Foldable Multi-Faced Antenna Array for Direction Finding
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Solution Overview
Problem
Existing radio direction finding antenna systems face challenges in providing effective signal separation across multiple frequency bands due to practical constraints such as size, limiting their usefulness over a limited frequency range.
Innovation Solution
A foldable, multi-faced antenna array constructed from conductive cloth and flexible materials, incorporating subarrays of loop, bow-tie, and micro-patch antenna elements, allowing for easy setup and transport, and adaptable to different frequency bands by folding into a compact shape for storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a foldable, multi-faced antenna array with multiple subarrays is used, then signal reception across multiple frequency bands is improved, but device complexity increases
Solution Approach 1:
The antenna system is divided into multiple independent subarrays, each designed to operate over a specific frequency band. Each subarray contains antenna elements (such as loop, bow-tie, or micro-patch elements) configured for particular frequency ranges, allowing the system to cover broader频谱 while maintaining optimized performance for each band through modular segmentation.
Solution Approach 2:
The antenna array structure is designed to perform multiple functions by incorporating different types of antenna elements (loop, bow-tie, micro-patch) within the same physical framework. This multi-functional design allows a single antenna system to operate across multiple frequency bands and support various reception modes, reducing the need for separate antenna systems for different bands.
2Measurement precision
If antenna elements are arranged in a multi-faced structure, then direction finding accuracy is improved, but ease of operation deteriorates due to setup complexity
Solution Approach 1:
The antenna array employs a foldable, dynamic structure that can be easily deployed and reconfigured. The multi-faced structure with flexible connections allows the antenna to be compactly stored and quickly set up by simple unfolding actions, transforming from a complex static structure into an easily operable dynamic system that maintains geometric integrity for accurate direction finding.
Solution Approach 2:
The antenna structure utilizes flexible materials and thin-film constructions that enable the multi-faced array to be folded into a compact form for portability while maintaining the rigid geometric relationships necessary for accurate direction finding when deployed. The flexible nature of the structure simplifies setup and storage operations.
Data Source
AI summary
An easily transportable multiband antenna array. The antenna array is fabricated on a multi-sided structure, such as a four-sided cube, made from a wire frame and fabric. The multi-sided structure is constructed so that it may be folded by first folding the faces against each other, and then twisting them to form a stack of loops. The antenna elements are fabricated on the faces, and comprise at least a loop antenna around the perimeter of each face, and a bow-tie antenna attached to each face. The antenna elements are fabricated and attached so that they do not inhibit the folding of the structure.