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Split Ring Resonator (at 20 GHz) loaded with CPW (Coplanar Waveguide) [G-S-G] with pitch size (of GSG probe) 0.15 mm!
50 Ohm impedance of CPW was matched, but after loading SRR no resonance occurred. S11 and S21 curves are appearing totally flat. I loaded CSRR also, and changed different...
I read on HFSS document that whenever a project file is opened, two new files HFSS.auto and HFSS.lock is created automatically, so these are not due to wrong directory path or any other mistake. Its just they way, HFSS works as I could understand.
Every time I open my project file, two new files (HFSS.lock and HFSS.auto) are created. Can anyone suggest how to cope with these so that they may not create automatically?
I copied this design in another folder and then copied back in the previous folder.
I have doubt also that due to these...
Near zero S11 response is appearing. Is it due to mismatch problem? A coaxial connector is used to feed a cavity resonator (ideal position at cavity center).
S11 is almst approaches to zero, which is completely wrong. Should I try to find suitable position across the surface of cavity for...
Now cavity consists of all sides of metal (top, bottom, and circular walls), a copper post is placed at the center of the cavity, and connected by inner cylinder of coaxial connector. Much better results now.
However, cavity diameter, and post dimension (diameter and height) are not affecting...
Right, I agree.
Previously I made assigned "Finite conductivity" to the top of cavity, but it was overlapping with Upper ground layer, so i removed the finite conductivity of top of cavity.
(The substrate is middle layer, while top and bottom layers are grounded metal).
But I try to think in the...
Yes, you are right, I failed to understand the meaning of "Air filled cavity". Now I modified the design in this way:
1) A hole is realized in the substrate by subtracting a cylinder.
2) A cylinder of same dimension (diameter and height) as of hole, is drawn to model the air material inside...
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Please check the S21 curve:
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I just did theoretical calculation (using Pozar's book formulae) and once again I got the same results: radius of cavity 82 mm, height of cavity 164 mm @ 2.4 GHz and using TE (011) mode.
While available substrate...
Hello again,
I mistakenly mixed the idea of cavity resonator with dielectric resonator due to some confusion.
My intention is to design "Cylindrical Cavity resonator" without any dielectric filled inside cavity, which means cavity is empty (or filled with air).
I have attached the following...
My designed structure is resonating properly (I checked through combined graph of real and imaginary impedance values). However two issues are still left to solve.
1) Structure was designed/expected to resonate at 2.4 GHz, but its resonance is occurring at 5.8 GHz.
2) S parameters (S11, and S21)...
A hole is drilled in the Duroid, and different samples are planned to test (for example, air filled, or liquid filled, or Teflon filled hole). Yes, in that sense it should be called dielectric resonator. Sorry, I was using the formulas of simple cylindrical cavity resonator.
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TE(011) mode for cylindrical cavity is used, while frequency used is 2.4 GHz. I calculated dimension of cavity (radius and height) but they appear too large to fabricate. (For example radius appeared 80 mm and height was 160 mm, as I assumed height is equal to twice the diameter).
I am using...
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