Patent ID: 7242780
Filing Date: 2007-07-10
Classification: H04B

Abstract:
1. A cable suitable for electrically connecting a source for generating signals in the audio frequency spectrum and a load, the source having an output connector comprising a first and second output terminal and the load having an input connector comprising a first and second input terminal, said cable comprising: a first conductor having a first end and a second end, and having an input terminal near said first end suitable for electrically connecting to the first output terminal of the source, and having an output terminal near the second end, suitable for electrically connecting to the first input terminal of the load; a second conductor having a first end and a second end, and having an input terminal near said fist end suitable for electrical connecting to the second output terminal of the source, and having an output terminal near said second end suitable for electrically connecting to the second input terminal of the load; an input connector electrically coupled to the input terminals of the first and second conductor, suitable for effecting an electrical connection between the input terminal of the first conductor and the first output terminal of the source and between the input terminal of the second conductor and the second output terminal of the source; an output connector electrically coupled to the output terminals of the first and second conductor, suitable for effecting an electrical connection between the output terminal of the first conductor and the first input terminal of the load and between the output terminal of the second conductor and the second input terminal of the load, a network comprising: said capacitive element and resistive elements having values such that the phase angle of the circuit is approximately −45 degrees at a selected frequency within the audio frequency range and such that the measured impedance of the network at all frequencies in a predetermined frequency range is equal to or greater than 0.20 MΩ, wherein said circuit is electrically coupled between the first conductor and the second conductor.