| US 7,489,276 B2 | ||
| Mobile wireless communications device comprising multi-frequency band antenna and related methods | ||
| Yihong Qi, Waterloo (Canada); Ying Tong Man, Kitchener (Canada); Adrian Cooke, Kitchener (Canada); and Perry Jarmuszewski, Waterloo (Canada) | ||
| Assigned to Research In Motion Limited, Waterloo, Ontario (Canada) | ||
| Filed on Jun. 27, 2005, as Appl. No. 11/167,506. | ||
| Prior Publication US 2006/0293078 A1, Dec. 28, 2006 | ||
| Int. Cl. H01Q 1/24 (2006.01) | ||
| U.S. Cl. 343—702 [343/828] | 22 Claims |
| 1. A mobile wireless communications device comprising:
a housing; and
a multi-frequency band antenna carried within said housing and comprising
a main loop conductor having a gap therein defining first and second ends of said main loop conductor,
a first branch conductor having a first end connected adjacent the first end of said main loop conductor and having a second
end defining a first feed point,
a second branch conductor having a first end connected adjacent the second end of said main loop conductor and a second end
defining a second feed point,
a third branch conductor having a first portion within said main loop conductor, and a second portion connected to the second
feed point, and
a tuning branch conductor having a first end connected to said main loop conductor between the respective first ends of said
first and second branches.
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