Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention
Reexamination Certificate
2009-01-22
2010-11-30
Dao, Minh D (Department: 2618)
Telecommunications
Transmitter and receiver at same station
With transmitter-receiver switching or interaction prevention
C455S127100, C455S269000, C455S550100, C342S374000, C343S876000
Reexamination Certificate
active
07844231
ABSTRACT:
An apparatus and method in a Time Division Duplex (TDD) wireless communication system are provided. The apparatus includes two 90° hybrid couplers and a phase converter block. The two 90° hybrid couplers each separate a signal into two signals and output the two signals, and each couple two signals and output the coupled signal. The phase converter block connects between the two 90° hybrid couplers. In a transmission mode, the phase converter block identically varies phases of two signals and outputs the varied two signals to the second 90° hybrid coupler. In a reception mode, the phase converter block varies phases of two signals and outputs the varied two signals to the first 90° hybrid coupler.
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Dao Minh D
Jefferson IP Law, LLP
Samsung Electronics Co,. Ltd.
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