A 1.25GHz monolithic CMOS PLL clock synthesis unit was designed for data communications. The monolithic PLL consists of a ring oscillator, divider, phase/frequency detector, charge pump and on-chip loop filter. The voltage controlled oscillator incorporates a quadrature output ring structure with sub-feedback loop embedded to speed up the circuit. The design accommodates process, supply voltage...

This article presents new current-mode oscillator circuits using CDTAs which is designed from block diagram. The proposed circuits consist of two CDTAs and two grounded capacitors. The condition of oscillation and the frequency of oscillation can be adjusted by electronic method. The circuits have high output impedance and use only grounded capacitors without any external resistor which is very...

Title ofprogram: TRIATOM Method of solution A basis is constructed as a product of radial (either Morse Catalogue number: AALO oscillator-like or spherical oscillator) functions and associated Legendre polynomials for the bending coordinate, with rotaProgram obtainable from: CPC Program Library, Queen’s Unition matrices carrying the rotational motion. A secular matrix versity of Belfast, N. Ire...

A phase-locked clock and data recovery circuit incorporates a multiphase LC oscillator and a quarter-rate bang-bang phase detector. The oscillator is based on differential excitation of a closed-loop transmission line at evenly spaced points, providing half-quadrature phases. The phase detector employs eight flip-flops to sample the input every 12.5 ps, detecting data transitions while retiming...

The main aim of the paper is to present the analytical solution of the Belavkin quantum filtering equation for damped harmonic oscillator being initially in the squeezed coherent state for diffusion observation with complex white noise. The comparison of the a priori and a posteriori mean value of the optical quadrature operators and the photon number operator is given.

Optical frequency combs (OFCs), based on mode-locked lasers (MLLs), have attracted considerable attention in many fields over recent years. Among the applications of OFCs, one of the most challenging works is the extraction of a highly stable microwave with low phase noise. Many synchronisation schemes have been exploited to synchronise an electronic oscillator with the pulse train from a MLL, ...

We present experiments and theory of a constant flow-driven microfluidic oscillator with widely tunable oscillation periods. This oscillator converts two constant input-flows from a syringe pump into an alternating, periodic output-flow with oscillation periods that can be adjusted to between 0.3 s to 4.1 h by tuning an external membrane capacitor. This capacitor allows multiple adjustable peri...

The double balanced mixer scheme in-phase signal input and double-quadrature Local Oscillator is suggested for application on IQ direct conversion receivers. LO leakage influence on DC component and BER of the digital signal is shown. A model of the system is designed which is illustrating the improvement of the receiver sensitivity in case of using the suggested scheme.

Abstract We study synchronization of a quantum van der Pol oscillator with harmonic drive and demonstrate that can be enhanced by performing continuous homodyne measurement on an additional bath linearly coupled to the applying feedback control oscillator. The phase coherence is increased reducing fluctuations via measurement, whereas backaction inevitably induces around phase-locking point. pr...