Gent's
Scientific-Atlanta has build dish antennas with this type of
construction. The idea was the same, to lessen the transition on the
edge of the dish. The idea never made it into production. The
cost/benefit was not that great.
My approach is to over build the ground plain. What I am using now is
about 40x80 ft of galvanized steel hardware cloth soldered every 5 to
6 inches. This allows me to test to other standards as well.
Al Patrick
Scientific-Atlanta
EMC Lab, Engineering Manager
[email protected]
______________________________ Reply Separator
_________________________________
Subject: Re: ANSI C63.4-- OATS construction issues
Author: "[email protected]" [SMTP:[email protected]] at IMS
List-Post: [email protected]
Date: 11-12-98 10:03 PM
Chaps,
I recall an interesting paper where the ground plane edge did not end
abruptly, but was shaped with what looked like petals. The work was also
stretched to cover dish antennas etc. For some reason the idea came from
Georgia springs to mind.
The paper claimed better performance from a smaller plane, especially when
elevated above ground level.
Alas, I can't recall where I read this...... Can someone else?
Best regards,
Derek.
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