- #1
waht
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I'm working on a bandpass filter at 3.2 GHz. I built a few prototypes interdigital, pipecap cavity, and even microstrip.
Microstrip filter sort of works but it can't be tuned, so I abandoned it.
The other types also work, bandwidth and insertion loss is ok but they all exhibit garbage responses from 6 to 20 GHz, with some peaks having similar insertion than the fundemental.
So I'm looking for a way to either build a new type of filter, (mechanically tuned) or match impedance or something. This is pretty much a homebrew design.
Appreciate any info.
Microstrip filter sort of works but it can't be tuned, so I abandoned it.
The other types also work, bandwidth and insertion loss is ok but they all exhibit garbage responses from 6 to 20 GHz, with some peaks having similar insertion than the fundemental.
So I'm looking for a way to either build a new type of filter, (mechanically tuned) or match impedance or something. This is pretty much a homebrew design.
Appreciate any info.