AC coupling circuit
AssigneeHewlett-Packard Development Company, L.P.
InventorsJeffry Yetter, Dacheng Zhou
Life of this patent
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Abstract
An AC coupling circuit is disclosed herein. An embodiment of the circuit comprises a first differential input and a second differential input. A first resistor is connected between the first differential input and the second differential input. A first capacitor is connected between the first differential input and a first differential output. A second capacitor is connected between the second differential input and a second differential output. A second resistor is connected between the first differential output and a node. A third resistor is connected between the second differential output and the node. A first potential is applied to the node.
Claims25
An AC coupling circuit comprising:
- a first differential input;
- a second differential input;
- a first resistor connected between said first differential input and said second differential input;
- a first capacitor connected between said first differential input and a first differential output;
- a second capacitor connected between said second differential input and a second differential output;
- a second resistor connected between said first differential output and a node;
- a third resistor connected between said second differential output and said node;
- and
- a first potential applied to said node.
An communication system comprising:
- a differential transmission line having an characteristic impedance associated therewith, said differential transmission line comprising a first conductor and a second conductor;
- an AC coupling circuit comprising a first differential input, a second differential input, a first differential output, and a second differential output, wherein said first differential input is electrically connected to said first conductor of said differential transmission line, and wherein said second differential input is electrically connected to said second conductor of said differential transmission line;
- and
- an electronic device electrically connected to said first differential output and said second differential output of said AC coupling circuit;
- wherein said AC coupling circuit comprises:
- a first resistor connected between said first differential input and said second differential input, wherein said first resistor matches said characteristic impedance of said differential transmission line;
- a first capacitor connected between said first differential input and said first differential output;
- a second capacitor connected between said second differential input and said second differential output;
- a second resistor connected between said first differential output and a node;
- a third resistor connected between said second differential output and said node;
- and
- a first potential applied to said node.
Dependencies are inferred from the claim text.