design of an oscillator at 9 Ghz

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LeThalois

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hello every one.

Please, can anyone help me , how to find the highlighted result in the attached picture , i don't know how to find it.

thank you from the bottom of my heart.
 

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sorry i didn't understand you
what i am asking about is how to reach that result theoretically
 

Search for Stripline design and plug in the numbers given.
Length is based on material dielectric constant and fraction of 0.092 wavelength or conversely the frequency at which it is a 1/4 wave or 1/2 wave.

You would want to choose low loss tangent dielectric like teflon , ceramic or perhaps some excellent polyamide

Calculations for Zo and pF/" here

https://www.analog.com/static/imported-files/tutorials/MT-094.pdf

...Can be used to derive the suggested solution.
 
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