RECEIVER UTILIZING MULTIPLE RADIATION PATTERNS TO DETERMINE ANGULAR POSITION

• US 20100151810A1
• Filed: 05/30/2009
• Published: 06/17/2010
• Est. Priority Date: 12/13/2008
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: GRAU BESOLI, ALFRED, ALEXOPOULOS, NICOLAOS G., CASTANEDA, JESUS
• Granted Patent: US 8,588,805 B2
• Time in Patent Office: Days
• US Class Current: 455/311
• CPC Class Codes: H04B 17/104 of other parameters, e.g. DC offset, delay or propagation times
• CPC Class Codes: H04B 7/084 Equal gain combining, only phase adjustments antenna beam scanning or forming by phase or amplitude control H01Q3/26, e.g. phased arrays

Abstract

A receiver includes an antenna array, an angular positioning module, a low noise amplifier module, and a down conversion module. The antenna array is operable to receive an inbound wireless signal. The angular positioning module is operable to: receive a plurality of received inbound wireless signals from the antenna array; determine angular position of a source of the inbound wireless signal from at least some of the plurality of received inbound wireless signals based on a first radiation pattern and a second radiation pattern of the plurality of received inbound wireless signals; and output a representation of the inbound wireless signal. The low noise amplifier module is operably coupled to amplify the representation of the inbound wireless signal to produce an amplified inbound wireless signal. The down conversion module is operably coupled to convert the amplified inbound wireless signal into a baseband or near baseband signal.

Claims

1. A receiver comprises:

an antenna array operable to receive an inbound wireless signal;

an angular positioning module coupled to the antenna array, wherein the angular positioning module is operable to;

receive a plurality of received inbound wireless signals from the antenna array;

determine angular position of a source of the inbound wireless signal from at least some of the plurality of received inbound wireless signals based on a first radiation pattern and a second radiation pattern of the plurality of received inbound wireless signals; and

output a representation of the inbound wireless signal;

a low noise amplifier module operably coupled to amplify the representation of the inbound wireless signal to produce an amplified inbound wireless signal; and

a down conversion module operably coupled to convert the amplified inbound wireless signal into a baseband or near baseband signal.

2. The receiver of claim 1, wherein the angular positioning module comprises:

a plurality of phase shifters operably coupled to phase shift the plurality of received inbound wireless signals to produce a plurality of phase shifted inbound wireless signals;

a sum-difference beamforming network operably coupled to generate a sum signal and a difference signal from the plurality of phase shifted inbound wireless signals, wherein the sum signal is provided as the representation of the inbound wireless signal; and

a control module operably coupled to determine angular position of the inbound wireless signal based on the sum signal and the difference signal.

3. The receiver of claim 1, wherein the angular positioning module comprises:

a plurality of phase shifters operably coupled to phase shift the plurality of received inbound wireless signals to produce a plurality of phase shifted inbound wireless signals;

a sum-difference patterns network operably coupled to generate a sum signal and a difference signal from at least two of the plurality of phase shifted inbound wireless signals;

a control module operably coupled to determine the angular position of the source of the inbound wireless signal based on the sum signal and the difference signal;

an output module operably coupled to generate the representation of the inbound wireless signal based on the plurality of phase shifted inbound wireless signals.

4. The receiver of claim 3, wherein the sum-difference patterns network comprises:

a 180 hybrid circuit.

5. The receiver of claim 1, wherein the angular positioning module comprises:

a plurality of phase shifters operably coupled to phase shift the plurality of received inbound wireless signals to produce a plurality of phase shifted inbound wireless signals;

a sequential sum-difference beamforming network operably coupled to sequentially generate a sum signal and a difference signal from the plurality of phase shifted inbound wireless signals, wherein the sum signal is provided as the representation of the inbound wireless signal; and

a control module operably coupled to determine angular position of the inbound wireless signal based on the sum signal and the difference signal.

6. The receiver of claim 5, wherein the sequential sum-difference beamforming network comprises:

a summing module operably coupled to sum the plurality of phase shifted inbound wireless signals to produce a sum component;

a difference module operably coupled to generate a difference component from the plurality of phase shifted inbound wireless signals;

a least one 1-bit phase shifter operably coupled to invert or not invert the difference component to produce a phase shifted difference component; and

a combining module operably coupled to combine the sum component and the phase shifted difference component to produce the sum signal and the difference signal.

7. The receiver of claim 1, wherein the antenna array comprises:

a linear antenna array.

8. The receiver of claim 1 further comprises:

at least one integrated circuit that contains the angular positioning module, the low noise amplifier module, and the down conversion module.

9. The receiver of claim 1 further comprises the angular positioning module operably coupled to:

adjust the first and second radiation patterns to adjust reception strength of the inbound wireless signal.

10. The receiver of claim 1 further comprises:

the antenna array is configured in an end-fire manner.

11. An antenna structure comprises:

an antenna array operable to receive an inbound wireless signal; and

an angular positioning module coupled to the antenna array, wherein the angular positioning module is operable to;

receive a plurality of received inbound wireless signals from the antenna array; and

determine angular position of a source of the inbound wireless signal from at least some of the plurality of received inbound wireless signals based on a first radiation pattern and a second radiation pattern of the plurality of received inbound wireless signals.

12. The antenna structure of claim 11, wherein the angular positioning module comprises:

a plurality of phase shifters operably coupled to phase shift the plurality of received inbound wireless signals to produce a plurality of phase shifted inbound wireless signals;

a sum-difference beamforming network operably coupled to generate a sum signal and a difference signal from the plurality of phase shifted inbound wireless signals; and

a control module operably coupled to determine angular position of the inbound wireless signal based on the sum signal and the difference signal.

13. The antenna structure of claim 11, wherein the angular positioning module comprises:

a plurality of phase shifters operably coupled to phase shift the plurality of received inbound wireless signals to produce a plurality of phase shifted inbound wireless signals;

a sum-difference patterns network operably coupled to generate a sum signal and a difference signal from at least two of the plurality of phase shifted inbound wireless signals; and

a control module operably coupled to determine the angular position of the source of the inbound wireless signal based on the sum signal and the difference signal.

14. The antenna structure of claim 11, wherein the angular positioning module comprises:

a plurality of phase shifters operably coupled to phase shift the plurality of received inbound wireless signals to produce a plurality of phase shifted inbound wireless signals;

a sequential sum-difference beamforming network operably coupled to sequentially generate a sum signal and a difference signal from the plurality of phase shifted inbound wireless signals; and

a control module operably coupled to determine angular position of the inbound wireless signal based on the sum signal and the difference signal.

15. The antenna structure of claim 14, wherein the sequential sum-difference beamforming network comprises:

a summing module operably coupled to sum the plurality of phase shifted inbound wireless signals to produce a sum component;

a difference module operably coupled to generate a difference component from the plurality of phase shifted inbound wireless signals;

a least one 1-bit phase shifter operably coupled to invert or not invert the difference component to produce a phase shifted difference component; and

a combining module operably coupled to combine the sum component and the phase shifted difference component to produce the sum signal and the difference signal.

16. The antenna structure of claim 11 further comprises the angular positioning module operably coupled to:

adjust the first and second radiation patterns to adjust reception strength of the inbound wireless signal.

17. The antenna structure of claim 11 further comprises:

the antenna array is configured in an end-fire manner.

18. A video gaming receiver comprises:

an antenna array operable to receive an inbound wireless signal from a video gaming object;

an angular positioning module coupled to the antenna array, wherein the angular positioning module is operable to;

receive a plurality of received inbound wireless signals from the antenna array;

determine angular position of the source of the inbound wireless signal from at least some of the plurality of received inbound wireless signals based on a first radiation pattern and a second radiation pattern of the plurality of received inbound wireless signals;

output a representation of the inbound wireless signal;

a low noise amplifier module operably coupled to amplify the representation of the inbound wireless signal to produce an amplified inbound wireless signal;

a down conversion module operably coupled to convert the amplified inbound wireless signal into a baseband or near baseband signal; and

a baseband processing module operably coupled to convert the baseband or near baseband signal into video gaming data.

19. The video gaming receiver of claim 18, wherein the angular positioning module comprises:

a plurality of phase shifters operably coupled to phase shift the plurality of received inbound wireless signals to produce a plurality of phase shifted inbound wireless signals;

a sum-difference beamforming network operably coupled to generate a sum signal and a difference signal from the plurality of phase shifted inbound wireless signals, wherein the sum signal is provided as the representation of the inbound wireless signal; and

a control module operably coupled to determine the angular position of the source of the inbound wireless signal based on the sum signal and the difference signal.

20. The video gaming receiver of claim 18, wherein the angular positioning module comprises:

a plurality of phase shifters operably coupled to phase shift the plurality of received inbound wireless signals to produce a plurality of phase shifted inbound wireless signals;

a sum-difference patterns network operably coupled to generate a sum signal and a difference signal from at least two of the plurality of phase shifted inbound wireless signals;

a control module operably coupled to determine angular position of the inbound wireless signal based on the sum signal and the difference signal;

an output module operably coupled to generate the representation of the inbound wireless signal based on the plurality of phase shifted inbound wireless signals.

21. The video gaming receiver of claim 18, wherein the angular positioning module comprises:

a plurality of phase shifters operably coupled to phase shift the plurality of received inbound wireless signals to produce a plurality of phase shifted inbound wireless signals;

a sequential sum-difference beamforming network operably coupled to sequentially generate a sum signal and a difference signal from the plurality of phase shifted inbound wireless signals, wherein the sum signal is provided as the representation of the inbound wireless signal; and

a control module operably coupled to determine angular position of the inbound wireless signal based on the sum signal and the difference signal.

22. The video gaming receiver of claim 18, wherein the sequential sum-difference beamforming network comprises:

a summing module operably coupled to sum the plurality of phase shifted inbound wireless signals to produce a sum component;

a difference module operably coupled to generate a difference component from the plurality of phase shifted inbound wireless signals;

a least one 1-bit phase shifter operably coupled to invert or not invert the difference component to produce a phase shifted difference component; and

a combining module operably coupled to combine the sum component and the phase shifted difference component to produce the sum signal and the difference signal.

23. The video gaming receiver of claim 18 further comprises the angular positioning module operably coupled to:

adjust the first and second radiation patterns to adjust reception strength of the inbound wireless signal.

24. The video gaming receiver of claim 18 further comprises:

the antenna array is configured in an end-fire manner.