[Amps] placement of RF choke bypass cap.

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Thu, 18 Mar 2010 19:03:20 -0400, "Gary Schafer"
<garyschafer at comcast.net> wrote:

>
>But it is relevant. It is the same thing. He has part of one surface
>conducting RF between the two terminals. Measuring on the other side of the
>sheet shows no current on the other side. 
>If you think about it the sheet of copper or your chassis, as far as RF is
>concerned, is two very thin sheets with an insulator in the middle. The
>insulator comes about because of skin effect.
>
>It is no different than the shield on a coax cable. No RF energy can
>penetrate the shield because of skin effect. 

REPLY:

Think about this:  If you made a dipole out of flat bar instead of
wire, you could feed just one side of the bar and have an antenna that
radiated in only one direction. The other side of the bar would shield
against radiation in that direction.  This would make a great driven
element for a yagi wouldn't it? No reflector needed. 

There must be a reason why they don't do that.

73, Bill W6WRT