PURPOSE: To extend a frequency band with a low axial ratio and a frequency band with high matching. ;CONSTITUTION: Four loops 2 from peripheral intersections on which two straight lines having a 90° angle difference intersec with the center of a patch 1 are formed along the circumference. power is fed from a microstrip line 7 constituted under a ground plate 4 through a dielectric plate 6 to the patch 1 through a slot 5.;COPYRIGHT: (C)1995,JPO
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