hao TANG, Kaushik SENGUPTA
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Publication number: 20230238713Abstract: 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: ApplicationFiled: November 14, 2022Publication date: July 27, 2023Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
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Publication number: 20230169241Abstract: 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: ApplicationFiled: December 1, 2022Publication date: June 1, 2023Applicant: The Trustees of Princeton UniversityInventors: Zheng Liu, Emir All Karahan, Kaushik Sengupta
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Patent number: 11616401Abstract: 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: GrantFiled: April 12, 2018Date of Patent: March 28, 2023Assignee: California Institute of TechnologyInventors: Kaushik Sengupta, Seyed Ali Hajimiri
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Patent number: 11616402Abstract: 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: GrantFiled: April 12, 2018Date of Patent: March 28, 2023Assignee: California Institute of TechnologyInventors: Kaushik Sengupta, Seyed Ali Hajimiri
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Patent number: 11502552Abstract: 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: GrantFiled: March 30, 2018Date of Patent: November 15, 2022Assignee: California Institute of TechnologyInventors: Kaushik Sengupta, Seyed Ali Hajimiri
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Publication number: 20220337240Abstract: 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: ApplicationFiled: April 5, 2022Publication date: October 20, 2022Applicant: The Trustees of Princeton UniversityInventors: Suresh Venkatesh, Xuyang Lu, Hooman Saeidi, Kaushik Sengupta
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Publication number: 20210218375Abstract: 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: ApplicationFiled: January 15, 2021Publication date: July 15, 2021Inventors: Tushar Sharma, Chandrakanth Chappidi, Zheng Liu, Kaushik Sengupta
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Patent number: 10886963Abstract: 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: GrantFiled: June 26, 2019Date of Patent: January 5, 2021Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Kaushik Sengupta, Xue Wu, Chandrakanth Chappidi, Xuyang Lu
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Publication number: 20190393921Abstract: 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: ApplicationFiled: June 26, 2019Publication date: December 26, 2019Applicant: The Trustees of Princeton UniversityInventors: Kaushik Sengupta, Xue Wu, Chandrakanth Chappidi, Xuyang Lu
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Patent number: 10422895Abstract: 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: GrantFiled: February 13, 2017Date of Patent: September 24, 2019Assignee: The Trustees of Princeton University, Office of Technology and Trademark LicensingInventors: Lingyu Hong, Kaushik Sengupta
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Patent number: 10367380Abstract: 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: GrantFiled: November 12, 2013Date of Patent: July 30, 2019Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Kaushik Sengupta, Seyed Ali Hajimiri
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Patent number: 10063191Abstract: 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: GrantFiled: March 24, 2017Date of Patent: August 28, 2018Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Kaushik Sengupta, Chandrakanth Reddy Chappidi
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Publication number: 20180233963Abstract: 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: ApplicationFiled: April 12, 2018Publication date: August 16, 2018Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
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Publication number: 20180233964Abstract: 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: ApplicationFiled: April 12, 2018Publication date: August 16, 2018Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
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Publication number: 20180226841Abstract: 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: ApplicationFiled: March 30, 2018Publication date: August 9, 2018Inventors: Kaushik Sengupta, Seyed Ali Hajimiri
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Publication number: 20170279414Abstract: 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: ApplicationFiled: March 24, 2017Publication date: September 28, 2017Applicant: The Trustees of Princeton UniversityInventors: Kaushik Sengupta, Chandrakanth Reddy Chappidi
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Publication number: 20170153339Abstract: 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: ApplicationFiled: February 13, 2017Publication date: June 1, 2017Inventors: Lingyu Hong, Kaushik Sengupta