Telecommunications – Carrier wave repeater or relay system – With frequency conversion
Reexamination Certificate
2005-06-07
2005-06-07
Urban, Edward F. (Department: 2685)
Telecommunications
Carrier wave repeater or relay system
With frequency conversion
C455S017000, C455S025000, C455S277100, C370S293000, C370S279000, C370S282000
Reexamination Certificate
active
06904266
ABSTRACT:
An improved enhancer is disclosed which uses a switch matrix to increase the isolation between two antennas. For either an reverse link or forward link communication, the enhancer has a first antenna for receiving an incoming signal, and a receiver sub-system that amplifies and converts the incoming signal from the first antenna to a first predetermined frequency band. The enhancer further has a demodulator coupled to the receiver sub-system for demodulating the converted signal, and detecting timing information thereof. Also contained in the enhancer is a transmitter sub-system operable with the receiver sub-system that converts the signal from the receiver subsystem to a second predetermined frequency band and further amplifies the signal. After the signal is thus enhanced, a second antenna is used for further transmitting the amplified signal from the transmitted sub-system. The switch matrix controls connection switching among the first antenna, the second antenna, the transmitter sub-system, and the receiver sub-system, wherein the connection switching of the switch matrix is made based on the timing information detected by the demodulator and based on whether the incoming signal comes from a terminal or a base transceiver station.
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Jin Hang
Xu Guanghan
Xu Xinguang
Navini Networks, Inc.
Preston Gates & Ellis LLP
Urban Edward F.
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