In the Section “Microwave and Wireless Communication”, we would like to invite advanced theories and technologies across a wide spectrum. These can be related to microwave and millimeter wave communication, including radar sensor, etc., which may be a fundament or application, element or system, hardware or software, methodology theory or measurement. We hope to present the state-of-the-art technologies in this Section.

As they are in an Open Access format, you have free and unlimited access to the full text of all the articles published in our journal. We welcome you to read our most highly cited papers published in 2021 below:

1. “Ubiquitous Vehicular Ad-Hoc Network Computing Using Deep Neural Network with IoT-Based Bat Agents for Traffic Management”
by Srihari Kannan, Gaurav Dhiman, Yuvaraj Natarajan, Ashutosh Sharma, Sachi Nandan Mohanty, Mukesh Soni, Udayakumar Easwaran, Hamidreza Ghorbani, Alia Asheralieva and Mehdi Gheisari
Electronics 2021, 10(7), 785; https://doi.org/10.3390/electronics10070785
Available online: https://www.mdpi.com/2079-9292/10/7/785

2. “A Quad-Port Dual-Band MIMO Antenna Array for 5G Smartphone Applications”
by Jianlin Huang, Guiting Dong, Jing Cai, Han Li and Gui Liu
Electronics 2021, 10(5), 542; https://doi.org/10.3390/electronics10050542
Available online: https://www.mdpi.com/2079-9292/10/5/542

3. “Infinity Shell Shaped MIMO Antenna Array for mm-Wave 5G Applications”
by Mian Muhammad Kamal, Shouyi Yang, Xin-cheng Ren, Ahsan Altaf, Saad Hassan Kiani, Muhammad Rizwan Anjum, Amjad Iqbal, Muhammad Asif and Sohail Imran Saeed
Electronics 2021, 10(2), 165; https://doi.org/10.3390/electronics10020165
Available online: https://www.mdpi.com/2079-9292/10/2/165

4. “A 28 GHz Broadband Helical Inspired End-Fire Antenna and Its MIMO Configuration for 5G Pattern Diversity Applications”
by Hijab Zahra, Wahaj Abbas Awan, Wael Abd Ellatif Ali, Niamat Hussain, Syed Muzahir Abbas and Subhas Mukhopadhyay
Electronics 2021, 10(4), 405; https://doi.org/10.3390/electronics10040405
Available online: https://www.mdpi.com/2079-9292/10/4/405

5. “Dynamic Route Discovery Using Modified Grasshopper Optimization Algorithm in Wireless Ad-Hoc Visible Light Communication Network”
by Sharmila Vadivel, Srinivas Konda, Kavitha Rani Balmuri, Andrzej Stateczny and B. D. Parameshachari
Electronics 2021, 10(10), 1176; https://doi.org/10.3390/electronics10101176
Available online: https://www.mdpi.com/2079-9292/10/10/1176

6. “A Flexible and Pattern Reconfigurable Antenna with Small Dimensions and Simple Layout for Wireless Communication Systems Operating over 1.65–2.51 GHz”
by Adnan Ghaffar, Xue Jun Li, Wahaj Abbas Awan, Aqeel Hussain Naqvi, Niamat Hussain, Mohammad Alibakhshikenari and Ernesto Limiti
Electronics 2021, 10(5), 601; https://doi.org/10.3390/electronics10050601
Available online: https://www.mdpi.com/2079-9292/10/5/601

7. “Design and Synthesis of Multi-Mode Bandpass Filter for Wireless Applications”
by Satheeshkumar Palanisamy, Balakumaran Thangaraju, Osamah Ibrahim Khalaf, Youseef Alotaibi and Saleh Alghamdi
Electronics 2021, 10(22), 2853; https://doi.org/10.3390/electronics10222853
Available online: https://www.mdpi.com/2079-9292/10/22/2853

8. “Design and Realization of a Frequency Reconfigurable Antenna with Wide, Dual, and Single-Band Operations for Compact Sized Wireless Applications”
by Wahaj Abbas Awan, Syeda Iffat Naqvi, Wael Abd Ellatif Ali, Niamat Hussain, Amjad Iqbal, Huy Hung Tran, Mohammad Alibakhshikenari and Ernesto Limiti
Electronics 2021, 10(11), 1321; https://doi.org/10.3390/electronics10111321
Available online: https://www.mdpi.com/2079-9292/10/11/1321

9. “Design of a MIMO Antenna with High Gain and Enhanced Isolation for WLAN Applications”
by He Peng, Ruixing Zhi, Qichao Yang, Jing Cai, Yi Wan and Gui Liu
Electronics 2021, 10(14), 1659; https://doi.org/10.3390/electronics10141659
Available online: https://www.mdpi.com/2079-9292/10/14/1659

10. “8-Port Semi-Circular Arc MIMO Antenna with an Inverted L-Strip Loaded Connected Ground for UWB Applications”
by Tathababu Addepalli, Arpan Desai, Issa Elfergani, N. Anveshkumar, Jayshri Kulkarni, Chemseddine Zebiri, Jonathan Rodriguez and Raed Abd-Alhameed
Electronics 2021, 10(12), 1476; https://doi.org/10.3390/electronics10121476
Available online: https://www.mdpi.com/2079-9292/10/12/1476

11. “Compact Quad-Element High-Isolation Wideband MIMO Antenna for mm-Wave Applications”
by Daniyal Ali Sehrai, Muhammad Asif, Nosherwan Shoaib, Muhammad Ibrar, Saeedullah Jan, Mohammad Alibakhshikenari, Ali Lalbakhsh and Ernesto Limiti
Electronics 2021, 10(11), 1300; https://doi.org/10.3390/electronics10111300
Available online: https://www.mdpi.com/2079-9292/10/11/1300

12. “Leveraging Machine-Learning for D2D Communications in 5G/Beyond 5G Networks”
by Sherief Hashima, Basem M. ElHalawany, Kohei Hatano, Kaishun Wu and Ehab Mahmoud Mohamed
Electronics 2021, 10(2), 169; https://doi.org/10.3390/electronics10020169
Available online: https://www.mdpi.com/2079-9292/10/2/169

13. “E-Shaped H-Slotted Dual Band mmWave Antenna for 5G Technology”
by Kiran Raheel, Ahsan Altaf, Arbab Waheed, Saad Hassan Kiani, Daniyal Ali Sehrai, Faisel Tubbal and Raad Raad
Electronics 2021, 10(9), 1019; https://doi.org/10.3390/electronics10091019
Available online: https://www.mdpi.com/2079-9292/10/9/1019

14. “Donut-Shaped mmWave Printed Antenna Array for 5G Technology”
by Mian Muhammad Kamal, Shouyi Yang, Saad Hassan Kiani, Muhammad Rizwan Anjum, Mohammad Alibakhshikenari, Zulfiqar Ali Arain, Abdul Aleem Jamali, Ali Lalbakhsh and Ernesto Limiti
Electronics 2021, 10(12), 1415; https://doi.org/10.3390/electronics10121415
Available online: https://www.mdpi.com/2079-9292/10/12/1415

15. “A Textile EBG-Based Antenna for Future 5G-IoT Millimeter-Wave Applications”
by EL May Wissem, Imen Sfar, Lotfi Osman and Jean-Marc Ribero
Electronics 2021, 10(2), 154; https://doi.org/10.3390/electronics10020154
Available online: https://www.mdpi.com/2079-9292/10/2/154

16. “Survey of Millimeter-Wave Propagation Measurements and Models in Indoor Environments”
by Ahmed Al-Saman, Michael Cheffena, Olakunle Elijah, Yousef A. Al-Gumaei, Sharul Kamal Abdul Rahim and Tawfik Al-Hadhrami
Electronics 2021, 10(14), 1653; https://doi.org/10.3390/electronics10141653
Available online: https://www.mdpi.com/2079-9292/10/14/1653

17. “A Novel Hook-Shaped Antenna Operating at 28 GHz for Future 5G mmwave Applications”
by Mian Muhammad Kamal, Shouyi Yang, Saad Hassan Kiani, Daniyal Ali Sehrai, Mohammad Alibakhshikenari, Mujeeb Abdullah, Francisco Falcone, Ernesto Limiti and Mehre Munir
Electronics 2021, 10(6), 673; https://doi.org/10.3390/electronics10060673
Available online: https://www.mdpi.com/2079-9292/10/6/673

18. “Research Challenges and Opportunities in Drone Forensics Models”
by Arafat Al-Dhaqm, Richard A. Ikuesan, Victor R. Kebande, Shukor Razak and Fahad M. Ghabban
Electronics 2021, 10(13), 1519; https://doi.org/10.3390/electronics10131519
Available online: https://www.mdpi.com/2079-9292/10/13/1519

19. “Massive MIMO Techniques for 5G and Beyond—Opportunities and Challenges”
by David Borges, Paulo Montezuma, Rui Dinis and Marko Beko
Electronics 2021, 10(14), 1667; https://doi.org/10.3390/electronics10141667
Available online: https://www.mdpi.com/2079-9292/10/14/1667

20. “Design and Analysis of Wideband Flexible Self-Isolating MIMO Antennas for Sub-6 GHz 5G and WLAN Smartphone Terminals”
by Jayshri Kulkarni, Abdullah G. Alharbi, Arpan Desai, Chow-Yen-Desmond Sim and Ajay Poddar
Electronics 2021, 10(23), 3031; https://doi.org/10.3390/electronics10233031
Available online: https://www.mdpi.com/2079-9292/10/23/3031