OVERALL PUBLICATIONS

INDEX JOURNALS:

• 1. Hussam Keriee, Mohamad Kamal A Rahim, Osman Ayop, Nawres Abbas Nayyef, "Beamforming networks using the Nolen matrix for 5G applications," Waves in Random and Complex Media, pp 1-21, 10 Feb 23.

  2. Hussam Hamid Keriee, Mohamad Kamal A Rahim, Nawres Abbas Nayyef, Osman Ayop, Ahmed Jamal Abdullah Al-Gburi "Compact Wideband Metamaterial Quadrature Coupler for 5G Beamforming Applications," Przeglad Elektrotechniczny, vol. 93, issue 3, 1 March 2023.

  3. Muataz W Almeshehe, Noor Asniza Murad, Mohamad Kamal A Rahim, Osman Ayop, Farid Zubir, Mohamad Zoinol A Abd Aziz, Mohamed N Osman, HA Majid, "Low loss waveguide-based Butler matrix with iris coupling control method for millimeterwave applications," Waves in Random and Complex Media, vol 33, issue 2, pp 372-392, 4 March 2023.

  4. Muhammad Amir Haziq Kamarusshahrin, Mohamad Kamal A Rahim, Muhammad Naeem Iqbal, Noor Asniza Murad, Noor Asmawati Samsuri, Mohd Fairus Mohd Yusoff, Farid Zubir, Mohamad Rijal Hamid, Osman Ayop, "4G Signal Strength Measurement and Simulation for Outdoor Environment at 1.8 GHz and 2.6 GHz," ELEKTRIKA-Journal of Electrical Engineering, vol 22, issue 1, pp 70-74, 28 April 2023.

  5. Norsaidah Muhamad Nadzir, Mohamed Himdi, Mohamad Kamal A. Rahim, Noor Asniza Murad, Osman Ayop, Olivier Lafond, "Multi-Beam Luneburg Lens with Reduced Size Patch Antenna," Electronics, vol 12, issue 14, pp 3028, 10 July 2023.

  6. Zulbirri Faizol, Farid Zubir, Norhafezaidi Mat Saman, Mohd Hafizi Ahmad, Mohamad Kamal A Rahim, Osman Ayop, Muzammil Jusoh, Huda A Majid, Zubaida Yusoff, "Detection Method of Partial Discharge on Transformer and Gas-Insulated Switchgear: A Review," Applied Sciences, vol 13, issue 17, 9605, 24 August 2023.

  7. Ba-Saleh Ammar Nabil Salem, Raimi Dewan, Osman Ayop, Amirudin Ibrahim, "Read Range Investigation of RFID Tag on Human Chest," ELEKTRIKA-Journal of Electrical Engineering, Vol 22, issue 2, pp 47-55, 28 August 2023.

  8. Nur Biha Mohamed Nafis, Mohamed Himdi, Mohamad Kamal A Rahim, Osman Ayop, Raimi Dewan, “Optically Transparent Tri-Wideband Mosaic Frequency Selective Surface with Low Cross-Polarisation,” Materials, vol. 15, issue. 2, pp. 622, Jan 2022.

  9. BAF Esmail, MKA Rahim, HA Majid, NA Murad, NA Samsuri, O Ayop, “Deflected beam pattern through reconfigurable metamaterial structure at 3.5 GHz for 5G applications,” Waves in Random and Complex Media, 1-24, 29 March 2022.

  10. MH Rosmin, MKA Rahim, NS Yaziz, MN Iqbal, O Ayop, “Slot implementation on second iteration of fractal log periodic dipole antenna for UHF band application,” Journal of Physics: Conference Series 2250 (1), 012004. 1 April 2022.

  11. MKA Rahim, BAF Esmail, NSM Yaziz, NA Samsuri, NA Murad, O Ayop, “Flexible Rectenna for Energy Harvesting System,” ELEKTRIKA-Journal of Electrical Engineering 21 (1), 73-77, 20 April 2022.

  12. H Keriee, MKA Rahim, O Ayop, NA Nayyef, M Ghanim, OR Alobaidi, “A Slotted Planar Antenna for 5G Applications,” ELEKTRIKA-Journal of Electrical Engineering 21 (2), 11-14, 1 Sep 2022.

  13. M Almeshehe, N Murad, M Rahim, O Ayop, N Samsuri, MA Aziz, M Osman, “Surface roughness impact on the performance of the 3D metal printed waveguide coupler at millimeterwave band,” Engineering Science and Technology, an International Journal 35, 101129, 1 Nov 2022.

  14. Nur Biha Mohamed Nafis, Mohamed Himdi, Mohamad Kamal A Rahim, Osman Ayop, Raimi Dewan, “Optically Transparent Tri-Wideband Mosaic Frequency Selective Surface with Low Cross-Polarisation,” Materials, vol. 15, issue. 2, pp. 622, Jan 2022.

  15. BAF Esmail, MKA Rahim, HA Majid, NA Murad, NA Samsuri, O Ayop, “Deflected beam pattern through reconfigurable metamaterial structure at 3.5 GHz for 5G applications,” Waves in Random and Complex Media, 1-24, 29 March 2022.

  16. Norsaidah Muhamad Nadzir, Mohamad Kamal A Rahim, Noor Asniza Murad, Mohamed Himdi, Osman Ayop, “Circular Complementary Split Ring Resonator Rotation for Linear Array Millimeter Wave Microstrip Patch Antenna,” ELEKTRIKA-Journal of Electrical Engineering, vol. 20, issue 3, pp. 43−47, 27 Dec 2021.

  17. Muhammad Hafeez Rosmin, Mohamad Kamal A Rahim, Nur Syahirah Yaziz, Muhammad Naeem Iqbal, Osman Ayop, Muhammad Amir Haziq Kamarusshahrin, “Second Iteration of Slotted Fractal Log Periodic Dipole Antenna for UHF Digital TV Band Application,” ELEKTRIKA-Journal of Electrical Engineering, vol. 20, issue. 3, pp. 48−52, 27 Dec 2021.

  18. Hussam Keriee, Mohamad Kamal A Rahim, Osman Ayop, Nawres Abbas Nayyef, Ahmed Jamal Abdullah Al-Gburi, BAF Esmail, Syed Muzahir Abbas, “Wideband planar microstrip antenna based on split ring resonator for 5G mobile applications,” Przeglad Elektrotechniczny 97 (11), 190-194, 2021.

  19. Farid Zubir, Peter Gardner, Mohamad Kamal A Rahim, Osman Ayop, Noor Asmawati Samsuri, “Analytical Solution of Amplifier-Antenna System’s Impedance Matching Requirement for Reliable Microwave Transmitter,” IEEE Access, vol. 8, pp. 182640-182662, 8 Oct 2020.

  20. Nur Biha Mohamed Nafis, Mohamad Kamal A Rahim, Osman Ayop, Huda A Majid, Sunti Tuntrakool, “Characterization of the koch fractal embedded hexagonal loop frequency selective surface structure for X-band application” Indonesian Journal of Electrical Engineering and Computer Science, vol. 20, issue. 2, pp. 878-886, Nov 2020.

  21. Siti Nurzulaiha Isa, Osman Ayop, Abu Sahmah Mohd Supa’at, Mohammad Kamal A Rahim, Noor Asniza Murad, Farid Zubir, Huda A Majid, “Effects of bending on a flexible metamaterial absorber,” BEEI (Bulletin of Electrical Engineering and Informatics), vol. 9, Issue 6, pp. 2436−2442, Dec 2020.

  22. MG Mustapha, MKA Rahim, NA Murad, O Ayop, S Tuntrakool, MA Baba, AY Iliyasu, “Polarization insensitive switchable metamaterial absorber/reflector for X-band applications” BEEI (Bulletin of Electrical Engineering and Informatics), vol. 9, Issue 6, pp. 2443−2448, Dec 2020.

  23. Siti Nurzulaiha Isa, Osman Ayop, Farid Zubir, Noor Asniza Murad, and Mohamad Kamal A. Rahim, “Floral structure for textile-based metamaterial absorber,” IJEEI (Indonesian Journal of Electrical Engineering Informatics), vol. 7, Issue 2, 374, pp. 375−381, June 2019.

  24. Murtala Aminu-Baba, Mohammad Kamal A Rahim, Farid Zubir, Adamu Y Iliyasu, Mohd Fairus Mohd Yusoff, KI Jahun, and Osman Ayop, “Compact Patch MIMO Antenna With Low Mutual Coupling For WLAN Applications,” ELEKTRIKA (Journal of Electrical Engineering), vol. 18, Issue 1, 374, pp. 375−381, April 2019.

  25. MM Gajibo, MKA Rahim, NA Murad, O Ayop, HA Majid, M Aminu-Baba, R Dewan, “Entire X-band region metamaterial absorber and reflector with a microstrip patch switch for X-band applications,” Indonesian Journal of Electrical Engineering and Computer Science, vol. 15, Issue 3, pp. 1452−1457, 2019.

  26. BAF Esmail, HA Majid, ZZ Abidin, SH Dahlan, MKA Rahim, O Ayop, “New metamaterial structure with reconfigurable refractive index at 5G candidate band,” J Optoelectron Adv M, vol. 21, pp. 101-107, 2019.

  27. MM Gajibo, Mohamad Kamal A. Rahim, Noor Asniza Murad, Osman Ayop, and Huda A. Majid “Switchable Wideband Metamaterial Absorber and AMC reflector for X-band Applications and Operations,” TELKOMNIKA (Telecommunication Computing Electronics and Control), vol. 16, Issue 4, 374, pp. 1−7, 1 August 2018.

  28. SU Khan, MKA Rahim, NA Murad, F Zubir, O Ayop, MFM Yusoff “Detection of the Faulty Sensors on Basis of the Pattern Using Symmetrical Structure of Linear Array Antenna.,” Applied Computational Electromagnetics Society Journal 32 (4), 2017

  29. MM Gajibo, MKA Rahim, NA Murad, O Ayop, BD Bala, HA Majid, MFM Yusoff “X-band Operations Metamaterial Absorber with Extended Circular Ring Topology for Size Reduction,” Indonesian Journal of Electrical Engineering and Computer Science 6 (1), 180-184, 2017

  30. MAM Shaufi, HA Majid, ZZ Abidin, SH Dahlan, MKA Rahim, OB Ayop “Compact Digital Television (DTV) Antenna for Indoor Usage,” International Journal of Electrical and Computer Engineering (IJECE) 7 (2), 784-790, 2017

  31. Osman Ayop, Mohamad Kamal A. Rahim, Noor Asniza Murad, Noor Asmawati Samsuri, Farid Zubir, and Huda A. Majid “Dual-band metamaterial perfect absorber with nearly polarization-independent,” Applied Physic A, vol. 123, Issue 1, 374, pp. 63, January 2017

  32. Osman Ayop, Mohamad Kamal A. Rahim, Noor Asniza Murad, and Noor Asmawati Samsuri “Dual-resonant polarization-independent and wide-angle metamaterial absorber in X-band frequency,” Applied Physic A, vol. 112, Issue 4, 374, pp. 1−7, 14 March 2016

  33. Osman Ayop, Mohamad Kamal A. Rahim, Noor Asniza Murad, and Noor Asmawati Samsuri “Wideband polarization-insensitive metamaterial absorber with perfect dual resonances,” Applied Physic A, vol. 122, Issue 4, 316, pp. 1-7, 8 March 2016

  34. H.A.Majid, M. K. A. Rahim, M. R. Hamid, N.A.Samsuri, N.A.Murad, M.F.M.Yusof and O. Ayop, 'Reconfigurable Notched Wideband Antenna Using EBG Stucture' Microwave Optical Technology Letter, Vol 57, Issue 2, pp 497-501, Feb 2015 

  35. H. A. Majid, M. K. Abd Rahim, M. R. Hamid, M. F. M. Yusoff, N. A. Murad, N. A. Samsuri, O. B. Ayop, and R. Dewan, 'Wideband Antenna with Reconfigurable Band Notched Using EBG Structure', Progress in Electromagnetic Research Letter PIER L,vol 54, pp 7-13, 2015 

  36. Osman Ayop, Mohamad Kamal A. Rahim and Noor Asniza Murad, 'Polarization-Independent Metamaterial Absorber for Single band and Multi-band frequency', Jurnal teknologi, Vol. 77, No 10, pp 99-106, 2015

  37. Osman Ayop, Mohamad K.A.Rahim, Noor Asniza Murad, Noor A Samsuri and Raimi Dewan, "Triple band circular ring-shaped metamaterial absorber for X-band applications' Progress in Electromagnetic Research M (PIERM), Vol 39, pp-65-75, 2014 (Index Scopus). 

  38. H. A. Majid, M. K. A. Rahim, M. R. Hamid and O. Ayop, 'Reconfigurable wideband to narrowband antenna using tunable EBG structure', Applied Pyhsics A, Volume 117, Issue 2, pp 657-661, Nov 2014 

  39. Osman Ayop, Mohamad Kamal A Rahim, Noor Asniza Murad, Huda A Majid, 'Metamaterial Absorberbased on circular ring structure with and without copper lines', Applied Physics A, Volume 117, Issue 2, pp 651-656, Nov 2014

  40. M. K. A. Rahim, T. Masri, H. A. Majid, O. Ayop, F. Zubir, 'Design and Analysis of Ultra Wide Band Planar Monopole Antenna' WSEAS Transaction in   Communication, Issue 7, Vol 10, pp 212 -221, July 2011

  41. M. K. A. Rahim, M. N. A. Karim, F. Zubir, O. Ayop, N. A. Samsuri, ‘Second iteration Fractal Koch Planar Log PeriodicAntenna Design’, Microwave Optical Technology Letters, Volume 53, Issue 8, pp 1869 – 1875, August 2011

  42. F. Zubir, M. K. A. Rahim, O. Ayop, A. Wahid, H. A. Majid, ‘Design and Analysis of Microstrip Reflectarray Antenna with Minkowski Shape Radiating Element’, Progress in Electromagnetic Research B, volume 24, pp 317 – 331, 2010

  43. M. Abu, M. K. A. Rahim, O. Ayop, F.Zubir, ‘Triple band printed dipole antenna with single band AMC-HIS’, Progress in Electromagnetic Research B, vol 20, pp 225-244, 2010

  44. T. Masri, M. K. A. Rahim, O. Ayop, F. Zubir, N. A. Samsuri, H.A.Majid, ‘Electromagntic Band gap structure incorporate with dual band microstrip antenna array’, Progress in Electromagnetic Research M, vol 11, pp 111-122, 2010

  45. M. N. A. Karim, M. K. A. Rahim, H. A. Majid, M.Abu, O. Ayop and F. Zubir, ‘Log periodic Fractal Koch antenna for UHF band application’, Progress in Electromagnetic Research PIER , vol 100, pp 201-218, 2010

  46. T. Masri, M. K. A. Rahim, H. A. Majid, O. Ayop, F.Zubir and M. N. A. Karim, ‘Electromagnetic Band Gap structure for Planar Ultra Wide band antenna’, Journal of Electromagnetic Waves and Application, vol. 24, pp 229 – 239, 2010.

BOOK CHAPTER:

1. O Ayop, MKA Rahim, NA Murad, NA Samsuri, 'Double Layer Polarization Insensitive Metamaterial Absorber with Dual Resonances',Theory and Applications of Applied Electromagnetics, pp 231-238, 2015

2. Osman Bin Ayop, Ameruddin Bahrom, "Slotted patch EBG structure incorporated with microstrip antenna array’, Advanced Antenna Technology Design - Mohamad Kamal A. rahim (1st Edition)" Penerbit UTM, 2007.

CONFERENCES / PROCEEDING PUBLICATIONS:

1. A Azzawi, Mohamad Kamal A Rahim, Osman Ayop, Norsaidah Muhamad Nadzir, "Microstrip series feed array antennas for millimeter wave 5G applications," AIP Conference Proceedings, vol 2795, issue 1, 25 May 2023.

2. Osman Ayop, Mohamad Kamal A Rahim, Noor Asniza Murad, Mohamad Fakrie Mohd Ali, "Dual-Directional Polarization Insensitive Metamaterial Absorber based on Modified Circular Ring Structure," 2022 13th International Conference on Information and Communication Technology Convergence (ICTC), 375-379, 19 Oct 2022.

3. Moham Fakrie Mohamad Ali, Osman Ayop, Mohamad Kamal A Rahim, Noor Asniza Murad, "Ribbon-Shaped Antenna Design for UHF RFID Tag using Transparency Paper Material," 2022 IEEE International RF and Microwave Conference (RFM), pp 1-3, 19 Dec 2022.

4. Nisaa Yasmin Nor Izuddin, Osman Ayop, Farid Zubir, Norsaidah Muhamad Nadzir, "Harmonic suppression of monopole wideband antenna with DGS for operating frequency at 3.5 GHz," 2022 IEEE International RF and Microwave Conference (RFM), pp 1-3, 19 Dec 2022.

5. Norsaidah Muhamad Nadzir, Mohamad Kamal A Rahim, Noor Asniza Murad, Osman Ayop, Mohamed Himdi, “Millimeter Wave Linear Array Microstrip Antenna with Circular CSRR,” 2021 International Symposium on Antennas and Propagation (ISAP), pp. 1−2, 19 Oct 2021.

6. Hussam Keriee, Mohamad Kamal A Rahim, Nawres Abbas Nayyef, Osman Ayop, “Wideband Planar Microstrip Antenna Inspired by Metamaterial for Mid Band 5G Applications,” 2021 International Symposium on Antennas and Propagation (ISAP), pp. 1−2, 19 Oct 2021.

7. Bashar AF Esmail, Mohamad KA Rahim, Noor Asmawati Samsuri, O Ayop, Noor Asniza Murad, Huda A Majid, Hussam Keriee, Fayad Ghawbar, “Design of compact dual-port super wideband MIMO antennas for communication systems,” 2021 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE), 1-4, 20 Dec 2021.

8. AM Al Azzawi, MKA Rahim, O Ayop, YM Hussein, “Substrate Integrated Waveguide Series Feed Patch Antenna at Millimeter wave for 5G application,” 2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI), 841-842, 4 Dec 2021.

9. Noor Asniza Murad, Muataz Watheq Almeshehe, Osman Ayop, Mohamad Kamal A Rahim, “Wideband Metamaterial Substrate Integrated Waveguide Antenna for Millimeterwave Applications,” 2020 IEEE International RF and Microwave Conference (RFM), pp. 1−4, Dec 2020.

10. Voon Sze Yii, Leong Guang Ye, DABS Hizal, AJFB Ayub, Osman Bin Ayop, "Ske Facility Booking System," Proceedings of Electrical Engineering Capstone Showcase (EECS 2020) Agile Facility Management System, pp 45-65, 2020.

11. MW Sabri, NA Murad, MKA Rahim, O Ayop, “3D Printed Waveguide Phase Shifter for Butler Matrix Network,” 2019 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE), pp. 1−5, 2019.

12. MKA Rahim, MR Hamid, NA Samsuri, NA Murad, F Zubir, O Ayop, “Antenna with Artificial Magnetic Conductor for Wireless Application,” 2019 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE), pp. 1−5, 2019.

13. Muhammad Muhammad, Naeem Iqbal, Mohd Fairus Mohd Yusoff, Mohammad Kamal A Rahim, Mohamad Rijal Hamid, Farid Zubir, Osman Ayop, Zaharah Johari, “Wideband Multi-layer Frequency Selective Surface Based Transmitarray Unit Cell for Satellite Communication Applications,” 2019 International Symposium on Antennas and Propagation (ISAP), pp. 1−3, 2019.

14. NBM Nafis, MKA Rahim, O Ayop, F Zubir, HA Majid, “A Comparison of Various Double Loops Frequency Selective Surfaces in terms of Angular Stability,” 2019 International Symposium on Antennas and Propagation (ISAP), pp. 1−4, 2019.

15. NM Nadzir, Mohamad Kamal A. Rahim, NA Samsuri, F Zubir, Noor Osman Ayop, and HA Majid, “UHF RFID Tag Using Polycarbonate Material,” APCAP (2018 IEEE Asia-Pacific Conference on Antenna and Propagation), pp. 530−531, 5-8 August 2018.

16. M Aminu-Baba, Mohamad Kamal A. Rahim, F Zubir, MFM Yusoff, NA Samsuri, and O Ayop, “Planar Monopole Antenna with Hexagonal Split Ring Resonators,” APCAP (2018 IEEE Asia-Pacific Conference on Antenna and Propagation), pp. 1−2, 5-8 August 2018.

17. AB Shallah, F Zubir, MKA Rahim, O Ayop, “Microstrip reflectarray using second iteration Minkowski-like radiating element,” 2017 IEEE Asia Pacific Microwave Conference (APMC), Kuala Lumpur, Malaysia, 13-16 November 2017, pp. 176-179. 

18. MM Gajibo, MKA Rahim, NA Murad, O Ayop, HA Majid, “A Single and dual band metamaterial switchable absorber or reflector,” 2017 IEEE Asia Pacific Microwave Conference (APMC), Kuala Lumpur, Malaysia, 13-16 November 2017, pp. 509-512. 

19. BAF Esmail, HA Majid, ZZ Abidin, SH Dahlan, O Ayop, MKA Rahim, “Refractive index reconfigurable metamaterial structure at 28 GHz frequency range,” 2017 IEEE Asia Pacific Microwave Conference (APMC), Kuala Lumpur, Malaysia, 13-16 November 2017, pp. 1325-1328.

20. MA Abdullah, MKA Rahim, NA Samsuri, O Ayop, “On-body transmission for dual-band antenna incorporated with dual-band AMC waveguide jacket,” 2017 International Symposium on Antennas and Propagation (ISAP), Phuket, Thailand, 30 November - 2 December 2017, pp. 1-2.

21. Mohamad Aasyraaf Mohd Shaufi, Huda A. Majid, Samsul Haimi Dahlan, Zuhairiah Zainal Abidin, Mohamad Kamal A. Rahim, and O. Ayop, “Compact digital television (DTV) antenna for indoor usage,” 2016 International Conference on Electrical Electronics Communication and Control Engineering (ICEECC 2016), UTM Johor Bahru, Malaysia, 18-19 December 2016.

22. M.M. Gajibo, M. K. A. Rahim, N. A. Murad, O. Ayop, B. D. Bala, “X-band operation metamaterial absorber with extended circular ring topology for size reduction,” 2016 International Conference on Electrical Electronics Communication and Control Engineering (ICEECC 2016), UTM Johor Bahru, Malaysia, 18-19 December 2016.

23. Osman Ayop, Mohamad Kamal A. Rahim, Noor Asniza Murad, and Noor Asmawati Samsuri, “Dual band metamaterial perfect absorber with nearly polarization-independent,” META’16, the 7th International Conference on Metamaterials, Photonic Crystals, and Plasmonics, Torremolinos Malaga Spain, 25-28 July 2016.

24. Osman Ayop, Mohamad Kamal A. Rahim, Noor Asniza Murad, and Noor Asmawati Samsuri “Wideband metamaterial absorber with polarization-dependent operation,” META’16, the 7th International Conference on Metamaterials, Photonic Crystals, and Plasmonics, Torremolinos Malaga Spain, 25-28 July 2016

25. O. Ayop, M. K. A. Rahim, N.A. Murad and N.A Samsuri, “Dual-directional polarization insensitive multiband metamaterial absorber”, 2015 IEEE International RF and Microwave Conference (RFM 2015), Kuching, Malaysia, 14-16 Dec 2015.

26. O. Ayop, M. K. A. Rahim, N.A. Murad and N.A Samsuri, “Dual resonant circular ring-shaped metamaterial absorber with wide operating angle”, International Symposium on Antennas and Propagation (ISAP 2015), Tasmania, Australia, 9-12 Nov 2015. 

27. Osman Ayop, Mohamad Kamal A. Rahim, and Noor Asniza Murad, “Wideband polarization-insensitive metamaterial absorber with perfect dual resonances,” META’15, the 6thInternational Conference on Metamaterials, Photonic Crystals, and Plasmonics, New York USA, 4-7 Aug. 2015.

28. Osman Ayop, Mohamad Kamal A. Rahim, and Noor Asniza Murad “Dual-resonant polarization-independent and wide-angle metamaterial absorber in X-band frequency,”META’15, the 6h International Conference on Metamaterials, Photonic Crystals, and Plasmonics, New York USA, 4-7 Aug. 2015.

29. O Ayop, MKA Rahim, NA Murad, NA Samsuri, "Dual band polarization insensitive and wide angle circular ring metamaterial absorber", 8th European Conference on Antenna and Propagation (Eucap 2014),pp 955-957, Den Haag, Holland, 2014

30. HA Majid, MKA Rahim, O Ayop, MR Hamid, NA Murad, NA Samsuri, "Frequency reconfigurable wideband monopole antenna using EBG structures", 8th European Conference on Antenna and Propagation (Eucap 2014),pp 1906-1908, Den Haag, Holland, 2014

31. O. Ayop, M. K. A. Rahim, N.A. Murad and N.A Samsuri, 'Dual band Polarization Insensitive Metamaterial Absorber in X-band', International Symposium on Antennas and Propagation (ISAP 2014),Kaohsiung, Taiwan, 2-5 Dec 2014

32. Osman Ayop, Mohamad Kamal A Rahim and Noor Asniza Murad, 'Polarization Insensitive and wide operating angle metamaterial absorber at X-band', 2014 IEEE Asia-Pacific Conference on Applied Electromagnetic (APACE 2014), Johor Bahru Johor, pp. 245-249, 8-9 Dec 2014. 

33. HA Majid, MKA Rahim, MR Hamid, NA Murad, NA Samsuri, O Ayop, 'Reconfigurable band notch UWB antenna using EBG structure', 2014 IEEE Asia-Pacific Conference on Applied Electromagnetic (APACE 2014), Johor Bahru Johor, pp. 268-270, 8-9 Dec 2014. 

34. Osman Ayop, Mohamad Kamal A. Rahim, Noor Asniza Murad, and Huda A. Majid, “Metamaterial absorber based on circular ring structure with and without copper lines,” META’14, the 5th International Conference on Metamaterials, Photonic Crystals, and Plasmonics, NTU Singapore, 20-23 May. 2014.

35. Kamilia Kamardin, Mohamad Kamal A.Rahim,Peter S Hall, Noor Asmawati Samsuri, Mohd Ezwan Jalil, Osman Ayop, "Textile Artificial Magnetic Conductor Waveguide sheet with monopole Antennas for body centric Communication", 7th European Conference on Antenna and propagation (Eucap 2013), Gothenburg, Sweden, 8 – 12 April 2013.

36. Osman Ayop, Mohamad Kamal A.Rahim, Noor Asniza Murad, "Double layer circular ring metamaterial absorber for dual directional application at 10 GHz" 2013 IEEE International RF and Microwave Conference (RFM2013), Bayview Beach Resort, Penang, 9-11 Dec 2013

37. Siti fatimah Jainal, T.Wakabayashi, Osman Ayop and Mohamad Kamal A.Rahim, "A UWB Planar antenna comprising a single slot elliptical element with band notch characteristics" 2013 IEEE International RF and Microwave Conference (RFM2013), Bayview Beach Resort, Penang, 9-11 Dec 2013. 

38. Osman Ayop, Mohamad Kamal A. Rahim, Noor Asniza Murad, “Wide angle and polarization insensitive circular ring metamaterial absorber at 10 GHz”, 2013 International Symposium on Antennas and Propagation (ISAP 2013), Nanjing China, Oct. 23-25, 2013

39. Ayop, O.; Rahim, M.K.A.; Murad, N.A., "A parametric study of microwave absorber based on metamaterial structure," Applied Electromagnetics (APACE), 2012 IEEE Asia-Pacific Conference on , vol., no., pp.234,237, 11-13 Dec. 2012 

40. M. E. Jalil, M. K. A. Rahim, N.A. Samsuri, O. Ayop, M. A. Abdullah, M.F.Ismail "Investigation the performance of Fractal Koch Multiband Textile Antenna for On-Body Measurement", The Asia Pacific Microwave Conference 2012 (APMC 2012), Kaohsiung Taiwan, 4-7 Dec 2012. 

41. Ayop, O.; Rahim, M. K A; Murad, N.A., "Reconfigurable frequency using electromagnetic band gap structures for single band and wideband," Antennas and Propagation (ISAP), 2012 International Symposium on , vol., no., pp.1192,1195, Oct. 29 2012 - Nov. 2 2012 

42. ME Jalil, MKA Rahim, MA Abdullah, O Ayop, "Compact CPW-fed ultra-wideband (UWB) antenna using denim textile material," Antennas and Propagation (ISAP), 2012 International Symposium on , vol., no., pp.1192,1195, Oct. 29 2012 - Nov. 2 2012

43. M. K. A Rahim, G. Mansor, T. Masri and O. Ayop, "Design and Analysis of Coplanar Waveguide Fed Microstrip Patch Antenna", 2011 International Symposium on Antennas and propagation, Jeju Korea, 25-28 October 2011

44. O. Ayop, M. K. A. Rahim, "Analysis of Mushroom like EBG Structure using suspended Transmission Line Technique", 2011 IEEE International RF and Microwave Conference, Seremban, N. Sembilan, 12-14 Dec 2011. 

45. M. Abu, M. K. A Rahim, O. Ayop and F. Zubir, “Design of Triple-band Dipole-type Antenna with Dual-band Artificial Magnetic Conductor Structure”, 5th European Conference on Antenna and propagation (Eucap 2011), Rome, Italy, 11 – 15 April 2011.

46. M. F. Ismail, M. K. A Rahim, F. Zubir and O. Ayop, “Log-Periodic Antenna With Tunable Frequency”, 5th European Conference on Antenna and propagation (Eucap 2011), Rome, Italy, 11 – 15 April 2011.

47. O. Ayop, M. K. A Rahim, M.R.Kamaruddin, S.H.S.Yusof and S.K.S.Yusof “Comparative Study of Different Shape of periodic Patch Electromagnetic Band Gap Structure for Planar antenna application”, International Symposium on Antennas and Propagation (ISAP 2010), Macau, China, 23-26 November 2010.

48. M. K. A. Rahim, T. Masri, O. Ayop and F. Zubir “Band Rejection Technique using Electromagnetic Band Gap structure”, Indonesia-Malaysia Microwave Antenna Conference  (immac 2010), Jakarta,Indonesia 11-12 June, 2010.

49. O. Ayop, M. K. A. Rahim “Comparative study of Different shape of single Patch Electromagnetic Band Gap Structures for Planar Antenna application”, Indonesia-Malaysia Microwave Antenna Conference  (immac 2010), Jakarta, Indonesia 11-12 June, 2010.

50. Kamilia Kamardin, Mohamad Kamal A.Rahim, Osman Ayop, “Compact Multisize Circular Patch EBG structure for wide stopband circuits”, Indonesia-Malaysia Microwave Antenna Conference  (immac 2010), Jakarta,Indonesia 11-12 June, 2010.

51. Osman Ayop, Mohamad Kamal A Rahim, Muhammad Ramlee Kamarudin, Mohamad Zoinol Abd Aziz, Maisarah Abu, “Dual band Electromagnetic Band gap structure Incorporate with Ultra Wide band antenna”, 4th Europen Conference on Antenna and propagation (Eucap 2010), Barcelona, 12 – 16 April 2010.

52. Osman Ayop, Mohamad Kamal A Rahim, Kamilia Kamardin, ‘Parametric Study on Mushroom like EBG structure using method of transmission line’,2009 IEEE International Conference on Antenna, propagation and Systems (INAS 2009), Johor Bahru Malaysia, 3- 5 Dec 2009.

53. O. Ayop, M. K. A Rahim,T Masri, “Ultra Wide band antenna design”, International Symposium on Antennas and Propagation (ISAP 2009), Bangkok, Thailand, 20-23 October 2009.

54. Mohamad Kamal A Rahim, Osman Ayop, Thelaha Masri, Maisarah Abu, “Slotted Patch Dual band Electromagnetic band gap design”, 3rd Europen Conference on Antenna and propagation (Eucap 2009), Berlin, 23 – 27 March 2009 

55. Maisarah Abu, Mohamad Kamal A Rahim, Osman Ayop, “Slotted e-shape Antenna Design for dual frequency operation”, 3rd European Conference on Antenna and propagation (Eucap 2009), Berlin, 23 – 27 March 2009 

56. Mohamad Kamal A Rahim, Huda A Majid, Thelaha Masri, Osman Ayop, “Left Handed Metamaterial Incorporated with microstrip antenna”, International Symposium on Antennas and Propagation (ISAP 2008), Taiwan, 27-30 October 2008.

57. O. Ayop, M. K. A. Rahim, T. Masri. 2008. “Rectangular Ring Electromagnetic Band Gap Structure Operating at 2.4 GHz Frequency”, International Workshop on Antenna Technology 2008 – Small Antennas and Novel Metamaterial (iWAT 2008), Jepun, 4-6th March 2008.

58. Mohamad Kamal A. Rahim, Mohd Nazri A. Karim, Thelaha Masri, Osman Ayop, Huda Majid, “Dielectric Resonator Antenna Array at 2.4 GHz”, 2008 Asia Pacific Microwave Conference (APMC 2008), 16 - 20 Dec 2008, Macao China.

59. Mohamad Kamal A. Rahim, Mohd Nazri A. Karim, Thelaha Masri, Osman Ayop, Huda Majid, “Circular Polarization Array Antenna”, 2008 Asia Pacific Microwave Conference (APMC 2008), 16 - 20 Dec 2008. Macao, China

60. Mohamad Kamal A. Rahim, Mohd Nazri A. Karim, Thelaha Masri, Osman Ayop, Huda Majid, “Ultra Wide band Antenna Design”, 2008 Asia Pacific Microwave Conference (APMC 2008), 16 - 20 Dec 2008. Macao China.

61. T. Masri, M. K. A. Rahim, O. Ayop, “Dual Band Microstrip Array Antenna Radiation Characteristic Enhancemenet via Novel Band rejection technique using EBG”, 2008 Asia Pacific Microwave Conference (APMC 2008), 16 - 20 Dec 2008

62. T. Masri, M. K. A. Rahim, F. Zubir, O. Ayop, M.N.A.Karim, H.A.Majid, “Microstrip Antenna Array gain enhancement via EBG structure’, 2008 Conference on Radio and Microwave (RFM 2008), pp:121-125, 2 - 4 Dec 2008

63. Mohamad Kamal A.Rahim, Mohd Nazif Mat Salleh, Osman Ayop, Thelaha Masri, “Switch Beam Antenna Design", 2008 Conference on Radio and Microwave (RFM 2008), pp. 121-125, 2- 4 Dec 2008.

64. Mohd Nazri A Karim, Mohamad Kamal A.Rahim, Osman Ayop, Thelaha Masri “Analysis of Fractal Koch Dipole Antenna for UHF band application", 2008 Conference on Radio and Microwave (RFM 2008) 2- 4 Dec 2008.

65. Mohd Nazri A Karim, Mohamad Kamal A.Rahim, Osman Ayop, Thelaha Masri “Fractal Koch Dipole antenna for Digital TV application’, 2008 Conference on Radio and Microwave (RFM 2008) 2- 4 Dec 2008. PJ Selangor.

66. Osman Ayop, Mohamad Kamal A.Rahim, Thelaha Masri “A dual band gap slotted patch electromagnetic band gap for dual band microstrip antenna", 2008 Conference on Radio and Microwave (RFM 2008) 2- 4 Dec 2008. PJ Selangor.

67. Mohd Nazri A Karim, Mohamad Kamal A.Rahim, Osman Ayop, Thelaha Masri , “Broadband Fractal Koch Antenna”, 6th student Conference on Research and Development (SCORED 2008), 26-27 November 2008, Johor Bahru, Malaysia.

68. MKA Rahim, O Ayop, M Thelaha, A Nazri, A Huda, “Electromagnetic band gap (EBG) structure in microwave device design”, Unpublished Research Votes, 2008.

69. S M Idrus, EF Mohamed, S Hashim, O Ayop, “Radio over fiber communication systems: development and future trend”, Penerbit UTM, 2008

70. S M Idrus, O Ayop, S Hashim, M Aon, E Fathi, “Comparative study between fiber optic and copper in communication link”, Penerbit UTM, 2008

71. HA Majid, MKA Rahim, T Masri, O Ayop, Thelaha Masri , “Left-Handed Metamaterial Incorporated with Microstrip Antenna at 6 GHz”, 2008.

72. O. Ayop, M.K. A Rahim, T Masri, M.Z.A. Abdul Aziz, "Modified Slotted Patch EBG structure for an antenna application’, European Conference on Antenna and Propagation (EuCAP 2007)" 11th – 16th November 2007, Edinburgh U.K.

73. Mohamad Kamal A. Rahim, Mohd Nazri A Karim, Thelaha Masri, Osman Ayop "Antenna Array at 2.4 GHz for Wireless System using point to point communication", 2007 Asia-Pacific Conference on Applied Electromagnetics (APACE 2007) 4th – 6th December 2007 , Melaka, Malaysia.

74. Osman Ayop, Mohamad Kamal A.Rahim, Thelaha Masri, ‘Planar Dipole antenna with and without circular parasitic element’, 2007 Asia-Pacific Conference on Applied Electromagnetics (APACE 2007) 4th – 6th December 2007 , Melaka, Malaysia.

75. Osman Ayop, Mohamad Kamal A.Rahim, Thelaha Masri, ‘Dual Band EBG Structure’, 2007 Asia-Pacific Conference on Applied Electromagnetics (APACE   2007) 4th – 6th December 2007, Melaka, Malaysia.

76. O. Ayop, M. K. A. Rahim, T. Masri, M. N. A. Karim,  ‘Modified slotted patch electromagnetic band gap for antenna array application’, Asia Pacific Microwave Conference 2007 (APMC 2007) 12th – 14th December 2007 , Bangkok, Thailand.