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    Closed: How to Count the Transmission Zero?

    154952
    in the picture,how many TZs at DC and how many TZs at infinity?how to count them?
  2. [SOLVED]Closed: Re: what's the rf cavity filter tuning principle

    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...
  3. [SOLVED]Closed: Re: what's the rf cavity filter tuning principle

    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...
  4. [SOLVED]Closed: Re: what's the rf cavity filter tuning principle

    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.
    ...
  5. [SOLVED]Closed: Re: what's the rf cavity filter tuning principle

    thank you, your links are useful. I need more time to understand them because English is not my mother language:-D
  6. [SOLVED]Closed: Re: what's the rf cavity filter tuning principle

    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...
  7. [SOLVED]Closed: what's the rf cavity filter tuning principle

    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...
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