Recent content by garryA

Thank you, it make sense to me now. Also If i understand correctly , if we put a radar behind this radome, then the process of reflected happen twice right? one when the wave go out the randome, and one when it come back

Yes, that is my deduction as well the incident power will be reflected before it can be transmitted So for example in the point in the graph bellow let say the incident power is 100W, then the reflected power is also 100W how come the transmitted power is still there? Shouldn't the shape of...

I got your point, but to be able to be converted to heat, the wave must entered the material first, so the fraction of energy that get reflected can’t be transmitted or converted to heat. Let me clarify my point with an example: Let say the amount of energy of the wave at the start is 100%...

So I was reading about frequency selective surface radome, basically this is the kind of cover over the antenna which allow a certain frequency wave to pass through and reflect wave at any other frequencies. What I don't understand is the reflection vs transmission coefficient chart. So as I...

Isn't conductor supposed to have low surfaces impendance?

I didn't know paraffin wax can reflect radiowave

I found here that surfaces impendance affect reflection https://hal.archives-ouvertes.fr/hal-00983587/file/APS2012_-_High-Impedance_Surface_Design_Considerations.pdf "High-Impedance Surfaces (HIS) have been extensively investigated in the field of antennas. Such metasurfaces exhibit an in-phase...

Iam not trying to use that as a reference, I simply trying to understand the reflection behavior of material. Since my knowledge in this field is a bit limited

Someone told me that insulator can have very high surface impedance much higher than the 377 ohms value, therefore they can be good reflector. What do you guys think?

So in short insulator can still reflect radio wave, just not as good as metal?

So, when a radiowave strike a surface, whether the wave get reflected or not depend a lot on the characteristic impendence of it. If the radiowave travel from free space to a material. Any mismatch from the approx. 377 ohms impedance of free space (Z0) will result in a reflected wave; the...