Single Digital Counter Smart Antenna Interface
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Solution Overview
Problem
Existing smart antenna technologies require significant digital chip area and complex hardware for implementing both Mode A and Mode B operations, lacking efficient hardware reuse and user-friendly decimal/hexadecimal format translation.
Innovation Solution
A programmable digital counter-based all-digital smart antenna interface that uses a single digital counter for both transmission and reception, tolerating wide symbol width variations and translating symbols into decimal or hexadecimal format, requiring minimal digital chip area and using only a few digital flip-flops and logic gates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional smart antenna interfaces are used for both Mode A and Mode B operations, then both modes can be supported, but significant digital chip area and complex hardware are required
Solution Approach 1:
The patent implements a universal smart antenna interface that can operate in both Mode A and Mode B using the same hardware components. A single digital counter and digital I/O pin are designed to perform multiple functions: generating analog symbol waveforms in Mode A, and sampling/receiving symbols in Mode B. The counter is programmable to adapt its behavior based on the operating mode, eliminating the need for separate dedicated hardware for each mode and significantly reducing digital chip area.
2Adaptability or versatility
If traditional smart antenna interfaces are used for both Mode A and Mode B operations, then both modes can be supported, but complex hardware is required
Solution Approach 1:
The patent merges the functionality of separate Mode A and Mode B interfaces into a single unified digital counter-based system. The same counter generates waveforms for Mode A transmission and samples incoming symbols for Mode B reception. Digital I/O pins are multiplexed to handle both transmission and reception functions. This consolidation reduces hardware complexity by eliminating redundant components and simplifying the overall interface architecture.
Solution Approach 2:
The digital counter is designed as a universal component that can operate in different modes. By programming the counter with appropriate parameters, it can generate analog symbol waveforms for Mode A or sample incoming symbols for Mode B. This multi-functional design eliminates the need for separate dedicated hardware circuits for each mode, significantly reducing device complexity.
3Device complexity
If fixed symbol width is used in digital counter, then timing is simplified, but wide variation of symbol width cannot be tolerated
Solution Approach 1:
The patent implements a programmable digital counter where the symbol width parameter can be dynamically adjusted based on the specific application requirements. The counter is configured with programmable parameters that allow it to adapt to different symbol widths while maintaining accurate timing control. This dynamic configurability enables the system to tolerate wide variations in symbol width without requiring multiple dedicated counters for different width requirements.
Data Source
AI summary
This invention samples and transmits the CEA-909 standard smart antenna analog pulse train waveforms using only a digital I/O pin for both mode A and mode B operation. This invention implements the smart antenna interface based on a single digital programmable counter. This counter is programmable so that it can tolerate or produce wide variation of symbol width.