This paper describes methods of the behavioural analysis of nonlinear dynamic circuits and systems in electrical engineering. The investigation starts with the network analysis results in the set of state equations. The state equations undergo several numerical analysis algorithms described in this paper. The results of these analysis are qualitative and quantitative characterisations of the sy...

A 350μW MSK direct modulation transmitter and a 400μW OOK super-regenerative receiver (SRR) are implemented in 90nm CMOS technology. The transceiver tunes 24MHz in frequency steps smaller than 2kHz and is designed to meet the specifications of the Medical Implant Communications Service (MICS) standard in the 402–405MHz band. The transmitter meets MICS mask specifications with data rates up to 1...

As the world ecosystem comes under increasing duress from the effects of global warming, volatile organic compounds (and other air pollutants), oil spills, pesticides, stronger coastal storms, and more frequent tornadoes and forest fires, early warning of and effective response to micro, local, and regional ecological problems is critical. Capturing this data is an immense challenge requiring l...

The fundamental question of how much we can ultimately reduce the phase noise of a lumped, inductorless oscillator through careful design is addressed and it is shown that the fluctuation dissipation theorem of thermodynamics imposes a lower limit on the phase noise. An analytical formulation of this limit is presented and it is shown that the phase noise of ring oscillators with long-channel M...

A method for calculating phase noise based on a particle diffusion model in the phase plane is introduced. This approach allows for the derivation of closed-form solutions, which can be used to see the explicit dependencies of phase noise on circuit component values. The theory is applied to the Van der Pol and Colpitts oscillators, and comparisons to simulations show close matching. Introducti...

We present a slope-assisted BOTDA system based on the vector stimulated Brillouin scattering (SBS) and frequency-agile technique (FAT) for the wide-strain-range dynamic measurement. A dimensionless coefficient K defined as the ratio of Brillouin phase-shift to gain is employed to demodulate the strain of the fiber, and it is immune to the power fluctuation of pump pulse and has a linear relatio...

|Full Text: PDF (216 KB) 8. WiMax and Wi-Fi: Separate and Unequal Cherry, S.M. Spectrum, IEEE Volume 41, Issue 3, Date: March 2004, Pages: 1616 Digital Object Identifier 10.1109/MSPEC.2004.1270541 Abstract |Full Text: PDF (2525 KB) 9. What is Bluetooth? McDermott-Wells, P. Potentials, IEEE Volume 23, Issue 5, Date: Dec. 2004-Jan. 2005, Pages: 3335 Digital Object Identifier 10.1109/MP.2005.13689...