Integrated 2.4 GHz CMOS quadrature VCO with symmetrical spiral inductors and differential varactors

被引：0
|
作者：
Chi, BY [1 ]
Shi, BX [1 ]
机构：
[1] Tsing Hua Univ, Inst Microelect, Beijing 100084, Peoples R China
来源：
2002 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-3 | 2002年
关键词：
D O I：
暂无
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 2.4 GHz CMOS quadrature VCO is presented. By using symmetrical Inductors and differential varactors, the circuit has been integrated into a single chip completely. The principles of this VCO are described. A prototype is fabricated in 0.25 um single-poly five-metal CMOS standard digital process. The measured results show that the proposed VCO could generate quadrature LO signals with a tuning range of more than 300 MHz and phase noise -104.33 dBc/Hz; at 600 KHz offsetO2.41 GHz (when only one port of differential outputs is measured). It consumes 21 mA when VDD=2.5 V (Including 8 mA output buffers). Die area is only 0.830.68 mm(2). This VCO could be used in many integrated wireless transceivers.
引用
收藏
页码：561 / 564
页数：4
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