A low-power, low phase-noise 1.9GHz RF oscillator is presented. The oscillator utilizes a single thin-film bulk acoustic wave resonator and was implemented in a standard 0.18μm CMOS process. This paper addresses design issues involved in co-designing micromachined resonators with CMOS circuitry to realize ultra-low power RF transceiver components. The oscillator achieves a phase noise performan...

A simple technique is presented to realize a digitally programmable voltage mode quadrature oscillator using second generation current conveyors. Firstly, the current conveyors based tunable quadrature oscillator is realised. A digital block is introduced in the realized tunable quadrature oscillator so that the oscillator can be controlled digitally. The realized Digitally Programmable Quadrat...

in this paper, a new analytical approach has been presented for solving strongly nonlinear oscillator problems. iteration perturbation method leads us to high accurate solution. two different high nonlinear examples are also presented to show the application and accuracy of the presented method. the results are compared with analytical methods and with the numerical solution using runge-kutta m...

We have created a computational model of the timing network that paces the heartbeat of the medicinal leech, Hirudo medicinalis. The rhythmic activity of this network originates from two segmental oscillators located in the third and fourth midbody ganglia. In the intact nerve cord, these segmental oscillators are mutually entrained to the same cycle period. Although experiments have shown that...

Existence of breather (spatially localized, time periodic, oscillatory) solutions of the topo-logical discrete sine-Gordon (TDSG) system, in the regime of weak coupling, is proved. The novelty of this result is that, unlike the systems previously considered in studies of discrete breathers, the TDSG system does not decouple into independent oscillator units in the weak coupling limit. The resul...

In recent years, there has been an increase in the use of challenge course programs and activities, including low-element challenge courses, as interventions in clinical treatment facilities, as well as a treatment approach for adolescents with behavioral and social problems (Johnson, 1992), an approach to encourage personal growth (Herbert, 1996; Nassar McMillan & Cashwell, 1997), and as a met...

Greek prenuclear accents show a sharp rise that starts near the onset of the accented syllable and peaks on the following unaccented syllable (if there is one). We have presented elsewhere evidence for analyzing these accents as consisting of a L(ow) and a H(igh) target. In a first experiment exploring the factors that affect the location of the H target, we discovered that in words with antepe...