S-20: Difference between revisions

S-20 (view source)

28 bytes added , 10 January 2020

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 Feedthrough design BW 30GHz 2mV sensitivity.
-diode beam lead Schottky diodes on a 5 mil duroid replaceable carrier, coupled to a beam lead SRD based driver also on 5 mil duroid substrate with pins to plug into sockets in the housing. This is all on the side of the lid. The other side of the housing has a polyimide flexible circuit connecting to the [[LEMO_S-series_connector|4 pin LEMO connector]].
+diode beam lead Schottky diodes on a 5 mil duroid replaceable carrier, coupled to a beam lead [[Step_recovery_diode|SRD]] based driver also on 5 mil duroid substrate with pins to plug into sockets in the housing. This is all on the side of the lid. The other side of the housing has a polyimide flexible circuit connecting to the [[LEMO_S-series_connector|4 pin LEMO connector]].
 A special flexible differential cable was designed to keep the delay change to 5pS while torqued/twisted 180 degree This cable drives the SRD differentially. The two extra wire provide the sampler bias and send back the average value of the sampled signal.
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 Abbreviations:
-* SRD: Step Recovery Diode
+* SRD: [[Step Recovery Diode]]
 * HFCD: High Frequency Components Development.  This division under [[Ken Holland]] for many years developed the input attenuators for all 7K and 11K scopes, [[Cam_switch|cam switches]], [[Hypcon]] Connector, [[11A52]] and [[11A72]] input attenuators, later the sampling heads.