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Yeah.By learning the files that vfone gave me,I know that I can change the bandwidth by change the transmission power between the resonators. when I tune the screws in the coupling apertures,I can change the transmission power.
But I still don't understand why the cover should be shorted with...
Hi thank you for your links.
I know more about the tunning method.And I also know why the bandwidth will change when I tuning the coupling apertures.
Do you have some links about the basic structure of a cavity filter? I still can't match the circuit with the object.I don't know which part...
Thanks for your reply.I just get an example of cavity filter and circuit,that circuit is not the equivalent circuit of that filter.
I want to make my question more clearly,so I add that circuit.
I download a crossing draw of a filter and a circuit,they are not matched,just for a question...
I know it will change the value of the capacitor when rotating the tunning bolt, and then the frequency will change.
I have two mainly question:
1.what's the principle of adjusting passband, I know it can be tuned by the rotating bolt which is not above the resonator,but I don't know
the...
I'm a noob in filter area,I don't need to design filter,but I need to deal with the tuning and test issues.
I can't search suitable information from internet,I want to know the tunning principle and tunning rules,
especially for extending or narrowing frequency,not shift frequency beacause I...
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