Parabola The geometric shape that has the property of reflecting all signals parallel to its axis to one point, the focal point. A parabola of revolution. Classical shape of a satellite antenna's reflector. Paramp Parametric Amplifier. The attenuation that a signal undergoes in travelling over a path between two points.
Path loss varies inversely as the square of the distance traveled.
PCM Pulse Code Modulation. Coding system for digital audio transmission. PCS Personal Communications Service. New digital wireless telephone technology, with smaller and less expensive outdoor cells and consumer telephone sets than current cellular service. Percent Conductivity Conductivity of a material expressed as a percentage of that of copper.