Folded Dipole Antenna Layout for Stable Wireless Microphone Links
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Solution Overview
Problem
Conventional wireless microphone systems face challenges in achieving high-speed, reliable audio transmission with low latency, maintaining compact size and weight, and addressing interference issues, while also being cost-effective and user-friendly.
Innovation Solution
The system incorporates a compact wireless microphone design with a folded dipole antenna array, a controller for real-time audio processing, and a bayonet fastener for a windshield, along with a diversified antenna approach to enhance communication range and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional dipole antenna is used in a wireless microphone system, then the device can achieve basic audio transmission, but the transmission range is limited and signal dropouts occur due to interference
Solution Approach 1:
The patent divides the single dipole antenna into multiple dipole elements (at least two) that are spatially separated and oriented in different directions. Each dipole element is fed with a phase-shifted signal to create a diversified antenna array that reduces signal dropouts and extends transmission range while maintaining compact dimensions suitable for portable wireless microphones.
Solution Approach 2:
The patent positions each dipole element with specific orientation and spacing to optimize local radiation patterns. The elements are arranged to provide coverage in different spatial directions, with each element contributing to overall system reliability in its preferred direction while collectively achieving omnidirectional or enhanced multi-directional coverage.
2Reliability
If the antenna is raised a predetermined distance from the ground plane, then communication range is improved, but the device height increases
Solution Approach 1:
The patent resolves the height conflict by transitioning from a single vertical dimension to a three-dimensional spatial arrangement. Multiple dipole elements are positioned at different heights and orientations above the ground plane, creating a volumetric antenna array that achieves extended communication range through spatial diversity without requiring excessive height in any single dimension. The elements are distributed in space to optimize radiation patterns while maintaining compact overall device dimensions.
Data Source
Figure 1A
Figure 1B
Figure 2A~2C
AI summary
The invention relates generally to an antenna of a wireless microphone system. In particular, the wireless microphone system may be configured to transmit audio via a dipole antenna. The dipole antenna may be folded and include conductive elements positioned on either side of a circuit board. Advantageously, the dipole antenna may facilitate effectively linking devices of the wireless microphone system and provide for a wide transmission range.