Multi-Chamber UWB Test Fixture With EMI Absorber Gaps

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Solution Overview

Problem

Existing test apparatuses for ultra-wideband (UWB) devices experience interference between adjacent devices, leading to reduced accuracy of test results.

Innovation Solution

The apparatus includes a base platform, a cover plate with an array of test chambers and gaps, and electromagnetic absorber material in the gaps to absorb interferences between adjacent devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple UWB devices are placed in a single test apparatus for parallel testing, then productivity is improved, but electromagnetic interference between adjacent devices increases leading to reduced measurement precision

Engineering Contradiction:

Improveparallel testing capabilityVSAvoidtest result accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The test apparatus is divided into multiple independent test chambers separated by gaps, with each chamber housing a single UWB device for testing. This segmentation isolates each device electromagnetically while maintaining parallel testing capability across multiple chambers.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Electromagnetic absorber material is placed in the gaps between adjacent test chambers to absorb electromagnetic waves and prevent interference between neighboring devices. This intermediary material enables close spacing of chambers while maintaining measurement precision.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If test chambers are placed closer together to reduce apparatus size, then device complexity is reduced, but electromagnetic interference between adjacent devices increases

Engineering Contradiction:

Improveapparatus sizeVSAvoidelectromagnetic interference

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

Electromagnetic absorber material is positioned in the gaps between test chambers to act as a mediator that blocks electromagnetic interference. This allows chambers to be placed closer together without increasing interference levels.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The gaps between test chambers are specifically treated with electromagnetic absorber material, creating a localized interference-blocking region. This targeted approach reduces interference without requiring increased spacing between all components.

Inventive Principle:

Principle #3Local quality

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

This configuration significantly reduces electromagnetic interference between UWB devices, enhancing the accuracy of test results and reducing test failure rates.

Implementation Method 1

an electromagnetic absorber material disposed within the at least one gap and attached onto the cover plate to absorb electromagnetic interferences between adjacent electronic devices

Methodology Applied

Scientific EffectElectromagnetic absorption: Absorption (EM radiation)

Data Source

PatentUS20250035698A1Apparatus for testing electronic devices

Publication Date: 2025.01.30 JCET STATS CHIPPAC KOREA LTD

AI summary

An apparatus for testing electronic devices comprises: a base platform; a cover plate disposed on the base platform, and defining with the base platform an array of test chambers and at least one gap separating the test chambers from each other, wherein the cover plate has at each of the test chambers a top opening for placing an electronic device within the test chamber and a side wall around the opening; an array of test boards each being disposed under one of the array of test chambers, wherein each test board includes a socket connectable with the electronic device placed within the test chamber for testing; and an electromagnetic absorber material disposed within the at least one gap and attached onto the cover plate to absorb electromagnetic interferences between adjacent electronic devices when they are placed within the array of test chambers for testing.