Wide-locking range ÷3 active-inductor injection-locked frequency divider using the push–push oscillator

✍ Scribed by Chia-Wei Chang; Sheng-Lyang Jang; Chao-Wei Hsieh

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 460 KB
• Volume: 53
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.26426

✦ Synopsis

Abstract

A new wide locking range active‐inductor divide‐by‐3 injection‐locked frequency divider (ILFD) using a standard 0.18‐μm CMOS process is presented.The push–push ILFD circuit is realized with a push–push cross‐coupled n‐core MOS LC‐tank oscillator. The core power consumption of the ILFD core is 7.41 mW. The divider's free‐running frequency is tunable from 1.39 to 3.18 GHz by tuning the varactor's control bias, and at the incident power of 0 dBm the maximum locking range is 2.9 GHz (43.6%), from the incident frequency 5.2 to 8.1 GHz. The operation range is 5.9 GHz (80.27%), from 4.4 to 10.3 GHz. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2771–2773, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26426