Comb generator for measurement receiver test [articol]

Abstract

Quick testing of measurement receiver needs rich frequency spectrum signals, with each component known frequency and level. This can be done with comb generators having outputs in equal frequencies distances. They work using very sharp - and consequently very wide spectrum - pulses, distance between two harmonics being equal with repetition - or clock - rate of impulses. This paper shows the performances of a portable comb generator working on this principle, used in verifying measurement receivers in 30MHz-2GHz areas, as well as experimentally obtained results.