this paper presents a design of an uwb downconversion integrated cmos resistive ring mixer with linear voltage regulator (lvr), to supply required biasing voltages for the mixer section. the designed mixer circuit has been optimized for using in heart rate extraction system with microwave doppler radar at 2.4ghz frequency. this mixer needs 2 dc bias voltages equal to 0.5 and 1 volts for its bes...

Heterodyne strategies can be used to characterize thermal coupling in integrated circuits when the electrical bandwidth of the dissipating circuit is beyond the bandwidth of the thermal coupling mechanism. From the characterization of the thermal coupling, two possible applications are described: extraction of characteristics of the dissipating circuit (the determination of the center frequency...

We develop an axiomatic approach of vector field interpolation, which is useful as a feature extraction preprocessing step. Two operators will be singled out: the curvature operator, appearing in the total variation minimisation for image restoration and inpainting/disocclusion, and the Absolutely Minimizing Lipschitz Extension (AMLE), already known as a robust and coherent scalar image interpo...

Spike sorting is an important processing step in various neuroscientific and clinical studies. An on-chip spikesorting DSP must provide data-rate reduction while maintaining a power density much less than 800 μW/mm. Most existing designs either provide only spike detection for multi-channel processing, or they provide detection and feature extraction only for a single channel. We demonstrate a ...

This paper presents a spike sorting method using a simplified feature set with a nonparametric clustering algorithm. The proposed feature extraction algorithm is efficient and has been implemented with a custom integrated circuit chip interfaced with the PC. The proposed clustering algorithm performs nonparametric clustering. It defines an energy function to characterize the compactness of the ...

Thermally induced stresses play a very important role in controlling the structural reliability of microchip packages. In order to evaluate the magnitude of the warpage of measured objects caused by such stresses, the shadow moiré technique was suggested, where how the moiré fringes are extracted is the key feature. In this work, an improved filtering algorithm based on a nonlinear diffusion eq...

The paper considers the architecture and the main steps of development of a neural network based system for diagnosis of soft faults in analog electronic circuits. The definition of faults of interest, selection of an optimal set of measurements, feature extraction, the construction of the artificial neural network, training and testing the network, are considered. A fault dictionary method was...

Introduction: Thermal feedback from collector power to emitter temperature has been shown to significantly affect BJT performance.’-4 Recently several worker^^.^ have demonstrated ways to model this thermal feedback in circuit simulation assuming that thermal model parameters are available. This Letter introduces a simple way to extract thermal parameters needed for such simulations. BJT therma...

This paper presents an induced voltage linear extraction method for disturbing force self-sensing in the application of giant magnetostrictive actuators (GMAs). In this method, a Kelvin bridge combined with an active device is constructed instead of a conventional Wheatstone bridge for extraction of the induced voltage, and an additional GMA is adopted as a reference actuator in the self-sensin...