Accession Number:

ADA229860

Title:

Fiber Optic Feed

Descriptive Note:

Memorandum rept. 1985-1990,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

1990-11-06

Pagination or Media Count:

47.0

Abstract:

This report details a Fiber Optic Feeding FOF concept for beamforming in phased arrays. Experimental data is presented which validates the basic underlying assumptions. Elaborations on this basic concept are presented which illustrate the power of this new approach to beamforming. All radar and communications functions have a realization in the architecture, including monopulse, multiple beams on same or different frequencies, beamspace adaptivity open or closed loop, and wide-band beam and null forming. It presumes an active antenna aperture but uses TR modules containing no phase shifters. Identical TR modules are used at each of the antenna elements and which require a minimum of digitally controlled components. The architecture is appropriate for arrays on any platform and accommodates sparse andor conformal designs without the necessity of introducing significant microwave modifications. The approach can use existing state-of-the-art components to affordably implement high performance arrays. Of particular importance is the capability of forming time delay beams from an array without the use of phase shifters. rh

Subject Categories:

  • Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE