Keyword: «parasitic angular modulation»

STABILITY OF A BROADBAND AUTOCOMPENSATOR OF PARASITIC ANGULAR MODULATION OF A FREQUENCY SYNTHESIZER FOR ON-BOARD INFORMATION TRANSMISSION SYSTEMS

Authors:

Andrei Lenshin,

Vladislav Byslavskii

The conditions for the stability of the auto compensation channels of the parasitic angular modulation of the frequency synthesizer are determined. The areas of stable operation of the proposed broadband auto compensator architecture using Butterworth and Chebyshev filters of the second and third orders are analyzed.

Keywords: stability, frequency synthesizer, radio communications, parasitic angular modulation, hurwitz criterion

DEVICES FOR GENERATING MODULATED SIGNALS USING PHASE MODULATORS WITH CORRECTION AMPLITUDE AND PHASE DISTORTIONS

Authors:

Vladimir Sidorchyk,

Anton Korotkov

The sources of parasitic amplitude (PAM) and parasitic angular modulation (PUM) in phase modulators (FM) using indirect methods of formation of modulated signals in frequency synthesizers are considered. FM architectures with PAM and PUM auto-compensation with deviation and perturbation control devices are given.

Keywords: parasitic angular modulation, phase modulator, parasitic amplitude modulation, formation of narrowband radio signals