Homepage - RF Cafe
Webmaster: Kirt Blattenberger | KB3UON | Sitemap | ©1996-2014
Menu below is just a small sample of what is here!
 
Custom Search
More than 10,000 searchable pages indexed.
•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<

UHF Antenna Shielding - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


 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


 
  
 
 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
A Disruptive Web Presence

Custom Search
Over 10,000 pages indexed! (none duped or pirated)

Read About RF Cafe
Webmaster: Kirt Blattenberger
    KB3UON

RF Cafe Software

RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

RF & EE Symbols Word
RF Stencils for Visio

Product & Service Directory
Personally Selected Manufacturers
RF Cafe T-Shirts & Mugs

RF Cafe Software

Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel
Your RF Cafe Progenitor & Webmaster
Click here to read about RF CafeKirt Blattenberger... single-handedly redefining what an
                                 engineering website should be.

View the YouTube RF Cafe Intro Video Carpe Diem! (Seize the Day!)

5CCG (5th MOB): My USAF radar shop

Airplanes and Rockets: My personal hobby website

Equine Kingdom: My daughter Sally's horse riding website