Multi-band antenna for GSM, UMTS, and WiFi applications
First Claim
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1. A multi-band antenna comprising:
- first and second vertically spaced antenna elements connected to a ground plane, wherein the first antenna element is disposed in the same plane as the ground plane; and
a feed antenna element connected to an antenna feed and disposed between the first and second antenna elements, said feed antenna element comprising first and second branches arranged to electro-magnetically couple with the first and second antenna elements to define multiple operating frequency bands of the multi-band antenna.
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Abstract
The multi-band antenna described herein includes multiple antenna elements that collectively resonate in multiple different frequency bands. One exemplary antenna includes first and second vertically spaced antenna elements that connect to a ground plane. A feed antenna element positioned between the first and second antenna elements connects to an antenna feed. The electromagnetic coupling produced by the arrangement of these antenna elements produces multiple resonant frequencies, and therefore, defines multiple operating frequency bands of the multi-band antenna.
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Citations
29 Claims
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1. A multi-band antenna comprising:
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first and second vertically spaced antenna elements connected to a ground plane, wherein the first antenna element is disposed in the same plane as the ground plane; and a feed antenna element connected to an antenna feed and disposed between the first and second antenna elements, said feed antenna element comprising first and second branches arranged to electro-magnetically couple with the first and second antenna elements to define multiple operating frequency bands of the multi-band antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A mobile communication device comprising:
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a multi-band antenna comprising; first and second vertically spaced antenna elements connected to a ground plane, wherein the first antenna element is disposed in the same plane as the ground plane; and a feed antenna element connected to an antenna feed and disposed between the first and second antenna elements, said feed antenna element comprising first and second branches arranged to electro-magnetically couple with the first and second antenna elements; and a transceiver system configured to transmit and receive wireless communication signals via the multi-band antenna. - View Dependent Claims (16, 17, 18)
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19. A method of constructing a multi-band antenna comprising:
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connecting first and second vertically spaced antenna elements to a ground plane, wherein the first antenna element is disposed in the same plane as the ground plane; and disposing a feed antenna element connected to an antenna feed between the first and second antenna elements, said feed antenna element comprising first and second branches arranged to electro-magnetically couple to the first and second antenna elements. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. A multi-band antenna comprising:
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a generally U-shaped first antenna element, wherein a first end of the generally U-shaped first antenna element connects to a ground plane via a ground connector; a generally I-shaped second antenna element connected to the ground plane and vertically spaced from the first antenna element; a conducting strip to electrically connect one end of the generally I-shaped second antenna element to a middle section of the generally U-shaped first antenna element; and a feed antenna element connected to an antenna feed and disposed between the first and second antenna elements, said feed antenna element comprising first and second branches arranged to electro-magnetically couple with the first and second antenna elements to define multiple operating frequency bands of the multi-band antenna. - View Dependent Claims (28)
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29. A method of constructing a multi-band antenna comprising:
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connecting a generally U-shaped first antenna element to a ground plane via a ground connection; connecting a generally I-shaped second antenna element to the ground plane, wherein the second antenna element is vertically spaced from the first antenna element; electrically connecting one end of the generally I-shaped second antenna element to a middle section of the generally U-shaped first antenna element using a conducting strip vertically disposed between the first and second antenna elements; and disposing a feed antenna element connected to an antenna feed between the first and second antenna elements, said feed antenna element comprising first and second branches arranged to electro-magnetically couple to the first and second antenna elements.
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Specification