Laboratory model of the compensated system for dissemination of standard signals via satellite

This paper describes the laboratory model of the proposed compensated system for dissemination of standard time and frequency signals via TV satellite. The circuit for analog delay of the order of 250 ms, which corresponds to the satellite uplink plus downlink propagation delay, was realized with three cascaded Matsushita MN3005 analog delay integrated circuits. Testing of the laboratory model, combined with computer simulation of the PLL with propagation delay included, show that there are ranges of PLL parameters for which PLL is stable in spite of large propagation delay. This proves that the proposed compensated system will operate satisfactorily.