Patent ID: 7058172

Claim:
A bidirectional lone distance driver for use with differential signals transmitted over a communications wire, comprising: a forward transmission circuit that receives a first differential signal from a first signal source, comprising: a first communications connector that can couple to the communications wire to receive the first differential signals; an impedance matching circuit, coupled to the first communications connector, to attenuate signal reflection within the received differential signal; a power amplifying circuit, coupled to the impedance matching circuit, to amplify the differential signal after processed by the impedance matching circuit; a frequency compensation circuit, coupled to the power amplifying circuit, to balance frequency amplitudes within the differential signal; and a second impedance matching circuit, coupled to the frequency compensation circuit, to match impedance of the differential signal prior to outputting the differential signal on the communications wire to a signal destination; and a backward transmission circuit, coupled to the first communications connector to receive a second differential signal to be transmitted to the first signal source, comprising: a second communications connector coupled to the first signal source and a second signal source; a first backward transmission impedance matching circuit that can couple to the second communications connector to attenuate signal reflection within the second differential signal; a power amplifying circuit, coupled to the first backward transmission impedance matching circuit of the backward transmission circuit, to amplify the second differential signal after processing by the second impedance matching circuit; a backward transmission frequency compensation circuit, coupled to the power amplifying circuit, to balance frequency amplitudes within the second differential signal; and a second backward transmission impedance matching circuit, coupled to the backward transmission frequency compensation circuit, to match impedance of the second differential signal prior to outputting the second differential signal on the communications wire to the first different signal source, wherein the impedance matching circuit comprises a resistance circuit of T shape and wherein the frequency compensation comprises an inductance circuit coupled to the power amplifier, the second impedance matching circuit, and to the resistance circuit.