RF and MICROWAVE SOLUTIONS

About us

RF and Microwave Solutions Ltd (est. 2020), based in Larnaca Cyprus is a vibrant start-up co-founded by a group of young and motivated Electrical Engineers in order to exploit UAVs as communication platforms for next generation communication systems. RF& MW was established after the successful pitch for pre-seed funding with the immediate market objective to implement a UAV mounted RFID reader which can read batteryless entirely passive RIFD enabled sensors with power harvesting capabilities.

Our Team

Dr Abdul Quddious

Managing Director, Founder
abdul.quddious@rf-microwave-solutions.com

PhD degrees in Electrical Engineering from the Frederick University, Nicosia, Cyprus in 2019. His research interests include reconfigurable RF electronics, wireless power transfer, RFIDs, passive and active antennas for biomedical devices, implantable optoelectronic and wireless sensors.

Ms Pantelitsa Nikolaou

Chief Finance Officer, Co-Founder
pantelitsa.nikolaou@rf-microwave-solutions.com

Ms Pantelitsa received Msc in Biomedical Engineering from Imperial College, London, United Kingdom in 2014. Her interest included Biomedical Imaging, Statistics and Data Analysis, Physiological Monitoring and Data Analysis, Image Processing..

Mr David Hadjichristodoulou

RF Design Engineer, Co-Founder
david.hadjichristodoulou@rf-microwave-solutions.com

Mr Hadjichristodoulou received BS electrical engineering from the Frederick University, Nicosia, Cyprus in 2019. His senior design project was on detecting the Direction of Arrival of a signal originating from a flying UAV.

Publications

Journals:

13. A. Nadeem, S. Nikolaou, D. Psychogiou and P. Vryonides, “Multifunctional and Reconfigurable Bandpass Filters With Continuously Tunable Attenuation or Quasi-Reflectionless Behavior,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 71, no. 10, pp. 4466-4470, Oct. 2024.

12. P. Vryonides, S. Arain, A. Quddious, D. Psychogiou and S. Nikolaou, S. Nikolaou,"A New Class of High-Selectivity Bandpass Filters With Constant Bandwidth and 5:1 Bandwidth Tuning Ratio," in IEEE Access, vol. 12, pp. 16489-16497, Feb. 2024.

11. I. Aitbar, N. Shoaib, A. Alomainy, A. Quddious, S. Nikolaou, M. A. Imran, Q. H. Abbasi, “AMC integrated multilayer wearable antenna for multiband WBAN applications” in Computers, Materials and Continua. Oct. 2021.

10. T. Tamoor, N. Shoaib, F. Ahmed, A. Quddious, et. all, “A Multifunctional Ultrathin Flexible Bianisotropic Metasurface with Miniaturized Cell Size” in Nature Scientific Reports, Sep. 2021.

9. S. M. Q. A. Shah, N. Shoaib, A. Quddious, et. all, “A Multiband Circular Polarization Selective Metasurface For Microwave Applications” in Nature Scientific Reports, vol. 11, pp. 1774, Jan. 2021.

8. S. Arain, P. Vryonides, K. Nisar, A. Quddious and S. Nikolaou, "Novel Selective Feeding Scheme Integrated with SPDT Switches for a Reconfigurable Bandpass-to-Bandstop Filter," in IEEE Access, vol. 9, pp. 25233-25244, Jan 2021.

7. A. Quddious, , S. Zahid, Farooq A. Tahir, Marco A. Antoniades, P. Vryonides and S. Nikolaou, “Dual-Band Compact Rectenna for UHF and ISM WPT systems” in IEEE Transactions on Antennas and Propagationvol. 69, no. 4, pp. 2392-2397, April 2021.

6. A. Quddious, M. Ali Babar Abbasi, Marco A. Antoniades, P. Vryonides, S. Nikolaou, “Dynamically Reconfigurable Notch-Band UWB Antenna with FET Switch using Rectenna and Passive Booster”, in IEEE Transactions on Antennas and Propagation, vol. 68, no. 8, pp. 5872-5881, Aug. 2020

5. S. Arain, A. Quddious, S. Nikolaou, P. Vryonides, “Demonstration of Reconfigurable BPFs with Wide Tuning Bandwidth Range Using 3λ/4 Open- and λ/2 Short- Ended Stubs” in Technologies,8, 14, 2020.

4. S. Arain, A. Quddious, P. Vryonides and S. Nikolaou, " Reconfigurable BPF with Constant Centre Frequency and Wide Tuning Range of Bandwidth " in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 67, no. 8, pp. 1374-1378, Aug. 2020.

3. A. Quddious, M. Ali Babar Abbasi, Farooq A. Tahir, Marco A. Antoniades, P. Vryonides, S. Nikolaou, “UWB Antenna with Dynamically Reconfigurable Notch-Band using Rectenna and Active Booster”, in IET Microwaves, Antennas & Propagation,vol. 13, no. 12, pp. 2046-2052, Oct. 2019.

2. A. Quddious, M. Ali Babar Abbasi, A. Saghir, S. Arain, Marco A. Antoniades, A. Polycarpou, P. Vryonides and S. Nikolaou, “Dynamically Reconfigurable SIR Filter Using Rectenna and Active Booster”, in IEEE Transactions on Microwave Theory and Techniques, IEEE Transactions on Microwave Theory and Techniques,

1. A. Saghir, A. Quddious, S. Arain, P. Vryonides and S. Nikolaou, "Single-/Dual- BPF Using Coupled-Line Stepped Impedance Resonators (CLSIR)" in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 66, no. 9, pp. 1497-1501, Sept. 2019.

Conferences

21. A. Nadeem, S. Nikolaou, D. Psychogiou and P. Vryonides, “Multifunctional and Reconfigurable Bandpass Filters With Continuously Tunable Attenuation or Quasi-Reflectionless Behavior,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 71, no. 10, pp. 4466-4470, Oct. 2024.

20. A. Nadeem, S. Nikolaou, D. Psychogiou and P. Vryonides, “An alternative Design Approach for the Design of Wideband Bandpass Filters Based on Cascaded Building Blocks,” 2024 54th European Microwave Conference (EuMC), Paris, France, pp. 184-187, Oct. 2024.

19. D. Chatzichristodoulou, P. Vryonides, D. Psychogiou and S. Nikolaou, “Directional Metasurface with Selective Polarization Using Antenna Elements,”2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI), Firenze, Italy, pp. 1561-1562, Jul. 2024.

18. M. Shirazi, D. Chatzichristodoulou, A. Quddious,N. Shoaib, D. Psychogiou, S. Nikolaou, and P. Vryonides, “Multifunctional Switchable Filter Using Shorted Coupled-Line Sections”in 52nd European Microwave Conference (EuMC), Milan, Italy 2022.

17. A. Nadeem, D. Chatzichristodoulou, A. Quddious, N. Shoaib, L. Vassiliou, P. Vryonides and S. Nikolaou, “WPT Enabled Autonomous RFID Tag for Enhanced Range and Accuracy Localization” in 2022 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Denver, Colorado, USA, 2022.

16. H. Kiani, A. Quddious, D. Chatzichristodoulou, N. Shoaib, D. Psychogiou, P. Vryonides and S. Nikolaou, “Radiation Beam Steering Using a Microfluidically Reconfigurable Metasurface Superstrate” in2022 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Denver, Colorado, USA, 2022.

15. H. Kiani, A. Nadeem, A. Quddious, D. Chatzichristodoulou, Shoaib, D. Psychogiou, P. Vryonides, S. Nikolaou, “Polarization Agility Using a Microfluidically Reconfigurable Metasurface” in 2022 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Denver, Colorado, USA, 2022.

14. D. Chatzichristodoulou, A. Quddious, , G. Paolini, D. Masotti, A. Costanzo, P. Vryonides and S. Nikolaou, “UHF and ISM Band MIMO Antenna for an Energy-Autonomous SWIPT system” in 2022 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Denver, Colorado, USA, 2022.

13. G. Paolini, A. Quddious, D. Chatzichristodoulou,D. Masotti, S. Nikolaou, and A. Costanzo “An Energy-Autonomous SWIPT RFID Tag for Communication in the 2.4 GHz ISM Band” in 3rd URSI Atlantic / Asia-Pacific Radio Science Meeting (AT-AP-RASC)), Gran Canaria, Spain, 2022.

12. H. Kiani, D. Chatzichristodoulou, A. Quddious, N. Shoaib, P. Vryonides and S. Nikolaou, “Improved Rectifier Efficiency Using Multi-Sine Input Signals” in International Workshop on Antenna Technology (iWAT), Dublin, Ireland, 2022.

11. A. Nadeem,D. Chatzichristodoulou, H. Kiani, A. Quddious, N. Shoaib, P. Vryonides, S. Nikolaou, “Transmitter Considerations for 5G Wireless Powered Sensor Networks” in 16th European Conference on Antennas and Propagation (EuCAP), Madrid, Spain, 2022.

10. H. Kiani, D. Chatzichristodoulou, A. NadeemA. Quddious, N. Shoaib, P. Vryonides, S. Nikolaou, “Microfluidically Frequency & Polarization Reconfigurable Patch Antennas” in16th European Conference on Antennas and Propagation (EuCAP), Madrid, Spain, 2022.

9. D. Chatzichristodoulou, G. Paolini,A. Quddious, D. Masotti, A. Costanzo, P. Vryonides and S. Nikolaou, “Dual Frequency MIMO Rectenna with Two-Branch Rectifier and Common Power Storage Unit,” in 16th European Conference on Antennas and Propagation (EuCAP), Madrid, Spain, 2022.

8. S. Agarwal, D. Chatzichristodoulou, A. Quddious, >D. Masotti, S. Nikolaou, and A. Costanzo “HIS design for an environment-robust UHF/UWB antenna with 3D-printed inclusions”in 2021 51st European Microwave Conference (EuMC), London, pp. 817-820, 2022.

7. M. Shirazi, D. Chatzichristodoulou, A. Quddious, N. Shoaib, D. Psychogiou, S. Nikolaou and P. Vryonides, “Non-Reciprocal Bandpass Filter with Tunable Center Frequency and Constant Fractional Bandwidth” in Perugia, Italy, pp. 252-254, 2021.

6. A. Saghir, D. Chatzichristodoulou, A. Quddious, S. Nikolaou and P. Vryonides, “High-Selectivity Single-and Dual-Band BPF Using a Cross Shaped Coupled-Line Resonator”, in IEEE Transactions on Circuits and Systems II: Express Briefs, Thessaloniki, pp. 1-4, 2021.

5. A. Saghir, D. Chatzichristodoulou, A. Quddious, S. Arain, P. Vryonides and S. Nikolaou, "Single-/Dual- BPF Using Coupled-Line Stepped Impedance Resonators (CLSIR)" in10th International Conference on Modern Circuits and Systems Technologies (MOCAST), Thessaloniki, pp. 1-4, 2021.

4. D. Chatzichristodoulou, A. Quddious, , C. Ioakimidis, N. Shoaib, P. Vryonides, S. Nikolaou, “Reconfigurable Beamforming Array for Far- 2021 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Singapore, 2021

3. A. Nadeem, D. Chatzichristodoulou, S. Arain, P. Vryonides and S. Nikolaou, "Single-/Dual- BPF Using Coupled-Line Stepped Impedance Resonators (CLSIR)" in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 66, no. 9, pp. 1497-1501, Sept. 2019.

2. D. Chatzichristodoulou, A. Quddious, L. Vassiliou, N. Shoaib, P. Vryonides and S. Nikolaou, “Additive Manufacturing Techniques for 5G IoT Antennas and Sensors,” in 15th European Conference on Antennas and Propagation (EuCAP), Dusseldorf,Germany, pp. 1-5, 202, 2021.

1. D. Chatzichristodoulou, S. Pericleous, L. Vassiliou, A. Quddious, P. Vryonides and S. Nikolaou, “3-D printed Helical Antenna for UAV Transmission Signal Direction of Arrival (DoA) Detection”, in 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, Montreal, QC, Canada, 2020.