Embodiments of the invention provide a device with a hard mask layer between first and second ILD layers. A far-infrared ray is released by a far-infrared releasing substance in the composition so as to induce evaporation of the solution. According to the invention the base station makes a selection between beamforming, space-time coding or MIMO for a next downlink frame. A plurality of radially extending flanges is formed about the circumference of the distal end. The droop compensator may be made using recursive filters, as opposed to large tap FIR filters, which may result in less memory consumption and decreased power consumption.