Reducing signal interference

• US 8,503,940 B2
• Filed: 02/15/2012
• Issued: 08/06/2013
• Est. Priority Date: 12/14/2004
• Status: Expired due to Fees

• Current Assignee: Quellan, Inc. (Renesas Electronics Corporation)
• Original Assignee: Quellan, Inc. (Renesas Electronics Corporation)
• Inventors: Gebara, Edward, Kim, Andrew Joo, Laskar, Joy, Stelliga, Anthony, Tentzeris, Emmanouil M.
• Primary Examiner(s): Pham, Tuan
• Application Number:
  US13/397,001
• Publication Number:
  US 20120149306A1
• Time in Patent Office: 538 Days
• Field of Search: 455/501, 455/63.1, 455/114.1, 455/114.2, 455/296, 375/346
• US Class Current: 455/63.1
• CPC Class Codes: H04B 1/123 using adaptive balancing or compensation means adaptive filter circuits and algorithms H03H
• CPC Class Codes: H04B 1/7103 the interference being multiple access interference

Abstract

A method for interference suppression, including receiving a sample of an aggressor communication signal from a sensor embedded in a flex circuit, emulating interference that the aggressor communication signal imposes on a victim communication signal, and suppressing the imposed interference in response to applying the emulated interference to the victim communication signal. In other aspects, the flex circuit comprises a plurality of traces running substantially parallel to one another along a surface of the flex circuit, and the sensor comprises one of the plurality of traces and one of a plurality of traces of another flex circuit. In still other aspects, the flex circuit comprises a plurality of traces running substantially parallel to one another and the sensor comprises a trace of the flex circuit running perpendicular to the plurality of traces running substantially parallel to one another.

Claims

1. A method for interference suppression, comprising the steps of:

receiving a sample of an aggressor communication signal from a sensor embedded in a flex circuit,

wherein the flex circuit comprises a plurality of traces running substantially parallel to one another and the sensor,

wherein the sensor comprises a trace of the flex circuit running substantially perpendicular to the plurality of traces, and

wherein the trace of flex circuit is dedicated to sensing electromagnetic energy;

via processing the received sample, emulating interference that the aggressor communication signal imposes on a victim communication signal; and

suppressing the imposed interference in response to applying the emulated interference to the victim communication signal.

2. The method of claim 1, wherein the flex circuit comprises a flex cable.

3. The method of claim 1, wherein the trace of the flex circuit runs substantially perpendicular to the plurality of traces adjacent a terminal end of the flex circuit.

4. The method of claim 1, wherein the trace of the flex circuit crosses the plurality of traces adjacent a digital signal processing chip.

5. The method of claim 1, wherein emulating interference comprises emulating the imposed interference based on a signal model of an interference effect comprising at least one modeling parameter.

6. The method of claim 1, wherein emulating interference comprises adjusting the aggressor communication signal in magnitude, phase, or delay.

7. A method for interference suppression, comprising the steps of:

receiving an aggressor communication signal from a sensor embedded in a flex circuit

wherein the flex circuit comprises a plurality of traces running substantially parallel to one another and the sensor,

wherein the sensor comprises a trace of the flex circuit that extends across the plurality of traces, and

wherein the trace of the flex circuit that extends across the plurality of traces is dedicated to sensing electromagnetic energy;

via processing the received sample, emulating interference that the aggressor communication signal imposes on a victim communication signal; and

suppressing the imposed interference based on the emulated interference.

8. The method of claim 7, wherein emulating interference comprises emulating the imposed interference based on a signal model of an interference effect comprising at least one modeling parameter.

9. The method of claim 7, wherein emulating interference comprises adjusting the aggressor communication signal in magnitude, phase, or delay.

10. The method of claim 7, wherein the flex circuit comprises a flex cable.

11. The method of claim 7, wherein the sensor is physically separate from the plurality of traces.

12. The method of claim 7, wherein the sensor is inductively isolated from the plurality of traces below a threshold frequency and inductively coupled to the plurality of traces above the threshold frequency.

13. The method of claim 7, wherein the sensor provides a signal to an interference compensation circuit, the signal indicative of whether the plurality of traces are actively transmitting the aggressor communication signal.