Waveguide Antenna Layout for Multi-Directional ADAS Sensing
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Solution Overview
Problem
Existing antenna devices for advanced driver-assistance systems (ADAS) and autonomous driving have limitations in monitoring a vehicle in all directions due to their inability to transmit and receive signals in multiple directions simultaneously, resulting in blind zones.
Innovation Solution
A waveguide antenna device is designed with a first circuit board and a first waveguide that includes a separating pipe to guide transmission signals in both the first and second directions, and a receiving pipe to direct reflection signals to the integrated circuit, enabling simultaneous signal transmission and reception in different directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional antenna device uses multiple antennas disposed in specific directions, then it can obtain high resolution for detecting objects, but it can transmit and receive signals only in those specific directions, resulting in blind zones
Solution Approach 1:
The waveguide is divided into multiple separating pipes (first separating pipe, second separating pipe, etc.), each configured to guide transmission signals in different directions. This segmentation allows the single antenna device to transmit signals in multiple directions simultaneously, eliminating blind zones while maintaining detection resolution through the structured division of signal paths
Solution Approach 2:
The antenna device is designed with waveguides that can simultaneously perform multiple functions: transmitting signals in different directions through separating pipes and receiving reflection signals through receiving pipes. This multi-functionality enables the device to monitor all directions (360°) around the vehicle, making it universally applicable for comprehensive environmental sensing without requiring multiple separate antennas
2Adaptability or versatility
If multiple antennas are disposed to achieve 360° monitoring, then all directions can be covered, but the device complexity increases
Solution Approach 1:
Multiple antenna functions are merged into a single integrated antenna device. The waveguide structure combines multiple separating pipes and receiving pipes into one unified component that can transmit and receive signals in multiple directions simultaneously. This merging reduces device complexity by eliminating the need for multiple separate antennas while achieving 360-degree monitoring capability
Solution Approach 2:
The waveguide structure utilizes three-dimensional spatial arrangement with separating pipes extending in different directions (first direction, second direction, third direction perpendicular to both). This dimensional approach allows the device to achieve 360-degree coverage by guiding signals through multiple spatial paths from a single integrated structure, avoiding the complexity of multiple discrete antenna elements
3Adaptability or versatility
If a single antenna transmits signals in multiple directions simultaneously, then blind zones are eliminated, but the device structure becomes more complex
Solution Approach 1:
The waveguide is segmented into multiple functional pipes (separating pipes for different transmission directions, receiving pipes for reflection signals). Each segment is optimized for a specific function, but together they form an integrated structure that achieves multi-directional signal transmission without requiring multiple separate antenna devices
Solution Approach 2:
The waveguide acts as an intermediary structure that enables a single antenna to transmit signals in multiple directions. The separating pipes serve as intermediate channels that guide the transmission signal from the antenna to different directions, while receiving pipes guide reflection signals back to the antenna, simplifying the overall device structure compared to using multiple independent antennas
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 allows for enhanced monitoring capabilities, eliminating blind zones and providing double the resolution compared to conventional antennas with the same number of integrated circuits, enabling effective 360-degree vehicle monitoring.
Implementation Method 1
a first waveguide disposed on the first circuit board and configured to guide the first transmission signal and the first reflection signal
Implementation Method 2
the first waveguide includes a first separating pipe configured to guide the first transmission signal in a first direction and in a second direction different from the first direction
Implementation Method 3
a first receiving pipe configured to guide the first reflection signal received in the first direction to the first integrated circuit
Data Source
Figure 1~2A
Figure 2B~3A
Figure 3B~4
AI summary
The waveguide antenna device includes a first circuit board including a first integrated circuit configured to output a first transmission signal and receive a first reflection signal; and a first waveguide disposed on the first circuit board and configured to guide the first transmission signal and the first reflection signal. The first waveguide includes a first separating pipe configured to guide the first transmission signal in a first direction and in a second direction different from the first direction and a first receiving pipe configured to guide the first reflection signal received in the first direction to the first integrated circuit.