Wireless Audio Receiver with Diversity Antenna Switching
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Solution Overview
Problem
Existing wireless audio receivers are limited in their ability to simultaneously demodulate both analog and digital modulated signals, often requiring multiple devices and cables, which increases setup time and weight, and cannot effectively utilize multiple antennas for diversity purposes when receiving a single RF signal.
Innovation Solution
A wireless audio receiver system utilizing multiple diversity antennas and signal processing paths to operate in full diversity or switched diversity mode, allowing simultaneous demodulation of analog and digital signals, and generating both analog and digital audio outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple wireless audio receivers are used to demodulate different signal types, then signal type compatibility is improved, but device complexity and cable management increase
Solution Approach 1:
The patent combines multiple demodulation capabilities (analog FM, digital PM, digital QAM) into a single wireless audio receiver device. The receiver includes multiple signal processing paths that can simultaneously or alternatively process different modulation types, eliminating the need for multiple separate receivers and reducing cable management complexity.
Solution Approach 2:
The wireless audio receiver is designed with universal functionality to demodulate multiple types of modulated signals including analog FM, digital PM, and digital QAM signals. This multi-functional design allows a single device to replace multiple specialized receivers, improving adaptability while maintaining manageable complexity through integrated architecture.
2Reliability
If multiple diversity antennas are used for single RF signal reception, then signal diversity is improved, but antenna utilization efficiency deteriorates
Solution Approach 1:
The patent implements dynamic antenna switching that adapts the antenna configuration based on the number of received RF signals. When a single RF signal is received, the system dynamically switches between diversity antennas to maximize signal quality. When multiple RF signals are received, the system dynamically allocates different antennas to different signals, optimizing utilization efficiency in both scenarios.
Solution Approach 2:
The system changes the operational parameters of the antenna system based on signal conditions. For single RF signal reception, it switches between diversity antennas to exploit signal diversity. For multiple RF signals, it reconfigures the antenna routing to assign different antennas to different signals, effectively changing the system state to match the operational requirements.
3Device complexity
If existing receivers use single antenna for single RF signal, then device simplicity is maintained, but signal diversity capability is lost
Solution Approach 1:
The patent segments the antenna system into multiple diversity antennas, each capable of receiving RF signals independently. This segmentation provides signal diversity capability while maintaining relatively simple device architecture through modular design. The segmented antenna system can be selectively activated based on the number of RF signals being received.
Data Source
AI summary
A wireless audio receiver system and method is provided that is capable of receiving one or more radio frequency (RF) signals containing audio signals modulated by analog and/or digital modulation schemes, operating in full diversity mode or switched diversity mode, demodulating the RF signals, and outputting analog audio signals and a combined digital audio signal. The system and method switches multiple diversity antennas to route received RF signals to respective RF signal processing paths. Digitized passband modulated signals are demodulated to generate analog audio signals, and a combined digital audio signal with one or multiple channels may also be generated. The system and method are capable of demodulating signals modulated using a wide variety of modulation schemes. Reconfigurable computing components are utilized to demodulate digitized passband modulated signals and generate the analog audio signals and combined digital audio signal.