Abstract
Testing and debugging of immunity issues is challenging in part because it is not known which components inside a system are impacted by an immunity test or at what level. Attaching cables and probes to determine stress voltages and currents within a system is time consuming and can alter the test results. Sensors are proposed for measuring the peak stress voltage experienced within a system during a transient immunity test. The peak current can also be found when the sensor is placed across a transient voltage suppressor with a known I-V curve. The peak level is transmitted wirelessly to a receiver outside the system using frequency-modulated magnetic or electric fields, thus allowing multiple measurements to be made without opening the enclosure or otherwise modifying the system. Two sensing circuits are proposed: one that stores the peak voltage on an external capacitor and the other that uses an analog-to-digital converter to store the level in a register. The capabilities of the circuits were validated with a combination of SPICE and electromagnetic simulations when the sensor was placed inside a typical cell phone enclosure. Simulations demonstrate that the sensors can accurately detect the peak transient voltage and transmit the level to an external receiver.
Original language | English |
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Pages (from-to) | 1231-1239 |
Number of pages | 9 |
Journal | IEEE Transactions on Electromagnetic Compatibility |
Volume | 60 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1 Oct 2018 |
Externally published | Yes |
Keywords
- Electrically fast transient (EFT)
- electrostatic discharge (ESD)
- sensors
- testing
- transient voltage suppressor (TVS)
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering