Accession Number : AD0921703

Title :   VHF-UHF Phased Array Techniques. Part II. Mutual Effects in Finite Arrays of Slots.

Descriptive Note : Technical rept. 1 Sep 72-31 Aug 73,

Corporate Author : MICHIGAN UNIV ANN ARBOR RADIATION LAB

Personal Author(s) : Hidayet, Mohamed A. ; Lyon, John A. M. ; Loftis, Charles B., Jr

Report Date : FEB 1974

Pagination or Media Count : 142

Abstract : The analysis of finite planar arrays of slots is developed. This analysis includes as special cases the linear array of slots with weak coupling and the linear array with strong coupling. This strong coupling case has not been available heretofore in the literature. Likewise the analysis of the finite planar array is presented for the first time in this report. The degenerate or special case of the linear array with the weak coupling of slots is presented with experimental confirmation of results. The experiments of others were used to verify the finite planar array analysis. A complete and error free program has been written in Fortran IV language during this study. This program will enable the sponsor to fully utilize the advanced methods of calculation of array performance without the necessity of making expensive experimental models of planar arrays. This type of early design calculation also makes it possible to avoid 'blind spots' in the projected array performance. The analysis may be adapted to arrays using other than slot elements through the use of the same basic approximation methods as well as with full use of reciprocity and symmetry.

Descriptors :   (*PHASED ARRAYS, LINEAR ARRAYS), (*SLOT ANTENNAS, COUPLING(INTERACTION)), COMPUTER PROGRAMS, BOUNDARY VALUE PROBLEMS, VERY HIGH FREQUENCY, ULTRAHIGH FREQUENCY, ANTENNA RADIATION PATTERNS, ANTENNA ARRAYS, PHASE SHIFT CIRCUITS, ELECTROMAGNETIC FIELDS, MATRICES(MATHEMATICS), ANTENNA FEEDS, WAVEGUIDES, X BAND.

Subject Categories : Electrical and Electronic Equipment
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE