Apparatus and Method for Providing Antenna Beamforming

• US 20100167664A1
• Filed: 02/19/2009
• Published: 07/01/2010
• Est. Priority Date: 12/31/2008
• Status: Abandoned Application

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Szini, Istvan
• Application Number:
  US12/389,165
• Publication Number:
  US 20100167664A1
• Time in Patent Office: Days
• US Class Current: 455/73
• CPC Class Codes: H04B 17/27 for locating or positioning the transmitter
• CPC Class Codes: H04B 7/0617 for beam forming

Abstract

The present invention provides a device and a method in a device having a plurality of antennas for providing beamforming. The method includes reading one or more sensors, which are adapted to detect at least one of user interaction with the device or device proximity to other objects, and present device geometry. A phase adjustment is then computed in a controller for forming a radiated beam, based upon the readings of the one or more sensors, that enhances the received energy at an intended destination. The computed phase adjustment is then applied to one or more phase adjustment circuits, respectively coupled to at least some of the plurality of antennas. A signal is then transmitted by a transmitter to the intended destination via at least some of the plurality of antennas.

Claims

1. A method in a device having a plurality of antennas for providing beamforming, the method comprising:

reading one or more sensors, which are adapted to detect at least one of user interaction with the device or device proximity to other objects, and present device geometry;

computing a phase adjustment in a controller for forming a radiated beam, based upon the readings of the one or more sensors, that enhances the received energy at an intended destination;

applying the computed phase adjustment to one or more phase adjustment circuits, respectively coupled to at least some of the plurality of antennas;

transmitting by a transmitter via at least some of the plurality of antennas, a signal to the intended destination.

2. A method in accordance with claim 1 further comprising:

receiving a signal from the intended destination, and computing the direction of arrival of the signal, wherein the direction of arrival is used by the controller in computing a phase adjustment.

3. A method in accordance with claim 2 wherein the direction of arrival is determined by detecting a time of arrival difference of a signal received at each of a plurality of the antennas.

4. A method in accordance with claim 2 wherein the direction of arrival is determined by iteratively applying one or more phase adjustments, and observing the change in the received signal strength.

5. A method in accordance with claim 1 further comprising observing the current use characteristics of the device by the controller, wherein the observed use characteristics are used by the controller in computing a phase adjustment.

6. A method in accordance with claim 5 wherein observing the current use characteristics includes observing the present mode of operation.

7. A method in accordance with claim 1 wherein the controller uses at least some of the values upon which the phase adjustment is based to access a look up table stored in memory of the device, in determining at least partially the phase adjustment.

8. A method in accordance with claim 1 wherein the sensors used to determine user interaction with the device or device proximity to other objects include proximity sensors positioned at different points around the exterior surface of the device.

9. A method in accordance with claim 1 wherein the device includes a housing having multiple housing elements that move relative to one another, and wherein the sensors that detect the present device geometry includes sensors that detect the relative movement/position of the multiple housing elements relative to one another.

19. A wireless communication device in accordance with claim 1 wherein the controller includes a mode module adapted for detecting the current operating mode of the device.

10. A wireless communication device comprising:

a transmitter for producing a signal to be transmitted;

a plurality of antennas coupled to the transmitter for receiving the signal to be transmitted and converting the signal into radiated energy;

one or more sensors adapted for detecting at least one of user interaction with the device or device proximity to other objects, and present device geometry;

a controller coupled to the plurality of sensors for receiving the detected output of the sensors; and

one or more phase shift circuits coupled between at least one of the antennas and the transmitter, for adjusting the phase of the signal received by the corresponding antenna; and

wherein the controller includes a phase adjustment module adapted to produce a control signal based upon the received output of the sensors, which controls the amount of phase shift applied by the one or more phase shift circuits.

11. A wireless communication device in accordance with claim 10 wherein the one or more sensors include one or more proximity detectors.

12. A wireless communication device in accordance with claim 10 wherein the one or more sensors include one or more touch detectors.

13. A wireless communication device in accordance with claim 10 wherein the one or more sensors include one or more tilt detectors.

14. A wireless communication device in accordance with claim 10 wherein the one or more sensors include one or more surface current detectors.

15. A wireless communication device in accordance with claim 10 wherein the wireless communication device further comprises a housing having multiple housing elements that move relative to one another, and wherein the one or more sensors include sensors that detect the relative movement/position of the multiple housing elements relative to one another.

16. A wireless communication device in accordance with claim 10 further comprising a storage device coupled to the controller.

17. A wireless communication device in accordance with claim 16 wherein the storage device includes one or more sets of prestored instructions for use in implementing the one or more modules of the controller.

18. A wireless communication device in accordance with claim 16 wherein the storage device includes one or more look up tables for use in producing the control signal used to control the amount of the phase shift applied by the one or more phase shift circuits, based upon one or more of the values detected by the sensors.

20. A wireless communication device in accordance with claim 10 further comprising a receiver adapted for detecting a radiated signal originating from outside of the device and for producing a received signal, wherein detected characteristics of the received signal can be used to identify the direction of an intended destination of signals to be transmitted by the wireless communication device.