| 2026 | ISCAS | A 6.5nV/√Hz Chopper Stabilized Amplifier with Dead-Time Ripple Compensation (DT-RC) Technique for Precision Data Acquisition. | Emmanuel Amankrah, Zakariah Mohammed, Patricia Tutuani, Randall L. Geiger |
| 2026 | ISCAS | A 241MHz/mA Low Power, Low noise Capacitively Coupled Chopper Amplifier with Integrated Feedforward Passive Ripple Reduction. | Mohammed Zakariah, Emmanuel Amankrah, Patricia Tutuani, Randall L. Geiger |
| 2025 | ISCAS | A Hybrid BJT/Subthreshold MOSFET-Based Voltage Reference with a sub 1ppm/℃ Temperature Coefficient. | Emmanuel Amankrah, Patricia Tutuani, Randall L. Geiger |
| 2024 | ISCAS | Compact Temperature Sensor with Voltage-Ratio Current-Independent Output for Reference Independent Data Conversion. | Kwabena Oppong Banahene, Randall L. Geiger |
| 2023 | ISCAS | A Resistorless Precision Curvature-Compensated Bandgap Voltage Reference Based on the VGO Extraction Technique. | Daniel Adjei, Bryce Gadogbe, Degang Chen, Randall L. Geiger |
| 2023 | ISCAS | Sub-ppm/°C High Performance Voltage Reference. | Bryce Gadogbe, Daniel Adjei, Kwabena Oppong Banahene, Randall L. Geiger, Degang Chen |
| 2022 | ISCAS | Hardware Security Vulnerability in Analog Signal Chain Filters. | Kwabena Oppong Banahene, Matthew R. Strong, Bryce Gadogbe, Degang Chen, Randall L. Geiger |
| 2018 | ISCAS | A High Constancy Rail-to-rail Level Shift Generator for SEIR-based BIST circuit for ADCs. | Hao Meng, Randall L. Geiger, Degang Chen |
| 2018 | ISCAS | Transparent side channel trigger mechanism on analog circuits with PAAST hardware Trojans. | Qianqian Wang, Degang Chen, Randall L. Geiger |
| 2017 | ITC | An on-chip ADC BIST solution and the BIST enabled calibration scheme. | Xiankun Jin, Tao Chen, Mayank Jain, Arun Kumar Barman, David Kramer, Doug Garrity, Randall L. Geiger, Degang Chen |
| 2015 | ISCAS | A programmable temperature trigger circuit. | Qianqian Wang, Randall L. Geiger, Degang Chen |
| 2015 | ISCAS | Direct temperature to digital converters with low supply sensitivity for power/thermal management. | Yen-Ting Wang, Chen Zhao, Degang Chen, Randall L. Geiger |
| 2015 | ISCAS | A calibration technique for SAR analog-to-digital converter based on INL testing with quantization bits and redundant bit. | Xu Zhang, Chongli Cai, Hao Meng, Siva Sudani, Randall L. Geiger, Degang Chen |
| 2014 | ISCAS | Identification and break of positive feedback loops in Trojan States Vulnerable Circuits. | Zhiqiang Liu, You Li, Yan Duan, Randall L. Geiger, Degang Chen |
| 2014 | VTS | Auto-identification of positive feedback loops in multi-state vulnerable circuits. | Zhiqiang Liu, You Li, Randall L. Geiger, Degang Chen |
| 2013 | ISCAS | High resolution ADC spectral test with known impure source and non-coherent sampling. | Siva Sudani, Degang Chen, Randall L. Geiger |
| 2013 | ISCAS | Practical methods for verifying removal of Trojan stable operating points. | Yen-Ting Wang, Degang Chen, Randall L. Geiger |
| 2013 | ISCAS | A CMOS on-chip temperature sensor with -0.21°C 0.17 °C inaccuracy from -20 °C to 100 °C. | Chen Zhao, Yen-Ting Wang, David Genzer, Degang Chen, Randall L. Geiger |
| 2012 | ISCAS | A low cost method for testing offset and gain error for ADC BIST. | Jingbo Duan, Degang Chen, Randall L. Geiger |
| 2012 | ISCAS | Sinusoidal signal generation for production testing and BIST applications. | Bharath K. Vasan, Siva Sudani, Degang Chen, Randall L. Geiger |
| 2012 | ISCAS | A compact low-power supply-insensitive CMOS current reference. | Chen Zhao, Randall L. Geiger, Degang Chen |
| 2011 | ISCAS | Linear vt-based temperature sensors with low process sensitivity and improved power supply headroom. | Chen Zhao, Jun He, Sheng-Huang Lee, Karl Peterson, Randall L. Geiger, Degang Chen |
| 2010 | ISCAS | Phase control of triangular stimulus generator for ADC BIST. | Jingbo Duan, Degang Chen, Randall L. Geiger |
| 2010 | ISCAS | Detailed analyses in prediction of capacitive-mismatch-induced offset in dynamic comparators. | Jun He, Degang Chen, Randall L. Geiger |
| 2010 | ISCAS | Linearity testing of ADCs using low linearity stimulus and Kalman filtering. | Bharath K. Vasan, Randall L. Geiger, Degang Chen |
| 2009 | ISCAS | Cost Effective Signal Generators for ADC BIST. | Jingbo Duan, Degang Chen, Randall L. Geiger |
| 2009 | ISCAS | Optimal Area and Impedance Allocation for Dual-string DACs. | Thu T. Duong, Degang Chen, Randall L. Geiger |
| 2008 | ISCAS | A simple and accurate method to predict offset voltage in dynamic comparators. | Jun He, Sanyi Zhan, Degang Chen, Randall L. Geiger |
| 2008 | ISCAS | Adjustable hysteresis CMOS Schmitt triggers. | Vipul Katyal, Randall L. Geiger, Degang Chen |
| 2008 | ISCAS | System identification -based reduced-code testing for pipeline ADCs' linearity test. | Hanqing Xing, Degang Chen, Randall L. Geiger, Le Jin |
| 2007 | ISCAS | Linear Current Division Principles. | Haibo Fei, Randall L. Geiger |
| 2007 | ISCAS | Deterministic DEM DAC Performance Analysis. | Hanjun Jiang, Degang Chen, Randall L. Geiger |
| 2007 | ITC | A fully digital-compatible BIST strategy for ADC linearity testing. | Hanqing Xing, Hanjun Jiang, Degang Chen, Randall L. Geiger |
| 2007 | VTS | Code-Density Test of Analog-to-Digital Converters Using Single Low-Linearity Stimulus Signal. | Le Jin, Degang Chen, Randall L. Geiger |
| 2006 | ISCAS | Explicit characterization of bandgap references. | Xin Dai, Degang Chen, Randall L. Geiger |
| 2006 | ISCAS | A self-calibrated bandgap voltage reference with 0.5 ppm/°C temperature coefficient. | Le Jin, Hanqing Xing, Degang Chen, Randall L. Geiger |
| 2006 | ISCAS | Unit resistor characterization for matching-critical circuit design. | Yu Lin, Randall L. Geiger |
| 2006 | ISCAS | Dynamic calibration of current-steering DAC. | Chao Su, Randall L. Geiger |
| 2006 | ISCAS | Minimization of total area in integrated active RC filters. | Kazuyuki Wada, Randall L. Geiger |
| 2006 | ISCAS | Linearity test for high resolution DACs using low-accuracy DDEM flash ADCs. | Hanqing Xing, Degang Chen, Randall L. Geiger |
| 2006 | ISCAS | Characterization of a current-mode bandgap circuit structure for high-precision reference applications. | Hanqing Xing, Le Jin, Degang Chen, Randall L. Geiger |
| 2006 | ITC | Linearity Test of Analog-to-Digital Converters Using Kalman Filtering. | Le Jin, Degang Chen, Randall L. Geiger |
| 2006 | ITC | Testing of Precision DACs Using Low-Resolution ADCs with Dithering. | Le Jin, Hosam Haggag, Randall L. Geiger, Degang Chen |
| 2005 | ISCAS | An adaptive, truly background calibration method for high speed pipeline ADC design. | Degang Chen, Zhongjun Yu, Randall L. Geiger |
| 2005 | ISCAS | A cost-effective histogram test-based algorithm for digital calibration of high-precision pipelined ADCs. | Xin Dai, Degang Chen, Randall L. Geiger |
| 2005 | ISCAS | An N | Xin Dai, Chengming He, Hanqing Xing, Degang Chen, Randall L. Geiger |
| 2005 | ISCAS | Dither incorporated deterministic dynamic element matching for high resolution ADC test using extremely low resolution DACs. | Hanjun Jiang, Degang Chen, Randall L. Geiger |
| 2005 | ISCAS | A digital self-calibration algorithm for ADCs based on histogram test using low-linearity input signals. | Le Jin, Degang Chen, Randall L. Geiger |
| 2005 | ISCAS | Power dependence of feedback amplifiers on opamp architecture. | Yu Lin, Vipul Katyal, Randall L. Geiger |
| 2005 | ISCAS | kT/C constrained optimization of power in pipeline ADCs. | Yu Lin, Vipul Katyal, Mark Schlarmann, Randall L. Geiger |
| 2005 | ISCAS | A test strategy for time-to-digital converters using dynamic element matching and dithering. | Wenbo Liu, Hanqing Xing, Le Jin, Randall L. Geiger, Degang Chen |
| 2005 | ISCAS | A segmented thermometer coded DAC with deterministic dynamic element matching for high resolution ADC test. | Beatriz Olleta, Hanjun Jiang, Degang Chen, Randall L. Geiger |
| 2005 | ISCAS | Fast-switching adaptive bandwidth frequency synthesizer using a loop filter with switched zero-resistor array. | Sreenath Thoka, Randall L. Geiger |
| 2005 | ISCAS | A two-step DDEM ADC for accurate and cost-effective DAC testing. | Hanqing Xing, Degang Chen, Randall L. Geiger |
| 2005 | ISCAS | Pipeline ADC linearity testing with dramatically reduced data capture time. | Zhongjun Yu, Degang Chen, Randall L. Geiger, Ioannis Papantonopoulos |
| 2005 | ITC | High-performance ADC linearity test using low-precision signals in non-stationary environments. | Le Jin, Kumar L. Parthasarathy, Turker Kuyel, Randall L. Geiger, Degang Chen |
| 2005 | ITC | A 16-bit resistor string DAC with full-calibration at final test. | Kumar L. Parthasarathy, Turker Kuyel, Zhongjun Yu, Degang Chen, Randall L. Geiger |
| 2004 | ISCAS | Optimum area allocation for resistors and capacitors in continuous-time monolithic filters. | Haibo Fei, Randall L. Geiger, Degang Chen |
| 2004 | ISCAS | Robust design of high gain amplifiers using dynamical systems and bifurcation theory. | Chengming He, Le Jin, Degang Chen, Randall L. Geiger |
| 2004 | ISCAS | N | Chengming He, Kuangming Yap, Degang Chen, Randall L. Geiger |
| 2004 | ISCAS | A background digital self-calibration scheme for pipelined ADCs based on transfer curve estimation. | Hanjun Jiang, Haibo Fei, Degang Chen, Randall L. Geiger |
| 2004 | ISCAS | An SoC compatible linearity test approach for precision ADCs using easy-to-generate sinusoidal stimuli. | Le Jin, Chengming He, Degang Chen, Randall L. Geiger |
| 2004 | ISCAS | Fast implementation of a linearity test approach for high-resolution ADCs using non-linear ramp signals. | Le Jin, Chengming He, Degang Chen, Randall L. Geiger |
| 2004 | ISCAS | Testing high resolution ADCs using deterministic dynamic element matching. | Beatriz Olleta, Hanjun Jiang, Degang Chen, Randall L. Geiger |
| 2004 | ISCAS | Parameter optimization of deterministic dynamic element matching DACs for accurate and cost-effective ADC testing. | Beatriz Olleta, Hanjun Jiang, Degang Chen, Randall L. Geiger |
| 2004 | ISCAS | The SRE/SRM approach for spectral testing of AMS circuits. | Zhongjun Yu, Degang Chen, Randall L. Geiger |
| 2004 | ISCAS | Accurate testing of ADC's spectral performance using imprecise sinusoidal excitations. | Zhongjun Yu, Degang Chen, Randall L. Geiger |
| 2004 | ITC | Testing High Resolution ADCs with Low Resolution/Accuracy Deterministic Dynamic Element Matched DACs. | Hanjun Jiang, Beatriz Olleta, Degang Chen, Randall L. Geiger |
| 2004 | ITC | A Computationally Efficient Method for Accurate Spectral Testing without Requiring Coherent Sampling. | Zhongjun Yu, Degang Chen, Randall L. Geiger |
| 2003 | ISCAS | A low-voltage compatible two-stage amplifier with ≥120 dB gain in standard digital CMOS. | Chengming He, Degang Chen, Randall L. Geiger |
| 2003 | ISCAS | A deterministic dynamic element matching approach to ADC testing. | Beatriz Olleta, Lance Juffer, Degang Chen, Randall L. Geiger |
| 2003 | ISCAS | Experimental evaluation and validation of a BIST algorithm for characterization of A/D converter performance. | Kumar L. Parthasarathy, Le Jin, Turker Kuyel, Dana Price, Degang Chen, Randall L. Geiger |
| 2003 | ISCAS | A 40 GHz modified-Colpitts voltage controlled oscillator with increased tuning range. | Chao Su, Sreenath Thoka, Kee-Chee Tiew, Randall L. Geiger |
| 2003 | ISCAS | Inflection point correction for voltage references. | Kee-Chee Tiew, J. Cusey, Randall L. Geiger |
| 2003 | ISCAS | 1-D and 2-D switching strategies achieving near optimal INL for thermometer-coded current steering DACs. | Zhongjun Yu, Degang Chen, Randall L. Geiger |
| 2003 | ITC | Linearity Testing of Precision Analog-to-Digital Converters Using Stationary Nonlinear Inputs. | Le Jin, Kumar L. Parthasarathy, Turker Kuyel, Degang Chen, Randall L. Geiger |
| 2002 | ISCAS | All digital transistor high gain operational amplifier using positive feedback technique. | Mezyad M. Amourah, Randall L. Geiger |
| 2002 | ISCAS | Formulation of INL and DNL yield estimation in current-steering D/A converters. | Yonghua Cong, Randall L. Geiger |
| 2002 | ISCAS | Resistors layout for enhancing yield of R-2R DACs. | Yu Lin, Randall L. Geiger |
| 2002 | ISCAS | Transient bit error rate analysis of data recovery systems using jitter models. | Yonghui Tang, Randall L. Geiger |
| 2002 | ISCAS | A curvature compensation technique for bandgap voltage references using adaptive reference temperature. | Kee-Chee Tiew, J. Cusey, Randall L. Geiger |
| 2001 | ISCAS | Gain and bandwidth boosting techniques for high-speed operational amplifiers. | Mezyad M. Amourah, Randall L. Geiger |
| 2001 | ISCAS | A high gain strategy with positive-feedback gain enhancement technique. | Mezyad M. Amourah, Randall L. Geiger |
| 2001 | ISCAS | Current mirror circuit with accurate mirror gain for low beta transistors. | Huiting Chen, Frank Whiteside, Randall L. Geiger |
| 2001 | ISCAS | Modeling of random channel parameter variations in MOS transistors. | Mao-Feng Lan, Randall L. Geiger |
| 2001 | ISCAS | MOSGRAD-a tool for simulating the effects of systematic and random channel parameter variations. | Mao-Feng Lan, Randall L. Geiger |
| 2001 | ISCAS | Prototype implementation of a WWW based analog circuit design tool. | Mark Schlarmann, Randall L. Geiger |
| 2001 | ISCAS | A 2.5 Gbit/s CMOS PLL for data/clock recovery without frequency divider. | Yonghui Tang, Randall L. Geiger |
| 2001 | ISCAS | Fast-settling CMOS operational amplifiers with negative conductance voltage gain enhancement. | Jie Yan, Randall L. Geiger |
| 2000 | ISCAS | Gradient sensitivity reduction in current mirrors with non-rectangular layout structures. | Mao-Feng Lan, Randall L. Geiger |
| 1999 | ISCAS | A 2 GHz VCO with process and temperature compensation. | Huiting Chen, Edward Lee, Randall L. Geiger |
| 1999 | ISCAS | An asynchronous data recovery/retransmission technique with foreground DLL calibration. | S. Nagavarapu, J. Yan, Edward K. F. Lee, Randall L. Geiger |
| 1999 | ISCAS | A new multipath amplifier design technique for enhancing gain without sacrificing bandwidth. | Mark Schlarmann, Edward K. F. Lee, Randall L. Geiger |
| 1999 | ISCAS | A monolithic 1.25 Gbits/sec CMOS clock/data recovery circuit for fibre channel transceiver. | L. Wu, Huiting Chen, S. Nagavarapu, Randall L. Geiger, Edward Lee, W. Black |
| 1994 | ISCAS | MOS Active Attenuators for Analog ICs and their Applications to FInite Gain Amplifiers. | Joon-Yub Kim, Randall L. Geiger |
| 1994 | ISCAS | An Accurate and Matching-Free Threshold Voltage Extraction Scheme for MOS Transistors. | Chong-Gun Yu, Randall L. Geiger |
| 1993 | ISCAS | Digital correction for improved spectral response in signal generation systems. | George R. Spalding, Randall L. Geiger |
| 1993 | ISCAS | Very Low Voltage Operational Amplifiers Using Floating Gate MOS Transistor. | Chong-Gun Yu, Randall L. Geiger |