Antenna Structure With Switched Planar Metal Radiators
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Solution Overview
Problem
Conventional antennas lack radiation pattern switching functions, limiting their performance in various environments and hindering high-speed data transmission and reception in commercial mobile communication systems.
Innovation Solution
An antenna structure comprising a substrate with a horizontal radiator and a vertical radiator, featuring planar metal structures electrically connected through a vertical conductor and switches, allowing for selective current distribution and radiation pattern control via switches and a metal branch for adaptive performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional antenna structure is used, then the structure is simple and easy to manufacture, but the radiation pattern cannot be switched, limiting performance in various environments
Solution Approach 1:
The antenna structure is divided into multiple planar metal structures (first, second, third, and fourth planar metal structures) that can be independently controlled through switches. Each planar metal structure can be selectively connected or disconnected from the feeding terminal, allowing different radiation patterns to be achieved by activating different combinations of these segmented elements.
Solution Approach 2:
The antenna incorporates switches that enable dynamic reconfiguration of the planar metal structures. By controlling the switching states of these components, the radiation pattern can be dynamically changed to adapt to different communication environments, transforming a static antenna into a dynamically adjustable system.
2Adaptability or versatility
If the antenna structure includes multiple planar metal structures and switches for radiation pattern switching, then radiation pattern adaptability is improved, but the device complexity increases
Solution Approach 1:
Multiple planar metal structures are merged into a single integrated antenna system that shares common feeding terminals and substrate. The structures are arranged in a coordinated manner where they can be selectively activated through switching mechanisms, combining multiple radiation elements into one manufacturable unit while maintaining pattern switching capability.
3Productivity
If radiation pattern switching is implemented, then transmission and reception performance is improved, but the device complexity and control requirements increase
Solution Approach 1:
Different regions of the antenna (different planar metal structures) are designed with specific local characteristics that, when activated, produce desired radiation patterns. Each planar metal structure has a specific spatial orientation and configuration that contributes to the overall radiation characteristics, allowing localized control of the radiation properties.
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
Enables high transmission and reception performance by dynamically switching radiation patterns based on the surrounding environment, enhancing antenna gain and directivity.
Implementation Method 1
an antenna structure which includes a substrate, a horizontal radiator and a vertical radiator... achieving high transmission and reception performances under various environments
Data Source
AI summary
An antenna structure is provided, which includes a substrate, a horizontal radiator and a vertical radiator. The horizontal radiator is on or in the substrate. The vertical radiator is in the substrate and includes a vertical conductor, planar metal structures and a switch. The planar metal structures are electrically connected through the vertical conductor. The switch is in a gap of the planar metal structures and is coupled to at least one of the planar metal structures for switching a current distribution of the vertical radiator.