Transmission trace structure
System and methods are disclosed for creating and using a trace structure. System and methods are disclosed for creating and using low impedance differential trace structures. A trace structures comprises at least two substantially collinear traces electrically connected along the length of the traces by at least one connection. The trace structures may be readily manufactured using cost-effective manufacturing techniques and tolerances.
1 . A transmission system comprising a first trace structure comprising at least two substantially collinear traces electrically connected along the length of the traces by at least one connection wherein the same signal is transmitted on the collinear traces.
2 . The transmission system of claim 1 further comprising a second trace structure positioned substantially parallel to and adjacent to the first trace structure to allow coupling between the first and second trace structures when signals are transmitted on the first and second trace structures, said second set of traces comprising at least two substantially collinear traces electrically connected along the length of the traces by at least one connection.
3 . The transmission system of claim 2 wherein the at least one electrical connection of the first trace structure and the at least one electrical connection of the second trace structure are vias.
4 . The apparatus of claim 2 wherein at least one of the first and second trace structures further comprises at least one additional trace substantially collinear with the at least two substantially collinear traces and is electrically connected along the length of the trace to the trace structure by at least one connection.
5 . The transmission system of claim 2 wherein the at least two substantially collinear traces of the first trace structure are electrically connected along the length of the traces by a plurality of connections and the at least two substantially collinear traces of the second trace structure are electrically connected along the length of the traces by a plurality of connections.
6 . The transmission system of claim 5 wherein the first and second trace structures are on a printed circuit board.
7 . The transmission system of claim 6 wherein the plurality of connections of the first trace structure and the plurality of connections of the second trace structure are vias.
8 . The transmission system of claim 2 wherein the first and second trace structures can be used for differential signaling.
9 . An apparatus for providing transmission trace structures comprising:
a first trace structure comprising at least two substantially collinear traces electrically connected along the length of the traces by at least one connection; and
a second trace structure positioned substantially parallel to and adjacent to the first trace structure to allow coupling between the first and second trace structures when signals are transmitted on the first and second trace structures, said second set of traces comprising at least two substantially collinear traces electrically connected along the length of the traces by at least one connection.
10 . The apparatus of claim 9 wherein at least one of the first and second trace structures further comprises at least one additional trace substantially collinear with the at least two substantially collinear traces and is electrically connected along the length of the trace to the trace structure by at least one connection.
11 . The apparatus of claim 9 wherein the first and second trace structures are on a printed circuit board.
12 . The apparatus of claim 11 wherein the at least one connection of the first and second trace structures are vias.
13 . The apparatus of claim 9 wherein the first and second trace structures can be used for differential signaling.
14 . A method for making trace structures comprising the steps of:
creating a first pair of traces on a first layer, said first pair of traces comprising a first trace and a first complementary trace positioned adjacent to each other to allow coupling between them when signals are transmitted on the traces;
creating a second pair of traces substantially collinear with the first pair of traces on a second layer, said second pair of traces comprising a second trace and a second complementary trace positioned adjacent to each other to allow coupling between them when signals are transmitted along the traces;
connecting the first trace with the second trace along the length of the traces by at least one electrical connection; and
connecting the first complimentary trace with the second complementary trace along the length of the traces by at least one electrical connection.
15 . The method of claim 14 wherein the at least one electrical connection of the first and second trace structures are vias.
16 . The method of claim 14 wherein the first and second trace structures are created on a printed circuit board.
17 . A method for transmitting signals comprising the steps of:
transmitting a first signal on a first trace structure, said first trace structure comprising at least two substantially collinear traces electrically connected along the length of the traces by at least one connection; and
transmitting a second signal on a second trace structure, said second trace structure positioned substantially parallel to and adjacent to the first trace structure to allow coupling between the first and second trace structures when the first and second signals are transmitted on the first and second trace structures, said second set of traces comprising at least two substantially collinear traces electrically connected along the length of the traces by at least one connection.
18 . The method of claim 17 wherein the first and second trace structures are on a printed circuit board.
19 . The method of claim 18 wherein the at least one connection of the first and second trace structures are vias.
20 . The method of claim 17 wherein the first signal and the second signal can create a differential signal.