Anlenna device and method concerned

Abstract

An apparatus for treating waste includes a vessel and DC and / or AC plasma torches with a variable flame mounted with the vessel. The flames generated by the torches can be adjusted depending on the characteristics of the waste being treated. Waste can be introduced into the vessel and heated with energy from the flame. The energy can melt or vitrify the inorganic portion of the waste and gasify and dissociate the organic portion of the waste. This dissociation can destroy the hazardous or toxic constituency of the waste.

Description

technical field

[0001] The invention relates to an antenna arrangement comprising an antenna section with a plurality of radiating elements arranged in sub-arrays. The invention also relates to a method for controlling beamforming in an antenna arrangement comprising an antenna section which in turn comprises a plurality of radiating elements which may be arranged in a sub-array. Background technique

[0002] The antennas used today on radio base stations of cellular mobile communication systems are often of the sectoral type. Three, six or more such antennas together cover 360 degrees in azimuth. It is generally desirable to be able to extend the coverage of a radio base station. But a high-gain antenna is required. In general, the longer the antenna mechanically, the easier it is to provide higher gain without changing the azimuth beamwidth. However, even though mechanically longer antennas are attractive for the reasons described above, there are several disadvantages...

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