A self-referenced VCO-based temperature sensor with reduced supply sensitivity is presented. The proposed sensor converts temperature information to frequency and then into digital bits. A novel sensing technique is proposed in which temperature information is acquired by evaluating the ratio of the output frequencies of two ring oscillators, designed to have different temperature sensitivities...

................................................................................... pg. 04 Chapter 1 – Introduction ................................................................. pg. 04 Chapter 2 – Background ................................................................. pg. 06 Chapter 3 – Voltage Controlled Oscillator ............................................. pg. 08 LC Oscillator ......

This paper presents a temperature compensation voltage controlled oscillator (VCO) based on Cross-Coupled pair and Colpitts structures which is suitable for military fields. Also, two inductors have been used for increasing the negative conductance. By using this method, start-up condition has been improved. Two varactors and a simple capacitor bank are applied for covering a wide tunning range...

In this paper we introduce a CMOS low voltage/low power (LV/LP) voltage controlled oscillator (VCO). It includes a simple V-I converter, a current controlled ring oscillator based on new differential delay cells, and a source-coupled differential pair to convert differential signal to single-ended signal. The V-I converter is implemented as a source follower type, exhibiting excellent linearity...

Introduction A key circuit used in modern communication systems is the voltage controlled oscillator (VCO). The VCO's output is an AC waveform whose frequency is dependent upon the input voltage. In today's wireless communication systems, a greater maximum frequency range is required by VCOs. With respect to the digital phones that use these circuits, low power consumption, small size and low f...

This work develops a broadband quadrature voltage-controlled oscillator (QVCO) for digital video broadcasting (DVB) tuner applications. The QVCO is mainly based on a balanced voltage-controlled oscillator (VCO), which is a combination of two single-ended VCO. Two active ports and two resonant tanks balance the phase of outputs and also increase the operating range. Experimental results show tha...

A recent experimental demonstration of a parametric magnetization oscillation excited by applying microwave voltage to ferromagnetic metal will be applicable not only new switching method but also bio-inspired computing. It should be, however, noted that phase the is uniquely locked, related fact frequency twice value oscillation. There are two possible phases in state, and which realized depen...