Hartley-VCO Using Linear OTA-based Active Inductor
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초록
An LC-tuned sinusoidal voltage-controlled oscillator (VCO) using temperature-stable linear operational transconductance amplifiers (OTAs) is presented. Its architecture is based on Hartley oscillator configuration, where the inductor is active one realized with two OTAs and a grounded capacitor. Two diode limiters are used for limiting amplitude. A prototype oscillator built with discrete components exhibits less than 3.1% nonlinearity in its current-to-frequency transfer characteristic from 1.99 MHz to 39.14 MHz and 220 ppm/ºC frequency stability to the temperature drift over 0 to 75 ºC. The total harmonic distortion (THD) is as low as 4.4 % for a specified frequency-tuning range. The simulated phase noise of the VCO is about -108.9 dBc/Hz at 1 MHz offset frequency in frequency range of 0.4 – 46.97 MHz and property of phase noise of VCO is better than colpitts-VCO.
Abstract
An LC-tuned sinusoidal voltage-controlled oscillator (VCO) using temperature-stable linear operational transconductance amplifiers (OTAs) is presented. Its architecture is based on Hartley oscillator configuration, where the inductor is active one realized with two OTAs and a grounded capacitor. Two diode limiters are used for limiting amplitude. A prototype oscillator built with discrete components exhibits less than 3.1% nonlinearity in its current-to-frequency transfer characteristic from 1.99 MHz to 39.14 MHz and 220 ppm/ºC frequency stability to the temperature drift over 0 to 75 ºC. The total harmonic distortion (THD) is as low as 4.4 % for a specified frequency-tuning range. The simulated phase noise of the VCO is about -108.9 dBc/Hz at 1 MHz offset frequency in frequency range of 0.4 – 46.97 MHz and property of phase noise of VCO is better than colpitts-VCO.
참고문헌 (9)
- W. -S. Chung., "Colpitts VCO Using Temperature-Stable Linear OTAs", IEICE Electron. Express, 10(13), pp.1~9 (2013)
- A. Jannesari., "Sinusoidal-Switched Serial-Coupled CMOS LC quadrature VCO", IEICE Electronics Express, 4(13), pp.423~429 (2007)
- J. Chang., "A Symmetrical 6-GHz fully integrated Cascode coupling CMOS LC quadrature VCO", IEEE Microw. Wireless Compon. Lett, 15(10), pp.670~672 (2005)
- H. Choi., "A Low-phase noise LC-QVCO in CMOS technology", IEEE Microw. Wireless Compon. Lett, 14(11), pp.540~542 (2004)
- H. Kim., "A LC-Tuned Sinusoidal VCOs Using OTA-C Active Inductors", ITC-CSCC, 2004(7), pp.3~6 (2004)
- H. Kim., "A LC-Tuned Sinusoidal VCO Using Temperature-Stable Linear OTAs", ITC-CSCC 2003 Proceedings, 26, pp.601~604 (2003)
- Prabir C. Maulik., "Frequency Tuning of Wide Tempe-rature Range CMOS LC VCOs", IEEE JOURNAL OF SOLID-STATE CIRCUITS, 46(9), pp.2033~2040 (2011)
- W. -S. Chung., "A temperature difference-to-frequency converter using resistance temperature detectors", IEEE Trans. Instrum. Meas., 39, pp.676~677 (1990)
- W-S Chung., "Semiconductor and devices", Journal of the Institute of Electronics Engineers of Korea, 44(7), pp.37~44 (2007)