Wireless Shield Box With Probe Antennas For Non-Contact Testing
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Solution Overview
Problem
Existing wireless terminal test systems require complex and cumbersome wired connections for accurate testing, which is impractical for devices without wired ports and can lead to unreliable results due to standing waves and multi-path fading.
Innovation Solution
A shield box with probe antennas and electronic wave absorbers that allow for non-contact signal reception from wireless terminal antennas, eliminating the need for wired connections and ensuring reliable testing by absorbing electronic waves and preventing standing waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wired RF ports and RF cables are used to connect the wireless terminal with the test device, then measurement precision is improved, but device complexity and ease of operation deteriorate due to complex connection procedures
Solution Approach 1:
The patent replaces the mechanical wired connection system (RF cables and connectors) with an electromagnetic field-based wireless connection system. Probe antennas positioned above and below the terminal antennas enable signal transmission through the terminal body without physical contact, eliminating the need for mechanical assembly and disassembly of connectors while maintaining test accuracy.
Solution Approach 2:
The patent introduces probe antennas as intermediary elements that mediate the connection between the terminal antennas and test device. These probe antennas positioned above and below the terminal act as intermediaries to receive and transmit signals wirelessly through the terminal body, replacing the direct wired connection and simplifying the operation while preserving measurement precision.
2Reliability
If the wireless terminal is received in the shield box with wired connections, then reliability is improved, but ease of operation deteriorates due to cumbersome connection procedures
Solution Approach 1:
The patent replaces the mechanical wired connection system with an electromagnetic field-based wireless system using probe antennas positioned above and below the terminal. This substitution maintains test reliability by providing stable signal transmission while eliminating the need for manual connector assembly and disassembly, significantly simplifying the operation.
3Measurement precision
If electronic wave absorbers are attached to the inner surface of the metallic case, then measurement precision is improved by preventing standing waves, but device complexity increases
Solution Approach 1:
The patent extracts the electronic wave absorbers from the traditional position on the inner surface of the metallic case and relocates them to the outer surfaces of the terminal device itself. This extraction and relocation maintains the function of preventing standing waves and improving measurement precision while simplifying the shield box structure by eliminating the need for internal absorber installation.
4Measurement precision
If wired RF ports are used for connection, then measurement precision is improved, but adaptability deteriorates for devices without wired ports
Solution Approach 1:
The patent replaces the mechanical wired connection system with an electromagnetic field-based wireless system using probe antennas. This substitution enables the test system to work with any wireless terminal regardless of whether it has wired RF ports, significantly improving adaptability while maintaining measurement precision through non-contact signal transmission.
Solution Approach 2:
The patent creates a universal testing solution that can accommodate various types of wireless terminals (smartphones, tablets, wearables, IoT devices) with different connection interfaces. The wireless probe antenna system provides multi-functional capability to test both devices with traditional wired ports and modern devices without wired ports, enhancing versatility across different device types.
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
Simplifies the testing process by allowing wireless connection and ensures reliable results for devices with multiple input and multiple output (MIMO) antennas by preventing standing waves and maintaining insulation between antennas.
Implementation Method 1
an electronic wave absorber 24 is attached to an inner surface of the metallic case 22 to absorb an electronic wave radiated from the wireless terminal 10
Implementation Method 2
a probe antenna which is provided in the metallic box, and located right above or right below an antenna part of a wireless terminal received in the metallic box to receive a signal from a wireless terminal antenna in a non-contact manner
Data Source
AI summary
A shield box for wireless terminal test is provided to simply perform various tests with high reliability even in a non-contact (wireless) connection state with an antenna of a wireless terminal. The shield box includes a metallic box having an internal wireless terminal receiving space therein, and a probe antenna which is provided in the metallic box, and located right above or right below an antenna part of a wireless terminal received in the metallic box to receive a signal from a wireless terminal antenna in a non-contact manner. The metallic box is provided therein with an electronic wave absorber. The probe antenna is a patch antenna. The metallic box includes two parts of upper and lower cases including metallic materials, respectively, such that the metallic box is openable. The upper and lower cases are hinged with each other on rear surfaces thereof.