Antenna Module With Coupler Pattern For Signal Power Detection
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Solution Overview
Problem
Existing antenna modules face difficulties in detecting the power of antenna signals due to interference between the antenna and circuit layers, requiring complex configurations and power feeding lines.
Innovation Solution
The antenna module incorporates a coupler pattern electromagnetically coupled to the radiation conductor and feed patterns, eliminating the need for power feeding lines and simplifying the antenna layer configuration, while allowing accurate detection of antenna signal power through strategically placed slots in the ground patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a power feeding line is provided in the antenna layer to detect antenna signal power, then power detection is enabled, but the configuration of the antenna layer becomes complex and mutual interference with the circuit layer increases
Solution Approach 1:
The invention moves the power detection function from the antenna layer to the circuit layer by stacking the circuit layer on the antenna layer with a ground pattern interposed. The feed pattern in the circuit layer is electromagnetically coupled to the radiation conductor through a slot in the ground pattern, enabling power detection without adding elements to the antenna layer.
Solution Approach 2:
The ground pattern with a slot acts as an intermediary between the radiation conductor in the antenna layer and the feed pattern in the circuit layer. This slot enables electromagnetic coupling for power detection while maintaining layer separation and preventing direct interference between the antenna and circuit layers.
2Device complexity
If the antenna layer and circuit layer are integrated without a ground pattern, then the configuration is simplified, but mutual interference between the antenna layer and circuit layer occurs
Solution Approach 1:
The invention segments the antenna module into distinct layers (antenna layer and circuit layer) with a ground pattern interposed between them. This segmentation physically separates the antenna function from the circuit function, preventing mutual interference while maintaining a compact integrated structure.
Solution Approach 2:
The invention resolves the interference issue by stacking the circuit layer on the antenna layer in the vertical dimension, with a ground pattern providing electromagnetic isolation. This three-dimensional arrangement eliminates planar interference while maintaining integration.
3Measurement precision
If slots are added to the ground pattern for electromagnetic coupling, then power detection and feed coupling are enabled, but the ground pattern becomes more complex
Solution Approach 1:
The ground pattern with slots serves multiple functions: it provides electromagnetic isolation between layers, enables power feeding through the slot, and facilitates power detection through electromagnetic coupling. This multi-functionality reduces the need for separate 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 enables efficient detection of antenna signal power, simplifies the antenna layer design, and supports dual polarization signals, enhancing antenna efficiency and bandwidth.
Implementation Method 1
a first feed pattern electromagnetically coupled to the radiation conductor through the first slot
Implementation Method 2
a first coupler pattern electromagnetically coupled to the first feed pattern or radiation conductor
Data Source
AI summary
Disclosed herein is an antenna device that includes an antenna layer having a radiation conductor, a first ground pattern having a first slot, a feed layer stacked on the antenna layer through the first ground pattern and having a first feed pattern electromagnetically coupled to the radiation conductor through the first slot, and a first coupler pattern electromagnetically coupled to the first feed pattern or radiation conductor.