1. FONT Meeting1 Digital signal filtering N. Blaskovic

2. Contents Fourier transforms of I and Q waveforms without BPF and with 714 MHz & C-band BPFs Digital LPF tests and application to data without BPFs FONT Meeting2N. Blaskovic

3. Fourier transforms Waveforms and their Fourier transforms: –Without BPF (12 June) –With 714 MHz BPF on dipole signal (12 June) –With C-band BPF on dipole signal (19 June) New: –Pedestal subtracted –FFT of all usable samples (184 samples) FONT Meeting3N. Blaskovic

4. FONT Meeting4N. Blaskovic IPA I IPA Q no BPF

5. FONT Meeting5N. Blaskovic IPA I IPA Q 714 MHz BPF

6. FONT Meeting6N. Blaskovic IPA I IPA Q C-band BPF

7. Digital filtering Use a 6 th order low pass Butterworth filter Cut-off frequency: 25 MHz Sampling frequency: 238 MHz (SIS) FONT Meeting7N. Blaskovic

8. FONT Meeting8N. Blaskovic 25 MHz119 MHz 25 MHz119 MHz

9. Digital filtering Test 25 MHz digital LPF with signals: –A: sine waveform with 9.5 MHz frequency –B: sine waveform with 47.6 MHz frequency –C: sum of A and B Filtered signals are denoted Af, Bf & Cf, respectively Phase lag of filtered signals observed relative to unfiltered signals FONT Meeting9N. Blaskovic

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14. Digital filtering Digital LPF applied to data without BPFs: –10 MHz LPF (corresponding to 714 MHz BPF bandwidth) –25 MHz LPF (corresponding to C-band BPF bandwidth (?)) FONT Meeting14N. Blaskovic

15. FONT Meeting15N. Blaskovic IPA I IPA Q no digital LPF

16. FONT Meeting16N. Blaskovic IPA I IPA Q 10 MHz LPF

17. FONT Meeting17N. Blaskovic IPA I IPA Q 25 MHz LPF

18. FONT Meeting18 Appendix Waveforms and their Fourier transforms for IPB and IPC with different BPFs and 10 & 25 MHz digital LPFs without BPF N. Blaskovic

19. FONT Meeting19N. Blaskovic IPB I IPB Q no BPF

20. FONT Meeting20N. Blaskovic IPB I IPB Q 714 MHz BPF

21. FONT Meeting21N. Blaskovic IPB I IPB Q C-band BPF

22. FONT Meeting22N. Blaskovic IPB I IPB Q 10 MHz LPF

23. FONT Meeting23N. Blaskovic IPB I IPB Q 25 MHz LPF

24. FONT Meeting24N. Blaskovic IPC I IPC Q no BPF

25. FONT Meeting25N. Blaskovic IPC I IPC Q 714 MHz BPF

26. FONT Meeting26N. Blaskovic IPC I IPC Q C-band BPF

27. FONT Meeting27N. Blaskovic IPC I IPC Q 10 MHz LPF

28. FONT Meeting28N. Blaskovic IPC I IPC Q 25 MHz LPF