spiral antenna gain
spiral antenna gain
(OP)
How much more gain could I expect to get by placing a spiral above a reflecting cavity as opposed to a cavity backed spiral where the back lobe is absorbed?
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RE: spiral antenna gain
If the "reflecting cavity" was the 1000 foot diameter dish in Arecibo, then you could get quite a bit of gain...
If the "reflecting cavity" was badly designed, then you could have a deep null where you might normally expect to find gain.
RE: spiral antenna gain
RE: spiral antenna gain
Reference: "Antenna Engineering Handbook" second edition by Johnson and Jasik, chapter 14.
RE: spiral antenna gain