Research

ICaSL works at the intersection of electromagnetics and integrated circuits.  Our research interests are in high frequency integrated circuits, reconfigurable metamaterials/metasurfaces, electromagnetics & antenna design, and computational sensing/imaging.  We are interested in advancing end-to-end communication and sensor systems spanning from microwaves to terahertz frequencies. Our research has broad-range of applications in the areas of communications, imaging, biomedical sensing, machine-learning, and edge/node computing.

Google Research Page of Prof. Suresh Venkatesh

Selected Publications

1. Active Reconfigurable Surfaces & Metasurfaces

  1. S.Venkatesh, X. Lu, H.Saeidi, K.Sengupta, “A High-Speed Programmable and Scalable Terahertz Holographic Metasurface based on Tiled CMOS Chips“, Nature Electronics, 2020. Cover Feature Article
  2. S. Venkatesh*,H. Saeidi*, X. Lu, K. Sengupta, Active Tunable Millimeter-wave Reflective Surface across 57-64 GHz for Blockage Mitigation and Physical Layer Securit, RFIC 2022.
  3. C. Wu, Y. Ma, S. Venkatesh, et al., “A Monolithically Integrable Reconfigurable Antenna Based on Large-Area Electronics,” in IEEE Journal of Solid-State Circuits, 2024. 
  4. S. Venkatesh, D. Shrekenhamer, W. Xu, S. Sonkusale, W. J. Padilla, and D. Schurig, “Interferometric direction finding with a metamaterial detector,” Applied Physics Letters, vol.103, no.25, 2013.
  5. D.Shrekenhamer, W. Xu, S. Venkatesh, D. Schurig, S. Sonkusale, and W. J. Padilla, “Experimental Realization of a Metamaterial Detector Focal Plane Array,” Phys.Rev.Lett., vol.109, p.177401, Oct.2012.

2. Millimeter-Wave and Terahertz Chip Scale Systems

  1. S. Venkatesh*, X. Lu*, B. Tang, K. Sengupta, “Secure space–time-modulated millimetre-wave wireless links that are resilient to distributed eavesdropper attacks “,  Nature Electronics, 2021.
  2. X. Lu*, S. Venkatesh*, et.al., “Physical Layer Security Through Directional Modulation With Spatio-Temporal Millimeter-Wave Transmitter Arrays,” in IEEE JSSC, 2024.
  3.  H. Saeidi*, S. Venkatesh*, et.al, “THz Prism: One-Shot Simultaneous Multi-Node Angular Localization Using Spectrum-to-Space Mapping with 360-to-400GHz Broadband Transceiver and Dual-Port Integrated Leaky-Wave Antennas“, ISSCC 2021.
  4. H. Saeidi*, S. Venkatesh*, X. Lu and K. Sengupta, “THz Prism: One-Shot Simultaneous Localization of Multiple Wireless Nodes With Leaky-Wave THz Antennas and Transceivers in CMOS,” in IEEE JSSC, 2021
  5. X. Lu*, S. Venkatesh*, B. Tang, K. Sengupta, “Space-Time Modulated 71-to-76GHz mm-Wave Transmitter Array for Physically Secure Directional Wireless Links “, ISSCC 2020.
  6. H. Saeidi*, S. Venkatesh*, et.al., “A 4×4 Distributed Multi-Layer Oscillator Network for Harmonic Injection and THz Beamforming with 14dBm EIRP at 416GHz in a Lensless 65nm CMOS IC“, ISSCC 2020.

3. Computational Imaging and Sensing Systems

  1. S. Venkatesh, et al. “Origami Microwave Imaging Array: Metasurface Tiles on a Shape‐Morphing Surface for Reconfigurable Computational Imaging” Advanced Science 9.28 (2022), Cover Feature Article.
  2. H. Tang, S. Venkatesh,et al., “High Sensitivity and High Throughput Magnetic Flow CMOS Cytometers with 2D Oscillator Array and Inter-Sensor Spectrogram Cross-correlation,” in IEEE Transactions on Biomedical Circuits and Systems, 2024
  3. S. Venkatesh, N. Viswanathan, and D. Schurig, “W-band sparse synthetic aperture for computational imaging,” Opt.Express, vol.24, no.8, pp.8317–8331, 2016. 
  4. N. Viswanathan, S. Venkatesh, D. Schurig, “Optimization of a Sparse Aperture Configuration for Millimeter wave Computational Imaging,” in IEEE Trans. Antenna and Propagation, 2020.
  5. S. Venkatesh, D. Schurig, “Transformation Optics Design of a Planar Near Field Magnifier for Sub-wavelength Imaging,” Optics Express, 27, 4694-4713, Feb 2019
  6. S. Venkatesh and D. Schurig, “Computationally fast EM field propagation through axi-symmetric media using cylindrical harmonic decomposition,” Opt.Express, vol.24, no.25, pp.29246–29268, Dec2016.
  7. H. M. Bernety, S. Venkatesh, D. Schurig, “Fast ,Analytical Calculation of the Far-field for Arbitrarily-Oriented Antenna Arrays,” IEEE Transactions on Antennas and Propagation, 2018, 66 (6), 2911-2922 .
*Equal Contribution