Vehicle Antenna Test Setup With Switchable Reflecting Plate
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Solution Overview
Problem
Existing test systems for vehicle-mounted antennas cannot conveniently switch between full anechoic chamber tests and semi-anechoic chamber tests due to fixed test coordinate systems and the difficulty in adjusting the position of measuring antennas, leading to high costs and labor for separate setups.
Innovation Solution
A test system incorporating an anechoic chamber, lifting table, measuring antenna, and a detachable or retractable reflecting plate that allows for both full and semi-anechoic chamber tests by adjusting the reflecting plate's connection to the lifting table, enabling flexible switching between test environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed test coordinate system is used for full anechoic chamber tests, then the test environment provides complete electromagnetic shielding, but the system cannot be easily reconfigured for semi-anechoic chamber tests
Solution Approach 1:
The test coordinate system is made dynamically adjustable through a movable support structure that can change the position of the measuring antenna and reflecting plate. The support structure allows the system to adapt between full anechoic chamber configuration (with complete shielding) and semi-anechoic chamber configuration (with partial shielding), resolving the contradiction between reliable electromagnetic shielding and test environment flexibility.
2Stability of the object's composition
If measuring antennas are fixed in position, then the test setup is stable, but adjusting antenna position for different test types requires high cost and labor
Solution Approach 1:
The measuring antenna is mounted on a movable support structure that enables easy repositioning between different test configurations. This dynamic positioning system allows the antenna to be adjusted for full anechoic chamber tests, semi-anechoic chamber tests, and near-field tests without requiring expensive and labor-intensive reconfiguration, while maintaining stable positioning during each specific test type.
3Object-affected harmful factors
If complete absorbing material coverage is used for full anechoic chamber tests, then electromagnetic wave reflection is minimized, but the system cannot simulate ground reflection for semi-anechoic chamber tests
Solution Approach 1:
The reflecting plate is made movable and can be positioned in different locations within the anechoic chamber. For full anechoic chamber tests, the reflecting plate is retracted or positioned away from the test area, allowing complete absorbing material coverage to minimize electromagnetic wave reflection. For semi-anechoic chamber tests, the reflecting plate is extended to the appropriate position to simulate ground reflection, demonstrating the dynamic adaptability of the system.
4Measurement precision
If the test system is designed for one specific test type, then the test precision is optimized, but multiple separate systems are needed for different test types
Solution Approach 1:
The test system is designed as a universal platform that can perform multiple test types including full anechoic chamber tests, semi-anechoic chamber tests, and near-field tests. The movable support structure, adjustable measuring antenna, and reconfigurable reflecting plate enable a single system to maintain optimized measurement precision for different test types while eliminating the need for multiple separate test systems, thereby reducing overall device complexity.
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
The system provides a cost-effective solution that can adapt to multiple test requirements by seamlessly transitioning between full and semi-anechoic chamber tests, enhancing flexibility and reducing the need for multiple setups.
Implementation Method 1
the reflecting plate is configured to reflect electromagnetic waves
Implementation Method 2
the absorbing material 112 is fully covered on an inner wall of the shielding body 111 for absorbing incident electromagnetic waves
Data Source
AI summary
A test system for a vehicle-mounted antenna. In the test system, when a bearing face is connected to a reflecting plate or when the reflecting plate extends from the bearing face, the testing system for a vehicle-mounted antenna can be used for a semi-anechoic chamber test; and when the bearing face is not connected to the reflecting plate or when the reflecting plate is retracted into the bearing face, the test system for a vehicle-mounted antenna can be used for a fully anechoic chamber test. That is to say, the test system for a vehicle-mounted antenna not only has the fully anechoic chamber testing function, but also has the semi-anechoic chamber testing function, and the two functions can be conveniently switched by means of the mounting/removal or extension/retraction of the reflecting plate.