Glide Symmetry Applied to Printed Common-Mode Rejection Filters

Behavioural Models for Common Mode EMI Filters

Complex Filters Applied to Fingerprint Images Detecting Prominent Symmetry Points Used for Alignment

For the alignment of two fingerprints position of certain landmarks are needed. These should be automatically extracted with low misidentification rate. As landmarks we suggest the prominent symmetry points (core-points) in the fingerprint. They are extracted from the complex orientation field estimated from the global structure of the fingerprint, i.e. the overall pattern of the ridges and val...

Computation of Common Mode Radiation Due to Asymmetric Coupling on Printed Circuit Boards

Common mode radiation often is the predominant contribution to the overall radiation from printed circuit boards. Since the return paths for common{mode currents are via displacement current, the proximity of the printed transmission lines to nearby metal objects become important. It is shown that common mode currents are due to the asymmetry of the printed structures , and therefore, an eeecti...

A Digital Common-Mode Rejection Technique for Differential Analog-to-Digital Conversion

A multibit analog-to-digital converter can achieve high resolution with a lower order modulator and lower oversampling ratio than a single-bit design, but it requires a multibit internal flash analog-to-digital converter rather than a simple comparator. In an implementation with a fully differential analog front end, the flash analog-to-digital converter must quantize a differential voltage rel...

Matching pursuit filters applied to face identification

We present a face identification algorithm that automatically processes an unknown image by locating and identifying the face. The heart of the algorithm is the use of pursuit filters. A matching pursuit filter is an adapted wavelet expansion, where the expansion is adapted to both the data and the pattern recognition problem being addressed. For identification, the filters find the features th...