Invited Talks:

• Delivered an Invited talk on “Telecommunication Education in India” in The European-Asia Telecommunication Engineering Education & 4G Workshop, 2006, Institut Teknologi Bandung, Bandung, Indonesia.
• Delivered an invited talk on “Research Activities in Microtrip Antennas and Computational Electromagnetics group in BIT Mesra”, in Int. Conf. on recent Advances in Microwave Theory and Applications (MICROWAVE 2008) during Nov. 21-24, 2008, Jaipur.  
• Delivered an invited talk on “Research Activities in Microtrip Antennas and Computational Electromagnetics group in BIT Mesra”, in APSYM- 2010, CUSAT, Cochin during Dec. 14-15,  2010. 
• Delivered an invited talk on “Simulation Study of Effect of Interference on  Non-autonomous Chaotic Circuits”, in APSYM 2010, December 14-16, 2010, in CUSAT, Cochin.
• Delivered an invited talk on “Electromagnetic Materials: Characterization and Applications” in National Conference cum Workshop On Recent Developments in Engineering Materials, RDEM 2011, BIT, Mesra, May 12-14, 2011.
• Delivered an invited talk on “My Recent Research Contributions in RF & Microwave in BIT Mesra”  BITCC Muscat, during Sept. 26-28, 2011, Oman.
• Delivered an invited talk on “GPS and its Applications in ICT, “ in IETE Foundation Day as a Guest of Honour on 2^nd November, 2011.
• Delivered an invited talk on “Women and Girls in ICT,” in Institution of Engineers, Ranchi on World telecommunication and Information Society Day as a Guest of Honour, on May 17^th 2012.
• Delivered an invited talk on “EMI & EMC”  BITCC Muscat, on March 24th, 2013, Oman.
• Delivered an invited talk on “Electronic Warfare” in at CTC (T&IT) CISF, Dhurva Ranchi on October 22nd 2013.  
• Resource person in short term course on “Concepts in Wireless Communication” held during Dec. 2-7, 2013, in Dept. of ECE, BIT, Mesra
• Delivered an invited talk on “Electronic Warfare” and “EMI & EMC”  at CTC (T&IT) CISF, Dhurva Ranchi on February 14,  2015.  
• Delivered an invited talk on “EMI & EMC” in Shiv Nadar University, Chennai, on 9^th July, 2015.
• Delivered an invited talk on “EMC Compliance of Electronic Devices” and “EMI Shielding” in Shastra University, Thanjavur, under IEEE DS programme , on 10^th July, 2015.
• Delivered an invited talk on “EMC Compliance of Electronic Devices” in Tezpur University, Assam, on 22^nd August, 2015.
• Delivered an invited talk on “EMC Compliance of Electronic Devices” in CIT, Ranchi, on 10^th October, 2016.
• Delivered an invited talk on “Electromagnetic Interference Shielding” in School of Engineering, CUSAT, Cochin, on 9^th December, 2016.
• Delivered an invited talk on “Antennas for Wireless Communications” in the short term course on ‘Recent Trends in Microwave, Antenna and Wireless Communication’ in Cambridge Institute of Technology, Ranchi held during the period 27 Feb.- 4 March, 2017.
• Delivered an invited talk on “Monte Carlo Integration Technique for Radiation and Scattering Problems” in A National Conference on Engineering Mathematics (TOPAS 2017)  in Indian Institute of Technology, Kharagpur held during the period Dec. 16-17, 2017.
• Delivered an invited talk on "Antennas for 5G" in Short term training program on '5G Mobile Communication Networks' in Dept. of Electronics and Communication, BIT, Mesra, Ranchi , during the period Dec 9-13, 2019.
• Delivered an invited talk on “Antennas for 5 G “ in a workshop on  Research Trends in Microwave Devices and Antennas, at UCET, VBU, Hazaribag, Jharkhand on 14^th Feb. 2019.
• Delivered an invited lecture in ATAL FDP Online Workshop on Wearable Devices, at NIT Jamshedpur held on Dec. 17^th, 2020.
• Delivered an Invited talk on "EMI/EMC Issues in IIoT Devices" in 6 days Online AICTE sponsored Short Term Training Program on “IoT and its Application in Industry” on  21^st  July, 2021 at SMIT, Sikkim.
• Delivered a lecture on “Advanced Antennas for 5G Systems” in the Webinar series of the Department of Electronics & Communications Engineering, ITER, Shiksha “O” Anusandhan  on the 25th September 2021.
• Delivered an invited talk on “Importance of Electromagnetic Compatibility in Modern Communication Systems” in a Webinar on 23^rd October, 2021 organized by Jaypee Institute of  Information Technology, Noida.,
• Delivered an invited talk on “Microwave Metamaterial sensors” in an ATAL FDP on "Soft Computing and its Application in Electromagnetics (SCAE-2021) on 24^th Nov. 2021 organized by IIIT, Ranchi.
• Delivered an invited talk on “Microwave Sensors” in a Workshop on design, Simulation and Testing of Microwave Devices, organized by Jaypee Institute of Information Technology, Noida., during 12^th-17^th September 2022.
• Delivered an invited talk as keynote speaker on “Microwave Sensors: Design, Methodologies, and Challenges” in a Workshop on design, Simulation and Testing of Microwave Devices, organized by Sikkim Manipal Institute of Technology, during 16^th-17^th December 2022.
• Delivered an invited talk on “Simulation and Optimization of Electromagnetic Compatibility Problems” in a High-End Workshop (KARYASHALA), on Soft Computing and its Application in Electromagnetics (SCAE-2023) during 3^rd- 9^th January 2023 in IIIT, Ranchi.