Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention
Reexamination Certificate
2009-04-22
2011-12-13
Donovan, Lincoln (Department: 2816)
Telecommunications
Transmitter and receiver at same station
With transmitter-receiver switching or interaction prevention
C455S553100
Reexamination Certificate
active
08078119
ABSTRACT:
A front end circuit for coupling an antenna to a first radio frequency (RF) transceiver and a second RF transceiver is contemplated. The RF transceivers have a signal input, a signal output, a receive enable line and a transmit enable line. In addition to an antenna port, the front end circuit has a first power amplifier and a first low noise amplifier both coupled to first RF transceiver, and a second power amplifier and a second low noise amplifier both coupled to the second RF transceiver. The front end circuit includes a matching network that couples the power amplifiers and the low noise amplifiers, the various outputs and inputs thereof being common.
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Donovan Lincoln
Englund Terry L
RFaxis, Inc.
Stetina Brunda Garred & Brucker
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