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This paper proposes a new approach to implement a multiphase sinusoidal oscillator by using loop-back of n-cascaded high-pass sections form. Two CMOS current-controlled current conveyors (CCCII) and a grounded capacitor are constructed as a current-mode high-pass section for each phase. The orthogonally of oscillate condition and frequency of oscillation are obtained with their electronically controllable...
In this paper a tunable four phase sinusoidal quadrature oscillator is realized using CMOS multi-output second generation current conveyors (MOCCIIs). The circuit uses only two CMOS MOCCII and provides four phase quadrature voltage outputs with equal magnitude at the oscillating frequency. The oscillator also exhibits independent frequency control. The proposed circuit is designed and verified using...
This paper presents a data pattern-tolerant adaptive equalizer using spectrum balancing method. In addition to a high-frequency boosting control loop, this equalizer has a corner frequency control loop to guarantee its adaptation accuracy for various data patterns and data rates. Measured results show that the jitter of the eye is reduced by maximum 37%. The chip fabrication is based on the 0.18μm...
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