Non-protruding dual-band antenna for communications device
First Claim
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1. A radiotelephone apparatus, comprising:
- a housing comprising top and bottom portions, said housing configured to enclose electronic components that transmit and receive radiotelephone communications signals;
a circuit board disposed within said housing, said circuit board comprising a plurality of contact pads on a face thereof;
a keypad comprising a plurality of keys, each key having a first end extending through said housing top portion and a second end operably engageable with a respective contact pad on said circuit board face;
an antenna between said keypad and said housing top portion, said antenna comprising;
a first dielectric substrate comprising a surface that faces away from said circuit board;
a first radiating element disposed on said first dielectric substrate surface, said first radiating element comprising a first electrically conductive path;
a second dielectric substrate comprising a surface that faces away from said circuit board; and
a second radiating element disposed on said second dielectric substrate surface and parasitically coupled with said first radiating element, said second radiating element comprising a second electrically conductive path.
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Abstract
Dual-band antennas include first and second radiating elements configured to be enclosed within a radiotelephone between a keypad and a top housing and to occupy available space existing around the perimeter of the keypad and/or between the keys of a keypad. First and second coplanar radiating elements are maintained in adjacent spaced-apart relationship with a circuit board underlying the keypad. The underlying circuit board serves as a ground plane for directing radiation from the antenna outwardly in a direction normal to the circuit board.
36 Citations
23 Claims
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1. A radiotelephone apparatus, comprising:
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a housing comprising top and bottom portions, said housing configured to enclose electronic components that transmit and receive radiotelephone communications signals; a circuit board disposed within said housing, said circuit board comprising a plurality of contact pads on a face thereof; a keypad comprising a plurality of keys, each key having a first end extending through said housing top portion and a second end operably engageable with a respective contact pad on said circuit board face; an antenna between said keypad and said housing top portion, said antenna comprising; a first dielectric substrate comprising a surface that faces away from said circuit board; a first radiating element disposed on said first dielectric substrate surface, said first radiating element comprising a first electrically conductive path; a second dielectric substrate comprising a surface that faces away from said circuit board; and a second radiating element disposed on said second dielectric substrate surface and parasitically coupled with said first radiating element, said second radiating element comprising a second electrically conductive path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An antenna, comprising:
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a ground plane; a meandering first dielectric substrate in adjacent spaced-apart relationship with said ground plane, said first dielectric substrate comprising a surface that faces away from said ground plane; a first radiating element disposed on said dielectric substrate surface, said first radiating element comprising a first electrically conductive path; a second dielectric substrate in adjacent spaced-apart relationship with said ground plane, said second dielectric substrate comprising a surface that faces away from said ground plane; and a second radiating element disposed on said second dielectric substrate surface and parasitically coupled with said first radiating element, said second radiating element comprising a second electrically conductive path. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A dual-band antenna, comprising:
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a ground plane; a meandering first radiating element in adjacent spaced-apart relationship with said ground plane, wherein said first radiating element faces away from said ground plane, and wherein said first radiating element comprises a first electrically conductive path; a second radiating element parasitically coupled to said first radiating element, wherein said second radiating element faces away from said ground plane, and wherein said second radiating element comprises a second electrically conductive path; and an impedance matching slot formed within said first radiating element. - View Dependent Claims (21, 22, 23)
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Specification