Wideband Transceivers and Data Converters
C20. Qiuyan Xu, Chung-Ching Lin, Aditya Wadaskar, Danijela Cabric, and Subhanshu Gupta, “A 10ns Delay Range 1.5GHz BW True-Time-Delay Array-based Passive-Active Signal Combiner with Negative-Cap Stabilized RAMP for Fast Precise Localization”, IEEE Radio Frequency Integrated Circuits Symposium (RFIC) , pp. 1-4, June 2024. (PDF)
C19. Mohammad Ali Mokri, Yen-Chin Wang, Ruifu Li, Aditya Wadaskar, Subhanshu Gupta, Deukhyoun Heo, Danijela Cabric, “Custom Over-the-air Scalable mmWave Testbed for Fast TTD-based Rainbow Beam Training”, IEEE International Conference on Communications (ICC) , pp. 1-5, 2024. (PDF)
C18. Qiuyan Xu, Chung-Ching Lin, Huan Hu, and Subhanshu Gupta, “Common-Mode Drift Resilient Ring-Oscillator-Based Time-Domain Filter for Next-Generation Wireless”, accepted for publication to IEEE Midwest Symposium on Circuits and Systems (MWSCAS) , pp. 1-4, 2023. (PDF)
J16. Chung-Ching Lin, Qiuyan Xu, Huan Hu, and Subhanshu Gupta, “Design Considerations of Time-interleaved Discrete-time Beamformers Toward Wideband Communications”, accepted for publication to IEEE Transactions
of Circuits and Systems – II: Express Briefs (TCAS-II), pp. 1-5, 2023. (PDF)
J15. Soumen Mohapatra, Chung-Ching Lin, Subhanshu Gupta, Deukhyoun Heo, “Low Power Process and Temperature Invariant Constant Slope-and-Swing Ramp-based Phase Interpolator”, to be published in IEEE Journal of Solid-State Circuits, pp. 1-10, 2023. (PDF)
J14. C. -C. Lin et al., “Wideband Beamforming With Rainbow Beam Training Using Reconfigurable True-Time-Delay Arrays for Millimeter-Wave Wireless [Feature],” in IEEE Circuits and Systems Magazine, vol. 22, no. 4, pp. 6-25, Fourthquarter 2022, doi: 10.1109/MCAS.2022.3214408. (PDF)
C17. Jay Vasudev Kamat, Chung-Ching Lin, Pankaj Arora, and Subhanshu Gupta, “A Review of Non-Foster Circuits,” IEEE International Symposium on Circuits and Systems (ISCAS), to be presented in May 2023. (PDF)
J13. Qiuyan Xu, Aditya wadaskar*, Chung-Ching Lin, Han Yan, Veljko Boljanovic, Subhanshu Gupta, Danijela Cabric, “A Switching-less True-time-delay based Beam Probing Approach for Ultra-Low Latency Wireless Communications: System Analysis and Demonstration”, accepted for publication to IEEE Transactions of Circuits and Systems – II: Express Briefs (TCAS-II), pp. 1-5, 2022. (* – Equally-credited authors). (PDF)
J12. Chung-Ching Lin, Chase Puglisi, Veljko Boljanovic, Han Yan, Erfan Ghaderi, Jayce Gaddis, Qiuyan Xu, Sreeni Poolakkal, Danijela Cabric, Subhanshu Gupta, “Multi-Mode Spatial Signal Processor with Rainbow-like Fast Beam Training and Wideband Communications using True-Time-Delay Arrays,” accepted for publication at IEEE Journal of Solid-State Circuits (JSSC), pp. 1-12, 2022. arXiv:2201.02727 [cs, eess], Jan. 2022.(PDF)
C16. Chung-Ching Lin and Subhanshu Gupta, “Investigation and Implementations of Time interleaved Discrete-time Beamforming System for Wideband Communications,” SRC TechCon 2022, to be presented in Sept, 2022. (PDF)
C15. Soumen Mohapatra, Chung-Ching Lin, Mohammad Chahardori, Erfan Ghaderi, Aminul Hoque, Subhanshu Gupta, and Deuk Heo “A 345μW 1GHz Process and Temperature Invariant Constant Slope-and-Swing Ramp-based 7-bit Phase Interpolator for True-Time-Delay Spatial Signal Processors,” accepted to the IEEE Radio Frequency Integrated Circuits Symposium (RFIC), to be presented in June, 2022. (PDF)
J11. Chung-Ching Lin, Veljko Boljanovic, Han Yan, Erfan Ghaderi, Mohammad Ali Mokri, Jayce Jeron Gaddis, Aditya Wadaskar, Chase Puglisi, Soumen Mohapatra, Qiuyan Xu, Sreeni Poolakkal, Deukhyoun Heo, Subhanshu Gupta, Danijela Cabric, “Wideband Beamforming with Rainbow Beam Training using Reconfigurable True-Time-Delay Arrays for Millimeter-Wave Wireless,” arXiv:2111.15191 [cs, eess], Nov. 2021.(PDF)
C14. Chung-Ching Lin, Chase Puglisi, Veljko Boljanovic, Soumen Mohapatra, Han Yan, Erfan Ghaderi, Deukhyoun Heo, Danijela Cabric, Subhanshu Gupta, “A 4-Element 800MHz-BW 29mW True-Time-Delay Spatial Signal Processor Enabling Fast Beam-Training with Data Communications,” accepted to the IEEE European Solid-State Circuits Conference (ESSCIRC), to be presented in Sept., 2021. (PDF)
C13. Veljko Boljanovic, Han Yan, Erfan Ghaderi**, Deuk Heo, Subhanshu Gupta, Danijela Cabric, “Design of Millimeter-Wave Single-Shot Beam Training for True-Time-Delay Array,” 20th IEEE Signal Processing Advances in Wireless Communications (SPAWC), May 19–23 2020, Atlanta, GA, pp. 1–6.
J10. Shrestha Bansal, Benjamin Chonigman, Chase Puglisi, Amol Inamdar, Freddy Pena, Erik Lehman, Subhanshu Gupta, Deepnarayan Gupta, “Black-Box Optimization of Superconducting Circuits using Reduced-Complexity Neural Networks,” IEEE Transactions of Superconductivity (TAS) , vol. 5, no. 31, pp. 1-6, Aug. 2021. doi: 10.1109/TASC.2021.3061338. (PDF)
J9. Erfan Ghaderi, Subhanshu Gupta, “A 4-Element 500MHz 40mW 6-bit ADC enabled Time-Domain Spatial Signal Processor,” IEEE Journal of Solid-State Circuits (JSSC), vol. 56, no. 6, pp. 1784-1794, June 2021. (PDF) DOI: 10.1109/JSSC.2020.3040702.
J8. Veljko Boljanovic, Han Yan, Chung-Ching Lin, Soumen Mohapatra, Deuk Heo, Subhanshu Gupta, Danijela Cabric, “Fast Beam Training with True-Time-Delay Arrays in Wideband Millimeter-Wave Systems,” IEEE Transactions of Circuits and Systems – I: Regular Papers (TCAS-I), vol. 68, no. 4, pp. 1727-1739, April 2021. (PDF)
J7. Shrestha Bansal, Erfan Ghaderi, Chase Puglisi, and Subhanshu Gupta, “Neural-Network Based Self-Initializing Algorithm for Multi-Parameter Optimization of High-Speed ADCs,” IEEE Transactions of Circuits and Systems – II: Express Briefs (TCAS-II), vol. 68, no. 1, pp. 106-110, Jan. 2021. DOI: 10.1109/TCSII.2020.3012386. (PDF)
C12. Erfan Ghaderi, Chase Puglisi, Shrestha Bansal, Subhanshu Gupta, “10.8 A 4-Element 500MHz-Modulated-BW 40mW 6b 1GS/s Analog-Time-to-Digital-Converter-Enabled Spatial Signal Processor in 65nm CMOS”, IEEE Intl. Solid-State Circuits Conf. (ISSCC), 2020, pp. 186-188. (PDF)
C11. Shrestha Bansal, Benjamin Chonigman, Amol Inamdar, Erfan Ghaderi, Chase Puglisi, Freddy Penna, Erik Lehman, Subhanshu Gupta, Deepnarayan Gupta, “Closed-loop bias optimization of a single-flux quantum logic based 8-bit flash ADC”, IEEE Applied Superconductivity Conf. (ASC), July 2020.
C10. Chase Puglisi, Erfan Ghaderi, Shrestha Bansal, George La Rue, Subhanshu Gupta, “A 2Vpk-pk,diff Input Range 1GS/S Voltage-to-Time Converter with Tunable Distortion Compensation”, IEEE Intl. Conf. on Circuits and Systems (ISCAS), 2020. (PDF)
J6. Erfan Ghaderi, Ajith S. Ramani, Arya A. Rahimi, Deuk Heo, Sudip Shekhar and Subhanshu Gupta, “A 4-Element Wide Modulated Bandwidth MIMO Receiver with >35 dB Interference Cancellation,” IEEE Transactions of Microwave Theory and Techniques (TMTT), vol. 68, no. 9, pp. 3930-3941, Sept. 2020. (PDF)
J5. Erfan Ghaderi, Ajith S. Ramani, Arya A. Rahimi, Deuk Heo, Sudip Shekhar and Subhanshu Gupta, “An Integrated Discrete-Time Delay-Compensating Technique for Large-Array Beamformers,” IEEE Trans. on Circuits and Systems – I: Regular Papers (TCAS-1), vol. 66, no. 9, pp. 3296-3306, Sept. 2019. (PDF)
C9. Qiuyan Xu, Subhanshu Gupta, Ali Azam, Zhidong Bai and Jeffrey S. Walling, “A Hybrid ΔΣ/Nyquist Rate Switched Capacitor Power Amplifier in 65nm CMOS,” IEEE 61st Intl. Midwest Symp. on Circuits and Systems (MWSCAS), Windsor, ON, Canada, 2018, pp. 290-293.
J4. Sandipan Kundu, Subhanshu Gupta, David J. Allstot and Jeyanandh Paramesh, “Frequency-channelized Mismatch-shaped Quadrature Data Converters for Carrier Aggregation in MU-MIMO LTE-A”, IEEE Trans. on Circuits and Systems – I (TCAS-1), vol. 64, pp. 3-13, Jan. 2017. (PDF)
C8. Peter Osheroff, George L. Rue, Subhanshu Gupta, “A Highly Linear 4GS/s Uncalibrated Voltage-to-Time Converter with Wide Input Range”, IEEE Intl. Symp. of Circuits and Systems (ISCAS), Montreal, QC, 2016, pp. 89-92.
C7. Sandipan Kundu, Subhanshu Gupta, David Allstot, Jeyanandh Paramesh, “DAC Mismatch Shaping for Quadrature Sigma-Delta Data Converters”, IEEE Midwest Symp. on Circuits and Systems (MWSCAS), pp. 855-58, Aug. 2015.
J3. Subhanshu Gupta, Yi Tang, Jeyanandh Paramesh, David Allstot, “Multi-rate Polyphase DSP and LMS Calibration Schemes for Oversampled ADCs,” J. of Signal Processing Systems (JSPS), vol. 69, no. 3, pp. 329-338, Dec. 2012. (PDF)
J2. Subhanshu Gupta, Daibashish Gangopadhyay, Hasnain Lakdawala, Jacques Rudell, David Allstot, “0.8-2 GHz Fully Intregated QPLL-timed Direct-RF Sampling Band-Pass SD ADC in 0.13 .m CMOS,” IEEE J. of Solid-State Circuits (JSSC), vol. 47, pp. 1141-1153, May 2012 (Invited Paper). (PDF)
C6. Subhanshu Gupta, Daibashish Gangopadhyay, Hasnain Lakdawala, Jacques Rudell, David Allstot, “A QPLL-timed direct-RF sampling band-pass sigma-delta ADC with a 1.2 GHz tuning range in 0.13 um CMOS,” IEEE Radio Frequency Integrated Circuits Symp. (RFIC), 2011, pp. 25-28.
C5. Subhanshu Gupta, Yi Tang, Kuang-Wei Chang, Jeyanandh Paramesh, David Allstot,”M2ulti- rate Polyphase DSP and LMS Calibration Schemes for Oversampled Data Conversion Systems”, IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2011, pp. 1585-1588.
C4. Subhanshu Gupta, Daibashish Gangopadhyay, David Allstot, “A Mode-I/Mode-III UWB LNA with Programmable Gain and 20 dB WLAN Blocker Rejection in 130nm CMOS”, IEEE Int. Symp. on Circuits and Syst. (ISCAS), pp. 1093-1096, May 2010.
C3. Subhanshu Gupta, Yi Tang, Jeyanandh Paramesh, David Allstot, “Hybrid Modeling Techniques for Low OSR Cascade Continuous-Time Sigma-Delta Modulators”, IEEE Int. Symp. on Circuits and Systems (ISCAS), pp.2414-2417, 18-21 May 2008.
J1. Yi Tang, Kuang-Wei Chang, Subhanshu Gupta, Jeyanandh Paramesh, David Allstot, “Cascaded Complex ADCs with Adaptive Digital Calibration for I/Q Mismatch”, IEEE Trans. on Circuits and Syst. I: Regular Papers (TCAS-1), vol.55, no.3, pp.817-827, April 2008. (PDF)
C2. Yi Tang, Subhanshu Gupta, Jeyanandh Paramesh, David Allstot, “A Digital-Summing Feedforward sigma-delta Modulator and its Application to a Cascade ADC”, IEEE Int. Symp. on Circuits and Syst. (ISCAS), pp. 485-488, May 2007.
C1. Kristin Naegle, Subhanshu Gupta, David Allstot, “Design considerations for a 10 GHz CMOS transmit-receive switch”, IEEE Int. Symp. Circuits and Syst. (ISCAS), pp. 2104- 2107, May 2005.
Energy-Efficient Processing for IoT
J8. Huan Hu and Subhanshu Gupta, “A 0.22μW Single-Bit VCO Time-Domain Sensor-to-Digital Front-End with Reduced Supply Sensitivity,” IEEE Transactions of Circuits and Systems – 1: Regular Papers (TCAS-1), vol. , no. , pp. , 2021. (PDF)
C12. Chung-Ching Lin, Huan Hu, and Subhanshu Gupta, “Design and Investigation of Digital-Intensive Harmonically Injection-locked Ultra-low power TXs with Compact Type-I Correction Loops for Battery-constrained Radios”, SRC TECHCON, Sept. 2021. (PDF)
J7. Huan Hu, Chung-Ching Lin, and Subhanshu Gupta, “A 197.1μW Wireless Sensor SoC with an Energy-Efficient Analog Front-End and a Harmonic Injection-Locked OOK TX,” IEEE Transactions of Circuits and Systems – 1: Regular Papers (TCAS-1), vol. 68, no. 6, pp. 2444-2456, June 2021. (PDF)
J6. Chung-Ching Lin, Huan Hu, and Subhanshu Gupta, “Improved Performance Trade-Offs in Harmonic Injection-Locked ULP TX for Sub-GHz Radios,” IEEE Transactions of Microwave Theory and Techniques (TMTT), vol. 69, no. 6, pp. 2885-2898, June 2021, doi: 10.1109/TMTT.2021.3064056. (PDF)
J5. Chung-Ching Lin, Huan Hu, and Subhanshu Gupta, “Spur Minimization Techniques for Ultra-Low-Power Injection-Locked Transmitters,” IEEE TCAS-1, vol. 67, no. 11, pp. 3643-3655, Nov. 2020. (PDF)
C11. Chung-Ching Lin, Huan Hu, and Subhanshu Gupta, “A 66.97pJ/bit, 0.0413mm2 Self-Aligned PLL-Calibrated Harmonic-Injection-Locked TX with >62dBc Spur Suppression for IoT Applications”, IEEE RFIC, Jun. 2020. (PDF)
C10. Collin Kummer, Joseph Summers, Quinton Lum, Carl Sundsten, Chung-Ching Lin, Stephen Seslar, Wayne Monsky, and Subhanshu Gupta, “Experimental Testbed for Ultrasonic Wireless Power Transfer and Backscattering Based Localization for Future Implantable Devices,” IEEE ISCAS, 2020. (PDF)
J4. Leonardo B. Carreira, Paige Danielson, Arya Rahimi, Maximiliam Luppe, and Subhanshu Gupta, “Low-Latency Reconfigurable Entropy Random Number Generator with Bias Detection and Correction,” IEEE TCAS-1, vol. 67, no. 5, pp. 1562-1575, May 2020. (PDF)
C9. Siva Govindan, Huan Hu, Chung-Ching Lin and Subhanshu Gupta, “A 25.6μW 8.97ps Period Jitter Phase-Locked Relaxation Oscillator with sub-1µS Start-Up for Low-Power IoT,” IEEE ISCAS, Sapporo, Japan, 2019, pp. 1-5.
C8. Siva Govindan, Huan Hu, Chung-Ching Lin, Subhanshu Gupta, “A 25.6uW 8.97ps Period Jitter Phase-Locked Relaxation Oscillator with Sub-1uS Start-Up for Low-Power IoT”, IEEE ISCAS, 2019.
J3. Huan Hu, Tanzila Islam, Alla Kostyukova, Su Ha and Subhanshu Gupta, “From Battery Enabled to Natural Harvesting: Enzymatic BioFuel Cell Assisted Integrated Analog Front-End in 130nm CMOS for Long-Term Monitoring,” IEEE TCAS-1, vol. 66, no. 2, pp. 534-545, Feb. 2019. (PDF)
C7. Huan Hu, Tanzila Islam, Chung-Ching Lin, Alla Kostyukova, Su Ha, Subhanshu Gupta, “A 3.51μW 0.31μVrms Biofuel Cell Enabled Integrated Analog CMOS Front-End in 130nm CMOS” IEEE BioCAS, Cleve., OH, 2018, pp. 1-4.
C6. Arya A. Rahimi, Huan Hu, Krishnamoorthy Sivakumar, Subhanshu Gupta, “Energy-Efficient Serialized Walsh-Hadamard Transform Based Feature-Extraction for Information-Aware Compressive Sensing”, IEEE ISCAS , 2018, pp. 1-5, .
C5. A. A. Rahimi, H. Hu and S. Gupta, “A compressive sensing information aware analog front end for IoT sensors using adaptive clocking techniques,” IEEE MWSCAS, Boston, MA, 2017, pp. 325-328.
C4. Sandipan Kundu, Subhanshu Gupta, David Allstot, Jeyanandh Paramesh, “TCAS1: Mismatch-shaped Frequency-Interleaved Quadrature Data Converters for Carrier Aggregation in MU-MIMO”, IEEE ISCAS, May 2017, pp. 194.
C3. Arya Rahimi, Leonardo Carreira, Subhanshu Gupta, “Synchronous Multi-Signal Acquisition for WBSNs using Gold-code based Joint-Compressive Sensing”, IEEE BioCAS, 2016, pp. 236-239.
C2. Huan Hu, Martin Schiavenato, Subhanshu Gupta, “A Near Zero Power CMOS Relaxation Oscillator for Biomedical Applications with 19.1ppm/°C Temperature Coefficient”, IEEE Sensors Conf., Orlando Fl, Nov. 2016, pp. 1-3.
C1. Anas Delane, Jorge Bohorquez, Subhanshu Gupta, Martin Schiavenato, “Lomb Algorithm Versus Fast Fourier Transform in Heart Rate Variability Analyses of Pain in Premature Infants”, IEEE EMBC, Orlando FL, Aug. 2016, pp. 944-947.
J2. Taibur Rahman, Arya Rahimi, Subhanshu Gupta, Rahul Panat, “Microscale Additive Manufacturing and Modeling of Interdigitated Capacitive Touch Sensors”, Sensors and Actuators: A Physical, vol. 248, pp. 94-103, Sept. 2016. (PDF)
J1. Daibashish Gangopadhyay, Emily Allstot, Anna Dixon, Karthik Natarajan, Subhanshu Gupta, David Allstot, “A Compressed Sensing Analog Front-end for Wireless Bio-Sensors,” IEEE JSSC, vol. 49, pp. 426-439, Feb 2014. (PDF)
Abstracts and Posters
- Deukhyoun Heo, Subhanshu Gupta, “Performance-Complexity Trade-os in Millimeter-Wave Transceiver Arrays for Gigabit Mobile Access”, NSF mmWave RCN Workshop 3, Jan. 2018.
- Deukhyoun Heo, Subhanshu Gupta, “mmWave Receiver Array with Wideband Spectrum Sensing”, NSF mmWave RCN Workshop 2, July 2017.
- Deukhyoun Heo, Subhanshu Gupta, “Modeling and Design Techniques for Energy-Ecient and Scalable MIMO Transceivers for Gigabit Mobile Access”, NSF mmWave RCN Workshop 1, Dec. 2016.
- Sakire A. Ay, Jon Clements*, Huong T. D. Doan*, Luke L. Darrow*, David B. Hoekman*, Mackenzie M. Meade*, Kavita Shashank, Subhanshu Gupta, “Self-assisted 12-lead ECG Sensor Placement using RGB-D Sensors using Microsoft Kinect”, top 6 out of 110 posters, Frontiers of Medical Devices Conference BMES/FDA, Sept. 2016, DC, USA. (*-undergraduate researchers)
- L. Anderson, G. Rosen, E. Graham, R. Marcia, S. Gupta, S. Wei, “Dynamic energy proling in obesity: Big data, machine learning and sensors to improve obesity management”, NIH-NSF Innovation Lab Workshop, Lake Arrowhead, Jun. 13-16, 2016.
- S. Gupta, R. Panat, D. Heo, H. Liu, “A micro, highly-sensitive, piezo-resistive, wireless sensor and signal conditioning chip for movement detection”, Flextech Symposium on Flexible Electronics, Mar. 2016.
- Subhanshu Gupta, Arya Rahimi, “Automated Doctor Assistant (ADA) for Diagnostic Vital Signs Monitoring”, Life Sciences Innovation North West, Jun. 2015.