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An inductorless CMOS quadrature oscillator continuously tuneable from 3.1 to 10.6 GHz
Author(s) -
Oliveira Luis Bica,
Snelling Erik T.,
Fernandes Jorge R.,
Silva Manuel M.
Publication year - 2012
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.718
Subject(s) - quadrature (astronomy) , cmos , electronic engineering , electrical engineering , computer science , physics , engineering
SUMMARY Modern RF front‐ends require wide tuning‐range oscillators with quadrature outputs. In this paper we present a two‐integrator quadrature oscillator, which covers the whole bandwidth of UWB applications. A circuit prototype in a 130 nm CMOS technology is continuously tuneable from 3.1 to 10.6 GHz. The circuit die area is less than 0.013mm 2 , leading to a figure‐of‐merit FOMA of −176.7dBc/Hz at the upper frequency. The supply voltage is 1.2 V, and the power consumption is 7 mW at the lower frequency and 13 mW at the upper frequency. Copyright © 2010 John Wiley & Sons, Ltd.
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