DIELECTRIC SLOT ANTENNA USING CAPACITIVE COUPLING

摘要

The present invention concerns a slot antenna for an electronic device, e.g. a set top box. A printed circuit board (210) comprising a dielectric material (310, 320, 330, 340, 350) and electrodes (240, 360) extends into a rectangular slot (120) in the metal enclosure (110) of the device such that the electrodes are coupled with locations on opposite edges of the long dimension of the rectangular slot. The coupling may be capacitively in order to affect the level of coupling or to optimize the driving point return loss. The presence of the dielectric in the slot allows the use of a shorter slot for a given wavelength.

主权项

1. An apparatus comprising:
a metal enclosure comprising a rectangular slot; a printed circuit board comprising a dielectric material; and two electrodes integral to the printed circuit board; wherein a portion of the printed circuit board comprising the dielectric material extends into the rectangular slot in the metal enclosure such that the electrodes are coupled with locations on opposite edges of the long dimension of the rectangular slot.