Separate Radar Transmission Reception Modules for Flexible Mounting
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Solution Overview
Problem
Conventional radar devices with integrated high frequency modules are limited in size and can only be mounted at specific locations on automobiles, such as the front grille or bumper, restricting their placement options.
Innovation Solution
The radar device is designed with separate transmission and reception modules, each comprising a substrate and circuit board with antennas and circuit units, allowing for flexible mounting on various parts of the automobile by separating the signal generation and reception functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the high frequency package, transmission antenna, and reception antenna are formed as a single integrated structure, then the module structure is simplified and manufacturing is easier, but the size of the module cannot be reduced and mounting locations are limited
Solution Approach 1:
The patent divides the integrated high frequency module into separate components: the high frequency package (containing circuit boards and circuit units) and the antenna units (transmission and reception antennas). These segmented components can be mounted independently at different locations on the automobile, providing mounting flexibility while maintaining manufacturing simplicity through modular assembly.
2Volume of moving object
If the transmission antenna and reception antenna are integrated in the same module, then the structure is compact, but the device can only be mounted at limited locations such as front grille or bumper
Solution Approach 1:
The patent segments the antenna system into separate transmission antenna units and reception antenna units that can be distributed at different locations on the vehicle. This segmentation allows each antenna unit to be optimally positioned for its specific function while maintaining a compact overall system architecture through the use of integrated circuit boards.
Solution Approach 2:
The patent utilizes three-dimensional spatial distribution by mounting the high frequency package and antenna units at different locations and orientations on the automobile. This dimensional approach allows the system to achieve both compactness and mounting flexibility by exploiting spatial relationships rather than relying solely on planar integration.
3Device complexity
If the circuit board is disposed on the substrate with antennas, then the structure is simplified, but signal loss increases due to interference between circuit units and antennas
Solution Approach 1:
The patent applies local quality by creating signal shielding structures specifically at locations where circuit boards are disposed near antennas. The shielding structures are selectively positioned to protect sensitive circuit units from electromagnetic interference generated by adjacent antennas, reducing signal loss without requiring complete separation of all components.
Solution Approach 2:
The patent introduces shielding structures as intermediary elements between the circuit boards and antennas. These shielding structures act as mediators that block or redirect electromagnetic interference from reaching the circuit units, thereby reducing signal loss while maintaining the simplified integrated structure.
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 enables the radar device to be mounted at any location on the automobile, improving its versatility and reducing signal loss by optimizing the placement of antennas and circuit units.
Implementation Method 1
a transmission antenna to emit the radar signal into a space
Implementation Method 2
a reception antenna to receive the reflected wave of the radar signal from a target object
Data Source
AI summary
A radar device includes a transmission module and a reception module disposed separately from the transmission module. The transmission module includes: a transmission circuit unit mounted on the first surface of a circuit board; an antenna substrate provided on the second surface side of the circuit board; and a transmission antenna mounted on the second surface of the antenna substrate and not provided in a range on the back surface side of the antenna substrate corresponding to the range in which the circuit board is disposed. The reception module includes: a reception circuit unit mounted on the third surface of a circuit board; an antenna substrate provided on the fourth surface side of the circuit board; and a reception antenna mounted on the fourth surface of the antenna substrate and not provided in a range on the back surface side of the antenna substrate corresponding to the range in which the circuit board is disposed.