Shared-Filter Antenna Layout for Low-Interference Signal Distribution
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Solution Overview
Problem
Existing antenna devices with integrated radiation conductors and filter circuits face complexity due to individually provided filter circuits for each conductor, leading to increased signal terminals and control complexity, necessitating a method to share a single filter circuit among multiple radiation conductors.
Innovation Solution
An antenna device configuration featuring a filter layer with a first filter circuit, an antenna layer with two radiation conductors, a divider layer for signal distribution, and ground patterns to reduce mutual interference, allowing a single filter circuit to be shared among multiple radiation conductors, with ground pillars and patterns optimizing signal distribution and reducing current flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filter circuits are individually provided for each radiation conductor, then filtering performance is improved, but device complexity and signal terminal count increase
Solution Approach 1:
Multiple filter circuits are merged into a single integrated filter circuit that serves all radiation conductors. The filter circuit includes multiple filtering sections that can be selectively connected to different radiation conductors, reducing the total number of signal terminals while maintaining filtering functionality.
Solution Approach 2:
The single filter circuit is designed with multi-functionality to serve multiple radiation conductors. It includes a plurality of filtering sections that can be selectively activated, allowing the same filter circuit to perform filtering operations for different radiation conductors based on operational requirements.
2Object-affected harmful factors
If ground patterns have large overlapping areas, then shielding effectiveness is improved, but mutual interference between radiation conductors increases
Solution Approach 1:
The ground pattern is designed with spatially varying properties. In regions where radiation conductors are present, the ground pattern has reduced overlapping area to minimize mutual interference. In regions away from radiation conductors, the ground pattern maintains larger overlapping areas to provide effective shielding. This local differentiation optimizes both shielding and interference reduction.
Data Source
AI summary
Disclosed herein is an antenna device that includes a filter layer, an antenna layer, a divider layer, and ground patterns. The antenna layer has first and second radiation conductors and first and second ground pillars that surround the first and second radiation conductors, respectively. Each of the first and second ground patterns has a first area that overlaps a first space surrounded by the first ground pillars, a second area that overlaps a second space surrounded by the plurality of second ground pillars, and a third area that connects the first and second areas. A width of the third area in a width direction perpendicular to an arrangement direction of the first and second areas is smaller than a width of each of the first and second areas in the width direction.