Discussion
What is a leaky wave antenna?
Answer: A
A leaky wave antenna uses a guide whose wave loses power to radiation steadily as it travels, so the aperture is illuminated progressively and the beam points at an angle set by the phase velocity. Because that velocity depends on frequency, the beam scans as the frequency is tuned, which is used deliberately in some radars. A fault, a mismatch and a deliberately mismatched slot array all describe different situations, though the last is closely related in construction.
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