Divisores Wilkinson con elementos concentrados para procesado de pulsos

Resumen

Some photodetectors like PMTs and SiPMs give pulses of few nanosecond width at their outputs, which need to be properly processed with analog circuits. Power splitters with two and three outputs are required to distribute this kind of fast pulses equally among different outputs. Good matching and low pass response are necessary to avoid shape deformation, which discard low frequency designs with operational amplifiers. To match these requirements two Wilkinson dividers were designed, substituting the lambda quarter lines for lumped elements. These changes provide us with low pass response and much smaller size, using SMD devices. The splitters were manufactured and measured, with good results.