Electrically Small Antenna Tuning by Structural Deformation
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Solution Overview
Problem
Tuning of electrically small antennas is difficult and often results in loss of bandwidth for wireless signals.
Innovation Solution
Applying forces to the support structure of the antenna to change the shape or dimensions of the radiating element, using methods such as mechanical, thermal, or torsional adjustments, or electronic components like capacitors and varactor diodes to alter resonance frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If tuning is performed on electrically small antennas to adjust resonance frequency, then frequency adjustment capability is improved, but bandwidth is lost
Solution Approach 1:
The patent applies dynamics by making the antenna structure adjustable through mechanical forces. The radiating element's shape and dimensions are dynamically changed by applying forces to the support structure, enabling frequency tuning without fixed configurations. This dynamic adjustment allows the antenna to adapt resonance frequency while maintaining bandwidth through controlled deformation rather than static component changes.
2Volume of moving object
If electrically small antennas are designed to fit into small spaces, then compactness is improved, but tuning difficulty increases
Solution Approach 1:
The patent replaces traditional mechanical tuning mechanisms (such as movable components, sliders, or complex adjustment assemblies) with a force application system. By applying forces directly to the support structure to deform the radiating element, the system achieves tuning capability within a compact form factor. This mechanics substitution eliminates the need for bulky tuning mechanisms while maintaining ease of operation through direct force control.
3Adaptability or versatility
If traditional tuning methods are used on electrically small antennas, then frequency adjustment is achieved, but implementation complexity increases
Solution Approach 1:
The patent extracts the tuning function from complex mechanical mechanisms and isolates it to a simple force application system. By removing unnecessary mechanical components and retaining only the essential force-deformation-tuning relationship, the system achieves frequency adjustment with minimal complexity. The support structure itself becomes the tuning mechanism through controlled deformation, eliminating separate tuning devices.
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
Enables easy and automatic tuning of electrically small antennas without loss of bandwidth, allowing for precise frequency adjustment.
Implementation Method 1
a radiating element (12) configured to transmit and/or receive a wireless signal
Implementation Method 2
applying forces to the support structure (14) to change a shape or a dimension of the radiating element (12)
Implementation Method 3
increase or decrease a frequency at which the electrically small antenna resonates
Data Source
AI summary
A method of tuning an electrically small antenna comprising a radiating element and a support structure comprises applying a force to the support structure to change a shape or a dimension of the radiating element to increase or decrease a frequency at which the electrically small antenna resonates.