Active Inductor with Feedback Resistor Based Voltage Controlled Oscillator Design for Wireless Applications

Omar Faruqe, Md. Tawfiq Amin


This paper presents active inductor based VCO design for wireless applications based on analysis of active inductor models (Weng-Kuo Cascode active inductor & Liang Regular Cascode active inductor) with feedback resistor technique. Embedment of feedback resistor results in the increment of inductance as well as the quality factor whereas the values are 125.6@2.4GHz (Liang) and 98.7@3.4GHz (Weng- Kuo). The Weng-Kuo active inductor based VCO shows a tuning frequency of 1.765GHz ~2.430GHz (31.7%), while consuming a power of 2.60 mW and phase noise of -84.15 dBc/Hz@1MHz offset. On the other hand, Liang active inductor based VCO shows a frequency range of 1.897GHz ~2.522GHz (28.28%), while consuming a power of 1.40 mW and phase noise of -80.79 dBc/Hz@1MHz offset. Comparing Figure-of-Merit (FoM), power consumption, output power and stability in performance, designed active inductor based VCOs outperform with the state-of-the-art.

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A. D. Berny and A. M. Niknejad and R. G. Meyer, "A 1.8-GHz LC VCO With 1.3-GHz Tuning Range and Digital Amplitude Calibration," IEEE JOURNAL OF SOLID-STATE CIRCUITS, vol. 40, no. 4, pp. 909-917, Aprill 2005.

Namrata Prasad, R. S. Gamad and C. B. Kushwah, "Design of a 2.2-4.0 GHz Low Phase Noise and Low Power LC VCO," (IJCNS) International Journal of Computer and Network Security, vol. 1, no. 3, pp. 15-18, December 2009.

R. M. Weng and M. Y. Sie and C. Y. Liu, "A Low Power CMOS VCO for IEEE 802.11a Applications," in 2007 IEEE International Workshop on Radio-Frequency Integration Technology, Singapore, 2007, pp. 244-246.

S. Diao and Y. Wang and C. Wang and F. Lin and C. H. Heng, "VCO Design for Low-Power, High-Efficiency Transmitter Applications," in 2014 IEEE International Symposium on Radio-Frequency Integration Technology, Hefei, China, 2014, pp. 1-4.

V. Unnikrishnan and M. Vesterbacka and A. Alvandpour, "VCO-Based ADCs for IoT Applications," in 2016 International Symposium on Integrated Circuits (ISIC), Singapore, 2016, pp. 1-4.

M. T. Amin, "On the selection of passive elements for low phase noise LC tank VCO in 65 nm process," 2016 3rd International Conference on Electrical Engineering and Information Communication Technology (ICEEICT), Dhaka, 2016, pp. 1-5.

V. Macaitis and R. Navickas, "CMOS technology based LC VCO review," in 2015 Open Conference of Electrical, Electronic and Information Sciences (eStream), Vilnius, Lithuania, 2015, pp. 1-4.

J. Laskar and R. Mukhopadhyay and C. H. Lee, "Active Inductor-Based Oscillator: A Promising Candidate for Low-Cost Low-Power Multi-Standard Signal Generation," in 2007 IEEE Radio and Wireless Symposium, Long Beach, CA, USA, 2007, pp. 31-34.

J. T. Yang, S. K. Hsieh and P. J. Tsai, "A Wide Tuning Range Voltage-Controlled Oscillator with Active Inductors for Bluetooth Applications," in CSS'10 Proceedings of the 4th international conference on Circuits, systems and signals, Corfu Island, Greece, 2010, pp. 39-42.

R. M. Weng and R. C. Kuo, "An ω0-Q Tunable CMOS Active Inductor for RF Bandpass Filters," in 2007 International Symposium on Signals, Systems and Electronics, Montreal, QC, Canada, 2007, pp. 571-574.

K. Manetakis and S. M. Park and A. Payne and S. Setty and A. Thanachayanont and C. Toumazou, "Wideband CMOS analog cells for video and wireless communications," in Proceedings of Third International Conference on Electronics, Circuits, and Systems, Rodos, Greece, Greece, 1996, pp. 227-230.

K. H. LIANG, C. C. HO, C. W. KUO and Y. J. CHAN, "CMOS RF Band-Pass Filter Design Using the High Quality Active Inductor," IEICE TRANSACTIONS on Electronics, vol. E88-C, no. 12, pp. 2372-2376, Dec. 2005.

M. Haase and V. Subramanian and Tao Zhang and A. Hamidian, "Comparison of CMOS VCO Topologies," in 6th Conference on Ph.D. Research in Microelectronics Electronics, Berlin, Germany, 2010, pp. 1-4.

J. Jalil, M. B. I. Reaz, M. A. M. Ali1 and T. G. Chang, "A Low Power 3-Stage Voltage-Controlled Ring Oscillator in 0.18 μm CMOS Process for Active RFID Transponder," ELEKTRONIKA IR ELEKTROTECHNIKA, vol. 19, no. 8, pp. 69-72, 2013.

T.I. Ahrens and T.H. Lee, "A 1.4-GHz 3-mW CMOS LC low phase noise VCO using tapped bond wire inductances," in 1998 International Symposium on Low Power Electronics and Design, Monterey, 1998, pp. 16-19.

H. B.i Kiaa, A. K. A’aina and I. Groutb, "Wide tuning-range CMOS VCO based on a tunable active inductor," International Journal of Electronics, vol. 101, no. 1, pp. 88-97, December 2014.

N. C. Shirazi, E. Abiri and R. Hamzehyan, "A 5.5 GHz Voltage Control Oscillator (VCO) with a Differential Tunable Active and Passive Inductor," International Journal of Information and Electronics Engineering, vol. 3, no. 5, pp. 493-497, September 2013.

A. Saberkari and S. Seifollahi, "Wide tuning range CMOS Colpitts VCO based on tunable active inductor," Majlesi Journal of Telecommunication Devices, vol. 1, no. 1, pp. 11-15, March 2012.

G. Szczepkowski and G. Baldwin and R. Farrell, "Wideband 0.18 um CMOS VCO using active inductor with negative resistance," in 2007 18th European Conference on Circuit Theory and Design, Seville, Spain, 2007, pp. 990-993.

R. Mukhopadhyay and Yunseo Park and P. Sen and N. Srirattana and Jongsoo Lee and Chang-Ho Lee and S. Nuttinck and A. Joseph and J. D. Cressler and J. Laskar, "Reconfigurable RFICs in Si-Based Technologies for a Compact Intelligent RF Front-End," IEEE Transactions on Microwave Theory and Techniques, vol. 53, no. 1, pp. 81-93, January 2005.


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