High-Selectivity Single- and Dual-Band BPF Using a Cross Shaped Coupled-Line Resonator. - Aqeela Saghir; David Chatzichristodoulou; Abdul Quddious; Symeon Nikolaou; Photos Vryonides (MOCAST, 2021)

UHF IoT Humidity and Temperature Sensor for Smart Agriculture Applications Powered from an Energy Harvesting System. - Adnan Nadeem; David Chatzichristodoulou; Abdul Quddious; Nosherwan Shoaib; Loukia Vassiliou; Photos Vryonides; Symeon Nikolaou (IoTaIS, 2022)

Detection Schemes for Integrated SWIPT Receivers with Non-Linear Energy Harvesting. - Eleni Goudeli; Constantinos Psomas; Ioannis Krikidis; Hamza Kiani; David Chatzichristodoulou; Symeon Nikolaou (VTC Spring, 2022)

A Wide Tuning Range Bandpass Filter Using Unequal Width Parallel-Coupled Dual- Mode Resonator. - David Chatzichristodoulou; Michalis Yiannakou; Dimitris E. Anagnostou; Symeon Nikolaou; Photos Vryonides (MOCAST, 2023)

Polarization Converter Metasurface Using Machine Learning Methods for Bandwidth Enhancement. - David Chatzichristodoulou; Photos Vryonides; Symeon Nikolaou; Dimitra-Danai Varsou; Maria Antoniou; Dimitris Mintis; Antreas Afantitis (MOCAST, 2024)

Novel Technologies towards the Implementation and Exploitation of "Green" Wireless Agriculture Sensors. - Loukia Vassiliou; Adnan Nadeem; David Chatzichristodoulou; Photos Vryonides; Symeon Nikolaou (Sensors, 2024)

High Gain Lens-Loaded Circularly Polarized Antennas for RF Jamming Applications. - David Chatzichristodoulou; Photos Vryonides; Dimitris Mintis; Christos Anastasiou; Antreas Afantitis; Symeon Nikolaou (MOCAST, 2025)

Design of a Non-Reciprocal Bandpass Filter Using Varactor Based Spatio-Temporal Modulation in the UHF Band. - Suhail Afroz Mohammad; Gande Arun Kumar; David Chatzichristodoulou; Symeon Nikolaou; Photos Vryonides; Gopi Ram (MOCAST, 2025)