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Spirent KB Article
Doc ID: FAQ15382
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Butler Matrix: When connecting the simulator output to the Input 0 is there any phase difference from original simulator output?
Environment/Versions
Butler Matrix
Answer
Yes
You should expect to still see a small phase shift even when using Input 0
But it will be within the tolerances defined on the product specification for the Butler Matrix.
The important aspect of using the Butler Matrix is the phase DIFFERENCE between the outputs, for a chosen input (± the phase accuracy given in the product spec).
Spec for Phase Accuracy
:-
1575.42 MHz
RSS = +/- 7deg
Worst Case = +/- 15deg
1 to 2 GHz
RSS = +10 deg
Worst Case = +/- 20deg
1227.60 MHz
RSS = +/- 10deg
Version
2.0
Publish Date
2014-07-29
Categories
Product : Antenna,Simulator
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