Mobile wireless communications device with user navigation using an antenna and related methods

1. A mobile wireless communications device comprising:

a wireless transceiver;

a touchless input device comprising

at least one antenna, and

at least one circuit coupled to said at least one antenna and configured to provide a touchless interface; and

a controller coupled to said wireless transceiver and touchless input device, said controller configured to provide touchless device navigation responsive to the touchless interface.

2. The mobile wireless communications device according to claim 1 further comprising a display coupled to said controller; and wherein the touchless device navigation comprises multi-dimensional scrolling on said display.

3. The mobile wireless communications device according to claim 1 wherein said at least one antenna comprises first and second antennas; and wherein said at least one circuit comprises first and second oscillation circuits coupled to respective ones of said first and second antennas.

4. The mobile wireless communications device according to claim 3 wherein said first and second antennas have respective first and second different gain patterns.

5. The mobile wireless communications device according to claim 3 wherein said first and second antennas are oriented in orthogonal directions.

6. The mobile wireless communications device according to claim 3 wherein said first and second oscillation circuits each comprises at least one inductor-capacitor (LC) oscillation circuit.

7. The mobile wireless communications device according to claim 6 wherein said at least one LC oscillation circuit is tuned to a frequency in a range of 100 to 300 kHz.

8. The mobile wireless communications device according to claim 1 wherein said at least one circuit comprises:

an oscillator circuit;

a rectifier coupled to said oscillator circuit; and

an analog-to-digital converter coupled to said rectifier.

9. The mobile wireless communications device according to claim 1 wherein said controller is configured to determine a relative user hand position value responsive to the touchless interface, and use the relative user hand position value for the device navigation.

10. A mobile wireless communications device comprising:

a wireless transceiver;

a touchless input device comprising

first and second antennas having different gain patterns, said first and second antennas being oriented in orthogonal directions, and

first and second oscillation circuits coupled to respective ones of said first and second antennas and configured to provide a touchless interface; and

a controller coupled to said wireless transceiver and touchless input device, said controller configured to provide touchless device navigation responsive to said touchless interface.

11. The mobile wireless communications device according to claim 10 further comprising a display coupled to said controller; and wherein the touchless device navigation comprises multi-dimensional scrolling on said display.

12. The mobile wireless communications device according to claim 10 wherein said first and second antennas have respective different gain patterns oriented in orthogonal directions.

13. The mobile wireless communications device according to claim 10 wherein said first and second oscillation circuits each comprises at least one inductor-capacitor (LC) oscillation circuit.

14. The mobile wireless communications device according to claim 13 wherein said at least one LC oscillation circuit is tuned to a frequency in a range of 100 to 300 kHz.

15. The mobile wireless communications device according to claim 10 wherein said touchless input device further comprises:

a respective rectifier coupled to each of said first and second oscillator circuits; and

a respective analog-to-digital converter coupled to each of said rectifiers.

16. The mobile wireless communications device according to claim 10 wherein said controller is configured to determine a relative user hand position value responsive to the touchless interface, and use the relative user hand position value for the device navigation.

17. A method for operating a mobile wireless communications device comprising a wireless transceiver, a touchless input device comprising at least one antenna and at least one circuit coupled thereto and configured to provide a touchless interface, and a controller coupled to the wireless transceiver and touchless input device, the method comprising:

using the controller to provide touchless device navigation responsive to the touchless interface.

18. The method according to claim 17 wherein the touchless device navigation comprises multi-dimensional scrolling on a display coupled to the controller.

19. The method according to claim 17 wherein the at least one antenna comprises first and second antennas; and wherein the at least one circuit comprises first and second oscillation circuits coupled to respective ones of the first and second antennas.

20. The method according to claim 17 wherein the first and second antennas have respective first and second different gain patterns.

21. The method according to claim 17 wherein the first and second antennas are oriented in orthogonal directions.

22. The method according to claim 17 wherein using the controller comprises using the controller to determine a relative user hand position value based upon an output of the at least one circuit.