We introduces a new method that can achieve the generation of Colpitts chaotic signal The system is based on virtual instrument platform and combined with MATLAB calculation to achieve the generation of Colpitts chaotic signal and making it analysis with autocorrelation and power spectrum at the same time. Signal channel output of chaotic signal was realized through USB-6009 acquisition module ...

Received: 13 Mar. 2012; Revised 25 Jul. 2012; Accepted 04 Aug. 2012 Received: April 8, 2012; Revised May 4, 2012; Accepted June 6, 2012 Abstract: Aiming at the problem of atmospheric humidity measurement, this paper proposes a method to measure dew point based on sensitive circuit for the first time. We use the quartz crystal in the Colpitts circuit as the humidity sensitive element. Since the ...

Memristors (abbreviation of memory and resistor), introduced as the fourth fundamental electrical circuit element, remember electric charge that flowed through it. These nonlinear elements are considered a class two terminal resistive devices offers lot possible applications in various areas. In this article, we review dynamical behaviour some circuits with memristors. Initially, show simple ca...

We consider the electronic structure of a shunt-fed Colpitts oscillator. This oscillator is a feedback circuit built with a single bipolar junction transistor which is responsible of the nonlinear behavior of the complete circuit. The interest of investigating the dynamics of this circuit is justified by its multiple potential applications in the field of engineering and also by the striking/tr...

The paper presents chaos synchronization in coupled delayed two-stage Colpitts circuits for the first time. Numerical simulation demonstrates and verifies the effectiveness of the proposed model. Furthermore, the spectrum analysis shows the potential utilization for UWB communications.

By introducing Colpitts oscillator as a chaotic system, this paper deals with back-stepping control method and investigates the restrictions and problems of the controller where non-existence of a suitable response in the presence of uncertainty is the most important problem to note. In this paper, the back-stepping sliding mode method is introduced as a robust method for controlling nonlinear ...

Compressive sensing uses simultaneous sensing and compression to provide an efficient image acquisition technique and it has been demonstrated in optical and electrical image sensors. To guarantee exact recovery from sparse measurements, specific sensing matrix, which satisfies the Restricted Isometry Property (RIP), should be well chosen. Toeplitz-structured chaotic sensing matrix constructed ...

The first fully integrated oven-controlled temperature compensation system with the transformer coupled Colpitts oscillator is developed by 65nm CMOS tech. This work achieves ±1.55ppm frequency stability over the 85C temperature range which can be used for the GPS application (<2ppm). An integrated heater in the FBAR chip consumes 14mW power at maximum. The temperature resolution of TDC is 150u...

In this work, two radio frequency (RF) voltagecontrolled oscillators (VCOs) are evaluated to determine feasibility for use in a high data rate wireless LAN. Designs are presented for a Colpitts oscillator and a differential L-C oscillator operating at 10GHz. The circuits are to be fabricated in a 3.3V 47GHz SiGe BiCMOS process, pushing the limits of the technology. Simulated phase noises of -95...