Portal de Periódicos da CAPES

A High-Resolution Imaging Radar at 580 GHz

2008; IEEE Microwave Theory and Techniques Society; Volume: 18; Issue: 1 Linguagem: Inglês

10.1109/lmwc.2007.912049

1558-1764

Ken B. Cooper, Robert J. Dengler, Goutam Chattopadhyay, Erich Schlecht, J. Gill, A. Skalare, Imran Mehdi, Peter H. Siegel,

Acoustic Wave Resonator Technologies

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 design based on Schottky diode sensors and sources. By employing the frequency-modulated continuous wave (FMCW) radar technique, we achieve centimeter-scale range resolution while utilizing fractional bandwidths of less than 3%. Our high operating frequencies also permit centimeter-scale cross-range resolution at several-meter standoff distances without large apertures. Scanning of a single-pixel transceiver enables targets to be rapidly mapped in three dimensions, and here we apply this technology to the detection of concealed objects on persons.