Transcription of Digital Signal Processing in RF Applications
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Digital Signal Processing in RF Applications
06 June 2007 CAS, Sigtuna, SwedenDSP Digital Signal ProcessingDigital Signal Processing in RF ApplicationsPart IThomas SchilcherRF applicationsCAS, Sigtuna, SwedenDSP Digital Signal ProcessingT. Schilcher06 June 20072 What are RF Applications ?any application which measures properties of an RF field (amplitude, phase, frequency, ..);typical frequencies in accelerators: MHz tens of GHzapplications which process the measured quantities to control and regulate RF fields(feedback and feedforward)RF applicationsCAS, Sigtuna, SwedenDSP Digital Signal ProcessingT. Schilcher06 June 20073 Typical RF applicationscavity field loops(amplitude and phase)klystron loops(amplitude and phase)tuner loops(cavity tuning)radial and phase loops(circular machines) RF gymnastics (bunch splitting and merging)Accelerators:CW / pulsed machineslinear / circular machinesApplication areas (examples):electron/hadron/ion acceleratorsnormal-/superconducting RF systemsRF applicationsCAS, Sigtuna, SwedenDSP Digital Signal ProcessingT.
DSP – Digital Signal Processing T. Schilcher 06 June 2007 27 NCO advantages: tuning word is programmable frequencies up to nearly f S /2 (Nyquist) possible extremely fast “hopping speed” in tuning output frequency, phase-continuous frequency hops with no over/undershoot or analog-related loop settling time anomalies.
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