Multilayer PCB Radar Layout for Antenna Separation and Shielding
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Solution Overview
Problem
Radar arrangements with electronic components and antennas on the same side of the printed circuit board face challenges in process separation and explosion protection, limiting the implementation of compact designs, especially when multiple antennas and components are used.
Innovation Solution
A printed circuit board design with four electrically conductive layers separated by three insulating layers, where the electronic component is on one outer layer and the antenna is formed in another, allowing for strict separation and compact designs by routing high-frequency signals through insulating and conductive layers, with optional stiffening and electromagnetic shielding for stability and interference reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If electronic components and antennas are arranged on the same side of the printed circuit board, then the high-frequency design is simplified and antenna structures are easier to implement, but process separation becomes difficult and explosion protection requirements cannot be met
Solution Approach 1:
The patent transitions from a two-dimensional planar arrangement to a three-dimensional multilayer structure. Electronic components are placed on the first outer layer while antennas are formed on the second outer layer, separated by inner conductive and insulating layers. This vertical dimensionality change enables both simplified high-frequency design and adequate process separation/explosion protection.
Solution Approach 2:
The printed circuit board is segmented into multiple functional layers: first outer layer for electronic components, inner layers for signal transmission, and second outer layer for antennas. This segmentation allows independent optimization of each layer's function while maintaining overall system integration.
2Device complexity
If electronic components and antennas are arranged on the same side of the printed circuit board, then the antenna structure is simplified, but compact design with multiple antennas and components is limited
Solution Approach 1:
By utilizing the vertical space through multilayer construction, the patent accommodates multiple antennas and electronic components in a compact footprint. The separation of components and antennas into different layers enables denser integration without increasing the planar area, achieving both compactness and functional simplicity.
Solution Approach 2:
The patent implements a nested structure where antennas are formed in the second outer layer, surrounded by and integrated with the multilayer PCB structure. The inner conductive and insulating layers are nested between the component layer and antenna layer, creating a compact integrated assembly.
3Ease of manufacture
If electronic components and antennas are arranged on the same side of the printed circuit board, then the implementation is simpler, but interference between multiple antennas increases
Solution Approach 1:
The patent introduces inner conductive layers and insulating layers as intermediaries between the electronic component layer and antenna layer. These intermediate layers act as shielding and isolation barriers that reduce electromagnetic interference between multiple antennas while maintaining the simplicity of the overall implementation.
Solution Approach 2:
By segmenting the PCB into functionally distinct layers with proper shielding, the patent reduces mutual interference between antennas. Each antenna operates in its dedicated layer space, isolated by insulating and conductive shielding layers, thereby maintaining implementation simplicity while eliminating interference issues.
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 design achieves strict separation between the assembly and process sides, enabling compact and robust radar arrangements with improved mechanical stability and reduced interference between antennas, facilitating the use in various environments.
Implementation Method 1
the line structure radiates the high-frequency signal at an open-ended radiation region and impinges the antenna with the radiated high-frequency signal
Implementation Method 2
separated from one another by at least three electrically insulating layers
Data Source
AI summary
A radar arrangement includes a printed circuit board (PCB), an electronic component, and an antenna. The electronic component is arranged on the PCB and is used to generate a high-frequency signal. The PCB has at least four electrically conductive layers separated from one another by at least three electrically insulating layers. A first conductive inner layer is adjacent to a first conductive outer layer, and a second conductive inner layer is adjacent to a second conductive outer layer. The electronic component is arranged on the first conductive outer layer. The antenna is formed at least partially in the second outer layer. The signal generated by the electronic component is transmitted to the antenna, which is formed at least partially in the second conductive outer layer of the PCB, through a region of the conductive inner layers and insulating inner layers of the PCB.