This paper gives the design of oscillator circuit using 0.18μm technology. The proposed oscillator has been designed using the active inductor topology. The Hartley oscillator technique has been implemented in the proposed circuit. The proposed oscillator circuit gives the oscillation frequency of 5GHz and the power consumption of the circuit is 11.599mW. The proposed circuit can be used for th...

In this paper, we explore general conditions for the oscillation based test of switched-capacitor biquad filter stages. Expressions describing the characteristics of a filter stage put into oscillation are derived and conditions for achieving oscillation by internal transformation of the filter stage are explored. Reconfiguration scheme based on the transformation of the biquad filter stage to ...

This article presents a current-mode quadrature oscillator using current controlled current conveyor transconductance amplifiers (CC-CCTAs) as active elements. The proposed circuit is realized from a lossy integrator and a lossy differentiator. The oscillation condition and oscillation frequency can be electronically controlled via input bias currents. The proposed oscillator can be applied to ...

In this study, an electronically tunable resistorless dual-mode quadrature sinusoidal oscillator, based on current controlled current conveyor transconductance amplifier (CCCCTA) and two grounded capacitors is presented. The proposed resistorless oscillator employs a single CCCCTA and two grounded capacitors and thus is well suited for integrated circuit implementation. The proposed circuit is ...

In this study, we investigate the circuit model that twenty hard oscillators with two LC resonators are coupled by inductors. We observe two kinds of waves by the change of initial states. First waves are changing phase states between two adjacent oscillators from in-phase to anti-phase or from antiphase to in-phase and continuously exist. We call this wave as “phase inversion waves”. Second wa...

We have investigated cooperative dynamics of an artificial stochastic resonant system, which is a recurrent ring connection of neuron-like signal transducers (NST) based on stochastic resonance (SR), using electronic circuit experiments. The ring showed quasi-periodic, tunable oscillation driven by only noise. An oscillation coherently amplified by noise demonstrated that SR may lead to unusual...

A phase detection circuit was developed to observe a synchrotron oscillation of the beam turn-by-turn at the Photon Factory Storage Ring (PF ring). A phase deviation from RF frequency was measured using the circuit connected to one of the button-type electrodes of the beam position monitor (BPM). A momentum deviation of the beam was simultaneously measured using a transverse beam position circu...

Anyone who have designed a capacitively tuned VFO/VCO with the wide tuning range (>1.5-2x) has noticed that the oscillation threshold changes substantially with the tuning frequency. The usual solution to the problem is a combination of: 1. the AGC circuit, most frequently via the amplifier bias that changes the amplifier conduction angle; 2. shunting the LC circuit with a damping resistor or b...

This paper proposes a globally passive but locally active memristor, which has three stable equilibrium points and two unstable points, exhibiting regions four regions. We find that when the memristor operates in local region, memristor-based second-order circuit with parallel capacitor or series inductor can produce periodic oscillation. Moreover, third-order energy storage elements, an induct...

New first order allpass filter (APF) in current mode, constructed from 2 CCCCTAs and grounded capacitor, is presented. The current gain and phase shift can be electronically /orthogonally controlled. Low input and high output impedances are achieved which make the circuit to be easily cascaded to the current-mode circuit without additional current buffers. The operation of the proposed filter h...