Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2007-04-11
2010-10-19
Urban, Edward (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S553100, C455S078000, C455S082000, C455S083000, C370S339000
Reexamination Certificate
active
07818029
ABSTRACT:
Handheld electronic devices are provided that contain wireless communications circuitry. The wireless communications circuitry may have first and second transceiver circuits that operate in the same radio-frequency band using different communications protocols. The wireless communications circuitry may have a configurable radio-frequency combiner and divider circuit that is coupled between an antenna and the first and second transceiver circuits. The combiner and divider circuit can be configured to support simultaneous use of the antenna by the first and second transceiver circuits. When simultaneous use is not required, the combiner and divider circuit can be used by either the first transceiver circuit or the second transceiver circuit.
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ANADIGICS “AWL6254 Product Brief.” Rev 1.2, Sep. 2005.
Apple Inc.
Hanidu Ganiyu
Kellogg David C.
Treyz G. Victor
Treyz Law Group
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