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 Title: |
US6603440:
Arrayed-segment loop antenna
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Howard, David Amundson; Newark, CA
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| Assignee: |
Protura Wireless, Inc., Half Moon Bay, CA
other patents from PROTURA WIRELESS, INC. (822583) (approx. 1)
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| Published / Filed: |
2003-08-05
/ 2000-12-14
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| Application Number: |
US2000000738906
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| IPC Code: |
Advanced:
H01Q 1/24;
H01Q 1/36;
H01Q 1/38;
H01Q 7/00;
Core:
more...
IPC-7:
H01Q 1/24;
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| ECLA Code: |
H01Q1/24A1C; H01Q1/24A1A; H01Q1/36; H01Q1/38; H01Q7/00;
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| U.S. Class: |
343/866;
343/702;
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| Field of Search: |
343/866,732,731,741,895,702,792.5,787,806,846
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| Priority Number: |
| 2000-12-14 |
US2000000738906 |
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| Abstract: |
A segmented loop antenna formed of many segments connected in an electrical loop where the segments are arrayed in multiple divergent directions that tend to increase the antenna electrical length while permitting the overall outside antenna dimensions to fit within the antenna areas of communication devices. The loop antenna operates in a communication device to exchange energy at a radiation frequency and includes a connection having first and second conductors for conduction of electrical current in a radiation loop. The radiation loop includes a plurality of electrically conducting segments each having a segment length. The segments are connected in series electrically connected between said first and second conductors for exchange of energy at the radiation frequency. The loop has an electrical length, Al that is proportional to the sum of segment lengths for each of said radiation segments and the segments are arrayed in a pattern so that different segments connect at vertices and conduct electrical current in different directions near the vertices.
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| Attorney, Agent or Firm: |
Lovejoy, David E. ;
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| Primary / Asst. Examiners: |
Clinger, James;
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
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| Designated Country: |
AE AG AL AM AP AT AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EA EC EE EP ES FI GB GD GE GH GM HR HU ID IL
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| Family: |
Show 5 known family members
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First Claim:
Show all 21 claims |
What is claimed is:
1. A loop antenna, for use with a communication device, operating for exchanging energy at a radiation frequency, comprising,
- connection means having first and second conductors for conduction of electrical current,
- a radiation loop including a plurality of electrically conducting segments each having a segment length where,
- said segments are electrically connected in series between said first and second conductors for exchange of energy at the radiation frequency, said loop having an electrical length, Al that is proportional to the sum of segment lengths for each of said radiation segments,
- said segments are arrayed in three or more multiple divergent directions that form an irregular pattern and that tend to increase the loop antenna electrical length while permitting the overall outside dimensions of the antenna to fit within an antenna area of said communication device,
- said segments are arrayed in a pattern to form a loop where different segments connect at vertices and conduct electrical current in different directions near said vertices.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 5 U.S. patent(s) that reference this one
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| Foreign References: |
None
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| Other Abstract Info: |
DERABS C2002-480369
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| Other References: |
Gianvittorio, John P., et al., "Fractal Element Antennas: A Compliation of Configurations with Novel Characteristics", IEEE Antennas and Propogation Society Int'l Symposium, pp. 1688-1691, vol. 3, XP002203599 2000, Piscataway, NJ, IEEE USA.
G. Nicolaidis, E. Agboraw, O. Leisten, Y. Vardaxoglou, A Miniature Dielectric-loaded Antenna with Low SAR, ICT 98 (International Conference for Telecommunication), Porto Carras, Greece Jun. 21-25, 1998, vol. 3 pp. 376-379.
O. Leisten, B. Rosenberger, Miniature Dielectric-loaded Personal Telephone Antennas with low SAR, 10th International Conference on Wireless Communications, Jul. 6-8, 1998, Calgary, Canada, vol. 1, pp. 196-205.
O. Leisten, Y. Vardaxoglou, T. Schmid, B. Rosenberger, E. Agboraw, N. Kuster, G. Nicolaidis, Miniature Dielectric-loaded Personal Telephone Antennas with Low User Exposure, Electronics Letters, Aug. 20, 1998, vol. 34, No. 17, pp. 1628-1629.
(2 pages)
Cited by 4 patents
[ISI abstract]
J.D. Kraus, Electromagnetics, 4th Edition, Mc-Graw-Hill, New York, 1991, Chapter 15 Antennas and Radiation, pp. 716-767.
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