TBT filter

from Wikipedia, the free encyclopedia

A TBT filter is a frequency filter whose properties are between those of a Butterworth filter and a Thomson filter . The Butterworth and Thomson filters (also called Bessel filters ) can be understood as the two limit values ​​of a TBT filter. The step response of a network (e.g. filter) is determined by the position of the poles of its transfer function in the complex frequency plane. If one chooses positions for the poles of the network between those of a Butterworth and a Thomson filter, then one achieves a step response between that of Butterworth and Thomson. In practice, one selects the required step response from a catalog, decides on a specific circuit structure and reads the associated standardized values ​​for the components (coils and capacitors).

Individual evidence

  1. Yona Peless and T. Murakami: Analysis and Synthesis of Transitional Butterworth-Thomson Filters and Bandpass Amplifiers . In: RCA Review, March 1957
  2. H. Brettel: TBT filter for impulse application . In: Max Planck Institute for Physics and Astrophysics Munich, MPI-PAE / TB-Exp.El., July 1, 1973