Arc-Shaped Feeding Antenna for Multi-Frequency Wireless Devices
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Solution Overview
Problem
Current antenna designs, such as helical and monopole antennas, are limited to single-band frequencies, which restricts their versatility and efficiency in modern wireless communication devices that require multi-frequency capabilities.
Innovation Solution
A coaxial cable-fed antenna with an arc-shaped feeding portion, a radiator, and a grounding portion, optionally with a helix structure, that allows for adjustable frequency resonance through bending portions and a fixing portion for versatile integration, enabling multi-frequency operation and reduced manufacturing complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If helical antenna or monopole antenna is used separately, then single-band frequency operation is achieved, but multi-frequency capability is limited
Solution Approach 1:
The patent combines a helical antenna structure and a monopole antenna structure into a single integrated antenna system. The helical portion provides resonance at lower frequencies while the monopole portion extends the resonance to higher frequencies, enabling dual-band or multi-frequency operation without requiring separate antenna structures for each frequency band.
Solution Approach 2:
The integrated antenna structure serves multiple functions by supporting resonance at multiple frequency bands simultaneously. The helical portion and monopole portion work together to provide both low-frequency and high-frequency resonance capabilities, making the antenna universal for various wireless communication standards.
2Adaptability or versatility
If multiple separate antennas are used for multi-frequency operation, then frequency versatility is improved, but device size and manufacturing complexity increase
Solution Approach 1:
The patent merges multiple antenna functions into a single physical structure. The helical antenna and monopole antenna are integrated such that they share common structural elements and mounting requirements, reducing the overall volume compared to using separate antennas for each frequency band.
Solution Approach 2:
The monopole portion is positioned to extend from the helical portion, creating a nested or integrated configuration where the two antenna types occupy overlapping or adjacent spatial volumes, thereby minimizing the total space required for multi-frequency operation.
3Reliability
If base structure is added for fixing and grounding, then antenna stability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent integrates the grounding and feeding functions directly into the antenna structure itself. The helical portion and monopole portion are configured to provide their own grounding paths and feeding points, eliminating the need for a separate base structure and reducing manufacturing complexity while maintaining reliable electrical connections.
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 efficient wireless signal transmission and reception across a wide range of frequencies, maintaining performance comparable to Planar Inverted F Antennas (PIFA) with improved manufacturing simplicity and lower costs.
Implementation Method 1
The antenna receives or transmits wireless signals by using a coaxial cable to feed current
Implementation Method 2
The grounding portion of the antenna can comprise a helix structure
Implementation Method 3
The radiating element is resonated with high frequency such as 5 GHz, and the helix element is resonated with low frequency such as 2.4 GHz
Data Source
AI summary
Antenna, antenna combination, and portable electronic device having the antenna or the antenna combination are disclosed. The antenna comprises a radiator, a grounding portion, and an arc-shaped feeding portion connected with a coaxial cable for feeding electronically. A first end of the arc-shaped feeding portion is connected with the radiator, and a second end of the arc-shaped feeding portion is connected with the grounding portion.