✦ LIBER ✦

CMOS injection-locked frequency divider with two series-LC resonators

✍ Scribed by Sheng-Lyang Jang; Chih-Chieh Shih; Cheng-Chen Liu; Miin-Horng Juang

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 995 KB
Volume: 53
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.25716

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✦ Synopsis

Abstract

A fourth order resonator has been implemented to design an injection locked frequency divider (ILFD) implemented in a 0.18‐μm CMOS process. The ILFD is realized with a cross‐coupled nMOS LC‐tank oscillator with a direct injection MOSFET and two series‐LC resonators. At the supply voltage of 0.8 V, the low‐band free‐running tuning frequency is from 2.7 to 3.18 GHz. One excited high‐band frequency band is measured, and the free‐running tuning frequency is from 4.07 to 4.13 GHz. The divide‐by‐2 operational locking range is from 3.4 to 9.4 GHz, and the divide‐by‐4 operational locking range is from 10.5 (15.95) GHz to 13.6 (16.9) GHz for the low‐(high)‐frequency band. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:290–293, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25716

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