Publications, Uday Khankhoje

My ORCID ID is 0000-0002-9629-3922 and my Google Scholar page is here.

Journals

1. Deep-learning Enabled Generalized Inverse Design of Multi-Port Radio-frequency and Sub-Terahertz Passives and Integrated Circuits
   Emir Karahan, Zheng Liu, Aggraj Gupta, Zijian Shao, Jonathan Zhou, Uday Khankhoje, Kaushik Sengupta; Nature Communications (accepted), 2024.

2. Optimum Beamforming and Grating Lobe Mitigation for Intelligent Reflecting Surfaces
   Sai Sanjay Narayanan, Uday K Khankhoje, Radha Krishna Ganti; IEEE Transactions on Antennas and Propagation; 72(11), pp.8540-8553, 2024. DOI: 10.1109/TAP.2024.3463805 (link, PDF, arXiv:2404.09215)

3. Reference-free fault diagnosis and corrected field prediction in a planar antenna array
   Prajosh K P, Francesco Ferranti, Uday K Khankhoje; IEEE Antennas and Wireless Propagation Letters; 23(2), pp.743-747, 2023. DOI: 10.1109/LAWP.2023.3335464 (link, PDF).

4. Subsurface Radar Imaging by Optimizing Sensor Locations in Spatio-Spectral Domains
   Chandan Bhat, Maria Antonia Maisto, Uday K. Khankhoje, and Raffaele Solimene; IEEE Transactions on Geoscience and Remote Sensing; vol (61), pp.1-10, 2023. DOI: 10.1109/TGRS.2023.3305154 (link, PDF).

5. Tandem Neural Network based Design of Multi-band Antennas
   Aggraj Gupta, Chandan Bhat, Emir Karahan, Kaushik Sengupta, Uday Khankhoje; IEEE Transactions on Antennas and Propagation; 71(8), pp. 6308-17, 2023. DOI: 10.1109/TAP.2023.3276524 (link, PDF).

6. Spotting faults over the spectrum: Fast and online antenna array fault diagnosis for multi-carrier precoding systems
   Sreekar Sai Ranganathan, Prajosh K P, Uday K Khankhoje, Francesco Ferranti; IEEE Transactions on Wireless Communications; 22(10), pp. 7025-7037, 2023. DOI: 10.1109/TWC.2023.3247727 (link, PDF).

7. Efficient Mutual-Coupling Aware Fault Diagnosis of Phased Array Antennas using Optimized Excitations
   Prajosh K P, Sreekar Sai Ranganathan, Francesco Ferranti, Uday K Khankhoje; IEEE Antennas and Wireless Propagation Letters; 21(9), pp. 1906-10, 2022. DOI: 10.1109/LAWP.2022.3184758(link, PDF)

8. Inverse imaging using total field measurements
   Chandan Bhat, Uday K Khankhoje; IEEE Geoscience and Remote Sensing Letters; vol(19) pp. 1-5 2022. DOI: 10.1109/LGRS.2022.3158021, (link, PDF),
   Media coverage: Tech-Talk, Indian Express

9. Phase unwrapping of coarsely sampled maps using higher-order methods
   Bhargav Ghanekar, Uday K Khankhoje; IEEE Transactions on Geoscience and Remote Sensing; vol (60), pp. 1-11, 2021. DOI: 10.1109/TGRS.2021.3128565, (link, PDF).

10. Electromagnetic field imaging in arbitrary scattering environments
    Karteekeya Sastry, Chandan Bhat, Raffaele Solimene, Uday K Khankhoje; IEEE Transactions on Computational Imaging; vol (7), pp. 224-233 2021. DOI: 10.1109/TCI.2021.3055982,(link, PDF).

11. Element excitation optimization for phased array fault diagnosis
    Prajosh K P, Uday K Khankhoje, and Francesco Ferranti; Journal of Electromagnetic Waves and Applications; 35(1) pp. 39-50 2020. DOI: 10.1080/09205071.2020.1825123, (link, PDF).

12. Compressive sensing approaches for prediction of scattered electromagnetic fields
    Chandan Bhat, Karteekeya Sastry, Uday K Khankhoje; Journal of the Optical Society of America A; 37(7) 2020. DOI: 10.1364/JOSAA.388136, (link, PDF)
    Featured in a curated collection of 15 most-downloaded articles on Scattering and Propagation in 2020 from the Journal of the Optical Society of America A.

13. Iteratively reweighted l1-l2 norm minimization using wavelets in inverse scattering
    Yash Sanghvi, Hrishitosh Bisht, Uday K. Khankhoje, V. M. Gadre, and S. V. Kulkarni; Journal of the Optical Society of America A; 37(4), pp. 680-687 2020. DOI: 10.1364/JOSAA.381365, (link).

14. Reconstructing dispersive scatterers with minimal frequency data
    Yaswanth Kalepu, Yash Sanghvi, and Uday K Khankhoje; IEEE Geoscience and Remote Sensing Letters; 18(1), pp. 62-66 2020. DOI: 10.1109/LGRS.2020.2968256, (link, PDF).

15. Accurate Estimation of Brillouin Frequency Shift in Brillouin Optical Correlation Domain Analysis
    Yaswanth Kalepu, Bhargav Somepalli, Uday Khankhoje, Deepa Venkitesh, and Balaji Srinivasan; IEEE OSA Journal of Lightwave Technology; 37(23), pp 5875-84 2019. DOI: 10.1109/JLT.2019.2941499 (link, PDF).

16. Embedding Deep Learning in Inverse Scattering Problems
    Yash Sanghvi, Yaswanth Kalepu, and Uday K Khankhoje; IEEE Transactions on Computational Imaging; 6(1) pp. 46-56 2019. DOI: 10.1109/TCI.2019.2915580 (link, PDF, code)
    Media coverage: The Hindu.

17. Stochastic Solutions to Rough Surface Scattering using the finite element method
    Uday K Khankhoje and Shreyas Padhy; IEEE Transactions on Antennas and Propagation, 65(08); 2017. DOI: 10.1109/TAP.2017.2715366 (link, PDF)

18. Cavity enhanced second order nonlinear photonic logic circuits
    Rahul Trivedi, Uday K Khankhoje, and Arka Majumdar; Physical Review Applied, 5(5) pp. 054001-1:8; 2016. DOI: 10.1103/PhysRevApplied.5.054001 (link, PDF).

19. Generalized terrain topography in radar scattering models
    Mariko Burgin, Uday K Khankhoje, Xueyang Duan, and Mahta Moghaddam; IEEE Transactions on Geoscience and Remote Sensing, 54(7) pp. 3944-3952; 2016. DOI: 10.1109/TGRS.2016.2532123 (link, PDF).

20. Inverse scattering using a joint L1-L2 based regularization
    Pratik Shah, Uday K Khankhoje, and Mahta Moghaddam; IEEE Transactions on Antennas and Propagation, 64(4) pp. 1373-1384; 2016. DOI: 10.1109/TAP.2016.2529641 (link, PDF).

21. A perturbative solution to plane wave scattering from a rough dielectric cylinder
    Rahul Trivedi and Uday K Khankhoje; IEEE Transactions on Antennas and Propagation, 63(9) pp.4069-4080; 2015. DOI: 10.1109/TAP.2015.2452968 (link, PDF).

22. On the accuracy of averaging radar backscattering coefficients for bare soils using the finite element method
    Uday K Khankhoje, Mariko Burgin, and Mahta Moghaddam; IEEE Geoscience and Remote Sensing Letters, 11(8) pp. 1345-1349; 2014. DOI: 10.1109/LGRS.2013.2293392 (link, PDF).

23. A mesh reconfiguration scheme for speeding up Monte Carlo simulations of electromagnetic scattering by random rough surfaces
    Uday K Khankhoje and Thomas A Cwik; Computer Physics Communications, 185(2), pp. 445-447, 2014. DOI:10.1016/j.cpc.2013.03.005 (link, PDF).

24. Computation of radar scattering from heterogeneous rough soil using the finite element method
    Uday K Khankhoje, Jakob van Zyl, and Thomas Cwik; IEEE Transactions on Geoscience and Remote Sensing, 51(6), pp.3461 - 3469, June 2013. DOI:10.1109/TGRS.2012.2225431 (link, PDF).

25. Progress in growth, fabrication, and characterization of semiconductor photonic crystal nanocavities
    Richards, B. C., Hendrickson, J., Olitzky, J. D., Gibson, R., Gehl, M., Kieu, K., Polynkin, P., Khitrova, G., Gibbs, H. M.; Khankhoje, U. K., Homyk, A., Scherer, A.; Kim, J.-Y. and Lee, Y.-H.; Physica Status Solidi (b), Vol. 248, Issue 4, pp. 892-896, April 2011. DOI: 10.1002/pssb.201000853 (link, PDF).

26. Characterization of 1D Photonic Crystal Nanobeam Cavities Using Curved Microfiber
    B. C. Richards, J. Hendrickson, J. D. Olitzky, R. Gibson, M. Gehl, K. Kieu; U. K. Khankhoje, A. Homyk, A. Scherer; J.-Y. Kim, Y.-H. Lee, G. Khitrova, and H. M. Gibbs; Optics Express, Vol. 18, Issue 20, pp. 20558-20564, 2010. DOI: 10.1364/OE.18.020558 (link, PDF).

27. Modelling and Fabrication of GaAs Photonic-Crystal Cavities for Cavity Quantum Electrodynamics
    U K Khankhoje, S-H Kim, B C Richards, J Hendrickson, J Sweet, J D Olitzky, G Khitrova, H M Gibbs and A Scherer; Nanotechnology 21, 065202 (7pp), 2010. DOI: 10.10880957-4484216065202 (link, PDF).

28. GaAs photonic crystal slab nanocavities: growth, fabrication, and quality factor
    J. Sweet, B. C. Richards, J. D. Olitzky, J. Hendrickson, G. Khitrova, H. M. Gibbs; D. Litvinov, D. Gerthsen, D. Z. Hu, D. M. Schaadt, M. Wegener; U. Khankhoje, and A. Scherer; Photonics and Nanostructures - Fundamentals and Applications, vol. 8, no. 1, pp. 1-6, 2010. DOI: 10.1016/j.photonics.2009.10.004 (link, PDF).

29. Optimal Fractional Fourier Domains for Quadratic Chirps
    Uday Khankhoje, V. M. Gadre; IETE Journal of Research, Vol. 52, No. 1, pp. 65-70, January-February 2006. DOI: 10.1080/03772063.2006.11416441 (link, PDF)

Books / Chapters / Technical Reports

1. Learning and Teaching in a time of Pandemic (book chapter)
   co-authored by Cynthia Furse, Levent Sevgi, Berardi Sensale Rodriguez, Uday Khankhoje, Hugo Espinosa in a book titled Teaching electromagnetics: Innovative approaches and pedagogical strategies, edited by Karl Warnick and Krishnasamy Selvan, CRC Press, Taylor & Francis group, USA/UK, DOI, book review 2020

2. Method of Moments for computing electromagnetic scattering from a rough cylinder
   Rahul Trivedi and Uday K Khankhoje; link (math.NA), 2015.

3. Spatial bandlimitedness of scattered electromagnetic fields
   Uday K Khankhoje and Kushal Shah; link (physics.optics), 2015.

Conferences (peer reviewed and invited)

+ denotes presenting author

1. Transfer learning based microstrip antenna design
   Aggraj Gupta+, Uday K Khankhoje; IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting in Florence, Italy, July 14–19, 2024.

2. Data-efficient and ultra-fast surrogate models for simulating nanophotonic power-splitters
   Aggraj Gupta+, Uday K Khankhoje; IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting in Florence, Italy, July 14–19, 2024.

3. Design approaches for identical transmitter and receivers for long distance OAM communication
   Chandan Bhat, Karthik P B, Anant Goyal+, Uday K Khankhoje; IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting in Florence, Italy, July 14–19, 2024.

4. A metasurface approach to mitigate misalignment challenges in wireless power transfer systems
   Anant Goyal+, Uday K Khankhoje; IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting in Florence, Italy, July 14–19, 2024.

5. Discrete variable beamforming for intelligent reflecting surfaces
   Sai Sanjay Narayan, Radha Krishna Ganti, Uday K Khankhoje+; IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting in Florence, Italy, July 14–19, 2024.

6. Recent progress in fault diagnosis of phased antenna arrays using excitation engineering
   Uday Khankhoje+, Prajosh K P, Sreekar Sai Ranganathan, Francesco Ferranti; IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting in Portland, Oregon, USA, July 23–28, 2023. (link, PDF)

7. Efficient fault diagnosis in an antenna array incorporating mutual coupling
   K P Prajosh+, Uday K Khankhoje, Francesco Ferranti; IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Bangalore, India, 12-16 Dec 2022. (link)

8. Machine learning based tandem network approach for antenna design
   Aggraj Gupta+, Chandan Bhat, Emir Karahan, Kaushik Sengupta, Uday Khankhoje; IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting in Denver, Colorado, USA, July 10-15, 2022. (link, PDF)

9. Deep Learning based Modeling and Inverse Design for Arbitrary Planar Antenna Structures at RF and Millimeter-Wave
   Emir Ali Karahan+, Aggraj Gupta, Kaushik Sengupta, Uday K Khankhoje; IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting in Denver, Colorado, USA, July 10-15, 2022. (link)

10. Fault diagnosis by a novel compressed sensing technique in a phased array with cosine squared element patterns
    Prajosh K. P.+, U K Khankhoje, F Ferranti; 15th European Conference on Antennas and Propagation (EuCAP) 2021. (link)

11. Electromagnetic field prediction - scattered and total field approaches
    C Bhat+, K Sastry, R Solimene, UK Khankhoje;15th European Conference on Antennas and Propagation (EuCAP) 2021. (link)

12. Accurate BFS Estimation in Simultaneous Multi-Point Sensing Based on External Modulation BOCDA
    Somepalli, B., Yaswanth, K., Khankhoje, U., Venkitesh, D., & Srinivasan, B; Asia Communications and Photonics Conference (pp. M3G-3). Optical Society of America 2020. (link)

13. Spatial prediction of undersampled electromagnetic fields
    Karteekeya Sastry DVSSN+, Chandan Bhat, Uday K Khankhoje; PIERS, June 17-20, Rome, Italy 2019. (link, PDF

14. Retrieval of soil moisture using sliced regression inversion technique
    Siddhant Gautam+, Niharika Guntru, Sakees C, Uday K Khankhoje; PIERS, June 17-20, Rome, Italy 2019. (link, PDF)

15. Applications of deep learning in inverse scattering
    Yash Sanghvi, Yaswanth Kalepu, Uday K Khankhoje+ ; PIERS, June 17-20, Rome, Italy 2019

16. Microwave Imaging for Breast Cancer Detection
    Invited talk at Global Nanophotonics Initiative 2018, Tata Institute of Fundamental Research, 9 Dec 2018

17. Spatial Prediction of Electromagnetic Fields Using Few Measurements
    Chandan Bhat+, Ankit Gupta, Radhakrishna Ganti, Uday Khankhoje; PIERS, Aug 1-4, Toyama,Japan 2018. (link)
    +Awarded an honourable mention in the Best Student Paper Competition at the conference.

18. Recent Advances in Inverse Microwave Imaging (Invited Talk)
    Uday Khankhoje; PIERS, Aug 1-4, Toyama, Japan 2018

19. Deconvolution Algorithm for Accurate Estimation of Brillouin Frequency in Brillouin Optical Correlation Domain Analysis
    Bhargav Somepalli+, Deepa Venkitesh, Uday Khankhoje, Balaji Srinivasan; Optical Fiber Sensors (OFS) Lausanne, Switzerland 2018.

20. An Irrotationality Preserving Total Variation Algorithm for Phase Unwrapping
    Bhargav Ghanekar+, Dipak Narayan+, and Uday K Khankhoje; NCC 2018, Feb 25-28, Hyderabad, 2018. (link)

21. Quantification of Uncertainty in Radar Backscatter Due to Variable Soil Moisture
    Uday K Khankhoje; PIERS, Nov 19-22, Singapore, 2017. Slides

22. Two Dimensional Microwave Imaging Using a Divide and Unite Algorithm
    Disha Shur, K. Yaswanth, and Uday K Khankhoje+; PIERS Proceedings, Nov 19-22, Singapore, 2017. (link, PDF)

23. Two-dimensional Non-linear Microwave Imaging with Total Variation Regularization
    K. Yaswanth and Uday K Khankhoje+; PIERS Proceedings, Nov 19-22, Singapore, 2017. (link, PDF)

24. Validation of Generalized Radar Scattering Model for Sloped Terrain with Airborne L- and P-band Data
    Mariko S. Burgin+, Xueyang Duan, Richard Chen, Uday K. Khankhoje, and Mahta Moghaddam; PIERS, Nov 19-22, Singapore, 2017.

25. Algebraic reconstruction techniques for inverse imaging
    K Yaswanth+, S Bhattacharya, U K Khankhoje; International Conference on Electromagnetics in Advanced Applications (ICEAA 2016), Sept 19-23, Cairns (Australia), 2016. (link, PDF)

26. Polarization response of a cloud of rough cylinders
    R Trivedi and U K Khankhoje+; International Conference on Electromagnetics in Advanced Applications (ICEAA 2016), Sept 19-23, Cairns (Australia), 2016. (link, PDF)

27. A perturbative solution to plane wave scattering from a rough dielectric cylinder
    Rahul Trivedi+ and Uday K Khankhoje; PIERS Proceedings, 1254 - 1258, July 6-9, Prague (Czech Republic), 2015. (link, PDF)

28. Scattered electromagnetic fields and their bandlimited properties
    Invited talk at the National Conference on Communications (NCC) 2015 at IIT Bombay, 28th February, 2015.

29. Joint l1-l2 regularization for inverse scattering
    Pratik Shah+, Uday K Khankhoje, and Mahta Moghaddam; IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting in Memphis, Tennessee, USA, July 6-11, 2014 (Abstract

30. Generalized radar scattering model including terrain topography
    Mariko Burgin+, Uday K Khankhoje, Xueyang Duan, and Mahta Moghaddam; IEEE Geoscience and Remote Sensing Society (IGARSS) in Quebec City, Canada, July 13-18 2014 (Abstract

31. On the accuracy of sub-pixel backscatter averaging for bare soils
    Uday K Khankhoje, Mariko Burgin, and Mahta Moghaddam+; 13th URSI Commission F Triennial Open Symposium on Radiowave Propagation and Remote Sensing, Ottawa, Canada, April 29-May 3 2013 (Invited talk).

32. Enceladus’ Brilliant Surface: RADAR Modeling
    U. K. Khankhoje, K. L. Mitchell+, J. C. Castillo-Rogez, M. Janssen; 44th Lunar and Planetary Science Conference, Lunar &; Planetary Institute, Houston at The Woodlands, Texas, March 18-22 2013. Abstract #2531 (PDF).

33. Enceladus’ Brilliant Surface: Cassini RADAR observations &; interpretation
    K. L. Mitchell+, U. K. Khankhoje, J. C. Castillo, S. D. Wall and the Cassini RADAR Team; 44th Lunar and Planetary Science Conference, Lunar &; Planetary Institute, Houston at The Woodlands, Texas, March 18-22 2013. Abstract #2902 (PDF).

34. Using Polarimetric Sar Data To Infer Soil Moisture From Surfaces With Varying Subsurface Moisture Profiles
    Uday Khankhoje, Jakob van Zyl+, Yunjin Kim, Thomas Cwik; IEEE Geoscience and Remote Sensing Society (IGARSS) in Munich, Germany July 2012 (link)

35. Estimating soil moisture from a varying subsurface profile
    Jakob van Zyl+, Yunjin Kim, Uday Khankhoje; IEEE Geoscience and Remote Sensing Society (IGARSS) in Vancouver, Canada, July 25-29 2011.

36. Fabrication and characterization of one-dimensional photonic crystal nanobeam cavities in Si
    B. Richards+, J. Hendrickson, J. D. Olitzky, R. Gibson, K. Kieu, G. Khitrova, H. Gibbs, U. Khankhoje, A. Homyk, A. Scherer, J.-Y. Kim, and Y.-H. Lee; Nonlinear Optics and Excitation Kinetics in Semiconductors (NOEKS) in Paderborn, Germany, August 2010.

37. Design and Fabrication of an Electrically Pumped 1D Nanobeam Laser in GaAs
    Uday K. Khankhoje, Jingqing Huang+, Axel Scherer; Photonics in Switching, OSA Technical Digest (CD) (Optical Society of America), paper JTuB42, July 2010. (link).

38. Fabrication and Characterization of Slab Microcavities
    U. Khankhoje+, A. Scherer; D. Litvinov, D. Gerthsen, M. Wegener; G. Khitrova, J. Sweet, B. C. Richards, J. Hendrickson, and H. M. Gibbs. The 39th Winter Colloquium on the Physics of Quantum Electronics, Snowbird Utah, January 2009. (PDF).

39. Emission Characteristics of Quantum Dots in Photonic Crystal Nanocavities
    B. C. Richards+, J. Hendrickson, J. Sweet, C. Christenson, M. Pajor, D. Lam, G. Khitrova, H. M. Gibbs; A. Scherer, U. Khankhoje. Montana Meeting on Fundamental Optical Processes in Semiconductors (FOPS), July 2007. (PDF).