Multilayer Antenna System With Insulating Carrier Device
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Solution Overview
Problem
Conventional radar sensors face limitations in frequency bandwidth and manufacturing complexity, particularly in the 76 GHz to 81 GHz range, due to the use of high-frequency substrates and multilayer assemblies.
Innovation Solution
The antenna system employs a carrier device with electrical insulation material, such as thermosetting plastic, to mount additional antenna structures separately from the classical high-frequency substrate, enabling a multilayer microstrip design with increased bandwidth while simplifying manufacturing and reducing error susceptibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multilayer substrate assemblies with etched structures are used to achieve extended frequency bandwidth (76 GHz to 81 GHz), then the frequency bandwidth is improved, but the device complexity and manufacturing effort increase significantly
Solution Approach 1:
The antenna system is divided into multiple independent antenna elements (first antenna element, second antenna element, third antenna element) that can be manufactured separately on different substrates and then assembled together. This segmentation allows each element to be optimized independently while achieving extended bandwidth through their combined operation, avoiding the need for complex multilayer substrate assemblies.
Solution Approach 2:
Multiple antenna elements with different frequency characteristics are combined in a single antenna system to achieve extended bandwidth. The first antenna element operates at a first frequency, the second at a second frequency, and the third at a third frequency, creating a broadband antenna system that covers 76 GHz to 81 GHz without requiring complex multilayer substrates.
2Device complexity
If conventional patch antennas on high-frequency substrates are used, then the antenna structure is simple, but the frequency bandwidth is limited
Solution Approach 1:
The antenna system dynamically switches between different antenna elements depending on the operating frequency. The control unit activates the appropriate antenna element (first, second, or third) based on the required frequency range, allowing the system to adapt to different bandwidth requirements while maintaining simple individual element designs.
Solution Approach 2:
Each antenna element is designed to be multi-functional, capable of operating at different frequency ranges. The first antenna element operates at a first frequency, the second at a second frequency, and the third at a third frequency, allowing a single antenna system to cover the entire 76 GHz to 81 GHz bandwidth without requiring complex individual elements.
3Ease of manufacture
If one-layer substrate assemblies are used, then the manufacturing process is simplified, but the possible frequency bandwidth is limited
Solution Approach 1:
The bandwidth extension is achieved by segmenting the antenna system into multiple independent elements manufactured on separate one-layer substrates, rather than attempting to achieve broadband performance with a single complex multilayer substrate. This maintains manufacturing simplicity while extending frequency coverage.
Solution Approach 2:
Instead of extending bandwidth within a single substrate layer (horizontal dimension), the solution moves to the vertical dimension by stacking multiple antenna elements at different positions and orientations. The first, second, and third antenna elements are arranged in space to provide frequency diversity, achieving broadband performance through spatial arrangement rather than substrate complexity.
Data Source
AI summary
An antenna system and a method for manufacturing same. The antenna system includes a substrate having a first outer side on which a first antenna structure is mounted; a radome spaced apart from the substrate on the first outer side of the substrate; a carrier device situated between the substrate and the radome which includes an insulating material; and at least one second antenna structure mounted on the carrier device which is spaced apart from the substrate and the radome.