Horizontally Polarized Dipole Antenna With Concave Ground Plate Reflection
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Solution Overview
Problem
Horizontally polarized dipole antennas have poor beam transmission performance due to inadequate reflection effects from the ground plate, failing to meet high directional radiation requirements.
Innovation Solution
The design includes a substrate with a ground plate that has a concave side edge, spacing it from the antenna branches and using a differential feeding structure to enhance reflection and radiation, allowing for improved beam transmission and high directivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a ground plate is used as a reflector for a horizontally polarized dipole antenna, then the antenna structure is simple, but the reflection effect is poor and beam transmission performance is poor
Solution Approach 1:
The ground plate is designed with a concave side edge instead of a straight edge, creating a curved reflective surface. This concave configuration focuses and directs the reflected electromagnetic waves, significantly improving the reflection effect and beam transmission performance while maintaining the basic ground plate structure
Solution Approach 2:
The concave side edge is applied locally at the critical reflective region of the ground plate, where the electromagnetic wave reflection occurs. This localized structural modification optimizes the reflection effect precisely where it is most needed, without requiring complete redesign of the entire antenna structure
2Device complexity
If a conventional ground plate is used, then the antenna structure is simple, but high directional radiation requirement cannot be satisfied
Solution Approach 1:
The concave side edge of the ground plate creates a curved reflective surface that focuses electromagnetic radiation in a specific direction. This curvature geometry naturally directs the beam forward, achieving high directional radiation performance without adding complex directional control mechanisms to the antenna structure
3Reliability
If the ground plate is spaced apart from the antenna branches with a concave side edge, then reflection effect and beam transmission performance are enhanced, but the antenna structure becomes more complex
Solution Approach 1:
The concave side edge configuration modifies the ground plate geometry to create a focused reflective surface. This curved edge design enhances beam transmission and reflection effect by directing electromagnetic waves more effectively, while the overall structure remains a relatively simple modified ground plate without adding numerous complex components
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 significantly enhances the reflection effect and beam transmission performance of the horizontally polarized dipole antenna, enabling it to meet high directivity requirements and cover multiple frequency bands, including 5G millimeter-wave frequencies.
Implementation Method 1
a ground plate is generally used as a reflector of the horizontally polarized dipole antenna
Data Source
AI summary
An antenna element includes: a substrate with a ground plate, a horizontally polarized dipole antenna including a first antenna branch and a second antenna branch, and a first feeding structure. The first antenna branch and the second antenna branch are disposed in the substrate at intervals, the first antenna branch and the second antenna branch are disposed on a plane on which the ground plate is disposed, and the first antenna branch and the second antenna branch are electrically connected to the ground plate through the first feeding structure. The ground plate is spaced apart from both the first antenna branch and the second antenna branch, and a side edge of the ground plate that faces the first antenna branch and the second antenna branch is a concave side edge.