Objective: Literature has confirmed the pathogenic role of cadmium (Cd) and its exposure in the induction of dyslipidemia implicated in the development and increasing incidence of cardiovascular diseases. The current study explored whether polyphenolics isolated from virgin coconut oil (VCO) prevent Cd-induced dyslipidemia and investigate the underlying mechanism of action, in rats. Materials a...

The voltage controlled oscillator (VCO) is a critical sub-block in communications transceivers. The role of the VCO in a transceiver and the VCO requirements are first reviewed. The necessity of GHz VCOs and the driving factors towards the monolithic integration of the VCO are examined. VCO design techniques are outlined and design trade-offs are explored. The performance of VCOs in different i...

The recent rapid growth in demand for wireless communications has been a strong motivation for designing more highly integrated RF ICs like low-noise amplifiers (LNAs), upand down-frequency converters, voltagecontrolled oscillators (VCOs), and frequency synthesizers into a single die with low power consumption and cost, while meeting performance requirements for wireless communications systems....

This paper presents the modeling and design consideration of a time-based ADC architecture that uses VCOs in a high-linearity, 2-order noise-shaping delta-sigma ADC. Instead of driving the VCO by a continuous analog signal, which suffers from the nonlinearity problem of the VCO gain, the VCO is driven in an intrinsically linear way, by a time-domain PWM signal. The two discrete levels of the PW...

This paper presents a fully integrated 5.4-GHz CMOS Voltage-controlled Oscillator (VCO) with a low phase noise and ultra linear VCO gain (Kvco) in 0.35-μm SiGe (Silicon Germanium) BiCMOS technology. In order to increase the linearity of the VCO, a resonant circuit is proposed that consists of four parallel p-n junction varactor pairs. The VCO operate at a bias current of 3.13 mA and a supply vo...