Apparatus for transmitting a signal below a standard...

Details Apparatus for transmitting a signal below a standard... Apparatus for transmitting a signal below a standard...

2011-06-07

2011-06-07

Lee, John (Department: 2618)

Telecommunications

Transmitter

Power control, power supply, or bias voltage supply

C455S522000, C455S115100, C455S126000

Reexamination Certificate

active

07957711

ABSTRACT:
A transmitter includes a detection element to determine when a current power requirement of a communication link is less than the standard transmit power. The current power requirement may be determined by a current operation condition of the communication link, for instance. The transmit power of the transmitter may be set to be less than the standard power in any of a variety of ways. For example, a center tap voltage of the transmitter may be reduced. In another example, a class of operation of the transmitter may be changed. In yet another example, the transmitter may include a current mirror having a plurality of diode-connected transistors coupled in parallel, thereby reducing the current at output terminals of the transmitter. Reducing the current at the output terminals decreases the output power of the transmitter, which may reduce the power consumed by the transmitter.

REFERENCES:
patent: 5737407 (1998-04-01), Graumann
patent: 5774797 (1998-06-01), Kawano et al.
patent: 6483865 (2002-11-01), Beierle

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