Built-in Test Antenna Socket for RF Connector Reliability
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Solution Overview
Problem
Existing antenna testing devices face issues with entanglement, displacement, or detachment of radio-frequency connector cables due to frequent back-and-forth movement, and require redesigning of test apparatus and circuitry for each new device design, leading to inefficiencies and increased production costs, as well as frequency shift discrepancies between test and under-test antennas.
Innovation Solution
A test device with a built-in test antenna, featuring a test board, test socket, and antenna assembly where the test antenna is embedded inside the socket, ensuring consistent coupling and reducing frequency shift errors, with the radio-frequency connector fixed on the test board to prevent cable issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plunger with a movable radio-frequency connector and test antenna is used to press the device under test, then the antenna coupling can be achieved, but the cables connected between the radio-frequency connector and test apparatus become entangled, displaced, or detached due to frequent back-and-forth movement
Solution Approach 1:
The test antenna is extracted from the movable plunger and integrated into the stationary test socket. This separates the antenna function from the mechanical pressing function, allowing the plunger to move freely without dragging cables while the antenna remains fixed and reliably connected to the test apparatus.
Solution Approach 2:
The test antenna is merged with the test socket structure, forming an integrated built-in antenna system. This combination eliminates the need for separate movable antenna components and their associated cable connections, thereby improving reliability while simplifying the overall operation.
2Adaptability or versatility
If the radio-frequency connector, test antenna and circuitry are redesigned for each new device design, then the testing can be adapted to new devices, but the production cost increases
Solution Approach 1:
The test socket with built-in test antenna is designed as a universal fixture that can accommodate multiple device under test designs. The standardized interface and positioning system allow different devices to be tested using the same hardware infrastructure, eliminating the need for costly redesigns while maintaining adaptability to new device configurations.
Solution Approach 2:
The test antenna and its connection to the test apparatus are pre-configured in the test socket before the device under test is introduced. This preliminary setup ensures that the testing infrastructure remains constant while only the device being tested changes, reducing the need for repeated modifications and lowering production costs.
3Manufacturing precision
If the plunger and test device are made of different materials, then the structural requirements are met, but the frequency shifts of the antenna under test and test antenna caused by environmental interference are different, requiring additional frequency shift compensation
Solution Approach 1:
The test antenna and antenna under test are positioned in close proximity within the test socket, creating a homogeneous electromagnetic environment for both antennas. This spatial homogeneity ensures that both antennas experience similar environmental interference and frequency shifts, allowing for accurate differential measurements without requiring complex compensation for material-induced frequency variations.
Data Source
AI summary
A test device with a built-in test antenna is provided. The test device is applicable to a device under test having an antenna under test. The test device with a built-in test antenna includes: a test base board, a test socket, and an antenna assembly. The test base board is electrically connected to a test apparatus. The test socket is disposed on the test base board. The device under test is to be disposed on the test socket. The antenna assembly includes a test antenna and an antenna board. The antenna assembly is disposed inside the test socket so as to be coupled to the test antenna. The antenna board is electrically connected to the test base board, and the position of the test antenna corresponds to that of the antenna under test.