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UHF Antenna Shielding - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


mjwebster99
 Post subject: UHF Antenna Shielding
Posted: Fri Nov 18, 2005 8:29 am 
Hi
Im currently developing a system that will use two horizontally polarized recieving antennas roof mounted on a car. What i want to do is have one antenna recieving from the front and the other receiving from the rear on the car. So i intend to apply shielding to the rear sections of each antenna to isolate the reception to front and rear. I am recieving at UHF 868 mHz, does anyone have any recommendations as to what shileding materials to use?
Many Thanks
Matthew Webster


 
  
 
eldrichmyer
 Post subject:
Posted: Fri Nov 25, 2005 5:13 am 
 
Lieutenant

Joined: Thu Nov 24, 2005 2:40 am
Posts: 3
Hey dude,

I assume from the post you made a little later, that you don't want your car to look like it has a billboard on the roof! what I would suggest (please note I am a bit new to the RF game and more than a little daft) is to use a mesh type screen between the two antennas, which you should be able to get from your local hardware store. however what may work better is a type of repeater setup, where instead of using one antenna for transmit and recieve, use two, but switch between the two of them.

Hope that helps!





Posted  11/12/2012

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