FONT Meeting1 Charge normalisation and IP LO power scan N. Blaskovic.

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Presentation transcript:

FONT Meeting1 Charge normalisation and IP LO power scan N. Blaskovic

Contents Jitter dependence on charge normalisation (using P3 Σ I, IP reference diode or neither) IPC I & Q dependence on LO power level FONT Meeting2N. Blaskovic

Charge normalisation Calibration and jitter runs taken on Waist on IPC in Y Multiple RF variable attenuator settings Upstream and downstream boards set-up Results presented: –Charge normalised using P3 Σ I –Charge normalised using IP reference diode –Not charge normalised FONT Meeting3N. Blaskovic

FONT Meeting4N. Blaskovic

Charge normalisation Charge normalisation appears to worsen jitter, particularly if reference diode is used FONT Meeting5N. Blaskovic

LO power scan Jitter runs taken on Waist on IPC in Y RF variable attenuator set to 10 dB LO level for IPC(Y) electronics changed by 0-11 dB variable attenuator I & Q signals in LO power scan presented FONT Meeting6N. Blaskovic

FONT Meeting7N. Blaskovic IPA IPB IPC Refsplitter electronics attenuator RF variable attenuator diode FONT5 board (digitiser) port 1 port 2 port 1 port 2 port 1 port 2 I Q I Q I Q IP BPM C-band signal Reference C-band signal Base-band signal 6.4 GHz (y) / 5.7 GHz (x) hybrid LO var. atten. LO variable attenuator

FONT Meeting8N. Blaskovic IPC(Y) I IPC(Y) Q Ref(Y)

FONT Meeting9N. Blaskovic IPC(Y) I IPC(Y) Q Ref(Y)

FONT Meeting10N. Blaskovic IPC(Y) I IPC(Y) Q Ref(Y)

FONT Meeting11N. Blaskovic IPC(Y) I IPC(Y) Q Ref(Y)

FONT Meeting12N. Blaskovic IPC(Y) I IPC(Y) Q Ref(Y)

FONT Meeting13N. Blaskovic IPC(Y) I IPC(Y) Q Ref(Y)

FONT Meeting14N. Blaskovic IPC(Y) I IPC(Y) Q Ref(Y)

FONT Meeting15N. Blaskovic IPC(Y) I IPC(Y) Q Ref(Y)

FONT Meeting16N. Blaskovic IPC(Y) I IPC(Y) Q Ref(Y)

FONT Meeting17N. Blaskovic IPC(Y) I IPC(Y) Q Ref(Y)

FONT Meeting18N. Blaskovic IPC(Y) I IPC(Y) Q Ref(Y)

FONT Meeting19N. Blaskovic IPC(Y) I IPC(Y) Q Ref(Y)

LO power scan Mixer output should be in region where it does not vary with input LO level; Siwon: FONT Meeting20N. Blaskovic Linear IF output range due to LO input

Next steps FONT Meeting21N. Blaskovic