System for reducing signal interference

• US 8,135,350 B2
• Filed: 07/26/2011
• Issued: 03/13/2012
• Est. Priority Date: 12/14/2004
• Status: Expired due to Fees

• Current Assignee: Intersil Americas LLC (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:
  US13/190,746
• Publication Number:
  US 20110281524A1
• Time in Patent Office: 231 Days
• Field of Search: 455/63.1, 455/67.11, 455/278.1, 455/296, 455/114.2, 455/570, 375/100, 375/101, 375/114
• 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 system for suppressing interference imposed on a victim communication signal by an aggressor communication signal including a circuit that comprises an input port, an output port, and a signal processing circuit connected between the input port and the output port, the signal processing circuit being operative to produce an interference compensation signal at the output port, for application to the victim communication signal, via processing a sample of the aggressor communication signal transmitted through the input port, and the input port being configured to connect to a sampling system that includes a first circuit trace running along a surface of a flex circuit of a portable wireless device that is dedicated to sensing the aggressor communication signal flowing on a second circuit trace running along the surface of the flex circuit.

Claims

1. A system for suppressing interference imposed on a victim communication signal by an aggressor communication signal, the system comprising

a circuit that comprises an input port, an output port, and a signal processing circuit connected between the input port and the output port,

wherein the signal processing circuit is operative to produce an interference compensation signal at the output port, for application to the victim communication signal, via processing a sample of the aggressor communication signal transmitted through the input port, and

wherein the input port is configured to connect to a sampling system that comprises:

a first circuit trace, running along a surface of a flex circuit of a portable wireless device, that is dedicated to sensing the aggressor communication signal flowing on a second circuit trace running along the surface of the flex circuit.

2. The system of claim 1, wherein the first circuit trace extends substantially adjacent the second circuit trace on the flex circuit.

3. The system of claim 1, wherein the first circuit trace crosses over the second circuit trace adjacent a signal processing chip.

4. The system of claim 1, wherein the first circuit trace crosses under the second circuit trace adjacent a signal processing chip.

5. The system of claim 1, wherein the first circuit trace crosses the second circuit trace at a terminal end of a signal bus.

6. The system of claim 1, wherein the second circuit trace crosses the first circuit trace adjacent a terminal end of a data bus.

7. The system of claim 1, wherein the aggressor communication signal is operative to convey data from an imaging device of the portable wireless device to a digital signal processing circuit.

8. The system of claim 1, wherein the aggressor communication signal is operative to convey digital signals from a digital signal processing circuit to a display of the portable wireless device.

9. The system of claim 1, wherein the portable wireless device comprises a cellular device, a mobile phone, a cellular phone, a hand-held radio, a handset, a radio handset, a cellular telephone, or a personal data assistant.

10. The system of claim 1, wherein the output port connects to a general/global system for mobile communications.

11. The system of claim 1, wherein the first circuit trace and the second circuit trace are embedded in the flex circuit.