Segmented Terminal Antenna Layout for Uniform Current Distribution
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Solution Overview
Problem
The radiation efficiency of terminal antennas is compromised due to non-uniform current distribution and interference from metal components in terminal devices, leading to decreased communication performance.
Innovation Solution
A terminal antenna design featuring radiators with lengths forming a descending arithmetic progression and varying capacitances, coupled with interdigital structures and suspended copper foils to enhance current distribution and reduce losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional antenna designs are used, then the structure is simple, but the radiation efficiency is low due to non-uniform current distribution and metal interference
Solution Approach 1:
The antenna is divided into multiple radiators with lengths forming a descending arithmetic progression, creating multiple gaps between adjacent radiators. This segmentation allows for controlled current distribution and reduced metal interference effects, improving radiation efficiency while maintaining manageable structural complexity
Solution Approach 2:
Different gaps between radiators are designed with different coupling capacitances, creating local variations in electrical properties. The first gap has a larger coupling capacitance than the second gap, which optimizes current distribution locally to reduce losses and improve overall radiation efficiency
2Loss of energy
If uniform radiator lengths are used, then the manufacturing is easier, but the current distribution becomes non-uniform causing energy losses
Solution Approach 1:
The radiator lengths are changed from uniform to a descending arithmetic progression, creating systematic variations in length parameters. This parameter change optimizes current distribution across the radiators, reducing current losses while the arithmetic progression pattern simplifies the manufacturing precision requirements compared to arbitrary non-uniform lengths
3Loss of energy
If larger coupling capacitance is used between radiators, then the current distribution improves, but the antenna volume increases
Solution Approach 1:
The antenna structure utilizes three-dimensional spatial arrangement of radiators with different lengths and orientations. By arranging radiators in multiple dimensions with descending length progression, the design achieves effective coupling capacitance without requiring excessive volume, as the dimensional arrangement itself contributes to the electrical coupling
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 design improves radiation efficiency and reduces interference, facilitating better communication performance in terminal devices.
Implementation Method 1
A coupling capacitance formed by the first radiator and the second radiator through the corresponding gap is greater than a coupling capacitance formed by the second radiator and the third radiator through the corresponding gap
Data Source
AI summary
Embodiments of this application relate to the field of antennas, and provide a terminal antenna. The terminal antenna includes n radiators. The n radiators include a first radiator, a second radiator, and a third radiator. Lengths of the first radiator, the second radiator, and the third radiator form a descending arithmetic progression. The first radiator, the second radiator, and the third radiator are arranged in sequence to form two gaps. A coupling capacitance formed by the first radiator and the second radiator through the corresponding gap is greater than a coupling capacitance formed by the second radiator and the third radiator through the corresponding gap. The first radiator, the second radiator, and the third radiator are any three of the n radiators distributed in sequence.