Dynamic Antenna Impedance Tuning for Sub-GHz Systems

Dorn C, Pfannenmüller C, Gabsteiger J, Kurin T, Lurz F, Hagelauer A (2025)

Publication Type: Conference contribution

Publication year: 2025

Publisher: Institute of Electrical and Electronics Engineers Inc.

Pages Range: 43-45

Conference Proceedings Title: 2025 IEEE Topical Conference on Wireless Sensors and Sensor Networks, WiSNeT 2025

Event location: San Juan, PR, USA

ISBN: 9798331507336

DOI: 10.1109/WiSNeT63956.2025.10905013

Abstract

In all wireless systems, high power transfer from the RF front-end (RFFE) to the antenna is required. To achieve this, impedance matching between the RFFE and the antenna is necessary. Most applications assume a static antenna impedance for a given frequency band and thus only require a single static matching network per band. In reality, changing near-field conditions (e.g. due to human interaction) require a rapid adaption or in-band mismatch requires a finer change in impedance matching. This work introduces and compares several topologies that allow dynamic adaptive antenna impedance tuning in sub-GHz applications. They even permit a strong mismatch with a voltage standing wave ratio (VSWR) of 20:1 with a high power rating suitable for transmission in mobile applications.

Authors with CRIS profile

Christof Pfannenmüller Lehrstuhl für Technische Elektronik (LTE) Jasmin Gabsteiger Lehrstuhl für Technische Elektronik (LTE)

Involved external institutions

Technische Universität München (TUM) DE Germany (DE) Otto-von-Guericke-Universität Magdeburg DE Germany (DE)

How to cite

APA:

Dorn, C., Pfannenmüller, C., Gabsteiger, J., Kurin, T., Lurz, F., & Hagelauer, A. (2025). Dynamic Antenna Impedance Tuning for Sub-GHz Systems. In 2025 IEEE Topical Conference on Wireless Sensors and Sensor Networks, WiSNeT 2025 (pp. 43-45). San Juan, PR, USA: Institute of Electrical and Electronics Engineers Inc..

MLA:

Dorn, Christian, et al. "Dynamic Antenna Impedance Tuning for Sub-GHz Systems." Proceedings of the 2025 IEEE Topical Conference on Wireless Sensors and Sensor Networks, WiSNeT 2025, San Juan, PR, USA Institute of Electrical and Electronics Engineers Inc., 2025. 43-45.

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