Recent content by yefj

Hello,I have built an anapole resonator described below. It work almost great but I get a very hard decline in magnetic field from the surface to the height of 0.1mm. from 2000A/m to 300A/m in just 0.1mm height increase. is there a way to increase the magnetic field? Video is attached in the...

Hello tech99,I made a video for you explaining the situation. I just can find a good way to increase frequency all methods are barely increasing the frequency . Thanks. 2025-08-27 08-15-49.mkv

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...

Hello, I am building an anapole resonator as shown below.for wide 50uX25u bridge we have a current going into two separated streams on the sides of the bridge. but as the bridge gets thinner the current is much more homogeneos(and so is the magnetic field) over this bridge as shown below How...

Hello, could you please draw in general, its hard to imagine your the exact location of the screw? Thanks. "1. Metallic Tuning Screw Place a brass or copper screw near (but not touching) the sapphire. Adjust its distance to perturb the evanescent field, shifting frequency (~100–500 MHz/mm)."

Hello, I have a wispering gallery mode at 10.24GHz, the resonator is a saphire cilinder which sits on a teflon. I want to shift that mode to 14.5Ghz after that I need to do some tuning of the mode frequency. I cannot change the saphire outer diameter as a way to do fine tuning for the modes...

Hello,Could you please draw what you mean in general? How down it helpes with achieving good coupling?

Hello,I have built a resonator which needs to produce whispering gallery mode and coupled threw coaxial cables . I got a mode at 9.87z and at 11.29Ghz. But its coupling is very low . How can I increase the coupling to this mode? Thanks. 2025-05-21 12-38-37.mkv

Hello,I want to created th following system.From the articles I see that we input noise to the amplifier then the noise gets amplified and we compare thefeedback from the output(s11) to the noise. few questions: 1. where is the comparation of the feedback in the topology below. I cant see here...

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...

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?

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.

Hello Tech99,I am trying to understand the words you said. I have a microstrip with two gaps ,I am having problem visualising where do I need to put the open circuit stub. Could you please tell me on drawing below where should the stub be located? Thanks. The Smith Chart shows a reasonable...

Hello Baluncore, Its not a filter but a resonator, I am supposed to connect a capacitor in one gap to shift the resonance frequency as shown below, however that dip of S22 gets small ,I thought to use a stube to incread the dip is it possible? Thanks. "Do you want a deep rejection notch"

Hello, I have a gap transmission line resonator the gaps are sighned in arrows.The matching is -5dB. Is there a way to increase the matching by adding an opencircuit stube to the transmission line resonator? It will be great to have some physical intuition. Thanks.