Capacitive Coupling Microelectronics Testing Fixture
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Solution Overview
Problem
Existing methods for detecting counterfeit and compromised microelectronic devices, such as RF emission analysis, are inadequate for identifying performance issues in authentic devices degraded by environmental conditions or reuse, as they require specialized fixtures and direct electrical connections.
Innovation Solution
A microelectronic assessment device using capacitive coupling to energize the device without direct pin-to-metal contact, allowing for RF emission analysis to determine authenticity and reliability, which can be applied to a diverse range of part packages and pin layouts without specific socket configurations or voltage requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct pin-to-metal electrical contact is used to energize the microelectronic device, then reliable electrical connection is achieved, but test setup time increases and device complexity increases due to specialized fixtures
Solution Approach 1:
The patent introduces an intermediary capacitive coupling mechanism that transfers electrical energy wirelessly to the microelectronic device. The capacitive plates act as a mediator to induce currents in the device without requiring direct physical contact with pins, thereby eliminating the need for specialized fixtures while maintaining reliable energization.
Solution Approach 2:
The patent replaces the mechanical pin-to-metal contact system with an electromagnetic field-based capacitive coupling system. This substitution eliminates the need for physical fixture connections and direct mechanical contact, significantly reducing test setup time while maintaining electrical connection reliability through field-based energy transfer.
2Measurement precision
If specialized custom fixtures are manufactured for each microelectronic device type, then precise electrical connection is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent designs a universal capacitive coupling fixture that can be used with multiple types of microelectronic devices without requiring custom manufacturing for each device type. The capacitive plates and RF source configuration provide a standardized approach that works across diverse device types, reducing fixture complexity while maintaining measurement precision through consistent capacitive coupling.
3Reliability
If direct electrical connection with specific socket configurations is required, then accurate device energization is achieved, but adaptability to different part packages and pin layouts is reduced
Solution Approach 1:
The capacitive coupling mechanism serves as a universal intermediary that can transfer electrical energy to various microelectronic devices regardless of their specific package types or pin layouts. The RF source and capacitive plates create an electromagnetic field that can couple with different device configurations, providing adaptability while maintaining energization accuracy.
Solution Approach 2:
The patent employs adjustable parameters in the capacitive coupling system, including variable RF frequencies and power levels, to optimize energy transfer to different microelectronic devices. This parameter adjustment capability allows the same fixture to adapt to diverse package types and pin layouts while maintaining accurate device energization.
4Reliability
If conventional testing methods are used for authentic devices at performance limits, then overall authenticity can be determined, but performance issues cannot be identified
Solution Approach 1:
The patent uses periodic RF signals at multiple frequencies to stimulate the microelectronic device and elicit RF emissions that reveal performance characteristics. By analyzing the device's response to periodic electromagnetic stimulation across different frequency ranges, the system can detect both authenticity and performance degradation with high precision.
Solution Approach 2:
The system employs feedback mechanisms by analyzing the RF emissions from the device in response to the capacitive coupling stimulation. The signal analyzer processes the emitted signals and provides feedback information about device authenticity and performance status, enabling precise characterization of devices at performance limits.
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 method significantly reduces test setup and execution time by a factor of 10 to 100, enabling faster and more convenient assessment of microelectronic device authenticity and reliability through indirect energization and RF emission analysis.
Implementation Method 1
The device energizes the microelectronic PSUT indirectly by inducing an electrical current in the microelectronic PSUT by capacitive coupling. Capacitive coupling is accomplished with a capacitive member, preferably two capacitive plates also known as illumination plates that serve as an RF illuminator.
Implementation Method 2
The device has a test fixture in the preferred embodiment that has two or more layers. The first layer has the capacitive plates that are registered at a predetermined spacing from each other. The second layer positioned above the first layer has a cavity to receive the PSUT.
Data Source
AI summary
A device and method to test microelectronic parts to determine whether the parts are compromised by active illumination in a testing fixture by analysis of emission metrics.