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dual band gap resonator

Y

yefj

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Hello , I have built a gap resonator which is resonant only in one frequency.Is there a way i can make a dual resonance with such structure or similar?
Thanks.
1740989315163.png

1740989274823.png
 
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An option to get dual resonance is to build this structure:
 

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Hello Vfone,I need to have a control these two resonances. do you have some intuitions regarding how we get two resonance from these structure?
In the photo we have resonance at f1 and 2*f1
I need f1 and f2 as much independant as possible.
Thanks.
 
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f2 is not 2*f1. f1 and f2 are pretty much independent. The small dependence that exist is due to the coupling between strip lines.
Changing the length of the strip lines results different resonances.
 

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