Safa Nassr Nafea

@coie-nahrain.edu.iq

Systems Engineering Department / College of Information Engineering
Al-Nahrain University

Safa Nassr Nafea


                     Download Compact PDF  
https://researchid.co/safanafea

RESEARCH INTERESTS

Communication
5

Scopus Publications

50

Scholar Citations

4

Scholar h-index

2

Scholar i10-index

Scopus Publications

  • High – gain and wide – bandwidth patch antenna for fifth generation communication applications at K - Band
    Safa N. Nafea, Nasser N. Khamiss
    International Journal of Electronics and Telecommunications, 2025
    The patch antenna usually used for many wireless applications, and fifth generation (5G) is the most attracting application in the field of millimeter wave communications recently. The researchers worked on solving problems those considered milestones against using patch antenna for 5G applications such as being an antenna with moderate gain and narrow operating bandwidth with high side lobe levels. In this article a microstrip patch antenna had been presented to operate over the n258 – Band for 5G communications at 26 GHz with an operating bandwidth around than 7 GHz. The proposed antenna was printed on Rogers RT/Duroid 5880 substrate. A high gain of 8.10 dB had been achieved with high Front – to – Back ratio of 24.47 dB and very low side lobe levels far field radiation pattern around -17 dB. The proposed antenna covered the operating bandwidth n258 for fifth generation applications in range of (24.25 – 27.50) GHz. The Computer simulation Technology (CST) had been used as a simulation environment for this design.
  • For 5G applications, high-gain patch antenna in Ka-Band
    Safa Nassr Nafea, Nasser N. Khamiss
    Indonesian Journal of Electrical Engineering and Computer Science, 2023
    <span>The fifth generation (5G) of telecommunications is an attractive application for many researchers during the last years. The 5G requires high date rate with low latency communication medium and patch antenna was used recently for this application. In this article a patch antenna for 5G at 38 GHz was proposed. This article worked on enhancing the gain of patch antenna at Ka-Band and reducing side lobes level (SLL) in radiation pattern. The gain of the patch antenna was improved using a reflector layer located under antenna’s ground with free space air gap separating between two layers. Moreover, the SLL were reduced to satisfy low latency condition for 5G communications. The proposed antenna shows high gain around 8.10 dB with high front-to-back (F/B) ratio of 16.24 dB and wide operating bandwidth around 1.4 GHz for high data rate requirements as well as having reduced overall size antenna. The article based on analytical calculations for patch dimensions and optimization procedure to achieve the desired performance of antenna. Computer simulation technology (CST) had been used as an environment for simulation.</span>
  • Compact multilayer patch antenna for wireless sensing network applications at 5.8 GHz
    Safa N. Nafea
    Aip Conference Proceedings, 2023
  • Improving Performance of Patch Antenna For IEEE 802.16e Applications Using Multi-layer Antenna Structure with Reflector
    Safa Nassr Nafea
    Ntccit 2018 Al Mansour International Conference on New Trends in Computing Communication and Information Technology, 2019
    Low side lobe level with low cost multilayer antenna for IEEE 802.16e applications such as WiMAX over industrial, scientific, and medical (ISM) band (5.725 – 5.875) GHz was presented shows high gain of 12.60 dB and fort-to-back ratio (F/B) of 18.55 dB with bandwidth around 163 MHz. The proposed multilayer antenna with reflector (MAWR) composed of a single plane feeding patch printed on Rogers RT/ Duroid 5880 substrate, covered with four Rogers RO6006 superstrates while a reflector layer located under feeding patch. Adding superstrate and reflector layers caused performance improvement by increasing gain and bandwidth with input reflection coefficient and side lobe level reduction. Computer Simulation Technology (CST) Microwave Studio was used as simulation environment.
  • Low side lobe level multilayer antenna for wireless applications
    Safa Nassr Nafea, Alyani Ismail, Raja Syamsul Azmir Raja Abdullah
    Progress in Electromagnetics Research Letters, 2016
    A low cost and easy fabrication multilayer antenna for wireless applications was presented to cover the industrial, scientific, and medical ISM band of (5.725-5.875) GHz with a gain of 11.7 dB. The antenna was composed of a feeding patch fabricated on a Rogers RT/Duroid 5880 substrate, and three superstrate layers of Rogers RO3006 were located above the feeding patch at a specific height for each layer. The superstrate layers were added to enhance the bandwidth and gain of the antenna and reduce its side-lobe level and return loss. The simulated and measured results of the operating frequency, return loss, bandwidth, and gain for the antenna were presented. CST Microwave Studio was used in this design's simulation.

RECENT SCHOLAR PUBLICATIONS

  • High – Gain and Wide – Bandwidth Patch Antenna for Fifth Generation Communication Applications at K - Band
    NNK Safa N. Nafea
    INTL JOURNAL OF ELECTRONICS AND TELECOMMUNICATIONS 71 (1), 209-214 , 2025
    2025
  • A Single Plane Low profile Patch Antenna π-Shaped Slots and Low Side Lobe Level for Directive Wireless Communications
    SN Nafea
    IOP Conference Series: Materials Science and Engineering 1291 (1), 012046 , 2023
    2023
    Citations: 4
  • Compact multilayer patch antenna for wireless sensing network applications at 5.8 GHz
    SN Nafea
    AIP Conference Proceedings 2787 (050021), 050021-1 - 050021-7 , 2023
    2023
    Citations: 3
  • For 5G applications, high-gain patch antenna in Ka-Band
    SN Nafea
    Indonesian journal of electrical engineering and computer science 31 (2) , 2023
    2023
    Citations: 17
  • Improving performance of patch antenna for IEEE 802.16 e applications using multi-layer antenna structure with reflector
    SN Nafea
    2018 Al-Mansour International Conference on New Trends in Computing … , 2018
    2018
    Citations: 7
  • PERFORMANCE IMPROVEMENT FOR PATCH ANTENNA FOR WLAN APPLICATIONS OVER ISM BAND (5.725-5.875) GHz USING MULTIPLE SUPERSTRATES
    SN Nafea
    Iraqi Journal of Information & Communications Technology 1 (1), 11-17 , 2018
    2018
    Citations: 8
  • POINT-TO-POINT MULTILAYER ANTENNA DESIGN FOR GAIN AND BANDWIDTH IMPROVEMENT FOR ISM 5.8 GHz
    SN NAFEA
    2016
  • Low side lobe level multilayer antenna for wireless applications
    SN Nafea, A Ismail, RSAR Abdullah
    Progress In Electromagnetics Research Letters 58, 105-111 , 2016
    2016
    Citations: 11

MOST CITED SCHOLAR PUBLICATIONS

  • For 5G applications, high-gain patch antenna in Ka-Band
    SN Nafea
    Indonesian journal of electrical engineering and computer science 31 (2) , 2023
    2023
    Citations: 17
  • Low side lobe level multilayer antenna for wireless applications
    SN Nafea, A Ismail, RSAR Abdullah
    Progress In Electromagnetics Research Letters 58, 105-111 , 2016
    2016
    Citations: 11
  • PERFORMANCE IMPROVEMENT FOR PATCH ANTENNA FOR WLAN APPLICATIONS OVER ISM BAND (5.725-5.875) GHz USING MULTIPLE SUPERSTRATES
    SN Nafea
    Iraqi Journal of Information & Communications Technology 1 (1), 11-17 , 2018
    2018
    Citations: 8
  • Improving performance of patch antenna for IEEE 802.16 e applications using multi-layer antenna structure with reflector
    SN Nafea
    2018 Al-Mansour International Conference on New Trends in Computing … , 2018
    2018
    Citations: 7
  • A Single Plane Low profile Patch Antenna π-Shaped Slots and Low Side Lobe Level for Directive Wireless Communications
    SN Nafea
    IOP Conference Series: Materials Science and Engineering 1291 (1), 012046 , 2023
    2023
    Citations: 4
  • Compact multilayer patch antenna for wireless sensing network applications at 5.8 GHz
    SN Nafea
    AIP Conference Proceedings 2787 (050021), 050021-1 - 050021-7 , 2023
    2023
    Citations: 3
  • High – Gain and Wide – Bandwidth Patch Antenna for Fifth Generation Communication Applications at K - Band
    NNK Safa N. Nafea
    INTL JOURNAL OF ELECTRONICS AND TELECOMMUNICATIONS 71 (1), 209-214 , 2025
    2025
  • POINT-TO-POINT MULTILAYER ANTENNA DESIGN FOR GAIN AND BANDWIDTH IMPROVEMENT FOR ISM 5.8 GHz
    SN NAFEA
    2016