Bachelor Thesis: Investigation and Mitigation of Common-Mode Emissions in RFID Systems (m/f/d)

Bachelor Thesis in Collaboration with NXP Austria

We are looking for a Bachelor’s student currently enrolled at an Austrian university/FH who would like to conduct their Bachelor thesis in collaboration with NXP Austria.
The thesis topic will be defined in alignment with NXP and the respective educational institution. The thesis requires appropriate academic approval and supervision by the university/FH and will be carried out in accordance with the applicable university requirements.

Background:
Common-mode currents can contribute significantly to unwanted electromagnetic emissions in electronic systems. Electrical asymmetries and interactions between different system components can convert differential signals into common-mode currents, potentially affecting EMC performance.

Research Topic:

- The objective of this thesis is to experimentally evaluate common-mode current radiation mechanisms in 13.56 MHz RFID systems using a structured Design of Experiments (DoE) approach and to quantify the impact of mechanical and electrical design parameters on emitted radiation and coupling behavior.

Proposed Tasks:

- Review common-mode and differential-mode current mechanisms relevant to RFID systems

- Define measurable performance indicators such as common-mode current, antenna voltage, magnetic field strength, and radiated emissions.

- Design and perform DoE-based measurement campaigns to quantify the influence of selected mechanical and electrical design parameters.

- Analyze measurement results using statistical methods and identify dominant factors affecting common-mode current generation and radiation.

- Evaluate and validate mitigation techniques such as ferrites, common-mode chokes, shielding, grounding concepts, and PCB layout modifications.

Your Profile:

- Ongoing enrollment in Bachelor studies of electrical engineering, biomedical engineering, information and computer engineering or similar

- Basic knowledge of RF electronics or EMC

- Interest in measurement techniques

- Willingness to perform hands-on laboratory work

- Solid English language skills

For the successful completion of the Bachelor Thesis you will receive a remuneration of a one-time payment of EUR 2.300, - gross. Depending on the performance and end-result, an add-on payment is possible.

More information about NXP in Austria...

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