Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2007-12-04
2007-12-04
Tsang, Fan (Department: 2614)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S343100
Reexamination Certificate
active
09938209
ABSTRACT:
A radio frequency (RF) transceiver having improved low power operating modes. The RF transceiver comprises: 1) a radio frequency (RF) modem section comprising: a) receive path circuitry for receiving and down-converting an incoming RF signal to thereby produce an incoming baseband signal; and b) transmit path circuitry for receiving and up-converting an outgoing baseband signal to thereby produce an outgoing RF signal; 2) a baseband section comprising baseband circuitry for receiving and processing the incoming baseband signal and for generating the outgoing baseband signal; and 3) a power-saving apparatus for determining that the baseband section is idle and, in response to the determination, reducing a power supply voltage providing power to the baseband section.
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Lamb Aaron D.
Malone Lawrence J.
Anwah Olisa
National Semiconductor Corporation
Tsang Fan
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