𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Principles of complex wave digital filters

✍ Scribed by Alfred Fettweis

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
911 KB
Volume
9
Category
Article
ISSN
0098-9886

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The theory of real wave digital filters (WDFs) is extended to complex WDFs. A fundamental requirement turns out to be that of one‐realness, a complex impedance in the reference filter being called one‐real if it is real for Ξ¨ = 1, where Ξ¨ is the equivalent complex frequency. The only new components then required are complex multipliers with unimodular coefficients, but the adaptors are just as in the real case. The stability properties known for real WDFs can, in this way, also be extended.

πŸ“œ SIMILAR VOLUMES

Wave digital lattice filters
Wave digital lattice filters
✍ A. Fettweis; H. Levin; A. Sedlmeyer πŸ“‚ Article πŸ“… 1974 πŸ› John Wiley and Sons 🌐 English βš– 359 KB
Selective, constant delay wave digital f
Selective, constant delay wave digital filters
✍ G. Denton; H. J. Carlin πŸ“‚ Article πŸ“… 1979 πŸ› John Wiley and Sons 🌐 English βš– 355 KB

## Abstract A wave digital filter design method is discussed which produces good selectivity and flat delay characteristics. The filter is designed in the microwave domain with monotonic stopband response using Carlin and Wu's technique for minimum‐phase linear phase commensurate line transducers,

Wave digital filters with reduced number
Wave digital filters with reduced number of delays
✍ Alfred Fettweis πŸ“‚ Article πŸ“… 1974 πŸ› John Wiley and Sons 🌐 English βš– 628 KB

## Abstract A method is described which allows one to design wave digital filters with a reduced number of excess delays. It consists in first multiplying all impedances of the original LC‐filter either by Ο• = tanh (pT/2) or by 1/Ο•, similar to what has been proposed by Bruton, although for differen