Antenna, rotating unit, wireless communication device and rotating controlling method

1. A rotating unit for controlling an antenna to rotate, the rotating unit comprising:

an electromagnetic element; and

a rotating circuit electrically coupled with the electromagnetic element;

wherein the rotating circuit controls the electromagnetic element to generate a magnetic force for controlling a rotation of the antenna;

wherein the antenna comprises a housing, an antenna end, a rotating end, and a rotating shaft, the antenna end is positioned at a first end of the housing, the rotating end is positioned at a second end of the housing opposite to the first end, the rotating shaft is positioned between the antenna end and the rotating end, the electromagnetic element generates a magnetic force for controlling the rotating end to rotate around the rotating shaft.

2. The rotating unit of claim 1 , wherein the rotating circuit comprises a central processing unit (CPU), a D/A converter, and a voltage/current converter, the CPU is configured to detect a signal receiving/sending strength of the antenna and provide different voltages to the D/A converter according to the detected signal receiving/sending strength; the D/A converter is configured to convert the voltage provided by the CPU from an analog signal to a digital signal, and the voltage/current converter is configured to convert the voltage from the D/A converter to a current and outputs the current to the electromagnetic element, so as to control the magnetic force and a polarity direction of the electromagnetic element.

3. The rotating unit of claim 2 , wherein the rotating circuit further comprises an inverter and a switch, one end of the D/A converter is directly and electrically connected to the switch, the other end of the D/A converter is electrically connected to the switch through the inverter; the inverter is configured to inverter the voltage from the D/A converter, the CPU controls the switch to select one of the D/A converter and the inverter to be electrically connected to the voltage/current converter.

4. The rotating unit of claim 2 , wherein the rotating circuit further comprises a inverter and a switch, the inverter is positioned between the D/A converter and the voltage/current converter, the inverter is configured to inverter the voltage from the D/A converter, the CPU controls the switch to select one of the D/A converter and the inverter to be electrically connected to the voltage/current converter, the voltage/current converter is configured to convert the voltage from the D/A converter or the inverter to a current with two different directions, the switch is positioned between the voltage/current converter and the electromagnetic element, and the CPU controls the switch to select one of the currents to output to the electromagnetic element.

5. A wireless communication device comprising:

an antenna; and

a rotating unit comprising:

an electromagnetic element; and

a rotating circuit electrically connected to the electromagnetic element;

wherein the rotating circuit controls the electromagnetic element to generate a magnetic force for controlling a rotation of an antenna;

wherein the antenna comprising a housing, an antenna end, a rotating end, and a rotating shaft, the antenna end is positioned at a first end of an interior of the housing, the rotating end is positioned at a second end of the interior of the housing opposite to the first en& the rotating shaft is positioned between the antenna end and the rotating end, the electromagnetic element generates a magnetic force for controlling the rotating end to rotate around the rotating shaft.

6. The wireless communication device of claim 5 , wherein the rotating shaft is positioned close to the rotating end.

7. The wireless communication device of claim 5 , wherein the rotating circuit comprises a central processing unit (CPU), a D/A converter, and a voltage/current converter, the CPU is configured to detect a signal receiving/sending strength of the antenna and provide different voltages to the D/A converter according to the detected signal receiving/sending strength; the D/A converter is configured to convert the voltage provided by the CPU from an analog signal to a digital signal, and the voltage/current converter is configured to convert the voltage from the D/A converter to a current and outputs the current to the electromagnetic element, so as to control the magnetic force and a polarity direction of the electromagnetic element.

8. The wireless communication device of claim 7 , wherein the rotating circuit further comprises a inverter and a switch, one end of the D/A converter is directly and electrically connected to the switch, the other end of the D/A converter is electrically connected to the switch through the inverter; the inverter is configured to inverter the voltage from the D/A converter, the CPU controls the switch to select one of the D/A converter and the inverter to be electrically connected to the voltage/current converter.

9. The wireless communication device of claim 7 , wherein the rotating circuit further comprises a inverter and a switch, the inverter is positioned between the D/A converter and the voltage/current converter, the inverter is configured to inverter the voltage from the D/A converter, the CPU controls the switch to select one of the D/A converter and the inverter to be electrically connected to the voltage/current converter, the voltage/current converter is configured to convert the voltage from the D/A converter or the inverter to a current with two different directions, the switch is positioned between the voltage/current converter and the electromagnetic element, and the CPU controls the switch to select one of the currents to output to the electromagnetic element.