A method and apparatus for a multi-mode and multi-rate telemetry
transmitter includes a digital baseband lineup, a digital-to-analog
converter ("DAC"), and an analog reconstruction filter. The digital
baseband lineup may be programmed to any desired bit rate, enabling the
transmitter to support multi-rate capabilities. Different coefficients
and numerical values may be programmed in the digital baseband lineup to
support any desired modulation scheme, enabling the transmitter to
support multi-mode capabilities. The digital baseband lineup may be
designed by implementing up-sampling stages, down-sampling stages, and
digital filters in a variety of arrangements.