[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.4218/etrij.11.0110.0209

Wide-Band Fine-Resolution DCO with an Active Inductor and Three-Step Coarse Tuning Loop

Pu, Young-Gun (Department of Electronic Engineering, Konkuk University)
Park, An-Soo (Department of Electronic Engineering, Konkuk University)
Park, Joon-Sung (Department of Electronic Engineering, Konkuk University)
Moon, Yeon-Kug (Department of Biomicrosystem Technology, Korea University)
Kim, Su-Ki (Department of Electronics Engineering, Korea University)
Lee, Kang-Yoon (Department of Electronic Engineering, Konkuk University)

Publication Information

ETRI Journal / v.33, no.2, 2011 , pp. 201-209 More about this Journal

Abstract

This paper presents a wide-band fine-resolution digitally controlled oscillator (DCO) with an active inductor using an automatic three-step coarse and gain tuning loop. To control the frequency of the DCO, the transconductance of the active inductor is tuned digitally. To cover the wide tuning range, a three-step coarse tuning scheme is used. In addition, the DCO gain needs to be calibrated digitally to compensate for gain variations. The DCO tuning range is 58% at 2.4 GHz, and the power consumption is 6.6 mW from a 1.2 V supply voltage. An effective frequency resolution is 0.14 kHz. The phase noise of the DCO output at 2.4 GHz is -120.67 dBc/Hz at 1 MHz offset.

Keywords

Wide tuning range; active inductor; automatic three-step coarse and gain tuning loop; fine-resolution; digitally controlled oscillator (DCO);

Citations & Related Records

Times Cited By Web Of Science : 1 (Related Records In Web of Science)
Times Cited By SCOPUS : 1

Reference
Cited By SCOPUS

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