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Frequency Selective Surface for Ultra-Wide Band Filtering and Shielding
Aldo De Sabata1, Ladislau Matekovits1,2,3, Adrian Buta1
1Department of Measurements and Optical Electronics, Politehnica University Timisoara, 300006 Timisoara, Romania.
Sensors (Basel, Switzerland)
|March 10, 2022
Summary
A novel frequency selective surface provides spatial filtering for Ultra-Wide Band applications. It achieves a wide 1.75-15.44 GHz stop-band with excellent angular stability and polarization insensitivity.
Area of Science:
- Electromagnetics
- Materials Science
Background:
- Ultra-Wide Band (UWB) systems require efficient spatial filtering.
- Existing solutions may lack broad stop-bands or angular stability.
Purpose of the Study:
- To propose and validate a frequency selective surface (FSS) for UWB spatial filtering.
- To achieve a wide stop-band with robust performance against incidence angle and polarization.
Main Methods:
- Design and electromagnetic simulation of a square-shaped unit cell FSS.
- Implementation on an FR4 substrate.
- Experimental validation in an anechoic chamber.
Main Results:
- Achieved a wide stop-band from 1.75 GHz to 15.44 GHz.
- Demonstrated polarization insensitivity.
- Exhibited angular stability exceeding 60° (TE) and 50° (TM).
- Validated simulation results with experimental data.
Conclusions:
- The proposed FSS is effective for UWB spatial filtering.
- The design offers a large stop-band and reliable performance.
- The device operates as intended, matching simulation predictions.
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