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theory for PCB resonator with special kind of mode

Y

yefj

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Hello ,I have built a resonator in CST as shown bellow .
I need to make the resonator be in such mode so the H-field will be normal to PCB plane.(W diection in the photo).
Surface shows two peaks.
As you can see I have peak magnetic field at the edges.
Is there some PCB way to excite magnetic field peak in the middle of the ring in the direction of W(normal to PCB plane)?
Thanks.
1734548921142.png


1734548950734.png

1734548994323.png

1734549020984.png
 
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UPDATE:
Hello ,I succseeded and made a breakthrew . As you can see in the links I removed the ground plane bellow the ring and I got the H-field prepandicular to the plane. How do you reccomend to increase the coupling to this mode? Is there some intuitions I could use?
Thanks.
ibb.co/zf4fSHL
ibb.co/QD4Bnp2
ibb.co/SP8ZJmD
ibb.co/6stTjkc
ibb.co/JdBnhPq
 
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