Dual band gap resonator design question

[yefj]

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?
So I will have a resonance at lower frequencies.
Thanks.

 

[Baluncore]

Is there a way i can make a dual resonance with such structure or similar?

Are you looking to attenuate two frequencies, while preserving the broader spectrum? Or are you looking to preserve two frequencies, while attenuating the broader spectrum?

You need to define your resonators as either one or two port devices.
A one port resonator connects the port to ground through the resonator.
A two port resonator connects the resonator between the two ports.

What is the "band" gap resonator in the title?

 

[tech99]

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?
So I will have a resonance at lower frequencies.
Thanks.
View attachment 358012
View attachment 358013

I think the easiest way is to simply place another resonator alongside the present one. It would be better to make the present one the low frequency resonator and the new one the higher, so that the lengths can be accommodated. You might need to experiment with the spacing.

 

[yefj]

Hello Tech99, My gap resonance freuqency is desided by the length of the strip line as shown below.
Could you draw How can I put another resonator in this structure so it minimally interfer with the original gap resonator?

 

[tech99]

I have attached a drawing showing a possible method.

 

[DaveE]

I have attached a drawing showing a possible method.

So y'all don't have to download the pdf:

 

[yefj]

Hello Tech99, The Idea is great . I have devoloped it .Its hard to describe a situation on photos . So I made a video describing the situation.Basicly I got the situiation where one line resonance is much much stronger then the resonancwe of the other line,I needed to maje the 5Ghz line to be thicker in order to make it stonger.
Why the 5Ghz is so weak while 3Ghz gap is so strong.I was told that I cant make the 5Ghz so thick.
Is there a way to increase the coupling of the 5GHz whithout increasing thickness?
link of a video Video and photos are attached.
2025-03-25 15-24-07.mkv