Antenna With Progressive Gap For Gain Size Tradeoff
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Solution Overview
Problem
Current wireless communication antennas face a challenge in miniaturization as they tend to lose gain when their size is reduced, making it difficult to achieve both small size and high performance, especially in high-frequency bands above 10 GHz.
Innovation Solution
The design incorporates a unique antenna structure with a first and second conductor portion separated by a gap whose width progressively increases, connected by a third conductor portion, allowing for adjustable frequency characteristics and improved gain even at smaller sizes by altering the size of the antenna.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna size is reduced to achieve miniaturization, then the device size is reduced, but the antenna gain decreases
Solution Approach 1:
The antenna is divided into multiple conductor portions (first, second, and third conductor portions) separated by gaps. This segmentation allows the antenna to achieve resonant characteristics at desired frequencies while maintaining a compact overall size, resolving the contradiction between miniaturization and gain maintenance.
Solution Approach 2:
The gap width is designed to vary progressively along the antenna structure, creating different local electromagnetic properties. This non-uniform gap configuration optimizes the current distribution and impedance characteristics locally, enabling high gain in a small overall antenna structure.
2Volume of moving object
If the antenna size is reduced, then the device becomes more compact, but the signal transmission efficiency deteriorates
Solution Approach 1:
The antenna structure incorporates variable gap widths that create dynamic current distribution patterns. The progressive gap width variation optimizes the electromagnetic field confinement and reduces energy loss, maintaining high transmission efficiency despite the reduced antenna size.
3Adaptability or versatility
If the gap width is increased to adjust frequency characteristics, then the impedance is adjusted, but the antenna size increases
Solution Approach 1:
Different sections of the antenna have different gap widths, allowing independent optimization of frequency characteristics in each section. This local variation enables precise impedance and frequency tuning without requiring an overall increase in antenna dimensions.
Data Source
AI summary
An antenna including: a first conductor portion including a power supply point at which one of a pair of differential signals is input; a second conductor portion including a power supply point at which another one of the pair of differential signals is input, the second conductor portion being separated by a gap from the first conductor portion; and a third conductor portion that connects the first conductor portion with the second conductor portion, wherein the gap includes a portion having a width that becomes progressively wider in a direction moving away from the third conductor portion.