Title :
A Coaxial Cable Delay System for a Synthesis Radio Telescope
fDate :
6/1/1984 12:00:00 AM
Abstract :
A switchable coaxial cable delay system for path compensation in a synthesis radio telescope operates over the frequency band 15-45 MHz. The requirements of continuum and spectral line observations determine the system specifications. Diode switches include or exclude cables whose lengths form a binary sequence from 0.625 to 320 m. Cables are equalized to compensate for the effects of frequency dependent attenuation and of dispersion. A simple technique for dispersion equalization is described.
Keywords :
Attenuation; Binary sequences; Coaxial cables; Delay systems; Diodes; Dispersion; Frequency dependence; Frequency synthesizers; Radio astronomy; Switches;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.1984.4315166