Transcription of Digital Signal Processing in RF Applications
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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 28 addendum: Direct Digital Synthesis (DDS) DDS properties: produce an analog waveform by generating a time-varying signal in digital form size of lookup table (phase to amp. conv.) is determined by: number of table entries bit width of entries (determines amplitude output resolution)
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