METHOD AND SYSTEM FOR MITIGATING LEAKAGE OF A 60 GHZ TRANSMITTED SIGNAL BACK INTO AN RF INPUT OF A 60 GHZ DEVICE

• US 20120083215A1
• Filed: 09/30/2010
• Published: 04/05/2012
• Est. Priority Date: 09/30/2010
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Ahmadreza, Rofougaran, Maryam
• Granted Patent: US 8,977,219 B2
• Time in Patent Office: Days
• US Class Current: 455/42
• CPC Class Codes: H04B 1/525 with means for reducing leakage of transmitter signal into the receiver
• CPC Class Codes: H04B 7/0691 using subgroups of transmit antennas

Abstract

Methods and systems for antenna switching for mitigating leakage of a 60 GHz transmitted signal back into an RF input of a 60 GHz device are disclosed and may include configuring one or more antennas in the plurality of remote RF modules based on a measured signal characteristic, wherein the RF modules receive IF signals via coaxial lines. In-phase (I) and quadrature phase (Q) signals may be generated from the received IF signals. The generated I and Q signals may be summed before being transmitted via the antennas. The received IF signals may be up-converted into first I and Q signals, filtered, and up-converted a second time into the generated I and Q signals. Control signals for the RF modules may be communicated utilizing the coaxial lines. A local oscillator frequency may be configured for the up-conversion of signals via the communicated control signals.

Claims

1. A method for wireless communication, the method comprising:

in a wireless communication device comprising a plurality of remote RF modules;

configuring one or more antennas in said plurality of remote RF modules based on a measured signal characteristic, wherein each of said plurality of remote RF modules receive IF signals via one or more coaxial lines;

generating in-phase (I) and quadrature phase (Q) signals from said received IF signals;

summing said I and Q signals; and

transmitting said summed up-converted I and Q signals via said configured one or more antennas.

2. The method according to claim 1, comprising up-converting said received IF signals into first in-phase and quadrature signals.

3. The method according to claim 2, comprising filtering said first in-phase and quadrature phase signals.

4. The method according to claim 3, comprising up-converting said filtered first in-phase and quadrature signals into said generated in-phase and quadrature signals.

5. The method according to claim 4, comprising communicating control signals for said plurality of remote RF modules utilizing said one or more coaxial lines.

6. The method according to claim 5, comprising configuring a local oscillator frequency for said up-conversion of said received IF signals and said up-conversion of said filtered first in-phase and quadrature phase signals via said communicated control signals.

7. The method according to claim 5, comprising configuring said filtering of said first in-phase and quadrature phase signals utilizing said communicated control signals.

8. The method according to claim 1, comprising tapping said IF signals in said one or more coaxial lines at taps coupled to said each of said plurality of remote RF modules.

9. The method according to claim 1, comprising generating said RF signals from IF signals from one or more baseband signals.

10. The method according to claim 1, wherein said output RF signals comprise 60 GHz signals.

11. A system for wireless communication, the system comprising:

one or more circuits for use in a wireless communication device, said one or more circuits being operable to;

configure one or more antennas in said plurality of remote RF modules based on a measured signal characteristic, wherein each of said plurality of remote RF modules receive IF signals via one or more coaxial lines;

configure one or more antennas in said plurality of remote RF modules based on a measured signal characteristic, wherein each of said plurality of remote RF modules receive IF signals via one or more coaxial lines;

generate in-phase (I) and quadrature phase (Q) signals from said received IF signals;

sum said I and Q signals; and

transmit said summed up-converted I and Q signals via said configured one or more antennas.

12. The system according to claim 11, wherein said one or more circuits are operable to up-convert said received IF signals into first in-phase and quadrature signals.

13. The system according to claim 12, wherein said one or more circuits are operable to filter said in-phase and quadrature phase signals.

14. The system according to claim 13, wherein said one or more circuits are operable to up-convert said filtered first in-phase and quadrature signals into said generated in-phase and quadrature signals.

15. The system according to claim 14, wherein said one or more circuits are operable to communicate control signals for said plurality of remote RF modules utilizing said one or more coaxial lines.

16. The system according to claim 15, wherein said one or more circuits are operable to configure a local oscillator frequency for said up-conversion of said received IF signals and said up-conversion of said filtered first in-phase and quadrature phase signals via said communicated control signals.

17. The system according to claim 15, wherein said one or more circuits are operable to configure said filtering of said first in-phase and quadrature phase signals utilizing said communicated control signals.

18. The system according to claim 11, wherein said one or more circuits are operable to tap said IF signals in said one or more coaxial lines at taps coupled to said each of said plurality of remote RF modules.

19. The system according to claim 11, wherein said one or more circuits are operable to generate said RF signals from IF signals from one or more baseband signals.

20. The system according to claim 11, wherein said output RF signals comprise 60 GHz signals.