Loop antenna
AssigneeAskey Computer Corp.
InventorsChien-Sheng Liu, Wei-Lu Hung, Sheng-Hsin Chang
Life of this patent
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Abstract
A loop antenna adapted for a communication device is provided. The loop antenna includes a feed, a ground, a circular loop, at least one first tuning element, and at least one second tuning element. The circular loop is connected to the feed and the ground. The first tuning element is extended from the circular loop and corresponds to a first frequency band. The second tuning element is extended from the circular loop and corresponds to a second frequency band. Bandwidths of the first frequency band and the second frequency band of the loop antenna are changed by adjusting the first tuning element and the second tuning element, respectively.
Claims6
A loop antenna adapted for a communication device, the loop antenna comprising:
- a feed;
- a ground;
- a circular loop connected to the feed and the ground;
- at least one first tuning element extended from the circular loop, the at least one first tuning element corresponding to a first frequency band;
- and
- at least one second tuning element extended from the circular loop, the at least one second tuning element corresponding to a second frequency band, wherein the at least one first tuning element and the at least one second tuning element respectively comprise an electrical conductor, the electrical conductor is a capacitor, an inductor, or copper foil, wherein
- bandwidths of the first frequency band and the second frequency band of the loop antenna are changed by adjusting lengths, widths, values of charges of the capacitors or inductors of the at least one first tuning element and the at least one second tuning element, respectively, and the at least one first tuning element and the at least one second tuning element are located in the circular loop.
Dependencies are inferred from the claim text.