Antenna Mounting Structure for Phase-Cancelled Base Radiation
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Solution Overview
Problem
Existing antenna systems using zeroth-order resonance experience unnecessary radiation in directions perpendicular to the ground plate due to electromagnetic coupling with conductive bases, which interferes with signal strength and efficiency.
Innovation Solution
The antenna mounting system includes a ground plate, an opposing conductive plate, and a short-circuit pin positioned to adjust the polarization and phase of radiated waves, ensuring a phase difference of 90 to 270 degrees with the conductive base, thereby reducing unnecessary radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna device is mounted on a conductive base plate, then the antenna device can be supported and electrically connected, but unnecessary radiation occurs in directions perpendicular to the ground plate due to electromagnetic coupling
Solution Approach 1:
The patent utilizes the electromagnetic coupling between the antenna device and conductive base plate, which originally causes harmful radiation, to create a beneficial effect. By carefully designing the coupling characteristics and positioning, the system converts the harmful electromagnetic interaction into a useful signal reinforcement mechanism, where the base plate acts as an additional radiating element that enhances rather than degrades antenna performance
Solution Approach 2:
The patent employs parameter optimization to control the electromagnetic coupling characteristics. By adjusting parameters such as the distance between the antenna device and base plate, the size and shape of the base plate, and the electrical properties of mounting structures, the system achieves optimal coupling that minimizes harmful radiation while maintaining mounting stability and signal quality
2Volume of moving object
If the antenna device is positioned close to the conductive base plate for compact mounting, then space efficiency is improved, but electromagnetic coupling increases causing signal interference
Solution Approach 1:
The patent optimizes the spacing parameter between the antenna device and conductive base plate to achieve a balance between compactness and electromagnetic interference reduction. By carefully selecting this distance parameter, the system maintains a compact form factor while controlling the strength of electromagnetic coupling to prevent harmful interference
Solution Approach 2:
The patent introduces intermediary elements such as dielectric materials or mounting structures between the antenna device and conductive base plate. These intermediaries serve as mediators that control the electromagnetic coupling, allowing the system to maintain compact dimensions while reducing direct electromagnetic interaction that causes interference
3Productivity
If the ground plate size is increased to improve radiation characteristics, then radiation efficiency is improved, but the device complexity and mounting difficulty increase
Solution Approach 1:
The patent merges the ground plate function with the mounting base plate, combining two previously separate components into a single integrated structure. This integration maintains the radiation efficiency benefits of a large ground plate while simplifying the mounting structure and reducing overall device complexity
Solution Approach 2:
The conductive base plate is designed to serve multiple functions simultaneously: it provides mechanical support for mounting the antenna device, establishes electrical ground connections, and acts as a radiating element to enhance radiation characteristics. This multi-functionality eliminates the need for separate large ground plates, reducing mounting complexity
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 minimizes unnecessary radiation by aligning the polarization and phase of radiated waves, resulting in lower signal strength of composite waves and reduced interference.
Implementation Method 1
a radio wave radiated from the antenna device in a direction perpendicular to the ground plate
Implementation Method 2
unnecessary radiation in directions perpendicular to the ground plate due to electromagnetic coupling with conductive bases
Implementation Method 3
is shifted in phase from the radio wave radiated from the conductive base plate by a phase difference within a range from 90 degrees to 270 degrees
Data Source
AI summary
An antenna mounting system includes an antenna device and a conductive base plate. The antenna device includes a ground plate, an opposing conductive plate, and a short-circuit pin. The short-circuit pin is positioned to cause a radio wave radiated from the antenna device in a direction perpendicular to the ground plate such that radio wave: has a polarization component that oscillates in a direction parallel to a main plane of polarization of a radio wave radiated from the conductive base plate in the direction perpendicular to the ground plate; and is shifted in phase from the radio wave radiated from the conductive base plate by a phase difference within a range from 90 degrees to 270 degrees.