Split Insulation Housing for High-Frequency Test Boards
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Solution Overview
Problem
Existing test apparatuses for high-frequency electronic devices are bulky and costly due to large insulation boxes that fail to prevent external interference, and converters integrated within these boxes can introduce noise, affecting test accuracy.
Innovation Solution
A test apparatus design featuring a split insulation housing configuration where only the portion of the test board with high-frequency components is enclosed, while low-frequency components are exposed, reducing the size and cost of the insulation box and minimizing external interference by using RF connectors and radiation-absorbing layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a large insulation box encloses the whole test board and DUT, then external interference is blocked, but the size and cost increase significantly
Solution Approach 1:
The test board is divided into two portions: a first portion containing high-frequency components that requires insulation, and a second portion containing low-frequency components that does not require insulation. The insulation box is designed to cover only the first portion, thereby segmenting the insulation requirement and reducing the overall box size while still blocking external interference for the sensitive high-frequency components.
2Ease of operation
If converters are integrated with the insulation box for signal transmission, then signal transmission is enabled, but external noise enters through the converters or gaps, adversely affecting test results
Solution Approach 1:
The converters are extracted from inside the insulation box and relocated to the exterior. The test board extends outside the insulation box to connect with external converters, allowing signal transmission while eliminating the converters as potential entry points for external noise into the insulated environment.
3Ease of operation
If converters are integrated with the insulation box, then signal transmission is enabled, but design must vary with test board changes, increasing cost
Solution Approach 1:
By extracting the converters from the insulation box design and placing them externally, the insulation box becomes a standalone component with a fixed design that can be reused across different test board configurations. The test board itself handles the connection to external converters, eliminating the need to redesign the insulation box when test board requirements change.
Data Source
AI summary
A test apparatus includes a first insulation housing, a second insulation housing configured to be coupled to the first insulation housing, and a test board including a first portion and a second portion. The first insulation housing and the second insulation housing are configured to cover the first portion of the test board and to expose the second portion of the test board.