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Recently developed circuit modules, used for the processing of position
signals of electrostatic (button-type) pickups are presented. The
concept is based on the broadband (monopulse) AM/PM normalisation
technique. The short integration time (≈ 10 ns) makes this
read-out electronics suitable for single-bunch position measurements
nearby interaction areas and in linear accelerators. Details on circuit
design and technology, as well as the practical realization are shown.
The results discussed include beam position and orbit measurements made
with a set of 40 units at the FEL-undulator sections of the TESLA Test
Facility (TTF) linac.
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