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公开(公告)号：US11233503B2
公开(公告)日：2022-01-25
申请号：US16825128
申请日：2020-03-20
Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION
Inventor： Ali Azam , Jeffrey Walling
Abstract: Embodiments of the disclosure are drawn to a low-voltage temperature sensor. The temperature sensor may include a waveform generator, a complementary-to-absolute-temperature (CTAT) voltage generator, a voltage reference, two comparators, and digital logic. A waveform of the waveform generator may be compared to both the CTAT voltage and the voltage reference. The output of the comparison of the CTAT and the waveform may be a pulse-width modulated signal that is temperature-dependent. The output of the comparison of the voltage reference and the waveform may be a signal with constant pulse width. The digital logic may receive the pulsed signals and take a ratio of the two signals to determine a temperature.
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公开(公告)号：US20200310482A1
公开(公告)日：2020-10-01
申请号：US16825071
申请日：2020-03-20
Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION
Inventor： Ali Azam , Jeffrey Walling
IPC: G05F3/24
Abstract: Embodiments of the disclosure are drawn to voltage reference circuits and methods of designing same. The voltage reference circuit may include a main stage and one or more auxiliary stages. The output of the main stage may be a reference voltage. The auxiliary stages may provide a feedback voltage that reduces a temperature dependence of the reference voltage. Each stage may include two or more transistors. The transistors may operate in a sub-threshold mode to provide the reference voltage.
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公开(公告)号：US20200313664A1
公开(公告)日：2020-10-01
申请号：US16825128
申请日：2020-03-20
Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION
Inventor： Ali Azam , Jeffrey Walling
Abstract: Embodiments of the disclosure are drawn to a low-voltage temperature sensor. The temperature sensor may include a waveform generator, a complementary-to-absolute-temperature (CTAT) voltage generator, a voltage reference, two comparators, and digital logic. A waveform of the waveform generator may be compared to both the CTAT voltage and the voltage reference. The output of the comparison of the CTAT and the waveform may be a pulse-width modulated signal that is temperature-dependent. The output of the comparison of the voltage reference and the waveform may be a signal with constant pulse width. The digital logic may receive the pulsed signals and take a ratio of the two signals to determine a temperature.
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公开(公告)号：US11258410B2
公开(公告)日：2022-02-22
申请号：US16528956
申请日：2019-08-01
Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION
Inventor： Jeffrey Walling , Ali Azam , Zhidong Bai
Abstract: Embodiments of the disclosure are drawn to apparatuses a hybrid switched capacitor array power amplifier (H-SCPA). The H-SCPA may have an array of storage elements divided into sub-arrays. A first sub-array may be configured to receive a delta sigma modulated (DSM) signal. A second sub-array may be configured to receive a Nyquist-rate signal. The H-SCPA may provide an output based on the received DSM and Nyquist-rate signals. The first sub-array and second sub-array may have different architectures. The DSM signal may represent the least significant bits of the signal and the Nyquist-rate signal may represent the most significant bits of the signal.
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Patent Agency Ranking
公开(公告)号：US10965330B2
公开(公告)日：2021-03-30
申请号：US16789096
申请日：2020-02-12
Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION
Inventor： Jeffrey Walling , Zhidong Bai , Ali Azam , Wen Yuan
Abstract: Embodiments of the disclosure are drawn to apparatuses and methods for a tunable digital power amplifier (DPA). The tunable DPA may be coupled to a reconfigurable capacitor to form a frequency tunable DPA. The capacitance of the reconfigurable capacitor may be adjusted to optimize the DPA to operate at a desired frequency band. The single tunable DPA may operate over a wide range of frequencies.
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公开(公告)号：US10797773B2
公开(公告)日：2020-10-06
申请号：US16789098
申请日：2020-02-12
Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION
Inventor： Jeffrey Walling , Wen Yuan , Zhidong Bai , Ali Azam
Abstract: Embodiments of the disclosure are drawn to apparatuses and methods for transmission beamforming. A multiphase beam steering transmitter may include a transmitter array of multiple transmitters. A transmitter may include a multiphase logic decoder that directly controls a power amplifier to perform a vector addition of a beam phase and amplitude. A transmitter of the array may include a multiphase clock generator that outputs basis phases with embedded phase modulation data which are output to the multiphase logic decoder. The multiphase clock generator may receive a modulated clock signal. The PA may be a multiphase switched capacitor power amplifier. The multiphase logic decoder may output two phases adjacent to a desired phase as inputs to clocks of the SCPA. The multiphase logic decoder may further output a control signal that determines which cells in the SCPA are activated and when.
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公开(公告)号：US20200259540A1
公开(公告)日：2020-08-13
申请号：US16789098
申请日：2020-02-12
Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION
Inventor： Jeffrey Walling , Wen Yuan , Zhidong Bai , Ali Azam
Abstract: Embodiments of the disclosure are drawn to apparatuses and methods for transmission beamforming. A multiphase beam steering transmitter may include a transmitter array of multiple transmitters. A transmitter may include a multiphase logic decoder that directly controls a power amplifier to perform a vector addition of a beam phase and amplitude. A transmitter of the array may include a multiphase clock generator that outputs basis phases with embedded phase modulation data which are output to the multiphase logic decoder. The multiphase clock generator may receive a modulated clock signal. The PA may be a multiphase switched capacitor power amplifier. The multiphase logic decoder may output two phases adjacent to a desired phase as inputs to clocks of the SCPA. The multiphase logic decoder may further output a control signal that determines which cells in the SCPA are activated and when.
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公开(公告)号：US20200259512A1
公开(公告)日：2020-08-13
申请号：US16789096
申请日：2020-02-12
Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION
Inventor： Jeffrey Walling , Zhidong Bai , Ali Azam , Wen Yuan
Abstract: Embodiments of the disclosure are drawn to apparatuses and methods for a tunable digital power amplifier (DPA). The tunable DPA may be coupled to a reconfigurable capacitor to form a frequency tunable DPA. The capacitance of the reconfigurable capacitor may be adjusted to optimize the DPA to operate at a desired frequency band. The single tunable DPA may operate over a wide range of frequencies.
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公开(公告)号：US20200044615A1
公开(公告)日：2020-02-06
申请号：US16528956
申请日：2019-08-01
Applicant: UNIVERSITY OF UTAH RESEARCH FOUNDATION
Inventor： Jeffrey Walling , Ali Azam , Zhidong Bai
Abstract: Embodiments of the disclosure are drawn to apparatuses a hybrid switched capacitor array power amplifier (H-SCPA). The H-SCPA may have an array of storage elements divided into sub-arrays. A first sub-array may be configured to receive a delta sigma modulated (DSM) signal. A second sub-array may be configured to receive a Nyquist-rate signal. The H-SCPA may provide an output based on the received DSM and Nyquist-rate signals. The first sub-array and second sub-array may have different architectures. The DSM signal may represent the least significant bits of the signal and the Nyquist-rate signal may represent the most significant bits of the signal.
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