Question on waveguide filter design

时间：04-11 整理：3721RD 点击：

Hi, dear friend,

Please refer to the attached picture.

In the waveguide filter design, I've already figured out the values of L1 to L5, B01 to B56. But how should I get the corresponding numbers and diameters of the posts?

Thank you very much!

Saryee (yxc0458@yahoo.com)

use the ansoft desinger to do it

Yes. We can use any CAD tool to simulate this structure. But how do we get the initial dimensions?

Thanks!

See the waveguide book for specifics if required.

Dimensions are calculated in terms of impedance and electrical length(freq. depedent). Use any tool are you said it. You already know values C,L

Then pick a waveguide kind (example coax) and make these impedances in electrical(also physical) length to coax in particular.

There are tools. I dont know for ansoft designer but for ADS use LineCalc. See picture attached.

thanks.

If you want to get results with more accuracy,make reference to Harrington' book:
Time-Harmonic Electromagnetic Fields,or use moment of method.
I'm also have some research to it.

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