Polyhedral Antenna Shield Layer Joint Design
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Solution Overview
Problem
In antenna devices with a hexahedral housing, radio waves entering through discontinuous joints between surfaces can cause adverse effects on transmission and reception, leading to diffused waves that interfere with antenna elements on other surfaces.
Innovation Solution
The antenna device features laminated substrates with antenna conductors, insulating layers, and a shield layer, along with a frame body that fixes and conducts edge portions of adjacent substrates, using a joining member with an intersecting two-surface portion to connect the shield layer and prevent radio wave entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If antenna elements are arranged on multiple surfaces of a hexahedral housing, then the antenna device can transmit and receive radio waves from multiple directions, but radio waves can enter through discontinuous joints between surfaces and cause interference to antenna elements on other surfaces
Solution Approach 1:
A shield layer is introduced as an intermediary between the antenna elements on different surfaces and the joints between housing surfaces. This shield layer, made of conductive material, blocks radio waves from entering through the joints and prevents interference between antenna elements, while allowing the multi-surface antenna configuration to maintain its multi-directional capability
Solution Approach 2:
The shield layer is positioned in advance at the joints between housing surfaces to prevent radio waves from entering and causing interference. By placing the shielding structure before the interference problem occurs, the design proactively blocks the harmful radio wave paths while preserving the functional arrangement of antenna elements
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 effectively prevents radio wave interference by ensuring continuous shielding at joints, allowing for accurate measurement of wave direction and reducing adverse effects on antenna elements.
Implementation Method 1
a shield layer that conducts with the ground conductor; and a frame body that has conductivity, fixes edge portions along sides of adjacent surface members inside the polyhedron, and has a joining member having an intersecting two-surface portion that conducts with the shield layer
Implementation Method 2
a frame body that has conductivity, fixes edge portions along sides of adjacent surface members inside the polyhedron, and has a joining member having an intersecting two-surface portion that conducts with the shield layer
Data Source
AI summary
An antenna device having a shape of a polyhedron, includes a plurality of surface members that form surfaces of the polyhedron, and each of which having at least an antenna conductor, an insulating layer, and a shield layer are laminated from an upper layer side, and a frame body that has conductivity, fixes edge portions along sides of adjacent surface members inside the polyhedron, and has a joining member having an intersecting two-surface portion that conducts with the shield layer.