Telecommunications – Transmitter and receiver at same station
Reexamination Certificate
2011-01-18
2011-01-18
Gesesse, Tilahun (Department: 2618)
Telecommunications
Transmitter and receiver at same station
C455S127100, C455S277100, C455S101000
Reexamination Certificate
active
07873330
ABSTRACT:
A transceiver circuit and a method in a wireless communication network are provided, where a signal power level for a signal received at the transceiver circuit is measured and compared to a predefined threshold power level. At least two groups of power amplifiers may be used, where one group is optimized for high efficiency above the predefined threshold power level, and one group is optimized for high efficiency below the predefined threshold power level. The amplifiers may be used to amplify the received signal depending on the signal power level in relation to the predefined power threshold level. The signal may then be filtered by duplex filters and forwarded to a diversity antenna or a main antenna where it is transmitted over an air interface.
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PCT/EP2007/054704 International Search Report with Written Opinion, Jul. 23, 2007, 11 pages.
Camp William O.
Johnson Phillip Marc
Tudosoiu Bogdan
Gesesse Tilahun
Harrity & Harrity LLP
Sony Ericsson Mobile Communications AB
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