Portable antenna

• US 6,781,549 B1
• Filed: 07/15/2002
• Issued: 08/24/2004
• Est. Priority Date: 10/12/1999
• Status: Expired due to Fees

• Current Assignee: Galtronics Limited
• Original Assignee: Galtronics Limited
• Inventors: Berin, Alexander, Macqueen, Angus
• Primary Examiner(s): Chen, Shih-Chao
• Application Number:
  US10/110,438
• Time in Patent Office: 771 Days
• Field of Search: 343/702, 343/867, 343/893, 343/895
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• CPC Class Codes: H01Q 1/362 for broadside radiating helical antennas
• CPC Class Codes: H01Q 11/08 Helical antennas
• CPC Class Codes: H01Q 5/357 using a single feed point
• 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 particularly suitable for a portable communication device and including an elongate portion integrally formed with at least one first coil portion arranged about the elongate portion and in at least partially overlapping relationship therewith. A portable communication device employing the antenna is also described.

Claims

1. An antenna particularly suitable for a portable communication device and including:

a elongate portion integrally formed with at least one first coil portion arranged about the elongate portion and in at least partially overlapping relationship therewith,

said antenna having a single feed end and a single free end.

2. The antenna according to claim 1 and also comprising at least one second coil portion integrally formed with said elongate portion.

3. The antenna according to claim 2 and wherein said at least one second coil portion is disposed in non-overlapping relationship with said elongate portion.

4. The antenna according to claim 1 and wherein said elongate portion and said at least one first coil portion have separate resonant frequency bands.

5. The antenna according to claim 2 and wherein said elongate portion, said at least one first coil portion and said at least one second coil portion each have separate resonant frequency bands.

6. The antenna according to claim 1 and also comprising a mounting portion integrally formed with said elongate portion, said mounting portion including a bent section arranged for spring fit engagement with an electrical contact.

13. The antenna according to claim 1 and wherein said at least one first coil is formed as one piece with said elongate portion.

14. The antenna according to claim 13 and wherein said at least one first coil portion extends in a wind-back configuration over at least part of said elongate portion.

15. The antenna according to claim 14 and wherein said at least one first coil portion is coaxial with said elongate portion.

16. The antenna according to claim 14 and also comprising at least one second coil portion arranged coaxially with said elongate portion and between said elongate portion and a mounting portion of said antenna.

7. A portable communications device comprising:

a transceiver; and

an antenna connected to said transceiver and including an elongate portion integrally formed with a least one first coil portion arranged about the elongate portion and in at least partially overlapping relationship therewith, said antenna having a single feed and a single free end.

8. The portable communications device according to claim 7 and also comprising at least one second coil portion integrally formed with said elongate portion.

9. The portable communications device according to claim 8 and wherein said at least one second coil portion is disposed in non-overlapping relationship with said elongate portion.

10. The portable communications device according to claim 8 and wherein said elongate portion and said at least one first coil portion have separate resonate frequency bands.

11. The portable communications device according to claim 8 and wherein said elongate portion, said at least one first coil portion and said at least one second coil portion have separate resonate frequency bands.

12. The portable communications device according to claim 8 and also comprising a mounting portion integrally formed with said elongate portion, said mounting portion including a bent section arranged for spring fit engagement with an electrical contact.

17. A portable communication device comprising:

a transceiver; and

an antenna cooperating with said transceiver, said antenna having a single feed end and a single free end and also comprising;

an elongate portion integrally formed with at least one first coil portion arranged about the elongate portion and in at least partially overlapping relationship therewith, wherein said at least one first coil portion is formed as one piece with said elongate portion.

18. The portable communication device according to claim 17 and wherein said at least one first coil portion extends in a wind-back configuration over at least part of said elongate portion.

19. The portable communication device according to claim 18 and wherein said at least one first coil portion is coaxial with said elongate portion.

20. The portable communication device according to claim 18 and also comprising at least one second coil portion arranged coaxially with said elongate portion and between said elongate portion and a mounting portion of said antenna.