Communications: radio wave antennas – Antennas – With radio cabinet
Reexamination Certificate
2011-03-01
2011-03-01
Phan, Tho G (Department: 2821)
Communications: radio wave antennas
Antennas
With radio cabinet
C343S7000MS
Reexamination Certificate
active
07898485
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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Caballero Ruben
Hill Robert J.
Schlub Robert W.
Zavala Juan
Apple Inc.
Kellogg David C.
Phan Tho G
Treyz G. Victor
Treyz Law Group
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