Research

Advancing Innovation in Analog, Mixed-Signal, and RF integrated circuits (IC) Through Industry-Academic Collaboration

Research

Current Projects 2025/26

  • Machine Learning Inspired Cross-Talk Compensation in Wireline Links – Tejasvi Anand (OSU)
  • Reconfigurable, Low-Power, Low-Jitter, Multi-Phase Signal Generation for Next-Generation Connectivity – Deukhyoun Heo (WSU)
  • Low-Power Integrated Circuit and Integration Approaches for Intelligent Sensor Systems – Matthew Johnston (OSU)
  • High-Performance Mixed-Signal Circuits in CMOS – Un-Ku Moon (OSU)
  • A Co-design Assistant for EM Design and Development of RF Integrated Circuits – Arun Natarajan & Alireza Aghasi (OSU)
  • Over-Sampling Phase Noise Cancellation Phase-Locked Loop – Jacques “Chris” Rudell (UW)
  • Micro-Power CMOS Interface Circuits – Gabor Temes (OSU)
  • Machine Learning Performance Enhancement of Data Converters – Huazheng Wang (OSU)
  • Modeling and Design of Passives for RF and Millimeter-Wave Integrated Circuits – Andreas Weisshaar (OSU)

Research

CDADIC Publications (since 2012)

2025

M. Ali Mokri, E. Afshar, M. Aminul Hoque, S. Miraslani, S. Mirabbasi and D. Heo, “A Compact Single-Ended Common-Base Doherty PA in 90-nm BiCMOS With 37.3% Peak PAE for 5G Beamforming Arrays,” in IEEE Transactions on Microwave Theory and Techniques, vol. 73, no. 1, pp. 540-552, Jan. 2025, doi: 10.1109/TMTT.2024.3432602.

M. A. Hoque and D. Heo, “A Triple-Band, High DC-to-RF Efficiency, Multicore VCO With a Dual-Path Inductor and Mode-Switching Capacitor,” in IEEE Transactions on Microwave Theory and Techniques, vol. 73, no. 2, pp. 998-1008, Feb. 2025, doi: 10.1109/TMTT.2024.3439653.

Q. Xu et al., “A TTD-Based Fast Precise Localization Enabled by Passive–Active Signal Combiner With Negative-Capacitance Stabilized RAMP,” in IEEE Journal of Solid-State Circuits, doi: 10.1109/JSSC.2025.3546958.

T. -H. Chou et al., “System-on-Chip for Flow Cytometry with Impedance Measurement and Integrated Real-time Size Classification,” in IEEE Transactions on Biomedical Circuits and Systems, doi: 10.1109/TBCAS.2025.3576317.

S. Yu, L. Marun and M. L. Johnston, “A Differential Impedance Flow Cytometry Front-End with Baseline Current Cancellation,” in IEEE Transactions on Biomedical Circuits and Systems, doi: 10.1109/TBCAS.2025.3585089.

H. Abbasi, A. Slater, F. Beheshti, S. Poolakkal and S. Gupta, “A Four-Element True-Time-Delay Slice-Based Receiver Array for FR3 Upper Mid-Band Wireless,” in IEEE Journal of Solid-State Circuits, doi: 10.1109/JSSC.2025.3585532.

H. Wang, F. Adin, U. -K. Moon and G. C. Temes, “An 89.5 dB SNDR 500 kHz BW Largely Passive Fourth-Order Noise-Coupled Delta-Sigma Modulator,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 72, no. 8, pp. 3744-3752, Aug. 2025, doi: 10.1109/TCSI.2025.3538493.

F. Adin, H. Wang, L. Shi, R. Singh, E. Hancioglu and G. C. Temes, “98-dB SNDR Multi-Residue Two-Step Incremental ADC With Two-Capacitor SAR,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 72, no. 8, pp. 988-992, Aug. 2025, doi: 10.1109/TCSII.2025.3552742.

2024

D. Kar, S. Mohapatra, M. A. Hoque and D. Heo, “A 14 GHz Integer-N Sub-Sampling PLL With RMS-Jitter of 85.4 fs Occupying an Ultra Low Area of 0.0918 mm2,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 71, no. 2, pp. 595-605, Feb. 2024, doi: 10.1109/TCSI.2023.3341401.

S. Mohapatra, E. Afshar, Z. Zhou and D. Heo, “7.9 An 8b 6-12GHz 0.18mW/GHz DC Modulated Ramp-Based Phase Interpolator in 65nm CMOS Process,” 2024 IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, USA, 2024, pp. 140-142, doi: 10.1109/ISSCC49657.2024.10454438.

X. Li, Y. -H. Huang, F. Yin and J. C. Rudell, “A 2.4-GHz Full-Duplex Transceiver With Broadband, Linearity-Enhanced, and Long-Delay Spread Self-Interference Cancellation,” in IEEE Journal of Solid-State Circuits, vol. 59, no. 4, pp. 1246-1260, April 2024, doi: 10.1109/JSSC.2023.3312675.

A. Aghighi, M. Essawy and A. S. Natarajan, “A Frequency Doubler With Second Harmonic Feedback for Wideband, Efficient Frequency Multiplication at Millimeter-Wave,” in IEEE Transactions on Microwave Theory and Techniques, vol. 72, no. 5, pp. 2704-2715, May 2024, doi: 10.1109/TMTT.2024.3367882.

M. Essawy, K. Rashed, A. Aghighi and A. S. Natarajan, “A Low-Noise Dual-Path Self-Interference Cancellation Architecture for Watt-Level TX Power Handling in Simultaneous Transmit and Receive,” in IEEE Journal of Solid-State Circuits, vol. 59, no. 5, pp. 1337-1350, May 2024, doi: 10.1109/JSSC.2024.3355067.

M. Li et al., “An Easy-to-Drive Discrete-Time ADC Topology Using Digital Predictive Level-Shifting,” 2024 IEEE International Symposium on Circuits and Systems (ISCAS), Singapore, Singapore, 2024, pp. 1-5, doi: 10.1109/ISCAS58744.2024.10558507.

Q. Xu, C. -C. Lin, A. Wadaskar, H. Hu, D. Cabric and S. 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,” 2024 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Washington, DC, USA, 2024, pp. 227-230, doi: 10.1109/RFIC61187.2024.10600032.

M. A. Mokri, S. Miraslani, M. A. Hoque and D. Heo, “A Dual-Path Transformer-Based Multiband Power Amplifier for mm-Wave 5G Applications,” in IEEE Journal of Solid-State Circuits, vol. 59, no. 6, pp. 1643-1655, June 2024, doi: 10.1109/JSSC.2023.3344073.

F. Adin, H. Wang, L. Shi, R. Singh, E. Hancioglu and G. C. Temes, “Multi-Residue Two-Step Incremental ADC,” 2024 IEEE 67th International Midwest Symposium on Circuits and Systems (MWSCAS), Springfield, MA, USA, 2024, pp. 951-955, doi: 10.1109/MWSCAS60917.2024.10658736.

H. Wang, F. Adin, U. -K. Moon and G. C. Temes, “Wideband Low-Distortion Noise-Coupled Delta-Sigma ADC,” 2024 IEEE 67th International Midwest Symposium on Circuits and Systems (MWSCAS), Springfield, MA, USA, 2024, pp. 1226-1229, doi: 10.1109/MWSCAS60917.2024.10658689.

M. Megahed, Y. Chun, Z. Wang and T. Anand, “An SNR-Enhanced 8-Ary (SNRE-8) Modulation Technique for Wireline Transceivers Using Pulse Width, Position, and Amplitude Modulation,” in IEEE Journal of Solid-State Circuits, vol. 59, no. 8, pp. 2492-2505, Aug. 2024, doi: 10.1109/JSSC.2024.3361499.

J. Dawes, T. -H. Chou, B. Shen and M. L. Johnston, “Microfluidic Lab-on-CMOS Packaging Using Wafer-Level Molding and 3D-Printed Interconnects,” in IEEE Transactions on Biomedical Circuits and Systems, vol. 18, no. 4, pp. 821-833, Aug. 2024, doi: 10.1109/TBCAS.2024.3419804 (invited paper).

X. Lin, M. Megahed, B. Bose and T. Anand, “A 4-Channel 60Gb/s Aggregate & 0.167pJ/bit/dB Transceiver Achieving 33% Higher Pin-Efficiency Over Differential Using 4b6w Balanced Coding,” 2024 IEEE European Solid-State Electronics Research Conference (ESSERC), Bruges, Belgium, 2024, pp. 301-304, doi: 10.1109/ESSERC62670.2024.10719517.

X. Li et al., “A Highly Tunable RF Self-Interference Canceler with Near Real-Time Machine-Learning Augmented Adaptation for Full-Duplex Radio Applications,” 2024 IEEE European Solid-State Electronics Research Conference (ESSERC), Bruges, Belgium, 2024, pp. 436-439, doi: 10.1109/ESSERC62670.2024.10719413.

M. A. Hoque and D. Heo, “A Triple-Band, High DC-to-RF Efficiency, Multicore VCO With a Dual-Path Inductor and Mode-Switching Capacitor,” in IEEE Transactions on Microwave Theory and Techniques, doi: 10.1109/TMTT.2024.3439653.

T. -H. Chou, S. Yu, C. Wilson, J. Dawes, J. Park and M. L. Johnston, “An Impedance Measurement System-on-Chip for Flow Cytometry with On-Chip Size Classification,” 2024 IEEE Biomedical Circuits and Systems Conference (BioCAS), Xi’an, China, 2024, pp. 1-5, doi: 10.1109/BioCAS61083.2024.10798375.

H. -T. Lin, F. Iseini and A. Weisshaar, “Tunable True-Time-Delay Unit Based on Bridged T-Coil,” 2024 IEEE 33rd Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS), Toronto, ON, Canada, 2024, pp. 1-3, doi: 10.1109/EPEPS61853.2024.10753922.

F. Iseini et al., “A Tunable Inductor Peaking Technique for Optical Communication Systems,” 2024 IEEE 33rd Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS), Toronto, ON, Canada, 2024, pp. 1-3, doi: 10.1109/EPEPS61853.2024.10753708.

F. Beheshti, R. Li, S. Gupta and D. Cabric, “Early-Late Correlation for Wideband Interference AoA Estimation and Suppression in Analog Uniformly Spaced Linear TTD Arrays,” 2024 58th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, USA, 2024, pp. 639-646, doi: 10.1109/IEEECONF60004.2024.10943098.

A. Slater, H. Abbasi, S. Poolakkal, F. Beheshti and S. Gupta, “Enhancing Continuous Beam Angle Resolution for Next Generation Wireless Systems: A Multi-Stage Phase-Shifting Polyphase Filters Approach,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 71, no. 11, pp. 5200-5210, Nov. 2024, doi: 10.1109/TCSI.2024.3425861.

S. Yu and M. L. Johnston, “A 99.1-dB SFDR, 87.1-dB SNDR, 50-kS/s 3rd-Order Continuous-Time Incremental ADC With Current-Controlled-Oscillator Quantizer,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 71, no. 12, pp. 4799-4803, Dec. 2024, doi: 10.1109/TCSII.2024.3419792.

J. Park and M. L. Johnston, “A Sub-0.1% THD Sinusoidal-Signal Generator for Impedance Measurement Using a Delta-Sigma-Modulated Look-Up Table,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 71, no. 12, pp. 4794-4798, Dec. 2024, doi: 10.1109/TCSII.2024.3419705.

2023

H. Bialek, M. Johnston and A. Natarajan, “31.8 A 0.4-to-0.95GHz Distributed N-Path Noise-Cancelling Ultra-Low-Power RX with Integrated Passives Achieving −85dBm/100kb/s Sensitivity, −41dB SIR and 174dB RX FoM in 22nm CMOS,” 2023 IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, USA, 2023, pp. 474-476, doi: 10.1109/ISSCC42615.2023.10067338.

J. Liu and D. J. Allstot, “Compressed Sensing Σ-Δ Modulators and a Recovery Algorithm for Multi-Channel Wireless Bio-Signal Acquisition,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 70, no. 4, pp. 1429-1438, April 2023, doi: 10.1109/TCSI.2023.3237616.

S. Sengupta and M. L. Johnston, “A SiPM-Based Gamma Spectrometer With Field-Programmable Energy Binning for Data-Efficient Isotope Analysis,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 70, no. 3, pp. 1133-1146, March 2023, doi: 10.1109/TCSI.2022.3199484 (invited paper).

M. Megahed and T. Anand, “A Sub-μW Energy Harvester Architecture With Reduced Top/Bottom Plate Switching Loss Achieving 80.66% Peak Efficiency in 180-nm CMOS,” in IEEE Journal of Solid-State Circuits, vol. 58, no. 5, pp. 1386-1399, May 2023, doi: 10.1109/JSSC.2023.3241878.

J. Park and M. L. Johnston, “A Sinusoidal Signal Generator Using a Delta-Sigma Modulated Look-Up Table and Analysis of Dither,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 70, no. 5, pp. 1764-1768, May 2023, doi: 10.1109/TCSII.2023.3261062 (invited paper).

J. Kamat, C. -C. Lin, P. Arora and S. Gupta, “A Review of CMOS Non-Foster Circuits,” 2023 IEEE International Symposium on Circuits and Systems (ISCAS), Monterey, CA, USA, 2023, pp. 1-5, doi: 10.1109/ISCAS46773.2023.10182082.

M. Li, C. Y. Lee, H. Wang, G. C. Temes and U. -K. Moon, “A 16- Bit 100kHz Bandwidth Pseudo-Pseudo-Differential Delta-Sigma ADC,” 2023 IEEE International Symposium on Circuits and Systems (ISCAS), Monterey, CA, USA, 2023, pp. 1-5, doi: 10.1109/ISCAS46773.2023.10181747.

H. Wang and G. C. Temes, “A Low-Distortion Power-Efficient Feedforward Technique for DT Delta-Sigma ADCs,” 2023 IEEE International Symposium on Circuits and Systems (ISCAS), Monterey, CA, USA, 2023, pp. 1-4, doi: 10.1109/ISCAS46773.2023.10181444.

A. Aghighi, M. Essawy and A. Natarajan, “A 47 GHz to 70 GHz Frequency Doubler Exploiting 2nd-Harmonic Feedback with 10.1 dBm Psat and ntotal of 22% in 65 nm CMOS,” 2023 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), San Diego, CA, USA, 2023, pp. 161-164, doi: 10.1109/RFIC54547.2023.10186145.

M. Essawy, K. Rashed, A. Aghighi and A. Natarajan, “A Frequency-Tunable Dual-Path Frequency-Translated Noise-Cancelling Self-Interference Canceller RX with>16dBm SI Power-Handling in 65nm CMOS,” 2023 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), San Diego, CA, USA, 2023, pp. 229-232, doi: 10.1109/RFIC54547.2023.10186163.

A. Aghighi, M. Essawy and A. Natarajan, “A 47 GHz to 70 GHz Frequency Doubler Exploiting 2nd-Harmonic Feedback with 10.1 dBm Psat and ntotal of 22% in 65 nm CMOS,” 2023 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), San Diego, CA, USA, 2023, pp. 161-164, doi: 10.1109/RFIC54547.2023.10186145.

J. Baylon, M. A. Hoque and D. Heo, “Spanning the Spectrum: High-Performance Signal Source Design for the Millimeter-Wave Age,” in IEEE Microwave Magazine, vol. 24, no. 7, pp. 16-28, July 2023, doi: 10.1109/MMM.2023.3265457.

V. Vesely, C. Y. Lee, T. Anand and U. -K. Moon, “PLL-SAR: A New High-Speed Analog to Digital Converter Architecture,” 2023 IEEE 66th International Midwest Symposium on Circuits and Systems (MWSCAS), Tempe, AZ, USA, 2023, pp. 84-88, doi: 10.1109/MWSCAS57524.2023.10405967.

A. V. Kayyil, B. Qiao and D. Allstot, “A Digitally Configurable Outphasing Switched-Capacitor-Based RF Transmitter,” 2023 IEEE 66th International Midwest Symposium on Circuits and Systems (MWSCAS), Tempe, AZ, USA, 2023, pp. 664-668, doi: 10.1109/MWSCAS57524.2023.10406097.

Q. Xu, C. -C. Lin, H. Hut and S. Gupta, “Common-Mode Drift Resilient Ring-Oscillator-Based Time-Domain Filter for Next-Generation Wireless,” 2023 IEEE 66th International Midwest Symposium on Circuits and Systems (MWSCAS), Tempe, AZ, USA, 2023, pp. 991-995, doi: 10.1109/MWSCAS57524.2023.10406147.

J. Liu and D. J. Allstot, “A Chopper-Stabilized Switched-Capacitor Front-End for Peripheral Nervous System Recording,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 70, no. 8, pp. 3065-3074, Aug. 2023, doi: 10.1109/TCSI.2023.3282555.

S. Yu, T. -H. Chou, S. Bose, J. Cook, J. Park and M. L. Johnston, “A Reconfigurable Tri-Mode Frequency-Locked Loop Readout Circuit for Biosensor Interfaces,” in IEEE Transactions on Biomedical Circuits and Systems, vol. 17, no. 4, pp. 768-781, Aug. 2023, doi: 10.1109/TBCAS.2023.3288505 (invited paper).

T. -H. Chou, S. Yu, S. Bose, J. Cook, J. Park and M. L. Johnston, “Wireless, Multi-Sensor System-on-Chip for pH and Amperometry Powered by Body Heat,” in IEEE Transactions on Biomedical Circuits and Systems, vol. 17, no. 4, pp. 782-794, Aug. 2023, doi: 10.1109/TBCAS.2023.3286348 (invited paper).

S. Mohapatra, C. -C. Lin, S. Gupta and D. Heo, “Low-Power Process and Temperature-Invariant Constant Slope-and-Swing Ramp-Based Phase Interpolator,” in IEEE Journal of Solid-State Circuits, vol. 58, no. 8, pp. 2267-2277, Aug. 2023, doi: 10.1109/JSSC.2023.3242935.

H.-T. Lin and A. Weisshaar, “Robust and Efficient Design of On-Chip Compact Delay Units Based on Bridged T-Coil,” SRC TECHCON 2023, Sept. 2023.

S. Gupta, B. Jann, M. Essawy, K. Rashed and A. Natarajan, “A Broadband LNA and Sub-Harmonic Mixer Based Multi-Mode RX in 22nm CMOS,” 2023 18th European Microwave Integrated Circuits Conference (EuMIC), Berlin, Germany, 2023, pp. 1-4, doi: 10.23919/EuMIC58042.2023.10288916.

J. Dawes, T. -H. Chou and M. L. Johnston, “Lab-on-CMOS Packaging using Wafer-Level Molding and Direct-Write 3D-Printed Interconnects,” 2023 IEEE Biomedical Circuits and Systems Conference (BioCAS), Toronto, ON, Canada, 2023, pp. 1-5, doi: 10.1109/BioCAS58349.2023.10388923.

H. -T. Lin and A. Weisshaar, “Robust and Efficient Design of On-Chip Compact Delay Units Based on Bridged T-Coil,” 2023 IEEE 32nd Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS), Milpitas, CA, USA, 2023, pp. 1-3, doi: 10.1109/EPEPS58208.2023.10314869.

C. -C. Lin, Q. Xu, H. Hu and S. Gupta, “Design Considerations of Time-Interleaved Discrete-Time Beamformers Toward Wideband Communications,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 70, no. 11, pp. 4068-4072, Nov. 2023, doi: 10.1109/TCSII.2023.3282628.

M. A. Hoque et al., “Highly Efficient Multiband Harmonic-Tuned GaN RF Synchronous Rectifier,” in IEEE Transactions on Microwave Theory and Techniques, vol. 71, no. 11, pp. 5060-5072, Nov. 2023, doi: 10.1109/TMTT.2023.3276065.

C.-H. Chen and G. C. Temes, Incremental Data Converters for Sensor Interfaces, Wiley-IEEE Press, Nov. 2023, ISBN: 978-1-394-17840-7.

H. Bialek, M. L. Johnston and A. Natarajan, “A Highly Integrated Distributed Mixer Receiver for Low-Power Wireless Radios,” in IEEE Journal of Solid-State Circuits, vol. 58, no. 12, pp. 3421-3432, Dec. 2023, doi: 10.1109/JSSC.2023.3317778.

M. Li et al., “A Rail-to-Rail 12 MS/s 91.3 dB SNDR 94.1 dB DR Two-Step SAR ADC With Integrated Input Buffer Using Predictive Level-Shifting,” in IEEE Journal of Solid-State Circuits, vol. 58, no. 12, pp. 3555-3564, Dec. 2023, doi: 10.1109/JSSC.2023.3308121.

2022

2021

2020

2019

N. Tang, B. Nguyen, Y. Tang, W. Hong, Z. Zhou and D. Heo, “8.4 Fully Integrated Buck Converter with 78% Efficiency at 365mW Output Power Enabled by Switched-Inductor Capacitor Topology and Inductor Current Reduction Technique,” 2019 IEEE International Solid-State Circuits Conference – (ISSCC), San Francisco, CA, USA, 2019, pp. 152-154, doi: 10.1109/ISSCC.2019.8662530.

K. Clocker, S. Sengupta and M. L. Johnston, “A Fully-Integrated, Single-Element CMOS Anemometer,” in IEEE Sensors Letters, vol. 3, no. 2, pp. 1-4, Feb. 2019, Art no. 2500204, doi: 10.1109/LSENS.2019.2892467.

M. Katanbaf, K. -D. Chu, T. Zhang, C. Su and J. C. Rudell, “Two-Way Traffic Ahead: RF\/Analog Self-Interference Cancellation Techniques and the Challenges for Future Integrated Full-Duplex Transceivers,” in IEEE Microwave Magazine, vol. 20, no. 2, pp. 22-35, Feb. 2019, doi: 10.1109/MMM.2018.2880489.

S. N. Ali, P. Agarwal, S. Gopal, S. Mirabbasi and D. Heo, “A 25–35 GHz Neutralized Continuous Class-F CMOS Power Amplifier for 5G Mobile Communications Achieving 26% Modulation PAE at 1.5 Gb/s and 46.4% Peak PAE,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 66, no. 2, pp. 834-847, Feb. 2019, doi: 10.1109/TCSI.2018.2860019.

B. Shen, S. Bose and M. L. Johnston, “Fully-Integrated Charge Pump Design Optimization for Above-Breakdown Biasing of Single-Photon Avalanche Diodes in 0.13- μm CMOS,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 66, no. 3, pp. 1258-1269, March 2019, doi: 10.1109/TCSI.2018.2880217.

B. Shen, S. Bose and M. L. Johnston, “A 1.2 V–20 V Closed-Loop Charge Pump for High Dynamic Range Photodetector Array Biasing,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 66, no. 3, pp. 327-331, March 2019, doi: 10.1109/TCSII.2018.2850341.

N. Tang et al., “Analog-Assisted Digital Capacitorless Low-Dropout Regulator Supporting Wide Load Range,” in IEEE Transactions on Industrial Electronics, vol. 66, no. 3, pp. 1799-1808, March 2019, doi: 10.1109/TIE.2018.2840492.

Y. Wang and G. C. Temes, “Scaling for Optimum Dynamic Range and Noise-Power Tradeoff: A Review of Analog Circuit Design Techniques,” in IEEE Solid-State Circuits Magazine, vol. 11, no. 2, pp. 98-103, Spring 2019, doi: 10.1109/MSSC.2019.2910646.

M. Megahed, Y. Ramadass and T. Anand, “A Sub 1μW Switched Source + Capacitor Architecture Free of Top/Bottom Plate Parasitic Switching Loss Achieving Peak Efficiency of 80.66% at a Regulated 1.8V Output in 180nm,” 2019 IEEE Custom Integrated Circuits Conference (CICC), Austin, TX, USA, 2019, pp. 1-4, doi: 10.1109/CICC.2019.8780341.

B. Nguyen et al., “A Sub-1V Analog-Assisted Inverter-Based Digital Low-Dropout Regulator with a Fast Response Time at 25mA/100ps and 99.4% Current Efficiency,” 2019 IEEE Custom Integrated Circuits Conference (CICC), Austin, TX, USA, 2019, pp. 1-4, doi: 10.1109/CICC.2019.8780173.

L. Renaud, J. Baylon, S. Gopal, M. A. Hoque and D. Heo, “Analysis of Systematic Losses in Hybrid Envelope Tracking Modulators,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 66, no. 4, pp. 1319-1330, April 2019, doi: 10.1109/TCSI.2018.2883531.

T. He, M. Kareppagoudr, Y. Zhang, E. Caceres, U. -K. Moon and G. C. Temes, “Noise Filtering and Linearization of Single-Ended Sampled-Data Circuits,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 66, no. 4, pp. 1331-1341, April 2019, doi: 10.1109/TCSI.2018.2885802.

C. Y. Lee, A. ElShater, P. K. Venkatachala, H. Hu, B. Xiao and U. -K. Moon, “Application of Ring-Amplifiers for Low-Power Wide-Bandwidth Digital Subsampling ADC-PLL,” 2019 IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, 2019, pp. 1-5, doi: 10.1109/ISCAS.2019.8702142.

A. V. Kayyil, P. K. Ramakrishna, O. Yong, D. J. Allstot and H. C. Yang, “A Two-Stage CMOS OTA with Load-Pole Cancellation,” 2019 IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, 2019, pp. 1-5, doi: 10.1109/ISCAS.2019.8702347.

C. Y. Lee, P. K. Venkatachala, A. ElShater, B. Xiao, H. Hu and U. -K. Moon, “Cascoded Ring Amplifiers for High Speed and High Accuracy Settling,” 2019 IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, 2019, pp. 1-5, doi: 10.1109/ISCAS.2019.8702710.

P. Payandehnia, H. Maghami, H. Mirzaie, M. L. Johnston and G. C. Temes, “An Amplifier-Free 0–2 SAR-VCO MASH ΔΣ ADC,” 2019 IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, 2019, pp. 1-5, doi: 10.1109/ISCAS.2019.8702397.

S. Sengupta and M.L. Johnston, “Two-step, piecewise-linear SAR ADC with programmable transfer function,” Electronics Letters 55 (8), pp. 444-446, May 2019.  https://doi.org/10.1049/el.2019.0138

Y. Liu and A. Natarajan, “A 60 GHz Polarization-Duplex TX/RX Front-End with Dual-Pol Antenna-IC Co-Integration in SiGe BiCMOS,” 2019 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Boston, MA, USA, 2019, pp. 127-130, doi: 10.1109/RFIC.2019.8701829.

M. Johnson et al., “A 4-element 28 GHz Millimeter-wave MIMO Array with Single-wire Interface using Code-Domain Multiplexing in 65 nm CMOS,” 2019 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Boston, MA, USA, 2019, pp. 243-246, doi: 10.1109/RFIC.2019.8701732.

S. N. Ali, M. Aminul Hoque, S. Gopal, M. Chahardori, M. A. Mokri and D. Heo, “A Continually-Stepped Variable-Gain LNA in 65-nm CMOS Enabled by a Tunable-Transformer for mm-Wave 5G Communications,” 2019 IEEE MTT-S International Microwave Symposium (IMS), Boston, MA, USA, 2019, pp. 926-929, doi: 10.1109/MWSYM.2019.8701023.

S. Gopal, M. Chahardori, M. A. Hoque, S. N. Ali, M. A. Mokri and D. Heo, “Dual-Equalization-Path Energy-Area-Efficient Near Field Inductive Coupling for Contactless 3D IC,” 2019 IEEE MTT-S International Microwave Symposium (IMS), Boston, MA, USA, 2019, pp. 742-745, doi: 10.1109/MWSYM.2019.8701097.

M. A. Hoque, S. N. Ali, M. A. Mokri, S. Gopal, M. Chahardori and D. Heo, “A Highly Efficient Dual-band Harmonic-tuned GaN RF Synchronous Rectifier with Integrated Coupler and Phase Shifter,” 2019 IEEE MTT-S International Microwave Symposium (IMS), Boston, MA, USA, 2019, pp. 1320-1323, doi: 10.1109/MWSYM.2019.8700900.

J. Baylon, P. Agarwal, L. Renaud, S. N. Ali and D. Heo, “A Ka-Band Dual-Band Digitally Controlled Oscillator With −195.1-dBc/Hz FoM T Based on a Compact High- Q Dual-Path Phase-Switched Inductor,” in IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 7, pp. 2748-2758, July 2019, doi: 10.1109/TMTT.2019.2917671.

S. N. Ali, P. Agarwal, S. Gopal and D. Heo, “Transformer-Based Predistortion Linearizer for High Linearity and High Modulation Efficiency in mm-Wave 5G CMOS Power Amplifiers,” in IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 7, pp. 3074-3087, July 2019, doi: 10.1109/TMTT.2019.2914900.

M. Kareppagoudr, E. Caceres, Y. -W. Kuo, J. Shakya, Y. Wang and G. C. Temes, “Passive slew rate enhancement technique for Switched-Capacitor Circuits,” 2019 IEEE 62nd International Midwest Symposium on Circuits and Systems (MWSCAS), Dallas, TX, USA, 2019, pp. 913-916, doi: 10.1109/MWSCAS.2019.8885160.

Y. -W. Kuo, P. K. Ramakrishna, A. V. Kayyil and D. J. Allstot, “Low-Voltage Tracking RC Frequency Compensation in Two-Stage Operational Amplifiers,” 2019 IEEE 62nd International Midwest Symposium on Circuits and Systems (MWSCAS), Dallas, TX, USA, 2019, pp. 782-785, doi: 10.1109/MWSCAS.2019.8885045.

M. Sadollahi and G. C. Temes, “A 10-MHz BW 77.9 dB SNDR DT MASH  ΔΣ ADC With NC-VCO-Based Quantizer and OPAMP Sharing,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 66, no. 9, pp. 3384-3392, Sept. 2019, doi: 10.1109/TCSI.2019.2928591.

B. Xiao et al., “An 80mA Capacitor-Less LDO with 6.5µA Quiescent Current and No Frequency Compensation Using Adaptive-Deadzone Ring Amplifier,” 2019 IEEE Asian Solid-State Circuits Conference (A-SSCC), Macau, Macao, 2019, pp. 39-42, doi: 10.1109/A-SSCC47793.2019.9056970.

X. Dong, C. Masse, F. M. Rotella and A. Weisshaar, “Compact Layout Redesign of Output Matching Network of a 5.8-GHz SiGe Power Amplifier,” in IEEE Microwave and Wireless Components Letters, vol. 29, no. 12, pp. 791-794, Dec. 2019, doi: 10.1109/LMWC.2019.2948479.

A. Devaraj, M. Megahed, Y. Liu, A. Ramachandran and T. Anand, “A Switched Capacitor Multiple Input Single Output Energy Harvester (Solar + Piezo) Achieving 74.6% Efficiency With Simultaneous MPPT,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 66, no. 12, pp. 4876-4887, Dec. 2019, doi: 10.1109/TCSI.2019.2934985.

W. Hong et al., “A Dual-Output Step-Down Switched-Capacitor Voltage Regulator With a Flying Capacitor Crossing Technique for Enhanced Power Efficiency,” in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 27, no. 12, pp. 2861-2871, Dec. 2019, doi: 10.1109/TVLSI.2019.2930892.

2018

2017

2016

2015

2014

2013

Y. Zhang, C. H. Chen, G. C. Temes, “Accuracy-enhanced switched-capacitor stages using low-gain opamps,” Electronics Letters 49 (1), 22-23, 2013.  https://doi.org/10.1049/el.2012.3827

C. H. Chen, Y. Jung, J. L. Ceballos, G. C. Temes, “Multi-step extended-counting analogue-to-digital converters,” Electronics Letters 49 (1), 30-31, 2013.  https://doi.org/10.1049/el.2012.3655

O. Rajaee and U. -K. Moon, “Highly Linear Noise-Shaped Pipelined ADC Utilizing a Relaxed Accuracy Front-End,” in IEEE Journal of Solid-State Circuits, vol. 48, no. 2, pp. 502-515, Feb. 2013, doi: 10.1109/JSSC.2012.2227605.

C. H. Chen, Y. Zhang, Y. Jung, T. He, J.L. Ceballos, G. C. Temes, “Two-step incremental analogue-to-digital converter,” Electronics Letters 49 (4), 250-251, 2013.  https://doi.org/10.1049/el.2013.0104

J. Jung, P. Upadyaya, D. Heo, J.-H. Kim, B.-S. Kim, “Wide tuning range LC VCO with parallel coupled negative gm cells,” Electronic Letters 49 (9), pp. 627-628, April 2013. https://doi.org/10.1049/el.2012.4508

Tao Tong, Wenhuan Yu, Pavan K Hanumolu, Gabor C Temes, “Calibration technique for SAR analog-to-digital converters,” Analog Integrated Circuits and Signal Processing Vol. 73, Issue 1, pp. 301-309, 2012.

S. P. Sah, S. Zhu, T. N. Nguyen, X. Yu and D. Heo, “A 12–40 GHz low phase variation highly linear BiCMOS variable gain amplifier,” 2013 IEEE International Symposium on Circuits and Systems (ISCAS), Beijing, China, 2013, pp. 1119-1122, doi: 10.1109/ISCAS.2013.6572047.

S. P. Sah et al., “A V-band wide locking-range injection-locked CMOS VCO for wireless network-on-chip receiver,” 2013 IEEE MTT-S International Microwave Symposium Digest (MTT), Seattle, WA, USA, 2013, pp. 1-4, doi: 10.1109/MWSYM.2013.6697632.

T. Oh, H. Venkatram and U. -K. Moon, “A 70MS/s 69.3dB SNDR 38.2fJ/conversion-step time-based pipelined ADC,” 2013 Symposium on VLSI Circuits, Kyoto, Japan, 2013, pp. C96-C97.

T. Oh, N. Maghari and U. -K. Moon, “A Second-Order ΔΣ ADC Using Noise-Shaped Two-Step Integrating Quantizer,” in IEEE Journal of Solid-State Circuits, vol. 48, no. 6, pp. 1465-1474, June 2013, doi: 10.1109/JSSC.2013.2257491.

C. Donovana, A. Dewan, D. Heo, Z. Lewandowski, and H. Beyenal, “Sediment microbial fuel cell powering a submersible ultrasonic receiver: New approach to remote monitoring,” Journal of Power Sources, vol. 233, pp. 79-85, July 2013.

S. P. Sah, X. Yu and D. Heo, “Design and Analysis of a Wideband 15–35-GHz Quadrature Phase Shifter With Inductive Loading,” in IEEE Transactions on Microwave Theory and Techniques, vol. 61, no. 8, pp. 3024-3033, Aug. 2013, doi: 10.1109/TMTT.2013.2267749.

S.P. Sah and D. Heo, “A Low Power K− and Ka−band Receiver for Beamforming Applications,” Semiconductor Research Corporation (SRC) TECHCON 2013 Proceedings, Austin, TX, Sept. 2013.

V. S. Shilimkar, S. G. Gaskill, and A. Weisshaar, “Modeling and Characterization of Metal Fill Parasitics in Radio Frequency Integrated Circuits,” Semiconductor Research Corporation (SRC) TECHCON 2013 Proceedings, Austin, TX, Sept. 2013 (winner of Best of Session Award).

S. G. Gaskill, V. S. Shilimkar and A. Weisshaar, “High-frequency modeling of metal fill eddy-current loss in integrated circuits,” 2013 European Microwave Conference, Nuremberg, Germany, 2013, pp. 975-978, doi: 10.23919/EuMC.2013.6686822.

S. Zhu, Y. You, S. P. Sah, D. Heo and K. F. Warnick, “An 8-channel Ku band transmit beamformer with low gain/phase imbalance between channels,” 2013 European Microwave Conference, Nuremberg, Germany, 2013, pp. 947-950, doi: 10.23919/EuMC.2013.6686815.

S. P. Sah and D. Heo, “An ultra-wideband 15–35 GHz phase-shifter for beamforming applications,” 2013 European Microwave Integrated Circuit Conference, Nuremberg, Germany, 2013, pp. 264-267.

Y. You, S. Zhu, S. Sah, D. Heo and K. F. Warnick, “A low phase error X-band eight-channel SiGe PIN diode phased array receiver,” 2013 European Microwave Integrated Circuit Conference, Nuremberg, Germany, 2013, pp. 268-271.

P. Liu et al., “Design Techniques for Load-Independent Direct Bulk-Coupled Low Power QVCO,” in IEEE Transactions on Microwave Theory and Techniques, vol. 61, no. 10, pp. 3658-3665, Oct. 2013, doi: 10.1109/TMTT.2013.2279778.

P. Agarwal, S. P. Sah and D. Heo, “A low leakage pull-down network for PLL with 6.7 dB improvement in reference spur,” 2013 Asia-Pacific Microwave Conference Proceedings (APMC), Seoul, Korea (South), 2013, pp. 98-100, doi: 10.1109/APMC.2013.6695203.

Y. Zhang, C. H. Chen, G. C. Temes, “Efficient technique for excess loop delay compensation in continuous-time ΔΣ modulators,” Electronics Letters 49 (24), 1522-1523, 2013.  https://doi.org/10.1049/el.2013.3470

V. S. Shilimkar, S. G. Gaskill and A. Weisshaar, “Broadband characterization of on-chip RF spiral inductor using multi-line TRL calibration,” 82nd ARFTG Microwave Measurement Conference, Columbus, OH, USA, 2013, pp. 1-4, doi: 10.1109/ARFTG-2.2013.6737354

2012

R. Pawlowski et al., “A 530mV 10-lane SIMD processor with variation resiliency in 45nm SOI,” 2012 IEEE International Solid-State Circuits Conference, San Francisco, CA, USA, 2012, pp. 492-494, doi: 10.1109/ISSCC.2012.6177105.

L. Xia, J. Wang, W. Beattie, J. Postman and P. Y. Chiang, “Sub-2-ps, Static Phase Error Calibration Technique Incorporating Measurement Uncertainty Cancellation for Multi-Gigahertz Time-Interleaved T/H Circuits,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 59, no. 2, pp. 276-284, Feb. 2012, doi: 10.1109/TCSI.2011.2162382. 

J. Cheng et al., “A near-threshold, multi-node, wireless body area sensor network powered by RF energy harvesting,” Proceedings of the IEEE 2012 Custom Integrated Circuits Conference, San Jose, CA, USA, 2012, pp. 1-4, doi: 10.1109/CICC.2012.6330681.

S. Gupta, D. Gangopadhyay, H. Lakdawala, J. C. Rudell and D. J. Allstot, “A 0.8–2 GHz Fully-Integrated QPLL-Timed Direct-RF-Sampling Bandpass ΣΔ ADC in 0.13 μm CMOS,” in IEEE Journal of Solid-State Circuits, vol. 47, no. 5, pp. 1141-1153, May 2012, doi: 10.1109/JSSC.2012.2185530. 

P. Liu, P. Sun, J. Jung, D. Heo, “PLL charge pump with adaptive body-bias compensation for minimum current variation,” Electronics letters 48 (1), pp. 16-18, 2012. https://doi.org/10.1049/el.2011.2835

T. Oh, H. Venkatram, J. Guerber and U. -K. Moon, “Correlated jitter sampling for jitter cancellation in pipelined TDC,” 2012 IEEE International Symposium on Circuits and Systems (ISCAS), Seoul, Korea (South), 2012, pp. 810-813, doi: 10.1109/ISCAS.2012.6272164.

J. Guerber, H. Venkatram, T. Oh and U. -K. Moon, “Enhanced SAR ADC energy efficiency from the early reset merged capacitor switching algorithm,” 2012 IEEE International Symposium on Circuits and Systems (ISCAS), Seoul, Korea (South), 2012, pp. 2361-2364, doi: 10.1109/ISCAS.2012.6271770.

V. Bhagavatula and J. C. Rudell, “Transformer feedback based CMOS amplifiers,” 2012 IEEE International Symposium on Circuits and Systems (ISCAS), Seoul, Korea (South), 2012, pp. 237-240, doi: 10.1109/ISCAS.2012.6271773.

W. Li, T. Wang, J. Cao, and G. C. Temes, “Teraohm on-chip resistance realisation using switched capacitor topologies,” Electronics Letters 48 (11), 2012. https://doi.org/10.1049/el.2012.0767

T. Tong, W. Yu, P. K. Hanumolu and G. C. Temes, “Calibration technique for SAR analog-to-digital converters,” 2012 IEEE International Symposium on Circuits and Systems (ISCAS), Seoul, Korea (South), 2012, pp. 2993-2996, doi: 10.1109/ISCAS.2012.6271947.

W. Li, T. Wang and G. C. Temes, “Digital foreground calibration methods for SAR ADCs,” 2012 IEEE International Symposium on Circuits and Systems (ISCAS), Seoul, Korea (South), 2012, pp. 1054-1057, doi: 10.1109/ISCAS.2012.6271410.

J. Cao, R. Raich, G. C. Temes and G. Cauwenberghs, “Multi-channel mixed-signal noise source with applications to stochastic equalization,” 2012 IEEE International Symposium on Circuits and Systems (ISCAS), Seoul, Korea (South), 2012, pp. 2497-2500, doi: 10.1109/ISCAS.2012.6271808.

C. -H. Chen, J. Crop, J. Chae, P. Chiang and G. C. Temes, “A 12-bit 7 µW/channel 1 kHz/channel incremental ADC for biosensor interface circuits,” 2012 IEEE International Symposium on Circuits and Systems (ISCAS), Seoul, Korea (South), 2012, pp. 2969-2972, doi: 10.1109/ISCAS.2012.6271940.

T. Wang, W. Li, H. Yoshizawa, M. Aslan and G. C. Temes, “A 101 dB DR 1.1 mW audio delta-sigma modulator with direct-charge-transfer adder and noise shaping enhancement,” 2012 IEEE Asian Solid State Circuits Conference (A-SSCC), Kobe, Japan, 2012, pp. 249-252, doi: 10.1109/IPEC.2012.6522672.

Y. Jung, S. Lee, C.-H. Chen, G. C. Temes, “Double noise coupling ΔΣ analogue-to-digital converter,” Electronics letters 48 (10), 557-558, May 2012. https://doi.org/10.1049/el.2012.0272

T. Oh, N. Maghari and U. -K. Moon, “A 5MHz BW 70.7dB SNDR noise-shaped two-step quantizer based ΔΣ ADC,” 2012 Symposium on VLSI Circuits (VLSIC), Honolulu, HI, USA, 2012, pp. 162-163, doi: 10.1109/VLSIC.2012.6243840.

W. Yu and G. C. Temes, “Digital DAC calibration technique for DS and incremental modulators,” Electronics letters 48 (13), 754-755, June 2012.

W. Wesson, V. Bhagavatula, K. W. Pang, S. Shin, P. Yang and J. C. Rudell, “A long-range, fully-integrated, regulator-less CMOS power amplifier for wireless sensor communications,” 2012 IEEE Radio Frequency Integrated Circuits Symposium, Montreal, QC, Canada, 2012, pp. 145-148, doi: 10.1109/RFIC.2012.6242251.

V. S. Shilimkar, S. G. Gaskill and A. Weisshaar, “Efficient modeling of metal fill parasitic capacitance in on-chip transmission lines,” 2012 IEEE/MTT-S International Microwave Symposium Digest, Montreal, QC, Canada, 2012, pp. 1-3, doi: 10.1109/MWSYM.2012.6259749.

Peng Liu, S. P. Sah, Jaeyoung Jung, P. Upadhyaya and Deukhyoun Heo, “Load independent bulk-coupled low power quadrature LC VCO,” 2012 IEEE/MTT-S International Microwave Symposium Digest, Montreal, QC, 2012, pp. 1-3, doi: 10.1109/MWSYM.2012.6259637.

A. O. Mikul, Siqi Zhu, P. Sun, Yu You, S. P. Sah and Deukhyoun Heo, “Compact low phase imbalance broadband attenuator based on SiGe PIN diode,” 2012 IEEE/MTT-S International Microwave Symposium Digest, Montreal, QC, Canada, 2012, pp. 1-3, doi: 10.1109/MWSYM.2012.6259653.

J. C. Rudell and V. Bhagavatula, “Strategies for highly-integrated long-range silicon transceivers for sensor data communication,” 2012 IEEE 55th International Midwest Symposium on Circuits and Systems (MWSCAS), Boise, ID, USA, 2012, pp. 690-693, doi: 10.1109/MWSCAS.2012.6292114.

X. Meng, T. Wang, G. C. Temes, “Charge compensation technique for switched-capacitor circuits,” Electronics letters 48 (16), 988-990, Aug. 2012.

J. Guerber, M. Gande and U. -K. Moon, “The Analysis and Application of Redundant Multistage ADC Resolution Improvements Through PDF Residue Shaping,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 59, no. 8, pp. 1733-1742, Aug. 2012, doi: 10.1109/TCSI.2011.2180435.

Tao Tong, Pavan K Hanumolu, Gabor C Temes, “A semi-synchronous SAR ADC,” Analog Integrated Circuits and Signal Processing Vol. 71, Issue 3, pp 407-410, 2012.

S. Zhu, A.O. Mikul, P. Sun, Y. You, Jong-Hoon Kim, Byeong-Sam Kim, and Deukhyoun Heo, “Inductor-less SiGe pin diode attenuator with low phase variations,” Electronics Letters 48, (20), pp. 1287 – 1289, Sept. 2012.  https://doi.org/10.1049/el.2012.2151

T. Jiang, W. Liu, F. Y. Zhong, C. Zhong, K. Hu and P. Y. Chiang, “A Single-Channel, 1.25-GS/s, 6-bit, 6.08-mW Asynchronous Successive-Approximation ADC With Improved Feedback Delay in 40-nm CMOS,” in IEEE Journal of Solid-State Circuits, vol. 47, no. 10, pp. 2444-2453, Oct. 2012, doi: 10.1109/JSSC.2012.2204543. 

J. Guerber, H. Venkatram, M. Gande, A. Waters and U. -K. Moon, “A 10-b Ternary SAR ADC With Quantization Time Information Utilization,” in IEEE Journal of Solid-State Circuits, vol. 47, no. 11, pp. 2604-2613, Nov. 2012, doi: 10.1109/JSSC.2012.2211696.

Nam-Jin Oh, Deuk Heo, “A low-power, low phase noise CMOS VCO with suppression of 1/f flicker noise up-conversion,” IEICE Electronics Express, vol. 9, no. 24, pp. 1881-1886, Dec. 2012. https://doi.org/10.1587/elex.9.1881.