Accession Number:

ADB091746

Title:

Application of Integrated Optics and Fiber Optics to Phased-Array Antennas.

Descriptive Note:

Rept. for Jan-May 84,

Corporate Author:

ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY

Personal Author(s):

Report Date:

1984-05-01

Pagination or Media Count:

43.0

Abstract:

Time-delay steering of a 2-5 GHz microwave phased-array antenna is described. This report suggests that the antenna beam can be formed and steered by programmable optical time-delay elements. These delay elements would be part of a fiber-optical feed system for the antenna, a feed that requires microwave-to-optical and optical-to-microwave conversion. One programmable delay elelement is associated with each of the N x M microwave radiating elements in the array. The result is a broadband, agile, electronically steered, computer-controlled antenna. Because the programmable devices are fast, the antennas pointing direction could be updated in less than 1 microsecond. To implement the delay devices, a combination of integrated optics and fiber optics is proposed. Fiber-optic paths of differing lengths would provide the required delays in the 0.1-to-20 nsec range by means of the 5 nsecm optical propagation time per unit length of fiber. Integrated optical switches would be used to select the desired fiber paths. Keywords include Integrated optics Fiber optics Phased array antennas Electro-optics Time-delay beamsteering and Optical switching TiLiNb03.

Subject Categories:

  • Electrical and Electronic Equipment
  • Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE