A design of multi-bit multi-phase VCO based ADC is presented in this paper. Time-domain quantization is done to extract the benefit from continuous scale down of technology Three stage current starved ring VCO is implemented using single ended delay cell configuration. A different method is used to increase the linearity of VCO and to increase the resolution of ADC in feed forward architecture,...

A fully integrated X-Band quadrature VCO is presented. The VCO is implemented using transformer-coupled resonator in 0.18 μm CMOS technology, in which two VCOs are coupled by direct current modulation method to generate I-Q signals. The VCO is realized employing the drain-gate transformer feedback configuration proposed here. This allows VCO to use the quality factor enhancement in coupled reso...

A wide bandwidth, high sample rate 3 order continuous-time ΔΣ modulator using VCO-based integrators is presented. Non-idealities caused by VCOs at the modulator frontend are addressed using both circuitand architecture-level techniques. Fabricated in 65nm CMOS, the prototype modulator operates at 1.28GS/s and achieves a dynamic range of 75dB, SNR of 71dB in 50MHz bandwidth, while consuming 38mW...

We evaluated the effects of pressure loading produced by gradual aortic occlusion on left ventricular (LV) myocardial contractility by assessing changes in the slope of the LV end-systolic force-diameter (Fes-Des) relation. Eleven adult mongrel dogs were prepared with ultrasonic crystals for measuring LV diameter and a micromanometer for measuring LV pressure. Preload was decreased by vena cava...

Food manufacturers are interested in developing emulsion-based products into nutritional foods by using beneficial oils, such as fish oil and virgin coconut oil (VCO). In this study, the physicochemical properties of a VCO oil-in-water emulsion was investigated and compared to other commercial oil-in-water emulsion products (C1, C2, C3, and C4). C3 exhibited the smallest droplet size of 3.25 µm...

BACKGROUND Ventilatory efficiency, assessed by the slope of minute ventilation (VE) versus carbon dioxide production (VCO(2)), is a powerful prognostic marker in patients with chronic heart failure. We hypothesized that VE/VCO(2) slope would be more accurate than the current listing criteria for heart transplantation (HTx) in identifying patients likely to derive a survival benefit from this in...

This thesis presents a backgate coupled QVCO with current reused structure, and complementary cross-coupled differential Colpitts VCO and QVCO. The formally proposed QVCO not only dissipates significantly lower power but also improves 1/ƒ close-in phase noise, compared to the conventional QVCO. For verification of the suggested idea, the proposed QVCO designed for 2 GHz operation based on a 0.1...

A 1.2V 5GHz low-cost voltage-controlled oscillator (VCO) with active common mode feedback has been implemented in a CMOS/RF 90nm technology for a robust I/Q generation using a frequency divider-by-2 (DIV2). As the input common mode of the DIV2 affects critically its performance, a calibration method to correct the output common mode of the VCO has been proposed and validated through post-layout...

The business of the Bulowattang village women farmer group is a that makes herbal oil or known as VCO. VCO products have many benefits in terms health and beauty. Therefore, this able to compete with other develop rapidly future. According results research, using canvas model, it has displayed comprehensive activities, visible from each model elements described all activities vco Village womens...

This paper presents a hybrid CMOS-CNFET voltage controlled oscillator (VCO) with low power dissipation and linear response over a wide control voltage range. The hybrid circuit is based on PTM 32nm low power CMOS devices and 32nm CNFET devices with different threshold voltages. The VCO frequency and power dissipation are investigated for CNFET parameters such as number of nano-tubes, gate oxide...