Design and Construction of Relay-Based RF-SignalSwitching Module for High Signal Integrity
This thesis work consists of constructing and validating a module designed tofacilitate automatic testing of digitizers at SP Devices. The focus of the report isthe use of simulations of transmission lines to maximise signal integrity. Signalintegrity is discussed mainly from an electromagnetic point of view and the parametersaffecting the signal integrity are presented and discussed. It is shownthat simulations using 2D field solvers work well in the cases where 2D modelsare applicable, while 3D field solvers should be used in other cases. The importanceof simulating all transmission line features is seen in the resulting measurementsas the characteristic impedance misses the mark in the cases that are notsufficiently simulated.The design of a trigger generation circuitry is presented and the resulting mismatchbetween Spice simulations and results are discussed and analysed.
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