Reflective Plane Antenna Layout for High Gain and Wide Beamwidth
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Solution Overview
Problem
Existing antennas in mobile devices often suffer from insufficient radiation gain, which negatively affects communication quality.
Innovation Solution
A novel antenna system design incorporating a signal feeding element, transmission lines, antenna elements, and a reflective plane, with specific branch and slot configurations, to enhance radiation gain and beamwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a small-size antenna structure is designed, then the device size is reduced, but the radiation gain becomes insufficient
Solution Approach 1:
The antenna structure is divided into multiple radiation elements (first radiation element with first and second branches, second radiation element with third and fourth branches) coupled to a feeding element through transmission lines. This segmentation allows each element to contribute to the overall radiation pattern, achieving high gain in a compact form factor by distributing the radiating function across multiple smaller components rather than requiring a single large antenna.
Solution Approach 2:
The patent employs a three-dimensional configuration with radiation elements arranged in specific spatial relationships (e.g., orthogonal orientations, different heights above the ground plane) to achieve high radiation gain. By utilizing vertical and horizontal dimensions simultaneously, the antenna achieves enhanced gain without increasing the planar footprint, effectively transitioning from a two-dimensional to three-dimensional space utilization.
2Ease of manufacture
If the antenna structure is simplified, then the manufacturing process becomes easier, but the beamwidth and radiation performance deteriorate
Solution Approach 1:
The patent combines multiple functional elements into a unified antenna structure: the feeding element, transmission lines, and radiation elements are integrated into a single compact assembly. The first and second radiation elements are positioned and coupled to work together, creating a unified radiating system that achieves the desired beamwidth and gain characteristics while maintaining manufacturing simplicity through consolidation rather than separate components.
Solution Approach 2:
The patent achieves wide beamwidth and high gain by carefully controlling geometric parameters of the radiation elements, such as the lengths of the branches (e.g., L1, L2, L3, L4), the spacing between elements, and the positioning relative to the ground plane. By optimizing these dimensional parameters, the antenna achieves superior radiation performance without requiring complex structures, allowing standard manufacturing processes to be used.
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 design achieves high radiation gain and large beamwidth, supporting wideband operations and improving communication performance in mobile devices.
Implementation Method 1
The reflective plane is adjacent to the first antenna element and the second antenna element
Data Source
AI summary
An antenna system includes a signal feeding element, a first transmission line, a second transmission line, a first antenna element, a second antenna element, and a reflective plane. The first antenna element includes a first radiation element and a second radiation element. The second antenna element includes a third radiation element and a fourth radiation element. Each of the first radiation element, the second radiation element, the third radiation element, and the fourth radiation element includes a main branch, a first branch, and a second branch. The main branch has a first end and a second end. The first branch is coupled to the first end of the main branch. The second branch is coupled to the second end of the main branch. A slot region is surrounded by the main branch, the first branch, and the second branch.