Programmable Telemetry Transmitter for Multi-Rate Modulation
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Solution Overview
Problem
Traditional telemetry transmitters using analog components are expensive, inflexible, and limited in supporting multiple bandwidths and data rates, requiring multiple transmitter lineups or component changes to accommodate different modes and rates.
Innovation Solution
A multi-rate telemetry transmitter design featuring a programmable digital baseband lineup with a digital-to-analog converter and analog reconstruction filter, enabling support for various bit rates and modulation schemes using a single transmitter lineup without component replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional analog components are used in telemetry transmitters, then signal linearity and quality are preserved, but the transmitter becomes expensive and consumes significant current
Solution Approach 1:
The patent replaces traditional analog components with a digital baseband lineup consisting of digital signal processing units, digital modulators, and digital-to-analog converters. This substitution maintains signal quality through precise digital control while reducing power consumption and cost associated with high-performance analog components.
2Reliability
If traditional analog architectures with band-specific components are used, then signal quality is maintained, but the transmitter cannot support multiple modes without changing components or using multiple lineups
Solution Approach 1:
The patent implements a universal digital baseband lineup that can be programmatically reconfigured to support multiple modulation schemes and bandwidth requirements. The digital signal processing architecture allows a single transmitter to adapt to different modes through software control rather than hardware changes, enabling multi-mode operation with a single lineup.
Solution Approach 2:
The transmitter employs dynamic reconfiguration capabilities where the digital baseband parameters can be changed in real-time to adapt to different operational modes. This dynamic flexibility allows the system to switch between modulation schemes and bandwidth configurations without physical component changes.
3Reliability
If traditional analog architectures are designed for a specific transmission data rate, then the transmitter works reliably at that rate, but it cannot support multiple rates without changing analog components, using multiple clocks, or using multiple lineups
Solution Approach 1:
The patent creates a universal digital baseband system that can operate at multiple data rates through programmable clocking and sampling mechanisms. The digital architecture inherently supports rate changes without requiring multiple dedicated lineups, reducing the complexity from having to maintain separate analog circuits for each rate to a single reconfigurable digital system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables flexible operation across multiple bit rates and modulation schemes, reducing costs and complexity by allowing a single transmitter to adapt to different transmission requirements without changing internal components.
Implementation Method 1
A first digital-to-analog converter is in communication with the first digital baseband lineup
Data Source
AI summary
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.