A screen-printed CPW-fed circularly polarized antenna using a sustainable cork substrate
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Date
2025
Authors
Kumar, Sanjeev
Moloudian, Gholamhosein
Gawade, Dinesh R.
Iacopino, Daniela
O'Flynn, Brendan
Buckley, John L.
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Abstract
This paper presents a novel, coplanar waveguide (CPW)-fed circularly polarized (CP) monopole antenna. The antenna is fabricated using screen-printing techniques, with silver nanoparticles as the conductive material and cork used as a sustainable substrate. Circular polarization is achieved by introducing a radiating element orthogonal to the main radiating monopole element. The measurements of the fabricated antenna show a -10 dB impedance bandwidth of 183 MHz, corresponding to a fractional bandwidth (FBW) of 7.6% at 2.4 GHz. Furthermore, at 2.4 GHz, the antenna demonstrates a measured peak realized gain of -1.8 dBi and a radiation efficiency of 58%. A 3-dB axial-ratio fractional bandwidth for right-hand circular polarization (RHCP) operation at 2.4 GHz is 5.3%. The proposed antenna is well-suited for use in various 2.4 GHz wireless local area network (WLAN) technologies, such as Bluetooth and Wi-Fi, and can be integrated into items such as next-generation smart floors using sustainable materials.
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Keywords
Axial ratio (AR) , Circular polarization (CP) , Monopole antenna , Screen-printed , Sustainable cork substrate , [TyndallMicroNano]
Citation
Kumar, S, Moloudian, G, Gawade, D R, Iacopino, D, O'Flynn, B & Buckley, J L 2025, A screen-printed CPW-fed circularly polarized antenna using a sustainable cork substrate. in 2025 19th European Conference on Antennas and Propagation (EuCAP). 19th European Conference on Antennas and Propagation, EuCAP 2025, Stockholm, Sweden, 30/03/25. https://doi.org/10.23919/EuCAP63536.2025.10999358
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