Active-inductor-capacitor tank colpitts injection-locked frequency divider

被引:2
|
作者
Jang, S. -L. [1 ]
Liu, C. -C. [1 ]
机构
[1] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan
关键词
CMOS; injection-locked frequency divider; Colpitts oscillator; active inductor; wide locking range;
D O I
10.1002/mop.23650
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
This article presents a wide-locking range injection-locked frequency divider (ILFD), using a tunable active inductor (TAI), which is used to extend the locking range and to reduce die area. The CMOS ILFD is based on a new Colpitts voltage-controlled oscillator (CVCO) with TAI-C tank and was fabricated in the 0.18-mu m IP6M CMOS technology. The ILFD is performed by adding injection MOSFETs between the differential outputs of the CVCO. At the supply voltage of 1.9 V, the free-running ILFD tuning range is from 2.25 GHz to 1.26 GHz, whereas the timing bias of active inductor is tuned from 0.88 V to 1.04 V. At the incident power of 0 dBm, the operation-locking range is from the incident frequency 1.25-5.85 GHz. The phase noise of the ILFD can track with the injection source. (C) 2008 Wiley Periodicals, Inc.
引用
收藏
页码:2376 / 2379
页数:4
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