Ultra Wide X-Band Microwave Imaging of Concealed Weapons and Explosives Using 3D-SAR Technique

Table 1

Results on transmission tests on clothes.

Garments	Max. frequency for which attenuation <1 dB	Max. attenuation in the whole 1–40 GHz band
#1 leather jacket (100% leather)	20 GHz	1 dB
#2 cotton shirt (100% cotton)	16 GHz	2 dB
#3 thick sweater (50% wool, 50% acrylic)	20 GHz	1 dB
#4 lightweight wool jacket (100% wool)	20 GHz	1 dB
#5 shirt (80% cotton and 20% polyester)	20 GHz	1 dB
#6 parka (waterproof canvas filled)	17 GHz	2 dB
#7 wool jacket (100% wool)	16.5 GHz	1 dB
#8 waterproof jacket (inner side: 100% cotton; outer side: 100% polyester)	16 GHz	2 dB