✦ LIBER ✦

A 0.35-μm CMOS frequency divider implemented with the waffle injection MOSFET

✍ Scribed by Sheng-Lyang Jang; Ching-Lun Cheng; Chia-Wei Chang; Miin-Horng Juang

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 381 KB
Volume: 53
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.26064

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✦ Synopsis

Abstract

This letter proposes a CMOS injection‐locked frequency divider (ILFD) fabricated in a 0.35‐μm CMOS process.The ILFD circuit is realized with a cross‐coupled CMOS LC‐tank oscillator, and the external injection is carried out through the gate of a waffle MOSFET. The self‐oscillating ILFD is injection‐locked by second‐/fourth‐harmonic input to obtain the division order of two/four. Measurement results show that at the supply voltage of 0.9 V and at the incident power of 0 dBm, the locking range is from the incident frequency 4.25 to 6.35 GHz in the divide‐by‐2 mode. The locking range is from the incident frequency 10.75 to 11.25 GHz in the divide‐by‐4 mode. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26064

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