I think Mike and I have hade the same positive experience with
using WG 22 at 24 Ghz
Regarding spectrum analysers
Yes the 21 GHz HP 8559 analysers
work fine at 24GHz, as that is what I used for the 24 ghz FM
TV link I demonstrated at a BATC convention some 30 plus years ago
The old HP
18 ghz in the 140 main frame also works OK at 24 ghz using a WG 22
measurements the WG 22 HP power sensors are useable at 24 Ghz
Just as a side
question what is your approximate location
recommended for 26GHz-40GHz but it is still well above cut-off at 24GHz. I
think the New Zealand
relays Iam using are WG22. I simply connected them together directly, by
filing slots in the WG20 flange because the hole spacing is different. I used 3
fine screws to tune out the miss-match in the usual manner. It should work OK
for narrow bandwidths. If you don't have a 24 GHz VSWR meter or VNA, just use a
directional coupler and a sensitive detector (e.g. a spectrum analyser or a
crystal detector). The old 22GHz HP8559 analysers work fine at 24GHz, they are
un-calibrated but you are only looking for a null.
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