Journal ArticleDOI
Accurate trimming of active rc filters by means of phase measurements
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TLDR
A method is described for accurate determination of the locations of poles and zeroes of a transfer function by means of phase measurements, especially suitable for trimming of second-degree active RC networks.Abstract:
A method is described for accurate determination of the locations of poles and zeroes of a transfer function by means of phase measurements. It is especially suitable for trimming of second-degree active RC networks.read more
Citations
More filters
Journal ArticleDOI
A novel "Follow the master" filter
TL;DR: In this article, the pole-frequencies of active-R filters are made to depend on a stable reference-frequency times the ratio of the gainbandwidth (GB) products, rather than their absolute values.
Journal ArticleDOI
Analogue simulator of e.e.g. signals based on spectral components.
Lars H. Zetterberg,Kjell Ahlin +1 more
TL;DR: The described e.e.g.-signal simulator is based on one delta, and three rhythmic components called theta, alpha and beta denoting the location of the resonance peaks, which leads to a decomposition of the spectrum into one or more spectral components.
Journal ArticleDOI
On selectivity properties of discrete-time linear networks
TL;DR: In this article, the quality factor Q and the resonant angle \theta 0 for discrete-time networks are defined based on the bilinear transform and the selectivity properties for discrete time networks, such as switched capacitor (SC) and digital filters are consistent with analog networks.
Journal ArticleDOI
Automatic tuning algorithms for active filters
D. Hocevar,T. Trick +1 more
TL;DR: Three generalized tuning algorithms which have appeared in recent literature are comparatively reviewed on the basis of their architecture, computational complexity, and effectiveness and a new method is presented for the tuning resistor and frequency selection problem.
Journal ArticleDOI
Easily trimmed third-order RC-active-filter section with finite transmission zeros
TL;DR: In this paper, a third-order single-amplifier RC-active-filter section with finite transmission zeros is described, where the poles and zeros of the network can be adjusted with little interaction by varying resistances in a suitable sequence, so that the section can be economically constructed with wide tolerance capacitors and trimmed to specification.