Divider-Layer Antenna Layout for Shared Filter Signal Routing
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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 with a filter layer, an antenna layer, and a divider layer, where the divider layer distributes the antenna signal from a single filter circuit to multiple radiation conductors, utilizing ground patterns and feed conductors to reduce mutual interference and enhance independency between conductors, allowing for a phased-array configuration with reduced signal terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filter circuits are individually provided for each radiation conductor, then filtering performance for each conductor is improved, but the number of signal terminals increases and control complexity increases
Solution Approach 1:
The patent merges multiple filter circuits into a single shared filter circuit that serves multiple radiation conductors. The filter circuit is configured with multiple output terminals that can be selectively connected to different radiation conductors, eliminating the need for individually provided filter circuits for each conductor while maintaining filtering performance.
Solution Approach 2:
The shared filter circuit is designed with multi-functionality to serve multiple radiation conductors. It includes multiple output terminals and switching mechanisms that allow the same filter circuit to be dynamically allocated to different radiation conductors based on operational requirements, making a single circuit perform the function of multiple circuits.
2Object-affected harmful factors
If ground patterns are provided between filter layer and divider layer and between divider layer and antenna layer, then mutual interference between radiation conductors is reduced, but the number of ground patterns and layers increases
Solution Approach 1:
Ground patterns are provided in specific local regions between layers rather than as comprehensive ground planes. The first ground pattern is positioned between the filter layer and divider layer, while the second ground pattern is positioned between the divider layer and antenna layer. This localized grounding approach reduces mutual interference in critical areas without requiring extensive ground structures throughout the entire device.
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.