A Programmable Active THz Electromagnetic Surface on-Chip for Multi-functional Imaging

An integrated THz imager is proposed with an actively reconfigurable electromagnetic interface that can engineer the surface reception properties to reconfigure its sensitivity and aperture for three incident field properties, namely frequency, polarization and incident angle. The chip realized in a 65 nm CMOS process achieves upto 15x enhancement in responsivity and NEP across 0.1-0.99 THz and enables a programmable and versatile THz interface for hyperspectral, multi-angle and multi-polarization imaging.

[1]  Ehsan Afshari,et al.  Active Terahertz Imaging Using Schottky Diodes in CMOS: Array and 860-GHz Pixel , 2013, IEEE Journal of Solid-State Circuits.

[2]  Janusz Grzyb,et al.  A broadband 0.6 to 1 THz CMOS imaging detector with an integrated lens , 2011, 2011 IEEE MTT-S International Microwave Symposium.

[3]  Zhao-yang Liu,et al.  A CMOS Fully Integrated 860-GHz Terahertz Sensor , 2017, IEEE Transactions on Terahertz Science and Technology.

[4]  Kaushik Sengupta,et al.  25.3 A 40-to-330GHz synthesizer-free THz spectroscope-on-chip exploiting electromagnetic scattering , 2016, 2016 IEEE International Solid-State Circuits Conference (ISSCC).

[6]  David R. Smith,et al.  Terahertz compressive imaging with metamaterial spatial light modulators , 2014, Nature Photonics.