Ring voltage controlled oscillator for high-speed PLL systems |
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Authors: | S A Bistritskii V I Klyukin E N Bormontov |
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Affiliation: | 1. Voronezh State University, Voronezh, Russia
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Abstract: | A circuit of a ring voltage controlled oscillator (VCO), which is to be used in high-speed phase-locked loop (PLL) systems integrated into programmable logic integrated circuits, is proposed. The maximum operating frequency of a VCO in 180 nm CMOS is shown by simulation to be able to reach 2 GHz in all operating conditions with the phase noise being ?99 dB/Hz and detuning frequency being 1 MHz. |
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