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The characteristics of measuring converters with frequency output signal based on oscillistor effect in n-type germanium are described. We define the bounds of the linearity of static conversion characteristic. It has been found that the converters sensitivity increases at the temperature decrease. Methods of expanding of the conversion range are described. The results of the experimental studies...
Temperature variations significantly affect the performance and reliability of RF integrated circuits, which necessitates for thermal management in RF circuits. In this paper, an integrated analog temperature sensor (ATS) which operates with simple, low-cost one-point calibration is proposed. The temperature to voltage conversion is achieved in two steps i.e. temperature to frequency, followed by...
This work presents a digital over-temperature protector for FlexRay systems. A temperature sensor with a negative coefficient with respect to frequency is realized on silicon. A frequency to digital converter (FDC) is used to convert the frequency into a digital code to represent the sensed temperature. An experimental prototype was implemented using a typical 0.35 µm CMOS process. The post-layout-extracted...
An advanced automated calibration technique for a trimming inaccuracy (calibration tolerance) of low-cost quartz resonators that are using in the Universal Sensors and Transducers Interface (USTI) integrated circuits for precision frequency (period)-to-digital conversion is described in the paper. It was shown that such technique can be used also for reducing an error due to a quartz crystal aging...
We report a compact two-dimensional accelerometer based upon a simple fiber cantilever constructed from a short length of multicore optical fiber. Two-axis measurement is demonstrated up to 3 kHz. Differential measurement between fiber Bragg gratings written in the multicore fiber provides temperature-insensitive measurements.
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