Tuning anapole resonator question

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Hello , I have designed an anapole resonator which works great at 10GHZ,With the mode shown below.
However when I try to increase the frequency of this mode by decreasing the inner circle it didnt went so well.
Video is attached ,could you please help me understand how to increase the frequency of this mode and increase its coupling?
Thanks.
2025-08-20 10-19-52.mkv
1755675116827.webp

1755675091144.webp

1755675064194.webp
 

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