Patterned Antenna Cavity Layout for Higher Gain in Compact Modules
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Solution Overview
Problem
Existing antenna devices in communication apparatuses require large-sized cavities to achieve greater antenna gain and signal quality, which increases the size of the antenna module and compromises compactness.
Innovation Solution
The antenna device features a patterned radiating layer and a wall structure with a unique configuration, where the wall structure's upper surface is lower than the radiating layer, forming a smaller-sized cavity that surrounds the radiating layers, enhancing equivalent capacitance and antenna gain without increasing the module's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large-sized cavity is provided in the antenna device to achieve greater antenna gain and better signal quality, then the antenna gain is improved, but the size of the antenna module is significantly increased, deteriorating compactness
Solution Approach 1:
The wall structure is positioned within the projection area of the patterned radiating layer, creating a nested configuration where the cavity-forming wall is contained within the radiating layer's footprint. This nesting allows the cavity to be formed without increasing the overall antenna module size, as the wall structure occupies space that would otherwise be part of the radiating layer's projection area.
Solution Approach 2:
The invention transitions from a planar two-dimensional radiating layer to a three-dimensional structure by introducing a wall structure with height dimension. The wall structure extends vertically from the ground plate upward, creating a cavity volume without expanding the horizontal footprint beyond the radiating layer's projection area. This dimensional transition enables compact cavity integration.
2Reliability
If a cavity is formed between the radiating plates and ground plate to improve antenna performance, then the antenna gain is enhanced, but the structural complexity increases
Solution Approach 1:
The wall structure is positioned locally within the projection area of the patterned radiating layer, creating a localized cavity region rather than requiring a comprehensive structural redesign. The wall structure's selective placement within specific zones of the radiating layer's projection area allows for targeted antenna performance enhancement without globally increasing structural 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 achieves a smaller antenna module size while providing a 1.2 dB-1.5 dB greater antenna gain compared to traditional designs, maintaining compactness while improving signal quality.
Implementation Method 1
enhancing equivalent capacitance and antenna gain
Data Source
AI summary
An antenna device is provided, which includes a ground plate, a patterned radiating layer and a wall structure. The patterned radiating layer is arranged above the ground plate. The wall structure is formed above the ground plate. On a first reference plane substantially parallel with the ground plate, a projection of the wall structure overlaps a projection of the patterned radiating layer. With respect to a first reference axis substantially perpendicular to the ground plate, an upper surface of the wall structure is lower than the patterned radiating layer.