Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2004-12-28
2009-11-17
Le, Nhan T (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S575500, C379S433130, C343S823000
Reexamination Certificate
active
07620436
ABSTRACT:
A portable communication device (100) has an antenna with predominantly upward antenna radiation patterns at GPS frequencies. The portable communication device (100) includes a housing with a base portion (240) enclosing base portion circuitry (241) and an upper clamshell portion (242) enclosing upper clamshell portion circuitry (243). The portable communication device (100) also includes a hinge assembly (244) coupled to the base portion (240) and the upper clamshell portion (242) for rotatably coupling the upper clamshell portion (242) to the base portion (240) and an antenna element (236) physically coupled to a first side (248) of the upper clamshell portion (242) and electrically coupled to a ground of the upper clamshell portion circuitry (243). The ground of the upper clamshell portion circuitry (243) is electrically connected to a ground of the base portion circuitry (241) by one side of the hinge assembly (244) located closest to a second side (250) of the upper clamshell portion (242) opposite the first side (248).
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Pertti Vainikainen, Jani Ollikainen, Outi Kivekas, Ilkka Kelander, “Resonator-Based Analysis of the Combination of Mobile Handset Antenna and Chassis”, IEEE Transactions on Antennas and Propagation, vol. 50, No. 10, Oct. 2002, 12 pages.
Abdul-Gaffoor Mohammed R.
Krenz Eric L.
Chen Sylvia
Collopy Daniel R.
Le Nhan T
Motorola Inc.
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