. The Bell System technical journal . n = 2n=3n=4 n = oo Fig. 10—Comparison of finilc and infinite arrays within a total distance ot onewave-length, and within a total phase interval of one period DIRECTIVE DIAGRAMS OF ANTENNA ARRAYS 305 A model of tlu upper half ol ihe space characteristic of an arrayof four antennae located at the corners of a square is shown by Fig. 11,each side of the square having the parameters (|X, 07). Below themodel is shown the directive diagram in the i^lane of the eirray, whicii. Fig. 11—Model of the space characteristic for an array of four antennae located at the
. The Bell System technical journal . n = 2n=3n=4 n = oo Fig. 10—Comparison of finilc and infinite arrays within a total distance ot onewave-length, and within a total phase interval of one period DIRECTIVE DIAGRAMS OF ANTENNA ARRAYS 305 A model of tlu upper half ol ihe space characteristic of an arrayof four antennae located at the corners of a square is shown by Fig. 11,each side of the square having the parameters (|X, 07). Below themodel is shown the directive diagram in the i^lane of the eirray, whicii. Fig. 11—Model of the space characteristic for an array of four antennae located at the corners of a square, with a separation of one-half wave-length between antennae on each side of the square, and with zero phase difference is identical with the base of the model, together with a representationof the array itself. In the horizontal plane the maximum ampli-tude is slightly less than 1/5, occurring along the diagonals of thesquare; the amplitude reaches its absolute maximum of unity onlyin the vertical direction. 306 SYSTEM TFCflNIC/IL JOURNAL Fig. 12 shows a model of the upper half of the space characteristicof an array of 32 antennae located along the diagonals of a square,with the parameters (^X, OT) in each diagonal. This space character-istic is a complicated surface, the main features of which are shownl)\ (he model, the smaller lobes not being shown clearly in detail. In
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
