Discussion
What is a slotted waveguide array?
Answer: B
Cutting slots in the wall of a waveguide interrupts the wall currents, and each slot radiates with an amplitude set by its offset from the centre line and a phase set by its position along the guide. The result is a rugged, low loss, accurately controlled array widely used in radar. Dielectric loading, separate guides and tuning access are different arrangements entirely. The elegance is that feed network and radiating elements are the same piece of metal.
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