| 摘要 |
A method and apparatus for a multi-mode and multi-rate telemetry transmitter (1) includes a digital baseband lineup (3), a digital-to-analog converter ("DAC") (4), and an analog reconstruction filter (5). The digital baseband lineup (3) 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 (3) 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 (6, 9, 12, 13), down-sampling stages (10, 18), and digital filters (7,8) in a variety of arrangements. |
