Multilayer Substrate Floating Conductors Antenna Directivity
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Solution Overview
Problem
In antenna devices with multiple patch antennas, there is a need to improve the directivity of each antenna to enhance performance.
Innovation Solution
The electronic device and multilayer substrate incorporate a multilayer body with stacked insulator layers, featuring multiple radiation conductor layers and floating conductors that are not electrically connected to other conductors. These floating conductors surround the radiation conductor layers, forming waveguides that improve directivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple patch antennas are arranged in a compact space, then the device size is reduced, but the directivity of each antenna deteriorates
Solution Approach 1:
The patent transitions from a planar two-dimensional antenna arrangement to a three-dimensional stacked configuration. Multiple radiation conductor layers are positioned at different heights (Z-axis) within the multilayer substrate, with floating conductors providing vertical shielding. This spatial dimensionality change allows compact integration while preserving directivity through three-dimensional electromagnetic field control.
Solution Approach 2:
The patent implements a nested structure where floating conductors are positioned between radiation conductor layers, creating concentric shielding configurations. The first floating conductor surrounds the first radiation conductor layer, while the second floating conductor surrounds the second radiation conductor layer, forming nested protective structures that maintain directivity in the compact multilayer assembly.
2Measurement precision
If floating conductors are added to improve directivity, then antenna performance is enhanced, but the device complexity increases
Solution Approach 1:
The patent integrates floating conductors directly into the multilayer substrate structure, combining the shielding function with the existing antenna layers. The floating conductors are positioned between radiation conductor layers and share the same substrate platform, merging multiple functions (radiation, shielding, support) into a unified integrated structure rather than adding separate discrete components.
Solution Approach 2:
The floating conductors serve multiple functions simultaneously: they act as electromagnetic shields to improve directivity, provide structural support within the multilayer substrate, and define the geometric configuration of the antenna elements. This multi-functionality reduces the need for additional dedicated components, thereby limiting the increase in overall device 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
The configuration effectively enhances the directivity of each radiation conductor layer, improving the antenna's ability to radiate and receive signals while maintaining a compact device size.
Implementation Method 1
The metal ring and the cushion member form a waveguide. Such a configuration improves the directivity of the patch antenna.
Data Source
AI summary
A first radiation conductor layer is provided in a multilayer body. A second radiation conductor layer is provided in or on the multilayer body, is located above the first radiation conductor layer, and overlaps the first radiation conductor layer when viewed in an up-down direction. A first floating conductor has a shape surrounding at least a part of a periphery of the first radiation conductor layer when viewed in the up-down direction, is located on a same layer as or above the first radiation conductor layer and on a same layer as or below the second radiation conductor layer in the up-down direction, and is not electrically connected to any conductor present in or on the multilayer body. A second floating conductor has a shape surrounding at least a part of a periphery of the second radiation conductor layer.