Technique for flicker noise up-conversion suppression in differential LC oscillators

被引：9
|
作者：
Tchamov, Nikolay N. [1 ]
Tchamov, Nikolay T. [1 ]
机构：
[1] Tampere Univ Technol, Inst Commun Engn, RF ASIC Design Lab, FIN-33720 Tampere, Finland
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2007年 / 54卷 / 11期
关键词：
flicker noise; integrated oscillator; RF CMOS;
D O I：
10.1109/TCSII.2007.904135
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 novel technique for the suppression of the flicker noise up-conversion in a differential LC oscillator topology is proposed. Relaxation mechanism and tunable noise filtering of the relaxation thresholds provide simultaneous suppression of differential pair and bias transistor flicker noise contributions. The proposed technique is validated on a fully monolithic oscillator architecture and 0.35-mu m standard CMOS process by Cadence SpectreRF for the frequency range of 2.9-5.9 GHz. The phase noise improvement at 10 kHz offset versus a single-differential-pair LC oscillator is 6-15 dB across the tuning range.
引用
收藏
页码：959 / 963
页数：5
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