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Hi,
I'm currently simulate a patch antenna at 800MHz with a coaxial feed above a substrate (Epoxy 4.3, h=1.6mm).
So, I'm interested by the variation of impedance along a patch.
Genearally, the impedance is zero at the center and ≈100-300Ω at the edge.
While, for my case, I find zero in the...
Hi,
I would like simulate a array of patch antenna on Epoxy. So, I begin by a single patch antenna for determinig the impedance's antenna, before begining the array.
I'm currently simulate the single antenna with HFSS, I use The probe feed patch antenna, I use a wave port 50 Ω, and I move the...
Thanks for your attention.
But the ABC boundaries is also a 3D object because you must to select a air box . and the air box must be also meshed and solved.
Hi,
After reading some patents and articles about the two method of simulation: Radiating Boundary Condition and PML( Perfectly Matched Layer).
I concluded that PML is better than RBC, because the PML have a property to absorb the incident wave from antenna, without reflecting energy into the...
I use CST and HFSS. The difference between the two softwares is that CST use two method of simulation: Time and frequency domain analysis, but HFSS use only the frequency domain analysis.
So, the choice of software depends on the choice of antenna structure.
Ok.
I study a patch antenna at 800MHz, so the dimension' s 20*11cm with the feed line.
So, in the first time, I used a air box more than λ/4 for a patch antenna (800MHz), the resonant frequency is 800MHz with a good S11, and when I increase the dimensions air box the resonant frequency is...
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I'm not agree, we can have a weakly radiating antenna at 1GHz for example, and in this case the near field is not applied from λ/10. The boundary of the near or far field depends of the frequency.
Hi every body,
I'm currently simulate a simple patch antenna in HFSS, and I don't know exactly the dimensions of the air box (Radiation boundary). You think that λ/4 is suffisant?
Thanks
Hi,
I think that the port is correctly assigned, the direction of the port represents the polarization of the electric field. For your case, the E is horizontal. it's a U antenna?
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