HANDHELD ELECTRONIC DEVICES WITH ISOLATED ANTENNAS
First Claim
1. Wireless handheld electronic device circuitry comprising:
- a first antenna comprising a first planar resonating element having an antenna isolation element formed from a first arm and having a second arm; and
a second antenna having a second planar resonating element and a feed, wherein the first arm resonates at a frequency which minimizes currents induced by the second arm at the feed of the second antenna.
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Abstract
Handheld electronic devices are provided that contain wireless communications circuitry having at least first and second antennas. An antenna isolation element reduces signal interference between the antennas, so that the antennas may be used in close proximity to each other. A planar ground element may be used as a ground by the first and second antennas. The first antenna may be formed using a hybrid planar-inverted-F and slot arrangement in which a planar resonating element is located above a rectangular slot in the planar ground element. The second antenna may be formed from an L-shaped strip. The planar resonating element of the first antenna may have first and second arms. The first arm may resonate at a common frequency with the second antenna and may serve as the isolation element. The second arm may resonate at approximately the same frequency as the slot portion of the hybrid antenna.
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Citations
5 Claims
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1. Wireless handheld electronic device circuitry comprising:
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a first antenna comprising a first planar resonating element having an antenna isolation element formed from a first arm and having a second arm; and a second antenna having a second planar resonating element and a feed, wherein the first arm resonates at a frequency which minimizes currents induced by the second arm at the feed of the second antenna. - View Dependent Claims (2, 3, 4, 5)
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Specification