Summer Symposium on Circuit Theory, 5th, Kladno, Czechoslovakia, September 5-9, 1977, Proceedings. Main Lectures. Short Contributions

The papers deal with such aspects of circuit theory as digital signal processing, active filters, computer-aided circuit design, phase-locked loops, and frequency synthesis. Major topics include Discrete Fourier Transform (DFT) transformers for evaluating successive periodograms, recent developments in digital finite-impulse-response (FIR) filtering, multiloop feedback active RC filters, recent progress in the synthesis of active RC filters, the use of a closed-system model in computing network functions and matrices, a quasi-three-dimensional thermal model of a hybrid integrated circuit, spectral properties of third-order phase-locked loops, and circuits and signals in phase-control systems. Other contributions discuss designs and applications of some two-dimensional digital filters, a method for frequency-domain analysis of discrete-time networks, electronically controllable RC filters, linear transformation techniques for active simulation of ladder filters, the connection problem on a printed circuit board, a universal thyristor model for computer-aided design, a compound digital phase-locked loop, and a comparison between phase-locked and injection-locked microwave oscillators.