Publications

Frequency and Bandwidth Tunable Band Pass Filters

Multi-Functional Band Pass Filters : Filtering Balun, Filtering Power Divider and Filtering Antenna

FSS based Band Pass Filter and Antenna

Band Pass Filters : Single Mode and Multi-Mode

Power Combiners : Multi-Functional Power Combining Transitions

Passive and Active Antennas

Other Components: Mono-Pulse Comparator and Frequency Tripler

Journals and Transactions (28)

1. R. R. Mansour, G. Basavarajappa and S. M. Pourjaafari, "High-Q Tunable Bandpass Filters With a Wide Tuning Range Using a Minimum Number of Tuning Elements," in IEEE Microwave Magazine, doi: 10.1109/MMM.2025.3572869.

2. I. Suryarajitha, R. Jawale, G. Basavarajappa, H. H. Sigmarsson, R. K. Panigrahi and M. V. Kartikeyan, "An Innovative H-Plane Filtering Horn Antenna in Substrate-Integrated Waveguide Technology," in IEEE Transactions on Components, Packaging and Manufacturing Technology, vol. 15, no. 5, pp. 1072-1080, May 2025, doi: 10.1109/TCPMT.2025.3534821

3. R. Jawale, S. Inapurapu, G. Basavarajappa and H. Sigmarsson, "A Novel Multifunctional E-Plane Metal Septum-Based Filtering Horn Antenna," in IEEE Antennas and Wireless Propagation Letters, vol. 24, no. 3, pp. 666-670, March 2025, doi: 10.1109/LAWP.2024.3511594

4. Kalyan Mohan Patnaik, Gowrish Basavarajappa and Hjalti Sigmarsson, "An Innovative Design Methodology of a Novel Multifunctional All-Pole Filtering Horn Antenna," in IEEE Microwave and Wireless Technology Letters, vol. 35, no. 1, pp. 35-38, Jan. 2025, doi: 10.1109/LMWT.2024.3496875

5. Joseph, N. S., Kumar, M., & Basavarajappa, G. (2025). Design of the Multifunctional Filtering Power Divider in Substrate Integrated Waveguide Technology for Power Combining Applications. IETE Journal of Research, 1–9. https://doi.org/10.1080/03772063.2025.2497055

6. Manoj Kumar, Gowrish Basavarajappa: A novel compact multifunctional coaxial to waveguide power combining transitions for X-band applications. IET Microw. Antennas Propag. 18(12), 1164–1174, 2024.

7. Kalyan Mohan Patnaik, Gowrish Basavarajappa, and Raafat Mansour, "A dual mode circular waveguide cavity resonator based frequency tunable band pass filter using a single tuning element", Microwave and Optical Technology Letters, Wiley Publications, Volume 66, Issue 9, September 2024. https://doi.org/10.1002/mop.34343 

8. M. A. Shukoor, A. Z. Ahmad, M. Kumar, S. Dey, G. Basavarajappa and K. Rawat, "Design of Miniaturized Active Matching Network Integrated Ultra-Broadband VHF/UHF Monopole Antenna for Direction Finding Array Applications," in IEEE Antennas and Wireless Propagation Letters, vol. 23, no. 8, pp. 2436-2440, Aug. 2024.  doi: 10.1109/LAWP.2024.3394864 

9. Manoj Kumar and Gowrish Basavarajappa, "Tunable Microstrip Bandpass Filter With Constant Absolute Bandwidth Using BST Varactors and Digitally Tunable Capacitors " in International Journal of Microwave and Wireless Technologies (IJMWT), Cambridge Press, 2024.

10. Manoj Kumar and Gowrish Basavarajappa, "Design Methodology of Multifunctional Balun Filters Based on Modified Coupling Matrix," in IEEE Transactions on Instrumentation and Measurement, vol. 73, pp. 1-10, 2024, Art no. 8000810, doi: 10.1109/TIM.2023.3332940.

11. Kalyan M. Patnaik and Gowrish Basavarajappa (2023): A novel miniaturized waveguide all pole band pass filter using confined multi-layered frequency selective surfaces, IET Electronics Letters, Vol. 59: e13059. https://doi.org/10.1049/ell2.13059 

12. Kalyan M. Patnaik, and Gowrish Basavarajappa (2023): A configuration to double the gain of pyramidal horn antenna using single layer frequency selective surface, IET Microwaves, Antennas and Propagation (IET MAP). 18(1), 35–42 (2023). https://doi.org/10.1049/mia2.12437 (Top Cited Article : Wiley IET MAP, 2023 Publication)

13. Gowrish Basavarajappa, "A Ferrite Transformer Based Power Divider with 400:1 Bandwidth", in Microwave Journal, Vol. 66, Ed. 06, June 2023.

14. Gowrish Basavarajappa and R. R. Mansour, "An Efficient EM-Based Synthesis Technique for Single-Band and Dual-Band Waveguide Filters," in IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, vol. 41, no. 6, pp. 1687-1692, June 2022.

15. B. Gowrish & Shiban K. Koul (2022) Broadband Multi-Stub PCB Monopole Antenna, IETE Journal of Education, 63:2, 57-62  

16. B. Gowrish and R. R. Mansour, "A Tunable Quarter-Wavelength Coaxial Filter With Constant Absolute Bandwidth Using a Single Tuning Element," in IEEE Microwave and Wireless Components Letters, vol. 31, no. 6, pp. 658-661, June 2021.

17. B. Gowrish, S. K. Koul and R. R. Mansour, "Transversal Coupled Triple-Mode Spherical Resonator-Based Bandpass Filters," in IEEE Microwave and Wireless Components Letters, vol. 31, no. 4, pp. 369-372, April 2021.

18. B. Gowrish & Shiban K. Koul (2021) Designing RF and Microwave Band Pass Filters Using Coupled Resonators, IETE Journal of Education, 62:1, 6-11.

19. B. Gowrish & Shiban K. Koul (2021) Analysis of Transmission Line with Distributed Series Voltage Sources Using Green’s Function, IETE Journal of Education, 62:1, 21-28.

20. B. Gowrish and R. R. Mansour, "A Novel Bandwidth Reconfigurable Waveguide Filter for Aerospace Applications," in IEEE Microwave and Wireless Components Letters, vol. 30, no. 6, pp. 577-580, June 2020.

21. Gowrish. B and R. R. Mansour, "A High-Q Quadruple-Mode Rectangular Waveguide Resonator," in IEEE Microwave and Wireless Components Letters, vol. 29, no. 5, pp. 324-326, May 2019.

22. Gowrish. B and R. R. Mansour, "Design Methodology of a High- Q Tunable Coaxial Filter and Diplexer," in IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 12, pp. 5005-5015, Dec. 2019.

23. Gowrish B. and Ananjan Basu (2019) Deriving Poynting Theorem – A Student-Friendly Approach, IETE Journal of Education, 60:2, 91-94.

24. Gowrish. B and R. R. Mansour, "Design Methodology of a Tunable Waveguide Filter With a Constant Absolute Bandwidth Using a Single Tuning Element," in IEEE Transactions on Microwave Theory and Techniques, vol. 66, no. 12, pp. 5632-5639, Dec. 2018.

25. Gowrish B. and Ananjan Basu (2017) Analysis and Design of a Dual-Band Stepped Impedance PCB Monopole Antenna, IETE Journal of Education, 58:1, 29-38. (IETE Student Journal Award)

26. Gowrish. B., S. Reddy D., A. V. G. Subramanyam, V. S. Kumar and V. V. Srinivasan, "Mono-Pulse Comparator in Rectangular Co-Axial Guide for Satellite Ground Station," in IEEE Microwave and Wireless Components Letters, vol. 26, no. 9, pp. 666-668, Sept. 2016.

27. Gowrish B., Rahul Kumar & Ananjan Basu (2015) Smith Chart-based Design of a Dual Band Real Impedance Matching Network, IETE Journal of Education, 56:2, 43-50. (IETE Student Journal Award)

28. K. Rawat, G. Gowrish, G. Ajmera, A. Basu, S.K. Koul, "Design scheme for broadband Doherty power amplifier using broadband load combiner", Wiley International Journal of RF and Microwave Computer-Aided Engineering, vol. 25, Issue 8, pages 655–674, Oct 2015.

Conferences (31)

1. M. Kumar and G. Basavarajappa, "A Multi-Functional Circularly Polarized All Pole Filtering Conical Horn Antenna," 2025 IEEE/MTT-S International Microwave Symposium - IMS 2025, San Francisco, CA, USA, 2025, pp. 525-527, doi: 10.1109/IMS40360.2025.11103998.

2. I. Suryarajitha, G. Basavarajappa, R. K. Panigrahi and M. V. Kartikeyan, "A Compact Millimeter-Wave Phase Shifter Integrated Variable Coupler in SIW Technology for Beam-Forming Applications," 2025 IEEE/MTT-S International Microwave Symposium - IMS 2025, San Francisco, CA, USA, 2025, pp. 694-697, doi: 10.1109/IMS40360.2025.11103787.

3. R. Jawale and G. Basavarajappa, "An Interactive Application for the Design of a Pyramidal Horn Antenna Using Rectangular Waveguide Technology," 2025 Third International Conference on Microwave, Antenna and Communication (MAC), Bhopal, India, 2025, pp. 1-4, doi: 10.1109/MAC64480.2025.11140077.

4. Vinay Krishnan, and Gowrish Basavarajappa "Design and Development of  A High Gain Planar Yagi Uda Antenna", accepted in 2025 IEEE WAMS, March 2025.

5. Manoj Kumar, Gowrish Basavarajappa and Karun Rawat, "Design of Multifunctional Filtering Power Divider in Coaxial Technology for Power Combining Applications ", in 2024 IEEE/MTT-S International Microwave Symposium - IMS 2024, Washington, DC, USA, 2024.

6. Manoj Kumar, Gowrish Basavarajappa, Kaushik Manjanbail, and A K Singh,  "Design of an 8-Way 20kW Co-Axial Radial Power Combiner for High Power S-Band Applications", in IEEE SPace, Aerospace and defenCE conference 2024 (IEEE SPACE 2024) - Bengaluru, India.

7. Manoj Kumar and Gowrish Basavarajappa, "A Compact E-Plane Sectoral Waveguide Power Combiner for Ku Band SATCOM Applications", in IEEE SPace, Aerospace and defenCE conference 2024 (IEEE SPACE 2024) - Bengaluru, India. (Best Paper Award)

8. N. S. Joseph and G. Basavarajappa, "A Novel Filtering Balun Implemented in Substrate Integrated Waveguide Technology," 2024 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Hyderabad, India, 2024, pp. 1-4, doi: 10.1109/MAPCON61407.2024.10923244.

9. G. Basavarajappa, "A Novel Multi-Functional Coupled Resonator Based Balun Filter in Waveguide Technology," 2023 IEEE/MTT-S International Microwave Symposium - IMS 2023, San Diego, CA, USA, 2023. 

10. Manoj Kumar and Gowrish Basavarajappa, "A Temperature Compensated Light Weight Coaxial Band Pass Filter for Aero-Space Applications," 2023 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Ahmedabad, India, 2023, pp. 1-4, doi: 10.1109/MAPCON58678.2023.10463991.

11. Mansi Goyal and Gowrish Basavarajappa, "A Wearable IoT Based Assistive Device to Aid Communication With Hearing Impaired," 2023 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Ahmedabad, India, 2023, pp. 1-4, doi: 10.1109/MAPCON58678.2023.10464174.

12. Ahmed Abdalla Ibrahim Mohamed, Manoj Kumar and Gowrish Basavarajappa,  "Design and Development of THz Pyramidal Horn Antenna from 220 GHz to 330 GHz," 2023 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Ahmedabad, India, 2023, pp. 1-4, doi: 10.1109/MAPCON58678.2023.10463804 . 

13. A. Kumar, A. Vishwakarma, H. Kumar, G. Basavarajappa and K. Rawat, "An Inexpensive Drone and RF Emitter Tracking System Using Monopulse Comparator," 2023 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Ahmedabad, India, 2023, pp. 1-4, doi: 10.1109/MAPCON58678.2023.10464105 

14. G. Basavarajappa, "A High Performance Rectangular Waveguide Band Pass Filter for 5G Communication Systems," 2023 IEEE Wireless Antenna and Microwave Symposium (WAMS), Ahmedabad, India, 2023, pp. 1-3, doi: 10.1109/WAMS57261.2023.10242948.

15. G. Kumar Daga and G. Basavarajappa, "A Novel Broadband 3D Pyramidal Antenna for UWB Applications," 2022 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Bangalore, India, 2022 

16. Gowrish. B and R. R. Mansour, "Applications of Double Mapping for Design Reutilization," 2022 IEEE/MTT-S International Microwave Symposium (IMS), Denver, CO, USA, 2022.

17. Gowrish. B and R. R. Mansour, " A Tunable Quarter-wavelength Coaxial Filter With Constant Absolute Bandwidth Using a Single Tuning Element," 2021 IEEE/MTT-S International Microwave Symposium (IMS), Atlanta, GA, USA, 2021.

18. Gowrish. B and R. R. Mansour, "A Dual-Mode Frequency Reconfigurable Waveguide Filter with a Constant Frequency Spacing between Transmission Zeros," 2020 IEEE/MTT-S International Microwave Symposium (IMS), Los Angeles, CA, USA, 2020.

19. Gowrish. B. and R. R. Mansour, "A Tunable Coaxial Filter with Minimum Variations in Absolute Bandwidth and Q using a Single Tuning Element," 2019 IEEE MTT-S International Microwave Symposium (IMS), Boston, MA, USA, 2019. (Best Advanced Paper Award)

20. Gowrish. B and R. R. Mansour, "A Tunable Waveguide Filter Designed with a Constantan Absolute Bandwidth Using a Single Tuning Element," 2018 IEEE/MTT-S International Microwave Symposium - IMS, Philadelphia, PA, USA 2018. (Best Student Paper Award - Finalist)

21. Gowrish. B, A. B. Kiran and A. Ramaprasad, "Cluster analysis of a decade of Indian space activities based on an ontological framework," 2017 International Conference On Smart Technologies For Smart Nation (SmartTechCon), Bangalore, 2017.

22. Gowrish. B and R. Kumar, "Analysis of amplitude and phase imbalances on efficiency of microwave power combiner," 2017 International Conference On Smart Technologies For Smart Nation (SmartTechCon), Bangalore, 2017.

23. Gowrish. B, R. Kumar and A. Basu, "Radiation enhancement in PCB plane using novel multi-stub inverted F antenna," 2016 IEEE Annual India Conference (INDICON), Bangalore, 2016.

24. D. S. Reddy, Gowrish. B, V. K. Velidi, A. V. G. Subramanyam, V. V. Srinivasan and Y. Mehta, "Virtual negative coupling in folded waveguide cavity filter for space applications," 2015 IEEE MTT-S International Microwave and RF Conference (IMaRC), Hyderabad, 2015.

25. Gowrish. B, A. Basu and S. K. Koul, "Novel non radiative dielectric guide frequency tripler at 60 GHz," 2014 IEEE International Microwave and RF Conference (IMaRC), Bangalore, 2014.

26. Gowrish. B and A. Basu, "Measurement based chip impedance determination on validation board," TENCON 2014 - 2014 IEEE Region 10 Conference, Bangkok, 2014.

27. Gowrish. B and A. Basu, "Casing and hand effect on PCB antenna in 2.4 GHz wireless mouse: A measurement based characterization," Proceedings of 2014 3rd Asia-Pacific Conference on Antennas and Propagation, Harbin, 2014.

28. Gowrish. B, D. John, D. Settu, A. Basu and S. K. Koul, "Novel mechanical reconfigurable PCB antenna for 2.4 GHz wireless consumer product: Minimizing time to market," Proceedings of 2014 3rd Asia-Pacific Conference on Antennas and Propagation, Harbin, 2014.

29. Gowrish. B, A. Bhat, A. B. Kiran and K. Rawat, "Optimal finite bit Pi representation," 2014 IEEE REGION 10 SYMPOSIUM, Kuala Lumpur, 2014.

30. K. Rawat et al., "Design strategy for tri-band Doherty power amplifier," WAMICON 2014, Tampa, FL, 2014.

31. Gowrish. B, K. Rawat, A. Basu and S. K. Koul, "Broad-band matching network using band-pass filter with device parasitic absorption," 82nd ARFTG Microwave Measurement Conference, Columbus, OH, 2013.