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This paper presents the implementation of an active fiber optical-delay stabilization system in an optoelectronic oscillator. The primary use of the system is to stabilize optical point-to-point fiber links for synchronization purposes; however, the system can also be efficiently used as a stable optical delay line in an opto-electronic oscillator. By using a multipurpose optical delay stabilization...
This paper introduces a digital pulse width modulation technique for MEMS oven-control system. The proposed method generates digital, pulse width modulated signals from analog signals produced by a proportional-integral-derivative controller. This technique, therefore, provides good digital properties, such as better design scalability and higher power efficiency. These advantages are confirmed with...
We present a tunable flipflop-based frequency divider and a fully differential push-push VCO designed in a 200 GHz fT SiGe BiCMOS technology. A new technique for tuning the sensitivity of the divider in the frequency range of interest is presented. The chip works from 60 GHz up to 113 GHz. The VCO is based on a new topology which allows generating differential push-push outputs. The VCO shows a tuning...
An electromagnetically excited silicon nitride beam resonant pressure sensor is described and numerical modeling is carried out on the analysis of the sensitivity of pressure measurement and temperature drift. The proposed approach is based on measurement of resonant frequencies for two resonant beams located on a diaphragm inducing different axial stress under an applied pressure, the differential...
This paper presents a miniaturized 2.5GHz frequency source based on compensated BAW resonator with its integrated temperature molybdenum sensor assembled on the differential Colpitts oscillator. The presence of silicon dioxide layer having a positive temperature coefficient compared to other layers is used to reduce the resonator's drift. A demonstration oscillator achieves a frequency drift of 40...
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