An explicit solution of the equation for the classical harmonic oscillator with smooth switching of the frequency has been found . A detailed analysis of a quantum harmonic oscillator with such frequency has been done on the base of the method of linear invariants. It has been shown that such oscillator possesses cofluctuant states, different from widely studied Glauber’s coherent and ”ideal” s...

A fully integrated CMOS RC oscillator is presented. The inverter-based. An adaptive body biasing(ABB) scheme proposed to regulate the trip point of decision inverter adaptively, thus alleviating frequency variation over PVT. To achieve low power consumption all components are in sub-threshold region. circuit designed a 55-nm process with an area 0.052 mm2. simulation result shows temperature se...

Two types of piezoelectric wafer active sensor (PWAS) oscillators, Colpitts-type PWAS oscillator and series-type PWAS oscillator, designed for in-vivo monitoring of capsule formation around soft tissue implants have been presented. Both of the oscillators were explored analytically and experimentally. Colpitts-type PWAS oscillator uses the inductive property of the PWAS in its resonant frequenc...

This paper represents a novel second harmonic power combining oscillator using mutually synchronized Gunn diodes embedded on slot line resonators. A both-sided MIC technology is adopted in the oscillator. The oscillator consists of Gunn diodes, slot line resonators and microstrip lines. By embedding Gunn diodes on slot line resonators, desired harmonic RF signal can be generated very easily. Th...

This paper proposes an ultra-low power CMOS random number generator (RNG), which is based on an oscillator-sampling architecture. The noisy oscillator consists of a dual-drain MOS transistor, a noise generator and a voltage control oscillator. The dual-drain MOS transistor can bring extra-noise to the drain current or the output voltage so that the jitter of the oscillator is much larger than t...

When a driven oscillator loses phase-locking to a master oscillator via a Hopf bifurcation, it enters a bounded-phase regime in which its average frequency is still equal to the master frequency, but its phase displays temporal oscillations. Here we characterize these two synchronization regimes in a laser experiment, by measuring the spectrum of the phase fluctuations across the bifurcation. W...

This paper presents our recent work in developing a system for transcription of polyphonic piano music. Our goal is to build a system that would automatically transcribe polyphonic piano music from the audio signal, transcribing note onsets and offsets. The system consists of three main stages: filtering, partial tracking and note extraction. The paper presents our partial tracking method based...

Conclusion: We have shown that amplifier saturation in a driven unlocked oscillator causes the inherent one-sided beat frequency spectrum to be converted into a two-sided beat frequency spectrum of asymmetric amplitude, but equal beat frequency separation. This can be of importance in injectionlocking oscillator design as it can affect the approach to the threshold-lock condition with large inj...