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561

Centuries: 5th century - 6th century - 7th century

Decades: 510s - 520s - 530s - 540s - 550s - 560s - 570s - 580s - 590s - 600s - 610s

Years: 556 557 558 559 560 561 562 563 564 565 566


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Planar array

... all of the elements, both active and parasitic, are in one plane. Note 1: A planar array provides a large aperture and may be used for directional beam control b ...