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Most Recent International Conference Papers
- [Invited Paper] M. Chahardori, M. A. Hoque, M. A. Mokri, and D. Heo, “A Compact Mm-Wave Multi-Band VCO Based on Triple-Mode Resonator for 5G and Beyond,” accepted to the IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), presented in September, 2022.
- S. Mohapatra, C. C. Lin, M. Chahardori, E. Ghaderi, M. A. Hoque, S. Gupta, and D. 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), presented in June, 2022.
- M. A. Hoque, M. Chahardori, M. A. Mokri, S. Mohapatra, D. Kar, and D. Heo “A Low Phase Noise 28 GHz VCO Using Transformer-based Q-enhanced Active Impedance Converter,” accepted to the IEEE International Microwave Symposium (IMS), to be presented in June, 2022.
- J. W. Kunzler, K. F. Warnick, M. Chahardori, and D. Heo, “Wideband RFI cancellation using true time delays and a Hadamard projection operator,” accepted to the IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, to be presented in Dec., 2021.
- C. C. Lin, C. Puglisi, V. Boljanovic, S. Mohapatra, H. Yan, E. Ghaderi, D. Heo, D. Cabric, and S. Gupta, “A 4-Element 800MHz-BW 29mW True-Time-Delay Spatial Signal Processor Enabling Fast Beam-Training with Data Communications,” ESSCIRC 2021 – IEEE 47th European Solid State Circuits Conference (ESSCIRC), 2021, pp. 287-290, doi: 10.1109/ESSCIRC53450.2021.9567822.
- M. Chahardori, M. A. Hoque, and D. Heo, “Reconfigurable Low Phase Noise Four-Core Triple-Band VCO based on Multi-mode Resonator for 5G and Beyond”, accepted in Semiconductor Research Corporation (SRC) Techcon, Sept. 2021.
- M. A. Hoque, and D. Heo, “A Triple-band Low Phase Noise K/Ka-Band VCO with a New Dual-path Inductor for 5G and SATCOM Applications,” accepted in Semiconductor Research Corporation (SRC) Techcon, Sept. 2020.
- [Student Paper Competition Finalist] M. A. Hoque, M. Chahardori, P. Agarwal, M. A. Mokri and D. Heo, “Octave Frequency Range Triple-band Low Phase Noise K/Ka-Band VCO with a New Dual-path Inductor,” 2020 IEEE/MTT-S International Microwave Symposium (IMS), Los Angeles, CA, USA, 2020, pp. 341-344, doi: 10.1109/IMS30576.2020.9223770.
- P. Agarwal, M. Chahardori and D. Heo, “An X-band LC VCO Using a New Boosted Active Capacitor With 53 % Tuning Range and -202.4 dBc/Hz FoMT,” 2020 IEEE/MTT-S International Microwave Symposium (IMS), Los Angeles, CA, USA, 2020, pp. 357-360, doi: 10.1109/IMS30576.2020.9223827.
- V. Boljanovic, H. Yan, E. Ghaderi, D. Heo, S. Gupta and D. Cabric, “Design of Millimeter-Wave Single-Shot Beam Training for True-Time-Delay Array,” 2020 IEEE 21st International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Atlanta, GA, USA, 2020, pp. 1-5, doi: 10.1109/SPAWC48557.2020.9154233.
- Z. Zhou, N. Tang, B. Nguyen, W. Hong, P. P. Pande and D. Heo, “A Wide Output Voltage Range Single-Input-Multi-Output Hybrid DC-DC Converter Achieving 87.5% Peak Efficiency With a Fast Response Time and Low Cross Regulation for DVFS Applications,” 2020 IEEE Custom Integrated Circuits Conference (CICC), 2020, pp. 1-4, doi: 10.1109/CICC48029.2020.9075892.
- Zhiyuan Zhou, Syrine Belakaria, Aryan Deshwal, Wookpyo Hong, Jana Doppa, Partha Pratim Pande, and Deukhyoun Heo, “Design of Multi-Output Switched-Capacitor Voltage Regulator via Machine Learning,” 2020 Design, Automation & Test in Europe Conference & Exhibition (DATE), 2020, pp. 502-507, doi: 10.23919/DATE48585.2020.9116413.
- S. Gopal, D. Heo, and T. Karnik, “Hierarchical Design Methodology and Optimization for Proximity Communication based Contactless 3D ThruChip Interface,” in 2019 International 3D Systems Integration Conference (3DIC), Sendai, Japan, 2019, pp. 1-6, doi: 10.1109/3DIC48104.2019.9058859.
- S. N. Ali, M. A. 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,” in IEEE MTT-S Int. Microw. Symp. Dig., Boston, MA, USA, Jun. 2019, 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 Link for Contactless 3D IC,” in 2019 IEEE MTT-S Int. Microw. Symp. Dig., Boston, MA, USA, Jun. 2019, 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,” in 2019 IEEE MTT-S Int. Microw. Symp. Dig., Boston, MA, USA, Jun. 2019, doi: 10.1109/MWSYM.2019.8700900.
- Bai Nguyen, Nghia Tang, Zhiyuan Zhou, Wookpyo Hong, Deukhyoun Heo, Yangyang Tang, Philipp Zhang, “A Sub-1V Analog-Assisted Inverter-Based Digital Low-Dropout Regulator with a Fast Response Time at 25mA/100ps and 99.4% Current Efficiency”, in IEEE Custom Integrated Circuits Conference – (CICC), Austin, TX, USA, 2019, doi: 10.1109/CICC.2019.8780173.
- 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” in IEEE International Solid – State Circuits Conference – (ISSCC), San Francisco, CA, 2019, pp. 152-154. doi: 10.1109/ISSCC.2019.8662530.
- [Best Paper Candidate] S. Gopal, P. Agarwal, S. N. Ali, J. Baylon and D. Heo, “An Echo-Canceller-Iess NFIC- TSV Hybrid 3D Interconnect for Simultaneous Bidirectional Vertical Communication,” 2018 IEEE/MTT-S International Microwave Symposium – IMS, Philadelphia, PA, 2018, pp. 663-666.doi: 10.1109/MWSYM.2018.8439430.
- J. Baylon, S. Gopal, L. Renaud, S. N. Ali and D. Heo, “A Low Power Active-Passive Dual Gm-boosted W-band Oscillator for Wireless Networ -on-Chip Applications,” 2018 IEEE/MTT-S International Microwave Symposium – IMS, Philadelphia, PA, 2018, pp. 1427-1430. doi: 10.1109/MWSYM.2018.8439862.
- S. Gopal, P. Agarwal, J. Baylon, S. N. Ali, M. A. Hoque and D. Heo, “A Scalable Multi-Channel CMOS Mixer-Cell Ring Oscillator Dot Product Circuit for High-Throughput Computing” in IEEE International Symposium on Circuits and Systems-Late Breaking News (ISCAS), Italy, 27-30 May 2018.
- S. N. Ali, P. Agarwal, J. Baylon, S. Gopal, L. Renaud and D. Heo, “A 28GHz 41%-PAE linear CMOS power amplifier using a transformer-based AM-PM distortion-correction technique for 5G phased arrays,” 2018 IEEE International Solid – State Circuits Conference – (ISSCC), San Francisco, CA, 2018, pp. 406-408. doi: 10.1109/ISSCC.2018.8310356.
- [Invited] S. Das, S. Gopal, D. Heo and P. P. Pande, “Energy-efficient and robust 3D NoCs with contactless vertical links (Invited paper),” 2017 IEEE/ACM International Conference on Computer-Aided Design (ICCAD), Irvine, CA, 2017, pp. 1-6. doi: 10.1109/ICCAD.2017.8501894.
- [Best Paper Candidate] S. Gopal, S. Das, P. P. Pande and D. Heo, “Energy and Area Efficient Near Field Inductive Coupling: A Case study on 3D NoC” in 11th IEEE/ACM International Symposium on Networks-on-Chip (NoCS), Seoul, South Korea, 19-20 October 2017.
- B. Nguyen, Z. Zhou, W. Hong, and D. Heo, “Low-Noise Multiple-Output Switched-Capacitor Power Management System for System-on-Chip,” Semiconductor Research Corporation (SRC) Techcon, Sept. 2017.
- [Invited] P. Agarwal, S. N. Ali, and D. Heo, “Reconfigurable Phased-Array Design Techniques for 5G and Beyond Applications,” in IEEE International Symposium on Radio Frequency Integration Technology (RFIT), Seoul, Korea, Sept. 2017.
- S. N. Ali, P. Agarwal, S. Mirabbasi and D. Heo, “A 42–46.4% PAE continuous class-F power amplifier with Cgd neutralization at 26–34 GHz in 65 nm CMOS for 5G applications,” 2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Honolulu, HI, USA, 2017, pp. 212-215. doi: 10.1109/RFIC.2017.7969055
- S. N. Ali, P. Agarwal and D. Heo, “Reconfigurable High Efficiency Power Amplifier with Tunable Coupling Coefficient Based Transformer for 5G Applications”, in IEEE MTT-S International Microwave Symposium (IMS), Honolulu, Hawaii, USA, 4-9 June 2017. [accepted]
- J. Baylon, S. N. Ali, P. Agarwal, S. Gopal, D. Heo, “Current Reuse Triple-Band Signal Source for Multi-Band Wireless Network-on-Chip” in IEEE MTT-S International Microwave Symposium (IMS), Honolulu, Hawaii, USA, 4-9 June 2017 [accepted].
- T. N. Nguyen, P. Agarwal and D. Heo, “A 5.8 GHz and -192.9 dBc/Hz FoMT CMOS class-B capacitively-coupled VCO with Gm-enhancement,” in IEEE MTT-S International Microwave Symposium (IMS), vol., no., pp.1-4, 22-27 May 2016.
- S. P. Sah, P. Agarwal and D. Heo, “A low power sub-harmonic injection locked 2×2 mm-wave beamforming receiver array,” IEEE International Symposium on Circuits and Systems (ISCAS), Montreal, QC, pp. 1558-1561, May 22-27 2016.
- P. Agarwal, L. Renaud, J. Baylon, D. Majumdar, D. Heo, and C. Schlegel “2.45 GHz, 100 Mbps BPSK-DSSS Transmitter for Interference-Robust Wireless Neuroprosthetic Networks”, IEEE European Microwave Conference (EuMC), vol., no., pp. 877-880, 7-10 Sep. 2015.
- [Best Paper Award, Second position] P. Agarwal, P. P. Pande, D. Heo, “25.3 GHz, 4.1 mW VCO with 34.8% Tuning Range Using a Switched Substrate-Shield Inductor”, in IEEE MTT-S International Microwave Symposium (IMS), vol., no., pp.1-4, 17-22 May 2015.
- X. Yu, D. Heo, P. P. Pande, S. Mirabbasi, “A 60-GHz LNA with feed-forward bandwidth extension technique for wireless NoC application”, Proc. Eur. Microw. Integr. Circuits Conf. (EuMIC), 9th, vol., no., pp. 1-4, 6-7 Oct 2014.
- S. P. Sah, Y. You, P. Agarwal, and D. Heo, “A 8-40 GHz, 8 mW LNA with 27 dB Peak Gain and 5.2 dB NF for Multiband Applications,” IEEE European Microwave Conference (EuMC), 9th , vol., no., pp.182-185, 6-7 Oct. 2014..
- S. P. Sah, and D. Heo, “A Low Power K- and Ka-band Receiver for Beamforming Applications,” in Proc. European Radar Conference (EuRAD), 2014.
- S. P. Sah, S. Mirabbasi and D. Heo, “An Inductively Gm Enhanced 34 GHz VCO with Gain Linearization and Switched Transformer Tuning”, in IEEE MTT-S International Microwave Symposium (IMS), vol., no., pp.1-4, 1-6 June 2014.
- S. P. Sah and D. Heo, “ A 12 GHz IF Bandwidth Low Power 5-17 GHz V-band Positive Transformer-Feedback Down-Conversion Mixer,” in IEEE MTT-S International Microwave Symposium (IMS), vol., no., pp.1-4, 1-6 June 2014.
- P. Agarwal, J. Baylon, S.P. Sah, D. Majumdar, D. Heo, C. Schlegel, “A 330 µW, Gm-boosted VCO with −205 dB FoMT and 35 % tuning range using class-b biasing,” in Microwave Symposium (IMS), IEEE MTT-S International , vol., no., pp.1-4, 1-6 June 2014.
- P. Agarwal, S. P. Sah, D. Heo, “A 4.8 mW, 4.4 dB NF, Wideband LNA Using Positively Coupled Transformer for V-band Applications,” IEEE MTT-S International Microwave Symposium (IMS), International , vol., no., pp.1-3, 1-6 June 2014.
- S. P. Sah and D. Heo, “An 8th Sub-Harmonic Injection Locked V-band VCO for Low Power LO Routing in mm-Wave Beamformers,” in IEEE Radio Frequency Integrated Circuits Symposium, vol., no., pp.177-180, 1-3 June 2014
- S. P. Sah, P. Agarwal, D. Heo, “A low power 8th sub-harmonic injection locked receiver for mm-Wave beamforming applications,” in IEEE Radio Frequency Integrated Circuits Symposium, vol., no., pp.401-404, 1-3 June 2014
- P. Agarwal, S. P. Sah, and D. Heo, “A Low Leakage Pull-Down Network for PLL with 6.7 dB Improvement in Reference Spur”, Asia Pacific Microwave Conference (APMC) 2013.
- S. P. Sah and D. Heo, ” An Ultra-Wideband 15-35 GHz Phase-Shifter for Beamforming Applications “,in Proc. of The European Microwave Integrated Circuits Conference (EuMIC) 2013, pp. 264-267. Oct 2013.
- Y. You, S. Zhu, K. F. Warnick, S. P. Sah, and D. Heo, “A Low Phase Error X-band Eight-Channel SiGe PIN Diode Phased Array Receiver,” The European Microwave Integrated Circuits Conference (EuMIC), 2013, pp. 268-271. Oct 2013.
- S. Zhu, Y. You, K. F. Warnick, S. P. Sah and D. Heo, “An 8-channel Ku Band Transmitter Beamformer with Low Gain/Phase Imbalance between Channels”, European Microwave Conference (EuMW), 2013, pp. 947-950. Oct 2013.
- S. P. Sah and D. Heo, “A Low Power K− and Ka−band Receiver for Beamforming Applications”, In Proc. of Semiconductor Research Corporation TECHCON 2013, Sept. 2013.
- S. P. Sah, X. Yu, P. Agarwal, Hooman Rashtian, P. P. Pande, D. Heo and Shahriar Mirabbasi, “A V-band Wide Locking Range Injection Locked CMOS VCO for Wireless Network-on-Chip Receiver “, in Proc. IEEE MTT-S International Microwave Symposium Digest (MTT) 2013.
- 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 “, ISCAS 2013, pp.1119,1122, 19-23 May 2013. doi: 10.1109/ISCAS.2013.6572047.
- Sujay Deb, Kevin Chang, Xinmin Yu, Amlan Ganguly, Partha Pande, Deuk Heo and Benjamin Belzer, “CMOS Compatible Many-Core NoC Architectures with Multi-Channel Millimeter-Wave Wireless Links,” Proceedings of ACM Great Lake Symposium on VLSI (GLSVLSI), pp. 165-170, May 2012
- Sujay Deb, Kevin Chang, Amlan Ganguly, Xinmin Yu, Christof Teuscher, Partha Pande, Deukhyoun Heo and Benjamin Belzer, “Design of an Efficient NoC Architecture using Millimeter-Wave Wireless Links,” Proceedings of IEEE International Symposium on Quality Electronic Design (ISQED), pp. 165-172, 19th -21st, March 2012
- P. Liu, S. P. Sah, J. Jung, P. Upadhyaya, D. Heo, “Load Independent Bulk-Coupled Low Power Quadrature LC VCO”, International Microwave Symposium 2012, Montreal, pp. 1-3, June 2012.
- A. O. Mikul, S. Zhu, P. Sun, Y. You, S. P. Sah, D. Heo, “Low Phase Imbalance Broadband Attenuator based on SiGe PIN Diode”, International Microwave Symposium 2012, Montreal, pp. 1-3, June 2012.
- Deb, S.; Chang, K.; Ganguly, A.; Xinmin Yu; Teuscher, C.; Pande, P.; Deukhyoun Heo; Belzer, B.; , “Design of an efficient NoC architecture using millimeter-wave wireless links,”Quality Electronic Design (ISQED), 2012 13th International Symposium on , vol., no., pp.165-172, 19-21 March 2012
- X. Yu, S. P. Sah, S. Deb, P. P. Pande, B. Belzer, D. Heo, “A Wideband Body-Enabled Millimeter-Wave Transceiver for Wireless Network-on-Chip” IEEE MWSCAS 2011,pp.1-4
- X. Yu, S. P. Sah, D. Heo, “A 750 MHz – 1 GHz Low-Power Transceiver for Wireless Sensor Applications”, CSSCIT 2011
- J. Jung, P. Upadyaya, P. Liu, D. Heo, “ Compact sub-1mW low phase noise CMOS LC-VCO based on power reduction technique,” IEEE MTT-S International Microwave Symposium Digest (MTT), pp. 1-4, 2011
- P. Liu, P. Upadhyaya, J. Jung, T. Luo, Y. J. Chen, D. Heo, “Low phase noise load independent switched LC VCO,” IEEE MTT-S International Microwave Symposium Digest (MTT), pp. 280-283, 2010.
- Deukhyoun Heo, K. F. Warnick, “Integrated eight element Ku band transmit/receive beamformer chipset for low-cost commercial phased array antennas,” IEEE International Symposium on Phased Array Systems and Technology (ARRAY), pp. 653-659, 2010.
- Xinmin Yu, S. P. Sah, B. Belzer, D. Heo, “Performance evaluation and receiver front-end design for on-chip millimeter-wave wireless interconnect,” International Green Computing Conference, pp. 555-560, 2010.
- Pinping Sun, Peng Liu, P. Upadhyaya, DongHo Jeong, Deukhyoun Heo, E. Mina, “Silicon-based PIN SPST RF switches for improved linearity,” IEEE MTT-S International Microwave Symposium Digest (MTT), pp. 948-951, 2010
- J. Jung, S. Zhu, P. Liu, L. Wang, T. Luo, Y. Chen, D. Heo, “Energy efficient 136 Mb/s OOK implantable transmitter for wireless brain computer interface,” IEEE MTT-S International Microwave Symposium Digest (MTT), 1604 – 1607, 2010.
- J. Asmussen, S. P. Sah, Yu Xinmin, D. Heo, “A wideband body biased low-noise amplifier,” International Conference on Green Circuits and Systems (ICGCS), pp. 687-690, 2010
- Jaeyoung Jung, Siqi Zhu, Peng Liu, Le Wang, Tang-Nian Luo, Yi-Jan Chen, Deukhyoun Heo, “Energy efficient 136 Mb/s OOK implantable transmitter for wireless brain computer interface,” IEEE MTT-S International Microwave Symposium Digest (MTT), pp. 1604-1607, 2010.
- Pinping Sun, Jaeyoung Jung, Youngsik Kim, Deukhyoun Heo, “An Ultra Low Power Analog Frequency Divider,” in the proceedings of IEEE MTT-S Int’l Microwave Symposium, pp. 1489 ~ 1492, June 2008.
- Yang Zhang, Peng Liu, Tang-Nian Luo, Yi-Jan Emery Chen, Deukhyoun Heo, “A Low-Voltage Low-Phase Noise Bottom-Series LC QVCO using Capacitor Tapping Technique,” in the proceedings of IEEE MTT-S Int’l Microwave Symposium, pp. 237 ~ 240, June 2008.
- Tang-Nian Luo, Yi-Jan Emery Chen, Deukhyoun Heo, “A V-band Wide Locking Range CMOS Frequency Divider,” in the proceedings of IEEE MTT-S Int’l Microwave Symposium, pp. 563 ~ 566, June 2008
- Yang Zhang, Peng Liu, Tang-Nian Luo, Yi-Jan Emery Chen, Deukhyoun Heo, “A Low-Phase-Noise LC QVCO with Bottom-Series Coupling and Capacitor Tapping,” in the proceedings of IEEE International Symposium on Circuits and Systems, pp. 1000 ~ 1003, May 2008.
- P. Upadhyaya, D. Heo, Y. E. Chen, “A 1.1V Low Phase Noise CMOS Quadrature LC VCO with 4-Way Center-tapped Inductor,” in the proceedings of IEEE MTT-S Int’l Microwave Symposium, pp. 847-850, June 2007.
- P. Upadhyaya, D. Heo, “A Novel Low Voltage and Low Power 0.18-µm Inductor-less CMOS Even-Harmonic Mixer,” in the proceedings of European Microwave Conference, pp. 1606-1609, Sept. 2006.
- Parag Upadhyaya, Deukhyoun Heo, Yi-Jan Emery Chen, “A 1.3V Low Phase Noise 2-GHz CMOS Quadrature LC VCO,” in the proceedings of European Microwave Integrated Circuits Conference, pp. 169-172, Sept. 2006.
- P. Sun, P. Upadhyaya, D. Heo, Y. E. Chen, “High Performance PIN Diode in 0.18um SiGe BiCMOS Process for Broadband Monolithic Control Circuits,” in the proceedings of European Microwave Integrated Circuit Conference, pp. 149-152, Sept. 2006.
- Yi-Jan Emery Chen, Shuen-Yin Bai, Tang-Nian Luo, Yueh-Hua Yu, Deukhyoun Heo, “A Wide Operation Range CMOS Frequency Divider for 60GHz Dual-Conversion Receiver,” in the proceedings of 2006 IEEE International RFIC Symposium, pp. 4, June 2006.
- Le Wang, Parag Upadhyaya, Pinping Sun, Deukhyoun Heo, “A 5.3GHz Low-Phase-Noise LC VCO With Harmonic Filtering Resistor,” in the proceedings of 2006 IEEE International Symposium on Circuits and Systems, pp. 4, May 2006.
- M. Rajashekharaiah, P. Upadhyaya, Deukhyoun Heo, “Enhanced Gm3 cancellation for linearity improvement in CMOS LNA,” in the proceedings of IEEE International Symposium on Circuits and Systems, pp. 4240-4243, May 2006.
- Tang Nian Luo, Shuen Yin Bai, Yi Jan Chen, Hsin Shu Chen, Deukhyoun Heo, “A 1-V CMOS VCO For 60-GHz Applications,” in the proceedings of 2005 Asia Pacific Microwave Conference (APMC2005), Suzhou, China, December 2005.
- P. Upadhyaya, M. Rajashekharaiah, D. Heo, D. Rector, Y. E. Chen, “Low Power and Low Phase Noise 5.7 GHz LC VCO in OOK Transmitter for Neurosensory Application,” in the proceedings of IEEE MTT-S International Microwave Symposium, pp. 1539-1542, June 2005.
- P. Upadhyaya, M. Rajashekharaiah, D. Heo, Y. E. Chen, “A High IIP2 Doubly Balanced Sub-Harmonic Mixer in 0.25-m CMOS for 5-GHz ISM Band Direct Conversion Receiver,” in the proceedings of IEEE International RFIC Symposium, pp. 175-178, June 2005.
- Chih-Yun Liu Yi-Jan Emery Chen Deukhyoun Heo, “Impact of Bias Schemes on Doherty Power Amplifiers,” in the proceedings of IEEE International Symposium on Circuits and Systems, vol. 1, pp. 212-215, May 2005.
- M. Rajashekharaiah, P. Upadhyaya, D.Heo, Y. E. Chen, “A 5GHz New Gain Controllable On-Chip Active Balun for ISM Band Applications,” in the proceedings of IEEE International Symposium on Circuits and Systems, vol. 5, pp. 5115-5118, May 2005.
- P. Upadhyaya, M. Rajashekharaiah, Y. Zhang, D. Heo, Y. E. Chen, “A 5 GHz Novel 0.18-um Inductor-less CMOS Sub-Harmonic Mixer,” in the proceedings of International Symposium on Information Processing in Sensor Networks, pp. 71-74, April 2005.
- P. Sun, L. Wang, P. Upadhyaya, D. Heo, “High Isolation 10 GHz to 20 GHz SPDT Switch Design using Novel Octagonal PIN Diode Structure,” in the proceedings of IEEE Workshop on Microelectronics and Electron Devices, pp. 38-41, April 2005.
- P. Upadhyaya, M. Rajashekharaiah, D. Heo, D. Rector, Y. E. Chen, “100 Mbps OOK Transmitter with Low Power and Low Phase Noise LC VCO for Neurosensory Application,” in the proceedings of IEEE Southeast Con., pp. 75-78, April 2005.
- Le Wang, Pinping Sun, Mallesh Rajashekharaiah, Deukhyoun Heo, C.L.Champion, G.S.Larue, “A 15-GHz Single-Pole Double-Throw Annular MOSFET Switch for space application,” in the proceedings of IEEE Workshop on Microelectronics and Electron Devices, pp.103-106, April 2005.
- M. Rajashekharaiah, P. Upadhyaya, D.Heo, Y. E. Chen, “A New 0.25um CMOS on-chip Active Balun with Gain Controllability for 5GHz DCR,” in the proceedings of IEEE Southeast Con, pp. 71-74, April 2005.
- Yi-Jan Emery Chen, Kai-Hong Wang, Tang-Nian Luo, Shuen-Yin Bai, Deukhyoun Heo, “Investigation of CMOS technology for 60-GHz applications,” in the proceedings of IEEE Southeast Con, pp. 92-95, April 2005.
- P. Upadhyaya, M. Rajashekharaiah, D. Heo, Y. E. Chen, “A New 5-GHz ISM Band CMOS Doubly Balanced Sub-Harmonic Mixer for Direct Conversion Receiver,” in the proceedings of IEEE European Conference on Wireless Technology, pp. 65-68, October 2004.
- M. Rajashekharaiah, P. Upadhyaya, D.Heo, Y. E. Chen, “A 5GHz LNA with New Gain Controllable On-Chip Active Balun for ISM Band Applications,” in the proceedings of International Conference on Solid-State and Integrated Circuits Technology, vol. 2, pp. 1252-1255, October 2004.
- P. Upadhyaya, M. Rajashekharaiah, D. Heo, Y. E. Chen, “A New 0.25-µm CMOS Doubly Balanced Sub-Harmonic Mixer for 5-GHz ISM Band Direct Conversion Receiver,” in the proceedings of International Conference on Solid-State and Integrated Circuits Technology, vol. 2, pp. 1295-1298, October 2004
- N. Srirattana, D. Heo, M.-H. Park, A. Raghavan, P. E. Allen, and J. Laskar, “A New Analytical Scalable Substrate Network Model for RF MOSFETs,” in the proceedings of IEEE MTT-S Int. Microwave Symposium, vol. 2, pp. 699-702, Dallas, TX., June 2004.
- M. Rajashekharaiah, P. Upadhyaya, D. Heo, “A compact 5.6 GHz low noise amplifier with new on-chip gain controllable active balun,” in the proceedings of IEEE Workshop on Microelectronics and Electron Devices, pp.131-132, April 2004.
- P. Upadhyaya, M. Rajashekharaiah, D. Heo, “A 5.6GHz CMOS Doubly Balanced Sub-Harmonic Mixer for Direct Conversion Receiver,” in the proceedings of IEEE Workshop on Microelectronics and Electron Devices, pp.129-130, April 2004.