Abstract: Two or more antenna elements are arranged in the vertical direction to give vertical spatial adaptivity to a wireless discrete multitone spread spectrum communications system. The system is based on a combination of Discrete Multitone Spread Spectrum (DMT-SS) and multi-element adaptive antenna array technologies. This enables the automatic positioning of a beam in the vertical direction to position nulls where interferers are located on the same azimuth but are separated in elevation.

Abstract: A carrier of replacement batteries for a portable electronic device or the like. The carrier includes a housing defining receptacles adapted to receive and seat the replacement batteries and a plate incorporating strips of adhesive or the like material which allow the carrier to be secured directly to the surface of the device for which the replacement batteries may be needed at the point-of-use. In one embodiment, rotatable panels with ears hold the batteries in place in the carrier and clips are adapted to hold the panels down against the plate when the carrier is not in use. In another embodiment, rotatable collars are adapted to surround and hold the batteries in the receptacles.

Abstract: Two or more antenna elements are arranged in the vertical direction to give vertical spatial adaptivity to a wireless discrete multitone spread spectrum communications system. The system is based on a combination of Discrete Multitone Spread Spectrum (DMT-SS) and multi-element adaptive antenna array technologies. This enables the automatic positioning of a beam in the vertical direction to position nulls where interferers are located on the same azimuth but are separated in elevation.