QT designed instrumentation -microwave



general info on microwaves
MW coax switch driver unit
Unit that can drive MW relais switches providing the pulse currents to set them (both cryogenic and roomtemp).
Can be used with manual and USB control
more info

10MHz-1GHz distribution amplifier with low phasenoise

10MHz distribution amplifier with low phasenoise

more info
diplexers, combining AWG with MW source with low loss and low interaction
diplexer 1: dc-200MHz/ 600MHz-4GHz

MW switch, electronic, 40W RF, 500MHz-6GHz

phase readout (and stabilisation) of microwave generators
(example shows 10MHz generator spacing, has changed to 1MHz spacing now) view the basic experimental application

more info on the sampling concept

example reading of a 20GHz signal, recorded with 10sec persistance
showing the phasestability of the readout:


Phase readout rack, with 6 samplingheads (inputs A...F)  voltage controlled sampling delay input and 10MHz ref
  
dc-block (5kHz-2GHz)

cryogenic Bias-Tee's 5Hz-2.5GHz (connected to gate)

circuit
room-temperature Bias-Tee 10kHz->3Ghz with d.c.monitor out (SSPD application) bottom/top view
 
S21: green: cable only, yellow: cable+bias-tee
S11: red:cable only, blue: cable+bias-tee
circuit
BalUn (balanced output produces 2 opposite phase signals from 1 input signal)
phase error <8deg from 100MHz to >1GHz
tunable bandpass filters