Qadeer Ahmad Khan
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Publications

Journals

  1. S. J. Kim, R. K. Nandwana, Q. Khan, R. Pilawa-Podgurski, and P. K. Hanumolu, “A 4-phase 30-70 MHz switching frequency buck converter using a time-based compensator,” IEEE J. Solid-State Circuits, vol.50, no.12, pp.2814-2824, Dec. 2015.

  2. S. J. Kim, Q. Khan, M. Talegaonkar, A. Elshazly, A. Rao, N. Griesert, G. Winter, W. McIntyre, and P. K. Hanumolu, “High frequency buck converter design using time-based control techniques,” IEEE J. Solid-State Circuits,vol. 50, no. 4, pp. 990-1001, Apr. 2015.

  3. S. Rao. Q. Khan, S. Bang, D. Swank, A. Rao, W. McIntyre, P.K. Hanumolu, “A 1.2-A Buck-Boost LED Driver With On-Chip Error Averaged SenseFET-Based Current Sensing Technique,” IEEE Journal of Solid-State Circuits, Volume: 46, Issue: 12, pp 2772- 2783, Dec. 2011.

Conferences

  1. S. J. Kim; R. K. Nandwana, Q. Khan, R. Pilawa-Podgurski, P. K. Hanumolu, “A 1.8V 30-to-70MHz 87% Peak Efficiency 0.32mm2 4-Phase Time-Based Buck Converter Consuming 3uA/MHz Quiescent Current in 65nm CMOS, ” 2015 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), San Francisco, 22-26 Feb. 2015.

  2. Q. Khan, S. J. Kim; M. Talegaonkar, A. Elshazly, A. Rao, N. Griesert, G. Winter, W. McIntyre and P. K. Hanumolu, “A 10-25MHz, 600mA buck converter using time-based PID compensator with 2uA/MHz quiescent current, 94% peak efficiency, and 1MHz BW,” VSLI Symp., June 2014, Honolulu.

  3. Q. Khan, A. Elshazly, S. Rao,R. Inti and P. K. Hanumolu, “A 900mA 93% Efficient 50uA Quiescent Current Fixed Frequency Hysteretic Buck Converter Using a Highly Digital Hybrid Voltage- and Current-mode Control,” VSLI Symp., June 2012, Honolulu.

  4. Q. Khan, S. Rao, D. Swank, A. Rao, W. McIntyre, S. Bang, P.K. Hanumolu, “A 3.3V 500mA Digital Buck-Boost Converter with 92% Peak Efficiency Using Constant ON/OFF Time Delta-Sigma Fractional-N Control,” 37th European Solid-State Circuits Conference (ESSCIRC), 12-16 Sept. 2011, Helsinki, Finland.

  5. S. Rao. Q. Khan, S. Bang, D. Swank, A. Rao, W. McIntyre, P.K. Hanumolu, “A 1.2A buck-boost LED driver with 13% efficiency improvement using error-averaged SenseFET-based current sensing,” 2011 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC), San Francisco, 20-24 Feb. 2011.

  6. S. Bang, D. Swank, A. Rao, W. McIntyre, Q. Khan, P.K. Hanumolu, “A 1.2A 2MHz Tri-Mode Buck-Boost LED Driver With Feed-Forward Duty Cycle Correction,” IEEE Custom Integrated Circuit Conference (CICC-2010), San Jose, California. September 2010.

  7. K. Jayaraman, Q. Khan, B. Chi, W. Beattie, Z. Wang, P. Chiang, “A Self-Healing 2.4GHz LNA with On-Chip S11S21 MeasurementCalibration for In-Situ PVT Compensation,” Radio Frequency Integrated Circuits (RFIC) Symposium, Anaheim, CA, May 2010.

  8. Q. Khan, G. K. Siddhartha, “A Sequence Independent Power-on-Reset Circuit for Multi-Voltage Integrated Systems, 2006 IEEE International Symposium on Circuits and Systems (ISCAS-2006),” Mar, 2006, Greece.

  9. Q. Khan, G. K. Siddhartha, D. Tripathi, S. K. Wadhwa, K. Misri, “Techniques for on-chip Process, Voltage and Temperature Detection and Compensation,” 19th International Conference on VLSI Design, Jan. 2006, India.

  10. Q. Khan, S. K. Wadhwa, K. Misri, “A single Supply Level Shifter for Multi-Voltage Systems,” 19th International Conference on VLSI Design Jan. 2006, India.

  11. S. K. Wadhwa, Q. Khan, K. Misri, D. Muhury, “Digital Clock Frequency Doubler,” IEEE International SoC Conference, Sep. 25-28, 2005, Washington DC.

  12. Q. Khan, S. K. Wadhwa, K. Misri, “A tunable gm-C filter with low variation across process, voltage and temperature, ” 17th International Conference on VLSI Design, Mumbai, India, Jan, 2004, pp. 539-544.

  13. Q. Khan, D. Dutta, “A Programmable CMOS Bandgap Voltage Reference Circuit using Current Conveyor,” 10th IEEE International Conference on Electronics, Circuits and Systems - ICECS 2003, UAE, Dec. 2003, pp. 8-11, vol.1.

  14. Q. Khan, S. Wadhwa, K. Misri, “Low Power Startup Circuits for Voltage and Current Reference with zero steady state current,” International Symposium on Low Power Electronics and Design (ISLPED), Seoul, Korea, August 2003, pp. 184-188.

  15. Q. Khan, S. Wadhwa, K. Misri, “A Low Voltage Switched-Capacitor Current Reference Circuit with low dependence on Process, Voltage and Temperature,” 16th International Conference on VLSI Design, New Delhi, India, Jan, 2003, pp. 504-506.

  16. D. Dutta, Q. Khan, S. Banerjee, “Design of Continuous-Time Filter for Hearing Aid application using Current Conveyors,” 9th IEEE International Conference on Electronics, Circuits and Systems - ICECS 2002, Croatia, pp. 169-172, vol.1

  17. Q. Khan, D. Dutta, “Optimized Realization of Kerwin-Huelsman-Newcomb biquadratic filter using Current Conveyors,” International Conference on Communication, Computers and Devices (ICCCD-2000) held at Indian Institute of Technology (IIT), Kharagpur. (Dec 2000).

Web Articles

  1. Q. Khan, S. Bang, “Energy Harvesting for Self Powered Wearable Health Monitoring System,” EE Times (http:www.eetimes.com), April 2009. [Link]

  2. Q. Khan, S. K. Wadhwa, K. Misri, “Reducing system complexity by using a single-supply logic-level shifter,” EE Times (http:www.eetimes.com), July 2008. [Link]

Patents

  1. M. Bansal, Q. Khan, C. Shi, Average current mode control of multi-phase switching power converters, US 9,442,140, Sep. 13, 2016.

  2. Q. Khan, S. Dhar, J. Zazzera, T. Sutton, Circuits and Methods for Driving Resonant Actuators, US 9,344,022, May 17, 2016.

  3. Q. Khan, S. Wadhwa, D. Tripathi, G.K. Sidhartha, K. Misri, PVT Variation Detection and Compensation Circuit, US 7495465, Feb. 24, 2009.

  4. D. Tripathi, G.K. Sidhartha, Q. Khan, K. Misri, S. Wadhwa, US 7446592, PVT Variation Detection and Compensation Circuit, Nov. 4, 2008.

  5. Q. Khan, G.K. Sidhartha, Sequence-independent Power-on Reset for Multi-Voltage Circuits, US 7432748, Oct. 7, 2008.

  6. D. Tripathi, J. Banerjee, Q. Khan, Differential Receiver Circuit, US 7414462, Aug. 19, 2008.

  7. S. Gupta, Q. Khan, Miller Capacitance Tolerant Buffer Element, US 7400172, Jul. 15, 2008.

  8. Q. Khan, H. Fukazawa, T. Nandurkar, Charge Pump Circuit for High Side Drive Circuit and Driver Driving Voltage Circuit, US 7388422, Jun. 17, 2008.

  9. G. K. Sidhartha, Q. Khan, D. Tripathi, S. Wadhwa, K. Misri, PVT Variation Detection and Compensation Circuit, US 7388419, Jun. 17, 2008.

  10. Q. Khan, D. Tripathi, Transmission Line Driver Circuit, US 7292073, Nov. 6, 2007.

  11. D. Tripathi, Q. Khan, K. Misri, Transmission Line Driver, US 7187197, Mar. 6, 2007.

  12. S. Wadhwa, Q. Khan, K. Misri, D. Muhury, Digital Clock Frequency Doubler, US 7132863, Nov. 7, 2006.

  13. Q. Khan, D. Tripathi, K. Misri, High Voltage Level Converter Using Low Voltage Devices, US 7102410, Sep. 5, 2006.

  14. Q. Khan, S. Wadhwa, K. Misri, Bandgap Reference Circuit, US 7084698, Aug. 1, 2006.

  15. Q. Khan, S. Wadhwa, K. Misri, Bidirectional Level Shifter, US 7061299, Jun, 13, 2006.

  16. Q. Khan, S. Wadhwa, K. Misri, Single Supply Level Shifter, US 7009424, Mar. 7, 2006.

  17. S. Wadhwa, Q. Khan, K. Misri, Switched Capacitor Current Reference Circuit, US 6784725, Aug. 31, 2004