Patent ID: 6760380
Filing Date: 2004-07-06
Classification: H04L,H04M

Abstract:
A circuit for transmitting an input voltage signal waveform as a series of current pulses onto a communication line comprising:a converter for receiving said input voltage signal waveform and generating an output in response thereto; a transmitter responsive to said output of said converter for transmitting said series of current pulses on said communication line; wherein said converter includes, a first common emitter transistor; first, second and third capacitors, each having two ends; a first end of said first capacitor receptive to said input voltage signal waveform; a second end of said first capacitor and first end of said second capacitor coupled to a base of said first common emitter transistor; a resistor coupled between a collector of said first common emitter transistor and a voltage input; a first end of said third capacitor coupled to said collector of said common emitter transistor and said second end of said third capacitor coupled to said second end of said second capacitor; and, a resistor coupled to said second ends of said second and third capacitors.