Polygon Reflecting Ring Antenna for Compact Direction Finding
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Solution Overview
Problem
Existing direction finding technologies require multiple antennas with large directivity and complex structures, occupying significant space and lacking accuracy in determining the direction of mobile devices.
Innovation Solution
A direction finding antenna design featuring a substrate with a closed polygon reflecting ring and radiating elements, enhancing directivity and accuracy while minimizing size through a simple structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a plurality of antennas with large directivity is used for direction finding, then the accuracy of direction finding is improved, but the device complexity and occupied space increase
Solution Approach 1:
The patent merges multiple antenna elements into a single integrated antenna structure. The antenna comprises a feed arm, reflector arm, and director arm arranged in a planar configuration, combining the functions of multiple antennas into one unified structure that achieves direction finding capability without requiring separate antenna units for each direction.
Solution Approach 2:
The patent transitions from a three-dimensional spatial arrangement of multiple antennas to a two-dimensional planar structure. The antenna elements (feed arm, reflector arm, director arm) are arranged in a flat configuration, reducing the spatial footprint while maintaining the directional radiation pattern needed for accurate direction finding.
2Measurement precision
If a plurality of antennas with large directivity is used for direction finding, then the accuracy of direction finding is improved, but the occupied space increases
Solution Approach 1:
The patent merges multiple antenna elements into a single integrated antenna structure. The antenna comprises a feed arm, reflector arm, and director arm arranged in a planar configuration, combining the functions of multiple antennas into one unified structure that achieves direction finding capability without requiring separate antenna units for each direction.
Solution Approach 2:
The patent transitions from a three-dimensional spatial arrangement of multiple antennas to a two-dimensional planar structure. The antenna elements (feed arm, reflector arm, director arm) are arranged in a flat configuration, reducing the spatial footprint while maintaining the directional radiation pattern needed for accurate direction finding.
3Reliability
If multiple antennas are used for direction finding, then the directivity is improved, but the structure becomes complex
Solution Approach 1:
The patent merges multiple antenna elements into a single integrated antenna structure. The antenna comprises a feed arm, reflector arm, and director arm arranged in a planar configuration, combining the functions of multiple antennas into one unified structure that achieves direction finding capability without requiring separate antenna units for each direction.
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
The antenna achieves improved direction finding accuracy and miniaturization by utilizing a continuous current distribution from a closed reflecting ring, reducing beamwidth and enhancing signal reflection.
Implementation Method 1
each of the side wires serves as a reflector to reflect a signal sent by each of the radiating elements, increasing a directivity of each of the antennas
Data Source
AI summary
A direction finding antenna includes a substrate, a reflecting ring, and a plurality of radiating elements, wherein the substrate has a surface. The reflecting ring is disposed on the surface of the substrate and is formed by connecting a plurality of side wires and is a closed polygon. Each of the side wires forms a reflector. The radiating elements are disposed on the surface of the substrate and are respectively located on an outside of the side wires, and each of the radiating elements corresponds to one of the side wires. Each of the side wires and each of the corresponding radiating elements form an antenna structure, and the antenna structures face different directions, thereby providing the needed accuracy of direction finding in different directions.