2025

Vasistha, Anup Raju, Mahadevaswamy, Chandramouli H., Ebenuwa, Solomon H. and Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 (2025) Chapter 3. Investigating single-to dual-band bandpass filter transformation for wireless communication systems. In: Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269, (ed.) RFID, Microwave Circuit, and Wireless Power Transfer Enabling 5/6G Communication. IGI Global Scientific Publishing, Hershey PA, USA, pp. 71-86. ISBN 979-8369387993; 979-8369388006; 979-8369388013 (doi:10.4018/979-8-3693-8799-3.ch003)

Mayowa, Moyinoluwalogo, Otuka, Richard I., Ajienka, Nemitari and Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 (2025) Chapter 6. Enhancing public safety in developing countries using a mobile application solution: Nigeria as a case study. In: Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269, (ed.) RFID, Microwave Circuit, and Wireless Power Transfer Enabling 5/6G Communication. IGI Global Scientific Publishing, Hershey, PA, USA, pp. 155-206. ISBN 979-8369387993; 979-8369388006; 979-8369388013 (doi:10.4018/979-8-3693-8799-3.ch006)

Egbe, Gregory Omozuhiomwen, Arinze, Stella Ndidi, Obi, Emenike Raymond and Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 (2025) Chapter 9. Multisensor data fusion and its application. In: Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269, (ed.) RFID, Microwave Circuit, and Wireless Power Transfer Enabling 5/6G Communication. IGI Global, Hershey, PA, USA, pp. 255-290. ISBN 979-8369387993; 979-8369388006; 979-8369388013 (doi:10.4018/979-8-3693-8799-3.ch009)

Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (ed.) (2025) RFID, Microwave Circuit, and Wireless Power Transfer Enabling 5/6G Communication. IGI Global, Hershey, Pennsylvania, USA. ISBN 979-8369387993; 979-8369388006; 979-836938801

Ijemaru, Gerald K., Ang, Kenneth Li-Minn, Seng, Jasmine Kah Phooi, Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269, Yeoh, Phee Lep and Oleka, Emmanuel U. (2025) On-demand energy provisioning scheme in large-scale WRSNs: survey, opportunities, and challenges. Energies, 18 (2):358. ISSN 1996-1073 (Online) (doi:10.3390/en18020358)

Omozuhiomwen, Gregory Egbe, Kure, Halima I., Obi, Emenike Raymond, Ebenuwa, Solomon H., Ijemaru, Gerald K. and Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 (2025) Reliability–centered maintenance using reliability parameters on gas compressors. International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME), 14 (1):367256. ISSN 2156-1680 (Print), 2156-1672 (Online) (doi:10.4018/IJMMME.367256)

2024

Mohod, Priya Tushar, Otuka, Richard I., Ajienka, Nemitari, Ihianle, Isibor Kennedy and Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 (2024) A mobile application to facilitate meal box sharing in corporate environments using cloud infrastructure. Electronics, 13 (23):4631. ISSN 2079-9292 (Online) (doi:10.3390/electronics13234631)

Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 and Paul, Rose (2024) Three-way equal filtering power divider for modern communication systems. Engineering Reports:e13036. ISSN 2577-8196 (Online) (doi:10.1002/eng2.13036)

Egbe, Gregory, Arinze, Stella, Ebenuwa, Solomon, Nwajana, Emenike and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2024) Maintenance resources optimization using Pareto analysis: instrumentation air compressor in Oredo, Nigeria. International Journal of Manufacturing, Materials, and Mechanical Engineering, 13 (1). pp. 1-14. ISSN 2156-1680 (Print), 2156-1672 (Online) (doi:10.4018/IJMMME.353392)

Arinze, Stella N., Okafor, Patrick U., Obi, Emenike R. and Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 (2024) Implementation of radio frequency identification technology for a secure and intelligent shopping cart. Bulletin of Electrical Engineering and Informatics (BEEI), 14 (1):8243. pp. 143-152. ISSN 2089-3191 (Print), 2302-9285 (Online) (doi:10.11591/eei.v14i1.8243)

Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 and Paul, Rose (2024) 3-way equal filtering power divider using compact folded-arms square open-loop resonator. In: Proceedings of the 25th International Microwave and Radar Conference (MIKON) 1st - 4th July 2024, Wroclaw, Poland. IEEE Xplore . Institute of Electrical and Electronics Engineers (IEEE), Piscataway, New Jersey, pp. 189-193. ISBN 978-8396972613; 979-8350371611 ISSN 2770-3045 (Print), 2995-0570 (Online) (doi:10.23919/MIKON60251.2024.10633981)

Mahadevaswamy, Chandramouli H., Vasistha, Anup and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2024) Dual-band bandpass filter derived from the transformation of a single-band bandpass filter. In: 2024 25th International Microwave and Radar Conference (MIKON). IEEE. ISBN 979-8350371611 ISSN 2770-3045 (Print), 2995-0570 (Online) (doi:10.23919/MIKON60251.2024.10633986)

Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 (2024) Call for chapters: RFID, microwave circuit, and wireless power transfer enabling 5/6G communication. IGI Global - Information Resources Management Association, Hershey, PA, USA.

Saeed, Muhammad Asfar, Obi, Emenike R. and Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 (2024) A compact linear microstrip patch beamformer antenna array for millimeter-wave future communication. Sensors, 24 (13):4068. pp. 1-13. ISSN 1424-8220 (Online) (doi:10.3390/s24134068)

Saeed, Muhammad and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2024) A review of beamforming microstrip patch antenna array for future 5G/6G networks. Frontiers in Mechanical Engineering, 9:1288171. pp. 1-15. ISSN 2297-3079 (Online) (doi:10.3389/fmech.2023.1288171)

Meng, Fanyi, Zhu, Forest, Jin, Jing, Zhou, Peigen, Moloudian, Gholamhosein and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2024) Call for papers for IET special issue: Emerging technologies in analogue and RF integrated circuits and systems enabling 5/6G communication. Institution of Engineering and Technology (IET).

Saeed, Muhammad A. and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2024) Sub-terahertz microstrip antenna array for future communication. In: 2023 International Conference on Electrical, Computer and Energy Technologies (ICECET). Cape Town, South Africa, 16th - 17th November 2023. IEEE Xplore . Institute of Electrical and Electronics Engineers (IEEE), Piscataway, New Jersey, pp. 1-4. ISBN 979-8350327816; :979-8350327823 (doi:10.1109/ICECET58911.2023.10389582)

2023

Gregor, Raul, Yeap, Kim H. and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (eds.) (2023) Power Electronics, Radio Frequency and Microwave Engineering. IntechOpen, London. ISBN 978-1803569123; 978-1803569116; 978-1803569130

Saeed, Muhammad A. and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2023) U-Shaped terahertz microstrip patch antenna for 6G future communications. In: 2023 7th International Electromagnetic Compatibility Conference (EMC Turkiye). 17th - 20th September 2023. Istanbul, Turkiye. IEEE Xplore . Institute of Electrical and Electronics Engineers (IEEE), Piscataway, New York, pp. 1-4. ISBN 979-8350342130; 979-8350342147 (doi:10.1109/EMCTurkiye59424.2023.10287461)

Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 and Okafor, Patrick (2023) Call for Papers for Frontiers in Mechanical Engineering Special Issue: RFID and RF Circuits/Components. Frontiers Media.

Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2023) Special Issue Title: RFID and applications of RF/microwave circuits and systems. MDPI, Basel, Switzerland. (In Press)

Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 and Obi, Emenike Raymond (2023) Application of compact folded-arms square open-loop resonator to bandpass filter design. Micromachines, 14 (2):320. ISSN 2072-666X (Online) (doi:10.3390/mi14020320)

Saeed, Muhhamed and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2023) A novel beamforming antenna array for 5G and beyond applications. In: Proc. of the 8th International Conference on Engineering and Emerging Technologies (2022 ICEET). 27-28 October 2022. Kuala Lumpur, Malaysia. IEEE Xplore . Institute of Electrical and Electronics Engineers (IEEE), Piscataway, New Jersey, pp. 1-4. ISBN 978-1665491068; 978-1665491051; 978-1665491075 ISSN 2409-2983 (Print), 2831-3682 (Online) (doi:10.1109/ICEET56468.2022.10007412)

2022

Saeed, Muhammad A., Ahmad, Muneeb, Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269, Rehman, Masood Ur, Muhammad Ammar, Sohaib and Ateeqa, Naseer (2022) Coaxial feed ultra-wideband microstrip antenna for medical applications. In: 2022 International Conference on Electrical, Computer and Energy Technologies (ICECET), 20-22 July 2022. Prague, Czech Republic. ICECET Series (2). Institute of Electrical and Electronics Engineers (IEEE), Piscataway, New Jersey, pp. 1-4. ISBN 978-1665470872; 978-1665470889 (doi:10.1109/ICECET55527.2022.9872795)

Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (ed.) (2022) 5G Internet of Things and changing standards for computing and electronic systems. Advances in Computer and Electrical Engineering (ACEE) Book Series . IGI Global, Hershey, Pennsylvania, USA. ISBN 978-1668438558; 1668438550; 978-1668438565; 978-1668438572

Imasuen, Ifueko Itohan and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2022) Balancing WTO-TRIPS standard against Nigeria counterfeit regulatory efforts: a critique. International Journal of Public and Private Perspectives on Healthcare, Culture, and the Environment, 6 (1):75. pp. 1-19. ISSN 2471-1047 (Print), 2471-1055 (Online) (doi:10.4018/IJPPPHCE.301575)

Obi, Emenike and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2022) AssessLIFE software for automation of asset degradation to estimate Asset life and degradation drivers. In: Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269, (ed.) 5G Internet of Things and Changing Standards for Computing and Electronic Systems. IGI Global, Hershey, Pennsylvania, pp. 30-80. ISBN 978-1668438558; 1668438550; 978-1668438565; 978-16684385 (doi:10.4018/978-1-6684-3855-8.ch002)

Kure, Halima and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2022) Protection of critical infrastructure using an Integrated Cybersecurity Risk Management (i-CSRM) framework. In: Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269, (ed.) 5G Internet of Things and Changing Standards for Computing and Electronic Systems. IGI Global, Hershey, Pennsylvania, pp. 94-133. ISBN 978-1668438558; 1668438550; 978-1668438565; 978-16684385 (doi:10.4018/978-1-6684-3855-8.ch004)

Obi, Emenike R. and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2022) Modeling, integration, and automation of degradation to generate asset lifespan analytics using AssessLIFE software. International Journal of Manufacturing, Materials, and Mechanical Engineering, 12 (1):28. pp. 1-40. ISSN 2156-1680 (Print), 2156-1672 (Online) (doi:10.4018/IJMMME.300828)

Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 and Obi, Emenike Raymond (2022) A review on SIW and its applications to microwave components. Electronics, 11 (7):1167. pp. 1-21. ISSN 2079-9292 (Online) (doi:10.3390/electronics11071160)

Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 and Yeo, Kenneth S. K. (eds.) (2022) Emerging research in microwave systems and applications. Electronics: Emerging Research in Microwave Systems and Applications -Microwave and Wireless Communications . MDPI, Basel, Switzerland. ISSN 2079-9292 (Online)

2021

Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 and Zhou, Jiafeng (eds.) (2021) Advancements in RF, microwave and millimeter-wave circuits and devices. Electronics: Emerging Research in Microwave Systems and Applications - Microwave and Wireless Communications . MDPI, Basel, Switzerland. ISSN 2079-9292 (Online)

Ijemaru, Gerald and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2021) Image processing system using MATLAB-based analytics. Bulletin of Electrical Engineering and Informatics, 10 (5). pp. 2566-2577. ISSN 2089-3191 (Print), 2302-9285 (Online) (doi:10.11591/eei.v10i5.3160)

Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2021) A step-by-step approach to bandpass/channel filter design. International Journal of Electronics, Communications, and Measurement Engineering, 10 (2):1. pp. 1-14. ISSN 2578-7551 (Print), 2578-7543 (Online) (doi:10.4018/IJECME.2021070101)

Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2021) Formulation for energy distribution in T-junctions for diplexer design. In: 2021 International Conference on Electrical, Communication, and Computer Engineering (ICECCE). Kuala Lumpur, Malaysia. 12-13 June 2021. IEEExplore . Institute of Electrical and Electronics Engineers (IEEE), Piscataway, NJ, pp. 1-4. ISBN 9781665438971 ; 9781665446020 (doi:10.1109/ICECCE52056.2021.9514074)

Ogbodo, Eugene and Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2021) A bandpass filter using edge coupled and direct coupled techniques. In: 2021 International Conference on Electrical, Communication, and Computer Engineering (ICECCE). Kuala Lumpur, Malaysia. 12-13 June 2021. IEEE Xplore . Institute of Electrical and Electronics Engineers (IEEE), Piscataway, NJ, pp. 1-4. ISBN 9781665438971 ; 9781665446020 (doi:10.1109/ICECCE52056.2021.9514068)

Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 and Ihianle, Isibor (eds.) (2021) Handbook of Research on 5G Networks and Advancements in Computing, Electronics, and Electrical Engineering. IGI Global, USA. ISBN 9781799869924

Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269, Obi, Emenike Raymond, Ijemaru, Gerald Kelechi, Oleka, Emmanuel U. and Anthony, Destiny Chidi (2021) Fundamentals of RF/Microwave bandpass filter design. In: Nwajana, Augustine O. and Ihianle, Isibor Kennedy, (eds.) Handbook of Research on 5G Networks and Advancements in Computing, Electronics, and Electrical Engineering. IGI Global, USA, pp. 149-164. ISBN 978-1799869924 (doi:10.4018/978-1-7998-6992-4.ch005)

Ijemaru, Gerald K., Ngharamike, Ericmoore T., Oleka, Emmanuel U. and Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 (2021) An energy-efficient model for opportunistic data collection in IoV-enabled SC waste management. Handbook of Research on 5G Networks and Advancements in Computing, Electronics, and Electrical Engineering. IGI Global. ISBN 978-1799869924 (doi:10.4018/978-1-7998-6992-4.ch001)

Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269, Ijemaru, Gerald K., Ang, Kenneth L.-M., Seng, Jasmine K. P. and Yeo, Kenneth S. K. (2021) Unbalanced two-way filtering power splitter for wireless communication systems. Electronics, 10 (5):617. ISSN 2079-9292 (Online) (doi:10.3390/electronics10050617)

2020

Nwajana, Augustine Onyenwe ORCID: https://orcid.org/0000-0001-6591-5269 (2020) Circuit modelling of bandpass/channel filter with microstrip implementation. Indonesian Journal of Electrical Engineering, and Informatics, 8 (4). pp. 696-705. ISSN 2089-3272 (doi:10.11591/ijeei.v8i4.2466)

Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269, Okafor, Patrick U. and Arinze, Stella N. (2020) T-junction diplexer for RF front end of a cellular base station. INTERNATIONAL JOURNAL OF MICROWAVE AND OPTICAL TECHNOLOGY, 15 (6). pp. 537-543. ISSN 1553-0396

Isibor, Ihianle, Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269, Ebenuwa, Solomon Henry, Otuka, Richard I., Owa, Kayode and Orisatoki, Mobolaji O. (2020) A deep learning approach for human activities recognition from multimodal sensing devices. IEEE Access, 8. pp. 179028-179038. ISSN 2169-3536 (Online) (doi:10.1109/ACCESS.2020.3027979)

Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269, Otuka, Richard I., Ebenuwa, Solomon H., Ihianle, Isibor K., Aneke, Sampson O. and Edoh, Aloysius A. (2020) Symmetric 3dB filtering power divider with equal output power ratio for communication systems. In: 2020 International Conference on Electrical, Communication, and Computer Engineering (ICECCE). IEEE. ISBN 978-1728171166 (doi:10.1109/ICECCE49384.2020.9179400)

Nwajana, Augustine / O. ORCID: https://orcid.org/0000-0001-6591-5269 (2020) Dual-Band Microwave Filter for WiMax Application. LAMBERT Academic Publishing, Germany. ISBN 978-6202677585

Nwajana, Augustine Onyenwe ORCID: https://orcid.org/0000-0001-6591-5269 and Yeo, Kenneth Siok (2020) Practical Approach to Substrate Integrated Waveguide (SIW) Diplexer: Emerging Research and Opportunities. Advances in Mechatronics and Mechanical Engineering (AMME), 26 . IGI Global, Hershey, PA, USA. ISBN 978-1799820840

2019

Nwajana, Augustine ORCID: https://orcid.org/0000-0001-6591-5269 (2019) International Journal of Electronics, Communications, and Measurement Engineering (IJECME). IGI Global, Hershey, Pennsylvania, USA.

2018

Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269, Dainkeh, Amadu and Yeo, Kenneth Siok Kiam (2018) Substrate integrated waveguide (SIW) diplexer with novel input/output coupling and no separate junction. Progress In Electromagnetics Research M, 67. pp. 75-84. ISSN 1937-8726 (doi:10.2528/PIERM18021603)

2017

Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269, Dainkeh, Amadu and Yeo, Kenneth S.K. (2017) Substrate integrated waveguide (SIW) bandpass filter with novel microstrip-CPW-SIW input coupling. Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 16 (2). pp. 393-402. ISSN 2179-1074 (Online) (doi:10.1590/2179-10742017v16i2793)

Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 and Yeo, Kenneth S. K. (2017) Multi-coupled resonator microwave diplexer with high isolation. In: 2016 46th European Microwave Conference (EuMC). IEEE, pp. 1167-1170. ISBN 978-2874870439 (doi:10.1109/EuMC.2016.7824556)

Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269, Yeo, Kenneth S. K. and Dainkeh, Amadu (2017) Low cost SIW Chebyshev bandpass filter with new input/output connection. In: 2016 16th Mediterranean Microwave Symposium (MMS). IEEE, pp. 1-4. ISBN 978-1509025862 ISSN 2157-9830 (Online) (doi:10.1109/MMS.2016.7803795)

2016

Nwajana, Augustine Onyenwe ORCID: https://orcid.org/0000-0001-6591-5269 and Yeo, Kenneth Siok Kiam (2016) Microwave diplexer purely based on direct synchronous and asynchronous coupling. Radioengineering, 25 (2). pp. 247-252. ISSN 1210-2512 (Print), 1805-9600 (Online) (doi:10.13164/re.2016.0247)

Dainkeh, A., Nwajana, A.O. ORCID: https://orcid.org/0000-0001-6591-5269 and Yeo, K.S.K. (2016) Filtered power splitter using microstrip square open loop resonators. Progress In Electromagnetics Research C, 64. pp. 133-140. ISSN 1937-8718 (doi:10.2528/PIERC16042005)

2013

Yeo, Kenneth S. K. and Nwajana, Augustine O. ORCID: https://orcid.org/0000-0001-6591-5269 (2013) A novel microstrip dual-band bandpass filter using dual-mode square patch resonators. Progress In Electromagnetics Research C, 36. pp. 233-247. ISSN 1937-8718 (doi:10.2528/PIERC12120312)