Elpub

Abstract: Terahertz (THz) imaging holds promise in a wide range of application fields due to the penetration ability of THz radiation, in combination with a relatively low wavelength, as compared to radar, which facilitates generating sharp images. However, existing THz imaging techniques typically rely…

The objective of this study is to show the potential of amorphous indium gallium zinc oxide (a-IGZO) thin film transistors (TFT) for designing RF communication systems operating in the GHz regime. For that purpose, the self-mixing operation of in-house fabricated IGZO-TFTs beyond their transit frequency…

In this paper, a silicon lens-integrated CMOS THz camera is employed as a compact antenna test range. The far-field radiation pattern of a 26-dBi 0.852-THz standard gain horn antenna radiation source is characterized. Both single-frame low-resolution and multi-frame super-resolution acquisition are performed.…

This paper presents the concept of a lens-integrated CMOS camera-type terahertz (THz) compact antenna test range (CATR) to determine the far-field characteristics of transmitters (TX), including the radiation pattern, directivity, half-power beamwidth (HPBW), and radiation power. For concept validation,…

An array of terahertz sources in 0.13 μm SiGe BiCMOS has previously been developed to mitigate the well-known issue of low available power from compact terahertz sources. However, the device projects beams toward different, non-overlapping directions, rendering it unsuitable for use as a general-purpose…

We employ a lens-coupled CMOS terahertz camera to measure the dispersion of an inexpensive reflective diffraction grating. Thus, although the terahertz camera was originally intended for terahertz imaging applications, we show that it can be re-purposed to perform spectral analysis. Two different experiments…

In this paper, we present a comprehensive study to understand the image formation and associated resolution limitations of hyper-hemispherical high-resistivity floating-zone silicon (HRFZ-Si) lens-integrated terahertz (THz) cameras, and we extend this understanding into THz super-resolution imaging applications.…

This paper presents a terahertz source system-on-a-chip (SoC) specifically designed for computational imaging with a single pixel camera (SPC). The SoC consists of an 8×8 array of independent, frequency unlocked THz sources that together radiate maximum 10.3 dBm power at 0.42 THz. Each source pixel is…

In this paper, we discuss the design choices of CMOS THz cameras for achieving maximum angular resolution and high sensitivity over a large bandwidth. In an active THz imaging set-up, the spatial resolution becomes a function of the object magnification, determined by the focal length of the collimating…