METHOD AND SYSTEM FOR A RECONFIGURABLE OVER-INDEXED ANTENNA ARRAY

• US 20170005707A1
• Filed: 10/30/2015
• Published: 01/05/2017
• Est. Priority Date: 06/30/2015
• Status: Active Grant

• Current Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Original Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Inventors: Islam, MD Rashidul, Krenz, Eric L.
• Granted Patent: US 9,641,229 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 21/061 Two dimensional planar arrays
• CPC Class Codes: H01Q 3/24 varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
• CPC Class Codes: H04B 7/0404 the mobile station comprising multiple antennas, e.g. to provide uplink diversity
• CPC Class Codes: H04B 7/0608 Antenna selection according to transmission parameters

Abstract

A method and system for reconfiguring over-indexed antenna arrays in mobile devices are provided. For example, the method includes receiving sensor input that indicates an object blocking a first subset of reconfigurable antenna elements but not blocking a second subset of reconfigurable antenna elements of an over-indexed antenna array. The method also includes configuring, based on the sensor input, a number of the antenna elements in the first subset as non-active for radiating energy and a number of the antenna elements in the second subset as active for radiating energy.

Claims

1. A method for configuring an over-indexed antenna array, the method comprising:

receiving sensor input that indicates an object blocking a first subset of reconfigurable antenna elements but not blocking a second subset of reconfigurable antenna elements of an over-indexed antenna array;

configuring, based on the sensor input, a number of the antenna elements in the first subset as non-active for radiating energy;

configuring, based on the sensor input, a number of the antenna elements in the second subset as active for radiating energy.

2. The method of claim 1, wherein the sensor input indicates a mobile device user'"'"'s hand blocking the first subset of reconfigurable antenna elements.

3. The method of claim 1, wherein a first number of the antenna elements in the first subset are configured as passive elements.

4. The method of claim 1, wherein a second number of the antenna elements in the first subset are configured as sensor elements.

5. The method of claim 1, wherein a first number of the antenna elements in the second subset are configured as active for radiating energy, and a second number of the antenna elements in the second subset are configured as non-active for radiating energy.

6. The method of claim 5, wherein a first portion of the second number of the antenna elements in the second subset are configured as passive elements.

7. The method of claim 6, wherein a second portion of the second number of the antenna elements in the second subset are configured as sensor elements.

8. The method of claim 6 further comprising determining, based on at least one of a target antenna gain or a target scanning angle, one or both of:

location, in the antenna array, of the first number of the antenna elements in the second subset configured as active for radiating energy;

location, in the antenna array, of the first portion of the second number of the antenna elements in the second subset configured as passive elements.

9. The method of claim 1, wherein a first number of the antenna elements in the second subset are configured as active for radiating energy for multiple-input and multiple-output communication.

10. The method of claim 1, wherein a first number of the antenna elements in the second subset are configured as active for radiating energy to satisfy gain requirements for fifth generation wireless communications.

11. A system containing a reconfigurable over-indexed antenna array, the system comprising:

an over-indexed antenna array having a plurality of antenna elements reconfigurable for multiple uses;

a set of sensors configured to provide sensor input that indicates an object blocking a first subset of the plurality of antenna elements but not blocking a second subset of the plurality of antenna elements;

a controller coupled to the set of sensors and the over-indexed antenna array, wherein the controller is configured to;

receive the sensor input;

configure, based on the sensor input, a number of the antenna elements in the first subset as non-active for radiating energy;

configure, based on the sensor input, a number of the antenna elements in the second subset as active for radiating energy.

12. The system of claim 11, wherein each antenna element is reconfigurable as active for radiating energy or as a passive element that is non-active for radiating energy.

13. The system of claim 12, wherein each antenna element is further reconfigurable as a sensor element that is non-active for radiating energy.

14. The system of claim 13 further comprising an array of switches coupling the controller to the antenna array, wherein each switch in the array of switches has a first switch position to configure an antenna element as active for radiating energy, a second switch position to configure the antenna element as the sensor element, and a third switch position to configure the antenna element as the passive element.

15. The system of claim 11 further comprising a transceiver component having a plurality of transceiver paths, wherein the antenna array includes enough antenna elements to form multiple groups of antenna elements with each group of antenna elements being coupled to a different transceiver path of the plurality of transceiver paths to implement multi-input and multiple-output communications.

16. The system of claim 11 further comprising a housing, wherein the antenna array is coupled within an interior of the housing.

17. The system of claim 11 further comprising a housing, wherein the antenna array is coupled to an exterior of the housing in an area suitable for mounting antenna elements.

18. The system of claim 17, wherein the plurality of antenna elements are substantially equally spaced, have a substantially similar height and shape, and substantially fill the entire area suitable for mounting antenna elements.

19. The system of claim 11 further comprising a transceiver component, wherein the antenna array is capacitively coupled to the transceiver component.

20. The system of claim 11 further comprising a transceiver component, wherein the antenna array is connected by a direct feed from the transceiver component.