| Author |
Message |
LeucoB
Guest
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 Posted:
Tue Apr 26, 2005 8:35 am Post subject:
microwave lense? |
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Hi all,
been doing some low power experiments with a surplus
gunnplexer {10.5Ghz @ 10mW}.
Q: From the limited information I've come across, is it possible to
focus microwaves? ie: a parallel beam and/or focused point?
I've seen descriptions of what seem like, essentially, a series of
parallel sheets of thin (sheet) metal cut to what would look like a
profile of a lens.
Am I way off base here?
TIA!
B
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Steve J. Noll
Guest
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| Posted:
Tue Apr 26, 2005 4:35 pm Post subject:
Re: microwave lense? |
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On Tue, 26 Apr 2005 05:27:29 GMT, LeucoB <mynick@gmail.com> wrote:
| Quote: | Hi all,
been doing some low power experiments with a surplus
gunnplexer {10.5Ghz @ 10mW}.
Q: From the limited information I've come across, is it possible to
focus microwaves? ie: a parallel beam and/or focused point?
I've seen descriptions of what seem like, essentially, a series of
parallel sheets of thin (sheet) metal cut to what would look like a
profile of a lens.
Am I way off base here?
TIA!
B
|
You can make a lens that will work at X-band from paraffin.
Melt some in a curved-bottomed bowl. Remove when solidified.
Steve J. Noll | Ventura California
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Bill Janssen
Guest
|
| Posted:
Tue Apr 26, 2005 4:35 pm Post subject:
Re: microwave lense? |
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|
LeucoB wrote:
| Quote: | Hi all,
been doing some low power experiments with a surplus
gunnplexer {10.5Ghz @ 10mW}.
Q: From the limited information I've come across, is it possible to
focus microwaves? ie: a parallel beam and/or focused point?
I've seen descriptions of what seem like, essentially, a series of
parallel sheets of thin (sheet) metal cut to what would look like a
profile of a lens.
Am I way off base here?
TIA!
B
Bell Labs called that type of lens an Acceleration Lens The signal |
"appears" to travel faster
when between the plates
You can also build a lens by slowing the wave by using plastic or many
short pieces of wire
as in Yagi directors.
Have fun
Bill K7NOM
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