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Low power wide-locking range CMOS quadrature injection-locked frequency divider

✍ Scribed by Sheng-Lyang Jang; Chia-Wei Chang; Sheng-Ming Yang

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
406 KB
Volume
51
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

This letter presents a new low power and wide‐locking range divide‐by‐2 injection‐locked frequency divider (ILFD). The ILFD consists of a new 5.35 GHz quadrature voltage controlled oscillator (QVCO) and two NMOS switches, which are in parallel with the QVCO resonators for signal injection. The proposed CMOS ILFD has been implemented with the TSMC 0.18 μm CMOS technology and the core power consumption is 5.72 mW at the supply voltage of 0.8 V. The free‐running frequency of the QILFD is tunable from 5.24 to 5.55 GHz. At the input power of 0 dBm, the divide‐by‐2 locking range is from 8.2 to 13.3 GHz as the tuning voltage is biased at 0.8 V. The phase noise of the locked output spectrum is lower than that of free running ILFD in the divide‐by‐2 mode. The phase deviation of quadrature output is about 1.28°. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2420–2423, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24640

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