Accession Number : ADD012761

Title :   Reducing Grating Lobes due to Subarray Amplitude Tapering.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Haupt,Randy L

Report Date : 10 Feb 1987

Pagination or Media Count : 48

Abstract : Subarray amplitude tapering is a simple, lower cost method of generating low sidelobes in an antenna's far field pattern. Unfortunately, this simple technique also generates unwanted grating lobes. Placing the exact amplitude taper at the element outputs produces the desired far field pattern, but the alternative of these two techniques is a design process that entails placing amplitude tapers that are identical between corresponding elements in groups of identical subarrays. In this way, the amplitude taper approximates the desired taper much better than subarray tapering alone, yet groups of subarrays are identical so that the design remains very simple.

Descriptors :   *PATENTS, *ANTENNA RADIATION PATTERNS, *ANTENNA CONFIGURATIONS, SUPPRESSION, AMPLITUDE, FAR FIELD, LOW COSTS, LOW LEVEL, SIDELOBES, TAPER

Subject Categories : Radiofrequency Wave Propagation
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE