What is the highest radio frequency used for astronomy? Is it 3,438 GHz?
On Fri, 31 Aug 2007 02:25:14 +0200, Sjouke Burry wrote:
Tam/WB2TT wrote:
I am curious here. At some point you have to switch from metallic conductors
and antennas to lenses and other optics. Any idea what the highest frequency
RF amplifier works at?
I have even seen optics and electronics combined in an experimental
Road radar for car control from Philips, radar output was a very small
horn antenna connected to a wave guide, and in front of that they used a
plexyglass condensor lens to make a narrow beam, like you do with light.
Apparently those mm waves liked that plastic lens just fine.
Now that you mention it, I saw something on the same principle once, but
it was half a ping-pong ball filled with paraffin. :-)
Cheers!
Rich
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