• Substrate Integrated Waveguide (SIW) Based Antennas

• Broadband and Multiband Planar Antennas

• Antennas for IoT and Military Application

• Millimeter wave and THz Technologies

• Microwave Integrated Circuits

Currently, He is an Assistant Professor in the Dept. of Electronics and Communication Engineering, Visvesvaraya National Institute of Technology, Nagpur, INDIA. He completed the Ph.D. program in (Microwave and RF) in the Dept. of Electronics and Communication Engineering at National Institute of Technology Tiruchirappalli-INDIA in 2019.He completed Masters (M.Tech.) in the Dept. of Electronics Engineering at Pondicherry Central University with the specialization in Electronics. He completed a Bachelor's degree (B.Tech) in Electronics and Communication Engineering from Govt. Engineering College Ajmer, affiliated Rajasthan Technical University, Kota Rajasthan in 2012. He was Recognized as Top 2% Scientists in the World (all fields)" by a survey conducted by Stanford University, based on the citations, h-index, and co-authorship adjusted hm-index, for two consecutive years 2020 and 2021. He is recipient of MeitY Fellowship and DST Young Scientist Award from Govt. of India, and EuCAP Student Grant (Poland, Europe). He is the recipient of various travel grants from Govt. of India, including DST ITS (2018 & 2022), MeitY Travel Support, and CSIR Travel Grant. He is the reviewer of potential many peer-reviewed journals like IEEE AWPL, IEEE Access, IET Microwaves, Antennas & Propagation.

Ph.D. (2015-19)

• National Institute of Technology Trichy (NIT-Trichy), India.
• Specialization: RF & Microwave Engineering.

M. Tech. (2013-15)

• Dept. of Electronics Engineering, Pondicherry Central University, Pondicherry, India.
• Specialization: Electronics Engineering.

B. Tech. (ECE:2008-12)

• Govt. Engineering College Ajmer, affiliated to Rajasthan Technical University, Kota Rajasthan, India
• Electronics and Communication Engineering.

• Recognized as Top 2% Scientists in the World (all fields)" by a survey conducted by Stanford University, for the year 2021.
• Recipient of Young Scientist cum Travel Grant Award, DST, GoI, for presenting a paper at APCC-2022, Jeju, Korea.
• Awarded DST SIRE Fellowship (2022) from DST SERB, Government of India.
• Recognized as Top 2% Scientists in the World (all fields)" by a survey conducted by Stanford University, for the year 2020.
• Recipient of  EuCAP-2019 Grant in Poland as a Young Researcher.
• Recipient of Visvesvaraya Fellowship (2015-2020) from MeitY, Government of India.
• Recipient of Young Scientist Award, DST, GoI, for presenting a paper at APMC-2018, Japan.
• Recipient of  International Travel Grant from CSIR, GoI, India,  for  EUCAP-2019, Krakow,  Poland.
• Recipient of International Conference Support MeitY, Government of India, Japan.

    Refereed SCI Indexed Journals Year wise (35)

2022-23

[J-35].   Kumar A, et. al. Design of Antenna-Multiplexer for Seamless On-Body Internet of Medical Things (IoMT) Connectivity. IEEE Transactions on Circuits and Systems II: Express Briefs. 2022. IF: 3.72

[J-34].   Kumar A, et al. Compact Planar Magneto-Electric Dipole-like Circularly Polarized Antenna IET Communications, 2022. IF: 1.34

[J-33].   Chaturvedi D, Althuwayb AA, Kumar A. Bandwidth enhancement of a planar SIW cavity-backed slot antenna using slot and metallic-shorting via. Applied Physics. A, Materials Science & Processing, 2022, 128, 193. IF: 2.33

[J-32].   Chaturvedi D, Kumar A, Althuwayb AA. A Dual-Band Dual-Polarized SIW Cavity-Backed Antenna-Duplexer for Off-body communication. Alexandria Engineering Journal. 2022 Sep 17.  IF: 6.62

[J-31].   Althuwayb, AA, Chaturvedi, D., Kumar A, (2022). SIW Cavity-Backed Slot Antenna with Monopole-Like R         adiation for Vehicular Communications. Applied Physics. A, Materials Science & Processing, 2022, 202. IF: 2.33

[J-30]. Rosaline I, Kumar A, Upadhyay P, Murshed AH. Four Element MIMO Antenna Systems with Decoupling Lines for High-Speed 5G Wireless Data Communication. International Journal of Antennas and Propagation.; vol. 2022, pp. 1–13, 2022. IF: 1.17

2021-22

[J-29].   Kumar A, Althuwayb AA. SIW Resonator Based Duplex Filtenna. IEEE Antennas and Wireless Propagation Letters. 2021 Oct 7, 20, 2544–2548. IF: 3.7

[J-28].   Kumar A, Imaculate Rosaline S. Hybrid half-mode SIW cavity-backed diplex antenna for on-body transceiver applications. Applied Physics A. 2021 Nov;127(11):1-7. IF: 2.33

[J-27].   Kesharwani A, Aggarwal V, Singh S, BR R, Kumar A. Marine seismic signal denoising using VMD with Hausdorff distance and wavelet transform. The Journal of Defense Modeling and Simulation. 2021:15485129211036044.

[J-26].   Ketham R, Althuwayb AA, Kumar A. Low-profile Magneto-electric Dipole Antenna. IETE Journal of Research. 2021 Jan 21:1-9. IF: 2.33

[J-25].   Althuwayb AA, Al‐Hasan MA, Kumar A. Chaturvedi D. Design of half‐mode substrate integrated cavity inspired dual‐band antenna. International Journal of RF and Microwave Computer‐Aided Engineering. 2021 Feb;31(2):e22520. IF: 1.694

2020-21

[J-24].   Kumar A. Wideband circular cavity‐backed slot antenna with conical radiation patterns. Microwave and Optical Technology Letters. 2020 Jun;62(6):2390-7.            IF: 1.392

[J-23].   Kumar A, Al‐Hasan MA. A coplanar‐waveguide‐fed planar integrated cavity backed slotted antenna array using TE33 mode. International Journal of RF and Microwave Computer‐Aided Engineering. 2020 Oct;30(10):e22344. IF: 1.694

[J-22].   Kumar A, Sharwan Ram, and Mu’ath Al-Hasan. A Planar Cavity-Backed Self-Triplexing Slot Antenna for Planar Integration. Microwave Journal. October, 13, 2020,Vol:63, Issue: 10.      

[J-21].   Kumar A, Althuwayb AA. Wideband triple resonance patch antenna for 5G Wi-Fi spectrum. Progress In Electromagnetics Research Letters. 2020;93:89-97.

2019-20

[J-20].   Kumar A. Design of self‐quadruplexing antenna using substrate‐integrated waveguide technique. Microwave and Optical Technology Letters. 2019 Dec;61(12):2687-9. IF: 1.392

[J-19].   Chaturvedi D, Kumar A, Raghavan S. A nested SIW cavity-backing antenna for Wi-Fi/ISM band applications. IEEE Transactions on Antennas and Propagation. 2019 Jan 31;67(4):2775-80.  IF: 4.371

[J-18].   Kumar A, Chaturvedi D, Raghavan S. Design and experimental verification of dual-fed, self-diplexed cavity-backed slot antenna using HMSIW technique. IET Microwaves, Antennas & Propagation. 2019 Feb 25;13(3):380-5. IF: 1.972

[J-17].   Chaturvedi D, Kumar A, Raghavan S. Wideband HMSIW-based slotted antenna for wireless fidelity application. IET Microwaves, Antennas & Propagation. 2019 Feb 21;13(2):258-62. IF: 1.972

[J-16].   Kumar A, Chaturvedi D, Raghavan S. Low‐profile substrate integrated waveguide (SIW) cavity‐backed self‐triplexed slot antenna. International Journal of RF and Microwave Computer‐Aided Engineering. 2019 Mar;29(3):e21606. IF: 1.694

[J-15].   Saravanakumar M, Kumar A, Raghawan S. Substrate Integrated Waveguide-fed Wideband Circularly Polarised Antenna with Parasitic Patches. Defence Science Journal. 2019 Jan 1;69(1). IF: 1.1

[J-14].   Chaturvedi D, Kumar A, Raghavan S. Compact QMSIW-based antenna with different resonant frequencies depending on loading of metalized vias. International Journal of Microwave and Wireless Technologies. 2019 May;11(4):420-7.

2018-19

[J-13].   Kumar A, Raghavan S. A self-triplexing SIW cavity-backed slot antenna. IEEE Antennas and Wireless Propagation Letters. 2018 Mar 14;17(5):772-5.  IF: 3.726

[J-12].   Chaturvedi D, Kumar A, Raghavan S. An integrated SIW cavity-backed slot antenna-triplexer. IEEE Antennas and Wireless Propagation Letters. 2018 Jul 12;17(8):1557-60. IF: 3.726

[J-11].   Kumar A, Raghavan S. Design of SIW cavity‐backed self‐triplexing antenna. IET Electronics Letters. 2018 May;54(10):611-2. IF: 1.316

[J-10].   Kumar A, Saravanakumar M, Raghavan S. Dual-frequency SIW-based cavity-backed antenna. AEU-International Journal of Electronics and Communications. 2018 Dec 1;97:195-20. IF: 3.183

[J-9].     Kumar A, Chaturvedi D, Raghavan S. Design of a self-diplexing antenna using SIW technique with high isolation. AEU-International Journal of Electronics and Communications. 2018 Sep 1;94:386-91. IF: 3.183/

[J-8].     Kumar A, Raghavan S. Broadband SIW cavity-backed triangular-ring-slotted antenna for Ku-band applications. AEU-International Journal of Electronics and Communications. 2018 Apr 1;87:60-4. IF: 3.183

[J-7].     Kumar A, Chaturvedi D, Raghavan S. SIW cavity-backed circularly polarized square ring slot antenna with wide axial-ratio bandwidth. AEU-International Journal of Electronics and Communications. 2018 Sep1; 94:122-7. IF: 3.183

[J-6].     Kumar A, Raghavan S. Bandwidth Enhancement of Substrate Integrated Waveguide Cavity-backed Bow-tie-complementary-ring-slot Antenna using a Shorted-via. Defence Science Journal. 2018 Mar 13;68(2):197-202. IF: 1.1

[J-5].     Kumar A, Raghavan S. Planar Cavity-Backed Self-Diplexing Antenna Using Two-Layered Structure. Progress In Electromagnetics Research. 2018;76:91-6.

2017-18

[J-4].     Kumar A, Raghavan S. Broadband dual-circularly polarised SIW cavity antenna using a stacked structure. IET Electronics Letters. 2017 Aug 4;53(17):1171-2. IF: 1.316

[J-3].     Kumar A, Raghavan S. Wideband slotted substrate integrated waveguide cavity‐backed antenna for Ku–band application. Microwave and Optical Technology Letters. 2017 Jul;59(7):1613-9. IF: 1.392

[J-2].     Kumar A, Raghavan S. Design of a broadband planar cavity-backed circular patch antenna. AEU-International Journal of Electronics and Communications. 2017 Dec 1; 82:413-9. IF: 3.183

2016-17

[J-1].     Kumar A, Raghavan S. A Review: Substrate Integrated Waveguide Antennas and Arrays. Journal of Telecommunication, Electronic and Computer Engineering (JTEC). 2016 Aug 1;8(5):95-104.

IEEE Xplore Conference:

[C-12].  Bandwidth-Improved HMSIW Resonator Based Filtennas for Single/Dual Channel Network. In 2021 IEEE Indian Conference on Antennas and Propogation (InCAP) 2021 Dec 15 (pp. 1-4).

[C-11]. A. Blessy, Charumathi, K. Surendra, A. Kumar, and S. Raghavan, “SIW bow-tie slot cavity backed antenna with improved gain characteristics,” Proc. 2019 TEQIP - III Spons. Int. Conf. Microw. Integr. Circuits, Photonics Wirel. Networks, IMICPW 2019, no. 1, pp. 508–510, 2019.

[C-10]. Kumar A, Chaturvedi D, Raghavan S. Dual-Band, Dual-Fed Self-Diplexing Antenna. In 2019 13th European Conference on Antennas and Propagation (EuCAP) 2019 Mar 31 (pp. 1-5). IEEE. Krakow, Poland from 31 March until 5 April 2019. (Received Travel Support from CSIR and EuCAP Grant as a young researcher). 

[C-9]. D. Chaturvedi, A. Kumar, and S. Raghavan, “A Planar SIW Cavity-backed Tilted-Slots Antenna for WBAN Application,” 13th Eur. Conf. Antennas Propagation, EuCAP 2019, no. EuCAP, 2019, held in Krakow, Poland (Received Grant from SERB-DST) 

[C-8]. Kumar A, Chaturvedi D, Saravanakumar M, Raghavan S. SIW Cavity-Backed Self-Triplexing Antenna with T-Shaped Slot. In 2018 Asia-Pacific Microwave Conference (APMC) 2018 Nov 6 (pp. 1588-1590). IEEE. Kyoto, Japan (Received International Travel Grant, Ministry of Electronics and Information Technology (MeitY), Govt. of India)

[C-7]. Chaturvedi D, Kumar A, Raghavan S. A Substrate Integrated Waveguide Based Antenna-Triplexer. In 2018 Asia-Pacific Microwave Conference (APMC) 2018 Nov 6 (pp. 10-12). IEEE. Kyoto, Japan (selected as a winner of the APMC 2018 Student Travel Grant of 100,000 JPY)

[C-6]. Chaturvedi D, Murugeshwari B, Kumar A, Raghavan S. SIW Cavity-Backed Antenna-Triplexer for Radio Altimeter/Wi-Fi Applications. In 2018 IEEE Indian Conference on Antennas and Propogation (InCAP) 2018 Dec 16 (pp. 1-3). IEEE. 

[C-5]. Kumar A, Raghavan S. Dual-circularly polarized planar cavity-backed antenna for broadband applications. In 2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM) 2017 Nov 24 (pp. 1-4). IEEE. (Received Travel Grant from Organizers) 

[C-4]. Kumar A, Raghavan S. A design of miniaturized half-mode SIW cavity backed antenna. In 2016 IEEE Indian Antenna Week (IAW 2016) 2016 Jun 6 (pp. 4-7). IEEE.  (Invited)

[C-3]. Kumar A, Shanmuganantham T, Chaturvedi D. A CPW-fed tri-frequency monopole antenna. In 2015 IEEE International Conference on Signal Processing, Informatics, Communication and Energy Systems (SPICES) 2015 Feb 19 (pp. 1-5). IEEE. 

[C-2]. Chaturvedi D, Shanmuganantham T, Kumar A. Performance analysis of CPW-fed hexagonal shaped metamaterial antenna for WiMAX/WLAN applications. In 2015 International Conference on Computing and Communications Technologies (ICCCT) 2015 Feb 26 (pp. 89-92). IEEE.

[C-1]. Chaturvedi D, Kumar A, Shanmuganantham T. Asymmetric coplanar waveguide-fed CRLH-TL based antenna for WLAN/LTE applications. In 2015 International Conference on Circuits, Power and Computing Technologies [ICCPCT-2015] 2015 Mar 19 (pp. 1-4). IEEE.