Transparent Materials to Radar between 4-8 GHz

[avocadogirl]

If I am using radar to determine the distance of an object from my transmission source by reflecting my radio waves off of the surface of the object and recording the time at which they return and, I want to encase my detector to protect it from the elements, how do I select the material with which to encase my detector such that it will be "transparent" to the radar?

Thanks for your time!

M.

 

[Drakkith]

Not sure how much this will help, but a quick google search of "Radome Materials" turned up this: http://www.engineered-radomes.com/id3.html

 

[SteamKing]

Obviously, anything without any metal in it. Most plastics should be transparent.

 

[avocadogirl]

Thank you both, greatly, for your replies. They are both of help and, I appreciate your time.