1. Certified and Participated in ATAL Academy 5-Day FDP on “Global Navigation Satellite Systems"” organized by Department of ECE at Indian Institute of Information Technology Design and Manufacturing Kurnool from 26th-30th July 2021
2. Certified and Participated in ATAL Academy 5-Day FDP on “Modern Antenna Technologies for Futuristic Wireless Communication Systems” organized by Department of ECE at Guru Jambheshwar University of Science and Technology, Hisar, Haryana-125001 from 20th-24th Aug 2021
3. Certified and Participated in 6-day FDP on “Antenna Application and Microwave Design ” organized by Department of ECE at Sri Sairam Institute of Technology ,Chennai from 15th-20th June 2020.
4. Certified and Participated in 3-Day FDP on “Industrial Artificial Intelligence” organized by Department of MECH, CSE,& EEE association with T &P , EDWISELY at Lendi IET, Vizianagaram from 15th-17th June 2020.
5. Certified and Participated in 5-Day FDP on “Advances in5G-Wireless Communications with Hand on Experiences” organized by Department of ECE at Lendi IET, Vizianagaram from 16th-20th June 2020.
6. Certified and Participated in AICTE recognized one week FDP on “Antenna Design Techniques and Software Simulations using HFSS” organized by Department of ECE at NITTTR, Chandigarh from 13th-17th July 2020.
7. Certified and Participated in AICTE recognized one week FDP on “Advances in Antenna Design Techniques and Simulations using CST Studio Suite” organized by Department of ECE at NITTTR, Chandigarh from 22nd-26th June 2020.
8. Certified and Participated in 3-Day FDP on “Microstrip Antenna Design Fundamentals and Practical Implementation of Triple band Antenna for 5G Wireless Applications using ANSYS HFSS” organized by Department of ECE at RISE Krishna sai Gandhi group of institutions , Ongole from 4th-6th June 2020.
9. Certified and Participated in 1 Week FDP on “Machine Learning and its Applications”(Phase-II)organized by Department of ECE at Lendi IET, Vizianagaram from 23rd-28th Nov 2020.
10. Certified and Participated in 1 Week FDP on “Machine Learning and its Applications”(Phase-I)organized by Department of ECE at Lendi IET, Vizianagaram from 2nd-7th Nov 2020.
11. Certified and Participated in 3-Day FDP on “Internet of Things (IoT)” organized by Department of ECE at Lendi IET, Vizianagaram from 27th-29th May 2020.
12. Certified and Participated in one week FDP on “Advanced Antenna Design Using HFSS” organized by Department of ECE at Santhiram Engineering College ,Nandyal in collaboration with Vardhaman College of Engineering ,Hyderabad from 12th-17th May 2020.
13. Certified and Participated in 3-Day FDP on “Outcome Based Education System” organized by Department of Mechanical engineering at Lendi IET, Vizianagaram from 21st-23rd May 2020.
14. Participated in 6-Day Programme on “VLSI Design Verification and Testing” in association with MeitY, E& ICT Academy, NIT-Warangal at LIET, Vizianagaram from 13th -19th November 2018.
15. Participated in 6-Day Programme on “Signal Processing for 5G Wireless Communications” in association with DietY, E& ICT Academy, NIT-Warangal at LIET, Vizianagaram from 13th -19th November 2018.
16. Participated in 6-Day Workshop on “Applications of Embedded Systems to Internet of Things (AESIoT)” Organized by Dept. of EEE, LIET and Teaching and Learning Center for IoT, IIT, Patna, MHRD Funded, Govt. of India , from  16th -21st Apr. 2018.
17. Certified and Participated in 3-Day Workshop on “Design and Analysis of Antennas using HFSS (WAAH-17)” in association with Entuple Technologies Pvt. Ltd. and IETE at Lendi IET, Vizianagaram from 7th-12th August 2017.
18. Certified and Participated in 6-Day Programme on “Aspects of VLSI Design using EDA Tools” in association with CoreEL Technologies Pvt. Ltd. and IETE at Lendi IET, Vizianagaram from 7th-12th August 2017.
19. Certified and Participated in 6-Day Programme on “Internet of Things (IoT) with Hands on Experience” in association with Tenet Technetronics Pvt. Ltd. and IE (I) at Lendi IET, Vizianagaram from 7th-12th August 2017.
20. Certified and Participated in 6-Day Programme on “Advances in Practical RF Antenna Design” in association with DietY, E& ICT Academy, NIT-warangal at LIET, Vizianagaram from 13th-18th September 2016.
21. Certified and Participated in 1-Day workshop on “Internet of Things” Organized by Dept. Of ECE, LIET in Collaboration with Phytec India on 26th Apr 2016.
22. Certified and Participated in 7-Day Short Term Course  on “Design and simulation of antennas and microwave devices” Organized by Dept. Of ECE, NIIT, Rourkela during on 1-8th Jun 2016.
23. Certified and Participated in 2-Day workshop on “Xilinx FPGA based Embedded and DSP Design” Organized by Dept. Of ECE, LIET in Collaboration with Core EL and IETE during 23rd-24th Jan 2015.
24. Certified and Participated in 2-Day workshop on “International Workshop on Embedded Systems” Organized by Dept. Of ECE, M.V.G.R during 5-7th Jan 2015.
25. Participated in 5-Day FDP on “Network Simulation Using NS2" Organized by NEX-G, ICT, at Lendi IET, Jonnadafrom 27th Dec to 31st Dec 2013.
26. Certified and Participated in 2-Day workshop on “Advances in Signal Processing(NWASP-13)” Organized by Dept. Of ECE, A.U during 30-31st Aug 2013
27. Certified and Participated a 7-Day QIP Short term course on “Fundamentals of Signal Processing for Antenna Arrays” Organized by Indian Institute of Technology during 15th- 20th July 2013.
28. Certified and Participated a 2-Day Workshop  on “Matlab and its Applications in communications and signal processing ” Organized by AU during 12-13th  Nov 2011.

1. Darimireddy, Naresh K., Rajasekhar Nalanagula, Runa Kumari, Dunya Z. Mohammed, Zahriladha Zakaria, and Ahmed JA Al-Gburi. "Wideband circularly polarized inverted cup shaped hybrid dielectric-resonator antenna over an asymmetric jerusalem cross-based metasurface." Progress In Electromagnetics Research Letters 125 (2025): 59-66.
2. Nalanagula, Rajasekhar, Naresh K. Darimireddy, Runa Kumari, and Chan Wang Park. "Circularly Polarized Modified Minkowski Metasurface-Based Hybrid Dielectric Resonator Antenna for 5G n79 Wireless Applications." Electronics 13, no. 16 (2024): 3117.
3. N. Rajasekhar, Naresh K. Darimireddy, Runa Kumari, Chan-Wang Park “Dual Circularly Polarized Semi-Cylindrical Hybrid Dielectric Resonator Antenna for X and Ku-Band Applications” in the International Journal of RF and Microwave CAD-Wiley Periodicals, vol. 32, no. 6, June 2022. (Indexed in SCI-Expanded, Impact factor 1.694).
4. N. Rajasekhar, Naresh K. Darimireddy, Runa Kumari, Chan-Wang Park, R. Ramana Reddy, “Circularly Polarized Microstrip, Dielectric Resonator and Hybrid Dielectric Resonator Antennas: A Brief Review and Perspective Analysis” in the MDPI Sensors, vol. 21, no.12, p. 4100, June 2021. (Indexed in SCI-Expanded, Impact factor 3.275)
5. N. Rajasekhar, Runa Kumari, Naresh K. Darimireddy, and Abdellah Chehri. "A Hybrid Dielectric Resonator Antenna with Dual Sense Circular Polarization for Wireless LAN Applications." In Human Centred Intelligent Systems, pp. 171-178. Springer, Singapore, 2022 (Scopus Indexed Book Chapter).
6. B. R. Sanjeeva Reddy, Naresh K. Darimireddy, N. Rajasekhar and M. Sujatha, “Performance of Wearable Circularly Polarized Antenna on Different High Frequency Substrates for Dual-band Wireless Applications,” in FACTA Universitatis:  Electronics & Energetics ), vol. 36, no.1,pp. 121-131, March 2023  (Indexed in WOS).
7. V. Manjusha N. Raja Sekhar ,V. Susmitha , B. Devi Lalitha Chandini , P. Srikanth, “Design Of Hybrid Dielectric Resonator Antenna For Multifunctional Applications” in i-manager's Journal on Electronics Engineering, , vol. 10, no. 3,2020 (Free Journal)
8. N.Raja Sekhar Kavya. A, Sri Sowmya. A, Lavanya.G.G, Sree Jhari.G, “Design of MIMO Dielectric Resonator Antenna with Improved Isolation for C-Band Applications” in Trends in Microwave Engineering and Technology , vol. 5, no. 2,2020
9. P. Vijay Varma N. Rajasekhar, T. Hymavathi, V. Himasre, T. Leela Praasad “Investigation on Reconfigurable Inverted F-Shaped Monopole Antenna for Dual Band Applications” in Trends in Microwave Engineering and Technology , vol. 5, no. 1,2020
10. N.Rajasekhar, R Ramana Reddy, Naresh K. Darimireddy, M.Kalpana, “Design of Pentagonal Dielectric Resonator Antenna for X-Band Applications” in IETE 49th Midterm Symposium (MTS-2018) 8-9 April,2018, AU–VISAKHAPATAM.
11. N.Rajasekhar, R Ramana Reddy, Naresh K. Darimireddy, “Performance Analysis of Dual Band Triangular Dielectric Resonator Antenna ” in IETE 49th Midterm Symposium (MTS-2018) 8-9 April,2018, AU–VISAKHAPATAM
12. M.Hemani, A.Mounica,K.Kranti Kumar, N.Rajasekhar, “Aperture Coupled Symmetric Dielectric Resonators For X- Band Applications” in 3rd ICRISEM-International Conference on Recent innovations in Science and Management , 27th February ,2016, Sri venkateswara college of engineering and technology, Srikakulam
13. S.Sai Divya,  P.Devi,  T.Vinodh Kumar,  U.Chandra Mouli ,N.Rajasekhar “Multi Slot UWB Antennas To Minimize The Interferences From WLAN & X-BAND Applications” in IOSR Journal of Electronics and Communication Engineering, vol. 12, no. 1,Jan-feb 2017.
14. B.Praveen kumar,  Ch.Ramesh kumar, D.Balaaditya, N.Rajasekhar “Hybrid Z-Shaped Cylindrical Dielectric Resonator Antenna” in IJESC Journal of Engineering science and computing, vol. 7, no. 4 ,Apr  2017.
15. M.Hemani, A.Mounica,K.Kranti Kumar, N.Rajasekhar “Aperture Coupled Symmetric Dielectric Resonators For X- Band Applications” in IJEEE Journal of  electrical  and  Electronics Engineering, vol. 8, no. 1 ,Apr  2016.
16. P.Venkata Mounica,  S.Teja Srinivas,  L.Pavani,  P.Navya, N.Rajasekhar “Aperture Coupled Dielectric Resonator Antenna For S- Band And Wimax Applications” in IJESC  Journal of Engineering science and computing, vol. 6, no. 4 ,Apr  2016.
17. P.K.R.Manohar, M.Pratyusha, R.Satheesh, S. Geetanjali, N.Rajasekhar “Audio Compression Using Daubechie Wavelet” in IOSR Journal of Electronics and Communication Engineering, vol. 10, no. 2 ,Apr  2015.
18. K. Sarath Chandra Varma, Ch. Kranthi Kumar, K. Sravan kumar, D. Sharat Chandra varma, N.Rajasekhar “Design and Simulation of 64-Point FFT Using Radix-4 Algorithm for OFDM Applications” in IOSR Journal of Electronics and Communication Engineering vol. 10, no. 2 ,Apr  2015.
19. G.Hari Priya, B.Venkatesh, A.Srivani, G.Sowmya, N.Rajasekhar “Noise Removal in Image Using LPG-PCA (Local Pixel Grouping-Principle Component Analysis) Algorithm” in IOSR Journal of Electronics and Communication Engineering ,vol. 9, no. 1 ,Feb  2014.
20. S. Bindu, S. Prudhvi, G. Hemalatha, N. Raja Sekhar, V. Nanchariah “Object Detection from Complex Background Image Using Circular Hough Transform” in International Journal of Engineering Research and Applications, vol. 4, no. 4 ,Apr  2014.
21. V.Nancharaiah, Sk.Azeez, N.Raja Sekhar “Image Smoothing By Low Gradient Minimization” in IOSR Journal of Electronics and Communication Engineering, vol. 8, no. 3, Dec 2013.
22. V.Nancharaiah, N.Raja Sekhar “Fault Secure System for Nano Memories Using Eg-Ldpc Codes” in International Journal of Scientific Research in Computer Science Applications and Management Studies, vol. 2, no. 5, Sep 2013.
23. G. NagaHari Priya, N. Raja Sekhar,V. Nancharaiah “Peak Side Lobe Levels of Legendre and Rudin-Shapiro Sequences: Families of Binary Sequences” in International Journal of Engineering and Innovation Technology, vol. 3, no. 3, Oct 2013.

1. Naresh K. Darimireddy, N. Rajasekhar, R. Ramana Reddy, M. Suneeyamu, “Modified plus-Shaped Microstrip Patch Antenna with DGS for Ultra Wide-Band Applications” in IEEE Wireless, Antennas and Microwave Symposium (IEEE-WAMS), 07-10 June. 2023, Gandhinagar, Gujarat. (Accepted and to be Published in IEEE Xplore)
2. N. Rajasekhar, R Ramana Reddy, RunaKumari, R. Sowjanya, “Performance analysis of Conical DRA with various feeding techniques” in IEEE Indian Conference on Antennas and Propagation (IEEE-InCAP), 19-22 Dec. 2019, Ahmadabad. (Published in IEEE Xplore and Indexed in WOS)
3. N. Rajasekhar, R Ramana Reddy, Naresh K. Darimireddy, “Compact Multi-layer Circurlarly Polarized Hexagonal-Spiral Antenna for Wireless Applications” in IEEE Indian Conference on Antennas and Propagation (IEEE-InCAP), 16-19 Dec. 2018, Hyderabad. (Published in IEEE Xplore and Indexed in WOS)
4. N. Rajasekhar, R Ramana Reddy, Naresh K. Darimireddy, P.Srinivas Rao, “Rhombic Slotted Pentagonal Patch Antenna for GPS Applications” in IEEE Indian Conference on Antennas and Propagation (IEEE-InCAP), 16-19 Dec. 2018, Hyderabad. (Published in IEEE Xplore and Indexed in WOS)
5. N. Rajasekhar, R Ramana Reddy, Naresh Kumar Darimireddy, “V-Shaped Slits and Slot Loaded Pentagonal Boundary Patch Antennas for Wideband Applications” in IEEE iAIM-2017, 23-27 Nov. 2017, Bangalore. (Published in IEEE Xplore and Indexed in WOS)

IE,IEEE,IETE