A 2.4GHz fully integrated CMOS VCO with direct FM/FSK modulation capability

被引：10
|
作者：
Choi, YB [1 ]
Teo, TH [1 ]
Yeoh, WG [1 ]
机构：
[1] Inst Microelect, Singapore, Singapore
来源：
2003 IEEE CONFERENCE ON ELECTRON DEVICES AND SOLID-STATE CIRCUITS | 2003年
关键词：
D O I：
10.1109/EDSSC.2003.1283509
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：
The design and implementation of a 2.4GHz fully Integrated VCO with direct FM/FSK modulation capability is presented. The VCO utilizes an accumulation mode MOS (aMOS) varactor as the major frequency tuning element. A tiny aMOS varactor of similar geometry is also incorporated in parallel for direct baseband modulation. Abrupt CV profile of aMOS varactor is linearized through direct coupling to the full-swing of the VCO tank circuit. Concept of this large-signal CV linearization Is fully elaborated. The VCO prototype has been fabricated in 0.35mum standard CMOS process. Measured at 3.0V supply, the VCO demonstrates 14% tuning range, 920KHz/V linear modulation gain, -103dBc/Hz phase noise at 100KHz offset frequency with core current drawn of approximately 7mA.
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页码：175 / 178
页数：4
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