The ornamental design for a dual-array yagi antenna, as shown and described
.
FIG. 1 is a front isometric view of a dual-array yagi antenna showing my
design;
FIG. 2 is a side view in elevation of the dual-array yagi antenna of FIG. 1
as seen from the lower right-hand side of FIG. 1. The left-hand side view
is a left-to-right and top-to-bottom mirror image of FIG. 2.
FIG. 3 is a top plan view of the dual-array yagi antenna of FIG. 1. The
bottom plan view is identical to the top plan view;
FIG. 4 is an enlarged rear view in elevation of the dual-array yagi antenna
of FIG. 1; and,
FIG. 5 is an enlarged front view in elevation of the dual-array yagi
antenna of FIG. 1.