A fully integrated spiral-LC CMOS VCO set with prescaler for GSM and DCS-1800 systems

Proceedings of CICC 97 - Custom Integrated Circuits Conference Pub Date : 1997-05-05 DOI:10.1109/CICC.1997.606654

J. Craninckx, M. Steyaert, Hiroyuki Miyakawa, Kard. Mercierlaan

引用次数: 106

Abstract

A set of two VCOs is developed in a 0.4 /spl mu/m CMOS process, using a fully integrated spiral inductor with symmetrical octagonal shape in the resonance LC-tank. One VCO operates at a 900 MHz center frequency, and the other at 1.8 GHz, both achieving the required phase noise spec and tuning range for the GSM and DCS-1800 system. The phase noise equals -108 dBc/Hz at 100 kHz offset for the 900 MHz version and -113 dBc/Hz at 200 kHz for the 1.8 GHz version. The power consumption is 9 and 11 mW. An eight-modulus prescaler operates together with both VCOs.

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一个完全集成的螺旋lc CMOS压控振荡器设置GSM和DCS-1800系统的预分频器

以0.4 /spl mu/m的CMOS工艺，在谐振LC-tank中采用对称八角形的全集成螺旋电感，开发了一组两个vco。一个VCO工作在900 MHz的中心频率，另一个工作在1.8 GHz，两者都达到GSM和DCS-1800系统所需的相位噪声规格和调谐范围。900mhz版本在100khz偏移时相位噪声为-108 dBc/Hz, 1.8 GHz版本在200khz偏移时相位噪声为-113 dBc/Hz。功率消耗为9和11兆瓦。一个8模预加频器与两个vco一起工作。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of CICC 97 - Custom Integrated Circuits Conference

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