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

被引：49

作者：

Craninckx, J

Steyaert, M

Miyakawa, H

机构：

来源：

PROCEEDINGS OF THE IEEE 1997 CUSTOM INTEGRATED CIRCUITS CONFERENCE | 1997年

关键词：

D O I：

10.1109/CICC.1997.606654

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A set of two VCOs is developed in a 0.4-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.

引用

页码：403 / 406

页数：4