Passive, frequency-steerable, microwave repeater system

Communications: directive radio wave systems and devices (e.g. – Determining direction – With frequency or phase steering

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Details

342 5, 342367, 343912, G01S 1302, H01Q 1518

Patent

active

046774408

ABSTRACT:
Microwave communication and radar systems that employ a blazed microwave reflection grating are disclosed in which the grating comprises an array of electrical conducting scattering elements having plane parallel surfaces that face in the same direction. The plane parallel faces are positioned in parallel equally-spaced planes to provide a generally stair-step, or Venetian-blind type structure. Microwave energy beamed onto the plane parallel surfaces of the array exits at a diffraction-mode angle within the reradiation pattern of the individual scattering elements of the array. Frequency steering of the exit beam in one plane of the array is provided by varying the frequency of the illuminating beam.

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Henry et al, "A Low-Loss Diffraction Grating Frequency Multiplexer", IEEE Transactions on Microwave Theory and Techniques, vol. Mtt-26, No. 6, Jun. 1978, pp. 428-433.

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