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$0.13{\mu}m$ CMOS Quadrature VCO for X-band Application  

Park, Myung-Chul (Department of Electronics and Communications Engineering, Kwang-woon University)
Jung, Seung-Hwan (Department of Electronics and Communications Engineering, Kwang-woon University)
Eo, Yun-Seong (Department of Electronics and Communications Engineering, Kwang-woon University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.49, no.8, 2012 , pp. 41-46 More about this Journal
Abstract
A quadrature voltage controlled oscillator(QVCO) for X-band is presented in this paper. The QVCO has fabricated in Charted $0.13{\mu}m$ CMOS process. The QVCO consists of two cross-coupled differential VCO and two differential buffers. The QVCO is controlled by 4 bit of capacitor bank and control voltage of varactor. To have a linear quality factor of varactors, voltage biases of varactors are difference. The QVCO generates frequency tuning range from 6.591 GHz to 8.012 GHz. The phase noise is -101.04 dBc/Hz at 1MHz Offset when output frequency is 7.150 GHz. The supply voltage is 1.5 V and core current 6.5-8.5 mA.
Keywords
voltage-controlled oscillator; X-band; Quadrature VCO(QVCO); 0.13um; CMOS;
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