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A 0.35 μm CMOS divide-by-2 quadrature injection-locked frequency divider based on voltage–current feedback topology

✍ Scribed by Sheng-Lyang Jang; Cheng-Chen Liu; Ren-Kai Yang; Chih-Chieh Shih; Chia-Wei Chang; Hsiu-An Yeh

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
845 KB
Volume
50
Category
Article
ISSN
0026-2714

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✦ Synopsis

This paper presents a new divide-by-2 quadrature injection-locked frequency divider (QILFD). The QILFD consists of a new transformer-coupled quadrature voltage controlled oscillator (QVCO) with the voltagecurrent feedback technique and two NMOS switches, which are in parallel with the QVCO resonators for signal injection. The proposed CMOS QILFD has been implemented with the TSMC 0.35 lm CMOS technology and the core power consumption is 16.52 mW at the supply voltage of 2.2 V. The free-running frequency of the QILFD is tunable from 2.85 GHz to 3.07 GHz. At the input power of 0 dBm, the divide-by-2 operation range is from 5.48 GHz to 6.48 GHz. The phase deviation of free running quadrature output is about 0.53°.

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