Radar Antenna Wireless LAN Integration for Portability
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Solution Overview
Problem
Conventional radar apparatuses with wired connections between aerial and indicator units limit portability and complicate handling, especially when displaying radar images on multiple units, and do not address the installation of non-GPS antennas in radar units.
Innovation Solution
A radar antenna configuration that includes a signal processor and a wireless LAN antenna with horizontal directivity, allowing wireless transmission of detection results to external devices without wiring, with the wireless LAN antenna fixed inside the radar case and oriented parallel to the front-and-rear directions for efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the aerial unit and indicator unit are connected by wired connection, then the radar apparatus achieves stable signal transmission, but the portability and ease of handling deteriorate
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless communication system. The indicator unit is equipped with a wireless LAN antenna that communicates with the aerial unit via wireless signals, eliminating the need for physical cables while maintaining data transmission functionality. This substitution resolves the contradiction by removing the mechanical constraint (wiring) that limited portability.
2Adaptability or versatility
If multiple display units are connected to the aerial unit, then the radar images can be displayed on multiple units, but the wiring work becomes complicated
Solution Approach 1:
The wireless LAN antenna in the indicator unit enables universal wireless communication capability. Instead of requiring separate wired connections for each display unit, the aerial unit can wirelessly communicate with multiple indicator units simultaneously through the wireless LAN standard, simplifying the system architecture while maintaining multi-display functionality.
3Reliability
If the wireless LAN antenna is disposed in the radar apparatus at a high position, then the radio wave transmission is less interrupted by obstacles, but the antenna orientation becomes more difficult
Solution Approach 1:
The patent employs an asymmetric mounting structure where the wireless LAN antenna is integrated into the indicator unit rather than the aerial unit. This allows the antenna to be positioned at various locations depending on the indicator unit's placement, making installation more flexible and easier while still achieving good radio wave propagation by positioning the indicator unit at appropriate heights.
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
Enables easy installation and stable wireless communication of radar detection results, even in high positions, without the need for wiring, and provides a sufficient communicable range for long, movable bodies like ships or aircraft.
Implementation Method 1
a wireless LAN antenna fixed inside the radar case, having a horizontal directivity, and configured to transmit the reception signal processed by the signal processor to an external terminal device
Data Source
AI summary
A radar antenna is provided. The radar antenna includes a radar case having a front side and a rear side, a signal processor provided inside the radar case and configured to perform signal processing on a reception signal that is received by an EM radiator configured to transceive an electromagnetic wave, and a wireless LAN antenna fixed inside the radar case, having a horizontal directivity, and configured to transmit the reception signal processed by the signal processor to an external terminal device, the wireless LAN antenna being oriented such that a direction of the horizontal directivity of the wireless LAN antenna is in parallel to the front-and-rear directions of the radar case.