3D Antenna Device With Elevated Substrate Structure
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Solution Overview
Problem
Conventional antennas face challenges with radiation efficiency at higher frequencies due to dielectric losses and surface wave losses, and at lower frequencies, they become impractically large and unstable, while also having a restricted bandwidth.
Innovation Solution
A three-dimensional antenna device with a substrate and a three-dimensional shape structure that protrudes from the substrate plane, allowing the antenna structure to be spaced apart and supported, increasing stability and bandwidth by using a patch antenna configuration with a high-frequency circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If planar antennas are arranged directly on a substrate, then manufacturing is simple, but radiation efficiency suffers severely from dielectric losses and surface wave losses at higher frequencies
Solution Approach 1:
The patent transitions from a two-dimensional planar antenna configuration to a three-dimensional structure by introducing a support element that elevates the antenna above the substrate plane. This dimensional change allows the antenna to be spatially separated from the substrate, reducing dielectric losses and surface wave losses while maintaining manufacturing feasibility through integrated support structures.
2Loss of energy
If three-dimensional antennas are used to improve radiation efficiency, then efficiency improves, but the antenna length becomes very large and unstable at lower frequencies
Solution Approach 1:
The patent introduces a support element as an intermediary between the antenna and the substrate. This support element provides mechanical stability and structural support for the elevated antenna structure, enabling the antenna to maintain its three-dimensional configuration without becoming unstable, while also providing electrical isolation to reduce losses.
3Volume of moving object
If antenna dimensions are reduced for higher frequencies, then size decreases, but the effective useful bandwidth is restricted to a narrow frequency band
Solution Approach 1:
The patent employs a three-dimensional antenna configuration with vertical elevation above the substrate, which increases the effective electrical height of the antenna. This dimensional change allows smaller physical dimensions while maintaining or enhancing bandwidth performance, as the increased electrical height provides greater frequency versatility without requiring larger planar dimensions.
4Loss of energy
If antenna structure is spaced apart from substrate to reduce losses, then radiation efficiency improves, but structural stability decreases
Solution Approach 1:
The support element serves as a mediator that simultaneously achieves two opposing goals: it maintains the spatial separation between the antenna and substrate to reduce dielectric and surface wave losses, while also providing the necessary mechanical support to ensure structural stability. The support element is designed to optimize both electrical isolation and mechanical reinforcement.
Data Source
AI summary
The invention relates to an antenna device having an antenna structure and an antenna feed line feeding the antenna structure, and a three-dimensional shape structure having at least one portion on which the antenna structure is arranged. The antenna device additionally has a substrate extending in a substrate plane, the substrate having a first side and an opposite second side, and the three-dimensional shape structure being arranged on the first side of the substrate. The at least one portion of the three-dimensional shape structure protrudes from the substrate plane and is spaced apart from the substrate in a contactless manner so that the antenna structure arranged thereon is also spaced apart from the substrate spatially and in a contactless manner.