Antenna set for mobile devices

• US 20050093752A1
• Filed: 10/25/2004
• Published: 05/05/2005
• Est. Priority Date: 10/31/2003
• Status: Active Grant

• Current Assignee: Wistron NeWeb Corporation (Wistron Corporation)
• Original Assignee: Wistron NeWeb Corporation (Wistron Corporation)
• Inventors: Chang, He-Jun, Cheng, Ping-Xi
• Granted Patent: US 7,161,543 B2
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: G06F 1/1616 with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
• CPC Class Codes: G06F 1/1698 the I/O peripheral being a sending/receiving arrangement to establish a cordless communication link, e.g. radio or infrared link, integrated cellular phone details of antennas disposed inside a computer H01Q1/2266
• CPC Class Codes: H01Q 1/2266 disposed inside the computer
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence
• CPC Class Codes: H01Q 21/24 Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001
• CPC Class Codes: H01Q 5/357 using a single feed point
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

An antenna for the mobile electronic device. The antenna includes a first L-shaped element connecting to a second L-shaped element. Both elements are used for sending and receiving signals in a frequency band. Besides, an antenna set includes a first antenna unit and a second antenna unit, which are configured to optimize the superposition of both radiations as isotropic.

Claims

1. An antenna, comprising:

a base;

a first L-shaped element comprising a first arm and a second arm, said second arm of said first L-shaped element having a first length;

a second L-shaped element for sending and/or receiving signals in a first frequency band, said second L-shaped element having a first arm and a second arm; and

a signal feed;

wherein said first arm of said first L-shaped element connects substantially perpendicularly to said base at a first connection point, wherein said second arm of said first L-shaped element is substantially parallel to an edge of said base, and wherein said first arm of said second L-shaped element connects to said second arm of said first L-shaped element at a second connection point, and

wherein said signal feed is located at said second arm of said first L-shaped element, and said signal feed and said second connection point are separated by a first predetermined distance.

2. The antenna of claim 1, further comprising a ground point located at said edge of said base;

wherein said first L-shaped element, said edge of said base, said ground point, and said signal feed form a slot structure for sending and/or receiving signals in said first frequency band.

3. The antenna of claim 2, further comprising:

a third L-shaped element for sending and/or receiving signals in a second frequency band, said third L-shaped element having a first arm and a second arm;

wherein said first arm of said third L-shaped element connects to said second arm of said first L-shaped element at a third connection point, and said third connection point and said second connection point are separated by a second predetermined distance.

4. The antenna of claim 3, wherein said first length is substantially one-half of a wavelength corresponding to said first frequency, wherein a length of said second arm of said second L-shaped element is substantially one-quarter of a wavelength corresponding to said first frequency, and wherein a length of said second arm of said third L-shaped element is substantially one-half of a wavelength corresponding to said second frequency.

5. An antenna, comprising:

a base having an edge;

a first L-shaped element comprising a first arm and a second arm, said second arm of said first L-shaped element having a first length;

a second L-shaped element for sending and/or receiving signals in a first frequency band, said second L-shaped element having a first arm and a second arm; and

a signal feed;

a ground point located at said edge of said base, said ground point and said first connection point are substantially distanced from each other by said first length;

wherein said first arm of said first L-shaped element is substantially perpendicular to and is connected to said edge of said base at a first connection point, said second arm of said first L-shaped element is substantially parallel to said edge of said base, said first arm of said second L-shaped element connects to said second arm of said first L-shaped element at a second connection point, and

wherein said first L-shaped element, said edge of said base, said ground point, and said signal feed form a slot structure for sending and/or receiving signals in said first frequency band.

6. The antenna of claim 5, further comprising:

a third L-shaped element for sending and/or receiving signals in a second frequency band;

said third L-shaped element having a first arm and a second arm;

wherein said first arm of said third L-shaped element connects to said second arm of said first L-shaped element at a second connection point, and said second connection point and said signal feed are distanced from each other by a second predetermined distance.

7. The antenna of claim 6, wherein said first length is substantially one-half of a wavelength corresponding to said first frequency, wherein a length of said second arm of said second L-shaped element is substantially one-quarter of a wavelength corresponding to said first frequency, and wherein a length of said second arm of said third L-shaped element is substantially one-half of a wavelength corresponding to said second frequency.

8. An antenna set incorporated in a device, comprising:

a first antenna unit comprising a first ground point, said first antenna unit having a first radiation pattern;

a second antenna unit comprising a second ground point, said second antenna unit having a second radiation pattern; and

a base connecting to said first antenna unit and said second antenna unit;

wherein said first antenna unit is substantially perpendicular to said second antenna unit; and

wherein said base connects to said first ground point and said second ground point for providing a common ground for said first antenna and said second antenna.

9. The antenna set of claim 8, wherein said first antenna unit is substantially identical to said second antenna unit in geometry structure.

10. The antenna set of claim 8, wherein both said first antenna unit and said second antenna unit are dual-band antennas.

11. The antenna set of claim 8, wherein said first antenna unit comprises:

a base;

a first L-shaped element comprising a first arm and a second arm, said second arm of said first L-shaped element having a first length;

a second L-shaped element for sending and/or receiving signals in a first frequency band, said second L-shaped element having a first arm and a second arm; and

a signal feed;

wherein said first arm of said first L-shaped element connects substantially perpendicularly to said base at a first connection point, wherein said second arm of said first L-shaped element is substantially parallel to an edge of said base, and wherein said first arm of said second L-shaped element connects to said second arm of said first L-shaped element at a second connection point; and

wherein said signal feed is located at said second arm of said first L-shaped element, and said signal feed and said second connection point are separated by a first predetermined distance.

12. The antenna set of claim 8, wherein said first antenna unit comprises:

a base having an edge;

a first L-shaped element comprising a first arm and a second arm, said second arm of said first L-shaped element having a first length;

a second L-shaped element for sending and/or receiving signals in a first frequency band, said second L-shaped element having a first arm and a second arm; and

a signal feed;

a ground point located at said edge of said base, said ground point and said first connection point are substantially distanced from each other by said first length;

wherein said first arm of said first L-shaped element is substantially perpendicular to and is connected to said edge of said base at a first connection point, said second arm of said first L-shaped element is substantially parallel to said edge of said base, said first arm of said second L-shaped element connects to said second arm of said first L-shaped element at a second connection point; and

wherein said first L-shaped element, said edge of said base, said ground point, and said signal feed form a slot structure for sending and/or receiving signals in said first frequency band.

13. The antenna set of claim 8, wherein said first antenna unit, said second antenna unit, and said base are integrally formed.

14. The antenna set of claim 8, wherein said device is selected from the group consisting of a Tablet PC, a laptop PC, a PDA, and a mobile phone.

15. An antenna set, comprising:

a base unit having a first base element and a second base element;

a first antenna unit having a first conducting element, a first radiating element, and a second radiating element, said first conducting element comprising a first supporting arm and a first signal arm, said first radiating element comprising a first emitting arm and a first connection arm, said second radiating element comprising a second emitting arm and a second connection arm, wherein said first connection arm of said first radiating element and said second connection arm of said second radiating element connect to said first signal arm of said first conducting element; and

a second antenna unit having a second conducting element, a third radiating element, and a fourth radiating element, said second conducting element comprising a second supporting arm and a second signal arm, said third radiating element comprising a third emitting arm and a third connection arm, said fourth radiating element comprising a fourth emitting arm and a fourth connection arm, wherein said third connection arm of said third radiating element and said fourth connection arm of said fourth radiating element connect to said second signal arm of said second conducting element;

wherein said first supporting arm of said first antenna unit connects to said first base element of said base unit, wherein said second supporting arm of said second antenna unit connects to said second base element of said base unit, and wherein said first base element is substantially perpendicular to said second base element.

16. The antenna set of claim 15, wherein said first signal arm is substantially parallel to said first base element, and said second signal arm is substantially parallel to said second base element.

17. The antenna set of claim 16, wherein said first antenna unit is substantially identical to said second antenna unit.

18. An electronic device comprising:

a housing having a first end and a second end;

a first antenna set having a first antenna unit and a second antenna unit, said first antenna unit being substantially perpendicular to said second antenna unit; and

a second antenna set having a third antenna unit and a fourth antenna unit, said third antenna unit being substantially perpendicular to said fourth antenna unit,

wherein said first antenna set is disposed at said first end of said housing and said second antenna set is disposed at said second end of said housing, wherein said first antenna unit is substantially parallel to said fourth antenna unit and said second antenna unit is substantially parallel to said third antenna unit.

19. The electronic device of claim 18, wherein said first antenna unit is substantially identical to said third antenna unit and said second antenna unit is substantially identical to said fourth antenna unit.

20. The electronic device of claim 19, wherein said first antenna unit and said third antenna unit receive and transmit signals within a first frequency band, while said second antenna unit and said fourth antenna unit receive and transmit signals within a third frequency band.

21. The electronic device of claim 20, wherein said first antenna unit and said third antenna unit further receive and transmit signals within a second frequency band, while said second antenna unit and said fourth antenna unit receive and transmit signals within a fourth frequency band.