Telecommunications – Carrier wave repeater or relay system – With frequency conversion
Reexamination Certificate
2007-11-26
2010-11-09
Ferguson, Keith T (Department: 2618)
Telecommunications
Carrier wave repeater or relay system
With frequency conversion
C455S007000, C455S011100, C455S024000, C455S550100, C455S090300, C370S315000, C370S310000, C370S318000, C343S702000, C343S824000
Reexamination Certificate
active
07831203
ABSTRACT:
The present invention relates to a Radio Frequency Repeater to prevent oscillation with canceling a feedback interference signal between transmitting and receiving antenna with built-in transmitting and receiving antenna in wireless mobile communication repeater. A radio frequency repeater for canceling a feedback interference signal has a downlink path from a base station to a terminal and an uplink path from a terminal to a base station, and said downlink path and said uplink path is separated and combination by a duplexer.
REFERENCES:
patent: 6934511 (2005-08-01), Lovinggood et al.
patent: 2001/0038670 (2001-11-01), Whight
patent: 2003/0211827 (2003-11-01), Yonezawa et al.
patent: 2010/0136966 (2010-06-01), Pergal
Choi Hyeong Soo
Kim Chang Soon
Lee Mi Ja
Lee Seong Jae
Ferguson Keith T
Greenberg Laurence A.
Locher Ralph E.
RF Window Co. Ltd
Stemer Werner H.
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