Design and Experimental Validation of Compact NFC Antenna and Embedded SiP RFID Module Based on LTCC and PCB Technologies

Alena Pietriková; Igor Vehec; Tomáš Lenger; Peter Lukács

doi:10.2478/aei-2026-0011

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Design and Experimental Validation of Compact NFC Antenna and Embedded SiP RFID Module Based on LTCC and PCB Technologies

Acta Electrotechnica et Informatica

Volume 26 (2026): Issue 2 (June 2026)

By: Alena Pietriková, Igor Vehec, Tomáš Lenger and Peter Lukács

Open Access

|Jun 2026

Abstract

This paper presents the design, fabrication, and experimental validation of compact NFC antenna structures and a miniaturized RFID module based on System-in-Package (SiP) integration. Planar spiral antennas operating at 13.56 MHz are implemented on LTCC and PCB substrates using two-layer and three-layer configurations. The influence of substrate material, geometry, and tuning strategy on inductance, resonance frequency, reflection coefficient, and Q-factor is experimentally evaluated using vector network analysis. A compact RFID module is subsequently realized using a cavity-based SiP architecture with face-down chip integration and anisotropic conductive film (ACF) interconnection. The results demonstrate that substrate selection and integration strategy significantly affect electrical performance, coupling efficiency, and miniaturization limits, providing a practical basis for the development of embedded SiP RFID/NFC modules.

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Articles in this issue

DOI: https://doi.org/10.2478/aei-2026-0011 | Journal eISSN: 1338-3957 | Journal ISSN: 1335-8243

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Language: English

Page range: 55 - 63

Submitted on: Apr 15, 2026

Accepted on: May 28, 2026

Published on: Jun 17, 2026

Published by: Technical University of Košice

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

NFC antenna,

RFID,

LTCC,

PCB,

System-in-Package (SiP),

miniaturization

Related subjects:

Computer sciences,

Information technology,

Databases and data mining,

Engineering,

Electrical engineering,

Information technology

© 2026 Alena Pietriková, Igor Vehec, Tomáš Lenger, Peter Lukács, published by Technical University of Košice
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 26 (2026): Issue 2 (June 2026)