| 摘要 |
A dual polarized antenna couplet, comprised of a vertical quarter-wavelength radiator driven at its lower end and centered on a half-wavelength horizontal dipole radiator drooping its ends about 45 DEG from the center where it is driven in phase with the vertical radiator, produces a polarized wavefront at an angle between the vertical and the horizontal, such as 45 DEG when both are driven equally, with 1.5 db bi-directional gain in the horizontal pattern and in the vertical pattern as well. A similar parasitic couplet is used as a reflector behind the driven couplet, and two or more parasitic couplets are used as directors in front of the driven couplet. The elements of the antenna are coated with dielectric material to achieve a shortening effect of about 11% over the normal lengths of the antenna elements otherwise required.
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