Wireless Microphone System Antenna Pairing and Resource Management
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Solution Overview
Problem
Wireless microphone systems face challenges in managing multiple microphones simultaneously, leading to inter-modulation distortion and aesthetically unappealing configurations due to crowded wireless spectra, especially in environments like entertainment venues.
Innovation Solution
A wireless microphone system that combines RF signals using paired antennas and resource managers, supporting multiple receivers and microphones, with synchronization and efficient spectrum allocation through DECT standards, coaxial links, and TDMA, to manage multiple access schemes and allocate timeslots dynamically based on signal content and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple wireless microphones are supported simultaneously, then the system capacity increases, but inter-modulation distortion occurs due to crowded wireless spectrum
Solution Approach 1:
The patent divides the wireless microphone system into multiple independent receiver units, each handling a subset of microphones. This segmentation allows each receiver to manage fewer frequency channels simultaneously, reducing inter-modulation distortion while maintaining overall system capacity through coordinated operation of multiple receivers.
Solution Approach 2:
The patent introduces a central controller as an intermediary that coordinates frequency allocation and resource management across multiple receivers. This mediator optimizes the wireless spectrum usage by dynamically assigning frequency channels to different receiver-microphone pairs, preventing spectral crowding and reducing inter-modulation distortion.
2Device complexity
If processing equipment is closely placed to support multiple microphones, then system integration improves, but the configuration becomes aesthetically unappealing
Solution Approach 1:
The patent divides the processing equipment into multiple distributed receiver units rather than one centralized unit. This segmentation allows the system to maintain functional integration while distributing hardware across aesthetically pleasing locations, such as different stages or positions in an entertainment venue.
Solution Approach 2:
Each receiver unit is designed as a universal, self-contained module capable of independently processing wireless microphone signals. This multi-functionality allows identical aesthetic units to be deployed in various configurations and locations without requiring complex integrated equipment, maintaining both visual appeal and system functionality.
3Productivity
If multiple receivers are co-located to support different wireless microphones, then spectrum utilization improves, but synchronization complexity increases
Solution Approach 1:
The patent implements a feedback-based synchronization mechanism where the central controller receives status information from each receiver and adjusts frequency allocations and timing accordingly. This feedback loop enables coordinated operation of co-located receivers, maintaining synchronization while optimizing spectrum utilization across the distributed system.
Solution Approach 2:
The patent employs preliminary synchronization setup where receivers are pre-configured with timing and frequency reference information before operation. This preliminary action establishes a common synchronization framework that simplifies ongoing coordinated operation of multiple co-located receivers, reducing real-time synchronization complexity.
Data Source
AI summary
A wireless microphone system efficiently combines a pair of antennas so that radio frequency (RF) signals may be transmitted to and from multiple receivers and multiple wireless microphones. The wireless microphone system supports a general radio access technology and may comply with a Digital Enhanced Cordless Telecommunications (DECT) specification. The resource manager combines a received RF component with a first digital component via a first coaxial link to a connected receiver. The receiver also combines a transmitted RF component with a second digital component via a second coaxial link to the resource manager. The first digital component further includes synchronization and data sub-components, which are separated at the receiver.