Spintronic oscillators are nanodevices that are serious candidates for CMOS integration due to their compactness and easy frequency tunability. For a crystal oscillator to work, there must exist a feedback path with properly What practical circuits do is design such that we have a phase-shift of 180. A double balanced down conversion oscillator mixer using 90 nm CMOS technology is proposed in a...

In this paper, an intuitive analysis of a phase noise reduction technique is done, and then a modified structure is proposed to achieve higher phase noise reduction than the original one. This method reduces the impact of noise sources on the phase noise by decreasing closed-loop gain in zero-crossings points and moving this high closed-loop gain to the non-zero-crossings points. This reduction...

The Matsuoka oscillator has been used to control various robots that perform rhythmic movements. The oscillator-driven control system usually takes a feedback structure. While the oscillator actuates some part of a controlled object, some state variable of the object is fed back to the oscillator. An important property of this control scheme is that the oscillator comes to drive the object at i...

In this research, a new explanation and design crystal oscillator based on injection locking phenomenon is proposed. The crystal oscillator is viewed as a regular oscillator whereas is ac small input signal is its forced function. In this work, a crystal is considered to be a very small sinusoidal signal generator. To guarantee that the injection locking phenomenon is occurred the frequency of ...

We consider the interaction dynamics of a classical oscillator and quantum two-level system for different pure-dephasing Hamiltonians type $\widehat{H}(q,p)=H_C(q,p)\boldsymbol{1}+H_I(q,p)\widehat\sigma_z$. This systems represents severe challenge popular hybrid quantum-classical descriptions. For example, in case common Ehrenfest model, density evolution is shown to decouple entirely from dyna...

the prediction of the joint angle position, especially during tremor bursts, can be useful for detecting, tracking, and forecasting tremors. thus, this research proposes a new model for predicting the wrist joint position during rhythmic bursts and inter‑burst intervals. since a tremor is an approximately rhythmic and roughly sinusoidal movement, neural oscillators have been selected to underli...

many procedures suggest for reduction of responses of riser to vortex induced vibrations (viv). natural frequencies of marine risers is an important parameter that can affect the responses of riser to viv. change of riser properties such as top tension and bending stiffness can alter natural frequencies. in this study effects of riser specifications on the responses and fatigue damage of marine...

Understanding a simple crystal oscillator transmitter circuit The transistor in common emitter configuration contributes -180 deg phase shift between base. Write short notes on (i) RC Oscillator (ii) Wien bridge Oscillator (iii) Crystal It consists of a conventional single transistor amplifier and a RC phase shift network. The wien-bridge oscillator is the standard oscillator circuit for all fr...

The synchronized oscillator composed of the plural CMOS ring oscillators is interesting for improving the performances of the oscillators. Several different circuits using the CMOS ring oscillators are discussed in this report. These are the tetrahedral oscillator, ORIGAMI oscillator, precise delay generator, braided connected oscillator, and the newly proposed oscillator embedded the pincer mo...