HANDHELD ELECTRONIC DEVICES WITH ISOLATED ANTENNAS
First Claim
1. A handheld electronic device, comprising:
- a housing having lateral dimensions;
a ground plane having at least some lateral dimensions substantially equal to the lateral dimensions of the housing, wherein the ground plane is formed at least partly from a conductive layer on a printed circuit board; and
an antenna resonating element that is formed from a metal deposited on a plastic substrate, wherein at least some of the antenna resonating element is located above the ground plane and wherein at least some of the ground plane underneath the antenna resonating element has been removed to form a dielectric-filled region.
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Accused Products
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.
99 Citations
10 Claims
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1. A handheld electronic device, comprising:
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a housing having lateral dimensions; a ground plane having at least some lateral dimensions substantially equal to the lateral dimensions of the housing, wherein the ground plane is formed at least partly from a conductive layer on a printed circuit board; and an antenna resonating element that is formed from a metal deposited on a plastic substrate, wherein at least some of the antenna resonating element is located above the ground plane and wherein at least some of the ground plane underneath the antenna resonating element has been removed to form a dielectric-filled region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. Wireless communications circuitry in an electronic device, the wireless communications circuitry comprising:
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first and second antennas; and an isolation element that reduces interference between the first antenna and the second antenna, wherein the isolation element is coplanar with the first antenna.
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Specification