The El Niño-Southern Oscillation (ENSO) is an interannual phenomenon involved the tropical Pacific Ocean-atmosphere interactions. The oscillatory nature of ENSO requires both positive and negative ocean-atmosphere feedbacks. The positive feedback is dated back to Bjerknes' hypothesis in the 1960s, and different negative feedbacks have been proposed since the 1980s associated with the delayed os...

The effects of emitter degeneration on the oscillation frequency, output noise and tuning range of an emitter degenerated LC oscillator designed using bipolar transistors (BJT) is analyzed. Simulation results show increased oscillation frequency, tuning range and carrier-to-noise ratio (CNR). Design guidelines for emitter degenerated LC oscillators are also given.

A single-trim, highly accurate Colpitts-based frequency reference is presented. Our analysis shows that the Colpitts-topology outperforms cross-coupled LC -topology in terms of temperature stability. Measurements on prototypes a 0.13- ...

In this paper, we present an RIP module with the features of supporting multiple inductive sensors, no variable frequency LC oscillator, low power consumption, and automatic gain adjustment for each channel. Based on the method of inductance measurement without using a variable frequency LC oscillator, we further integrate pulse amplitude modulation and time division multiplexing scheme into a ...

We propose a scheme to obtain highly sensitive oscillators in coupled-resonator system with an exceptional point of degeneracy (EPD) and small instability. The oscillator the is realized by using two coupled resonators almost balanced small-signal gain loss, that saturates due nonlinear effects active component, resulting oscillation frequency very perturbation circuit. Two cases are investigat...

by Le Wang, M.S. Washington State University August 2006 Chair: Deukhyoun Heo This thesis presents a novel low power and low phase noise 0.18-μm CMOS LC voltage controlled oscillator(VCO) for 5 GHz Industrial Scientific Medical (ISM) band. Using a new harmonic filtering technique the phase noise of CMOS LC voltage-controlled oscillator (VCO) is lowered based on the loaded-Q improvement approach...