𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Dimensioning the low-pass filters in pcm terminal equipment

✍ Scribed by Ernst Schultze

Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
409 KB
Volume
4
Category
Article
ISSN
0098-9886

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

In many PCM terminal equipments both the transmission (signal sampling) and reception (interpolation of the sampled values) sides each employ a circuit in which a low‐pass filter is directly connected to a switch. In the circuits described here the energy transmission takes place during the very short interval where the switch is closed. However, the transmission is not effected by the familiar resonance transfer but by an aperiodic compensation, which is more suitable for practical use. Because of the very short time where the switch is closed as compared with the switching interval, the analysis can be greatly simplified by the use of Dirac pulses. As a result very simple formulas for the frequency characteristics are obtained which can be applied to optimize the circuit elements.

πŸ“œ SIMILAR VOLUMES

Elimination of direct responses and one-
Elimination of direct responses and one-bond modulations in long-range heteronuclear chemical shift correlation spectra through the use of low-pass J filters and BIRD pulses
✍ Miguel Salazar; Andrew S. Zektzer; Gary E. Martin πŸ“‚ Article πŸ“… 1988 πŸ› John Wiley and Sons 🌐 English βš– 502 KB

Modified long-range heteronuclear chemical shift correlation pulse sequences which incorporate both BIRD pulses midway through the A, magnetization transfer delay and low-pass J filters are described. The BIRD pulse provides the means of decoupling one-bond modulations of response intensity when mag