There has been intense interest in the use of millimetre wave and terahertz technology for
the detection of concealed weapons, explosives and other threats. Radiation at these …

The techniques and technologies currently being investigated to detect weapons and
contraband concealed on persons under clothing are reviewed. The basic phenomenology …

We have developed a high-resolution imaging radar at 580 GHz. Coherent illumination in
the 576-589 GHz range and phase-sensitive detection are implemented in an all-solid-state …

Terahertz spectroscopy has been investigated as a technique for concealed explosives
detection since spectroscopic signatures in common explosives were first identified almost …

This paper presents a 0.32 THz 4x4 imaging array based on an advanced SiGe technology.
Each pixel is composed of a high efficiency on-chip antenna meeting all metal-density rules …

The combination of the all solid-state terahertz (THz) technology and synthetic aperture
radar imaging technique leads to small imaging sensors of high resolution. In this paper, we …

This paper presents the design and characterization of single-chip 220-GHz heterodyne
receiver (RX) and transmitter (TX) monolithic microwave integrated circuits (MMICs) with …

We report the first submillimeter-wave imaging system that has radar ranging capabilities. By
frequency-modulating the K-band synthesizers of a single-pixel 630 GHz scanning vector …

There has been increased interest in applying radio frequency (RF) imaging to solving
problems in surveillance, situational awareness, and security screening. This has been …

The useful compromise between resolution and penetration power of the submillimeter or
terahertz (THz) spectral region has long made it attractive for a variety of imaging …