Antenna with Current Reversing Element for Small Size
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Solution Overview
Problem
Physically small and electrically short antennas face challenges in effectively radiating radio waves due to limitations in their design and structure, necessitating improvements for enhanced performance.
Innovation Solution
The antenna assembly incorporates a current reversing element, along with a first and second conductive element, a ground plane, and a tuning element, where the first conductive element has a higher Q-value and impedance than the second, and the current reversing element includes an inductive component, optimizing the directional flow of currents to enhance electromagnetic field strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If physically small and electrically short antennas are used, then device size is reduced, but radiation effectiveness deteriorates
Solution Approach 1:
The antenna is divided into multiple conductive elements (first conductive element, second conductive element, current reversing element, third conductive element) that work together to achieve effective radiation despite the overall small size. Each element serves a specific function in the radiation process.
Solution Approach 2:
The current reversing element acts as an intermediary component that reverses the current induced on the first conductive element, enabling effective radiation from the small antenna structure by controlling current distribution across the elements.
2Power
If the first conductive element has higher Q-value and impedance than the second, then electromagnetic field strength is enhanced, but manufacturing complexity increases
Solution Approach 1:
Different conductive elements are assigned different Q-values and impedance characteristics optimized for their specific roles. The first conductive element has higher Q-value and impedance for field strength, while the second has lower values for current reversal, with each element's properties tailored to its function.
Solution Approach 2:
The patent specifies different electrical parameters (Q-value, impedance) for different conductive elements to optimize performance. The first conductive element has higher Q-value and impedance than the second, creating the necessary parameter variations to enhance electromagnetic field strength.
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
This configuration increases the strength of the electromagnetic field and optimizes antenna performance for smaller, shorter antennas without significant cost increases, effectively addressing the limitations of existing small antenna designs.
Implementation Method 1
the current reversing element is configured to reverse the current induced on the first conductive element by the radio frequency source
Implementation Method 2
the current reversing element includes an inductive component
Data Source
Figure 1
AI summary
An antenna assembly including a first conductive element including a first Q-value and a first impedance value, a second conductive element including a second Q-value and a second impedance value, and a current reversing element in communication with the first conductive element and the second conductive element.