https://doi.org/10.1051/epjconf/202532601005
A New Design of a Compact CSRR-Based Microstrip Low-Pass Filter for RF Harvesting Applications
1 Department of Engineering and Computer Science, University of Quebec in Outaouais, Gatineau, Canada, J8Y 3G5
2 LIMA – Advanced Microsystems Engineering Laboratory
3 Department of Electrical Engineering, University of Moncton, Moncton, Canada, E1A 3E9
* e-mail: abbl04@uqo.ca
Published online: 21 May 2025
This work presents the design of a microstrip low-pass filter based on Complementary Split Ring Resonator (CSRR) structure, optimized for association with a rectenna circuit. Efficient filtering is essential for Wireless Power Transfer (WPT) to suppress harmonics and maximize the RF-to-DC conversion efficiency. The proposed filter is mounted on an FR4 substrate ((ε r = 4.4), thickness = 1.6 mm) and optimized using the Moment Method (MoM) and the Finite Integration Technique (FIT).The overall dimensions of the structure are (37.18 mm × 11.3 mm), it ensures low insertion loss and strong harmonic suppression. The simulation results confirm good impedance matching and filtering performance, making this design suitable for rectenna systems that can be inserted into IoT, wireless sensors and remote sensing applications.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
