Millimeter wave portal imaging system

A hybrid portal concealed weapon and contraband imaging and detection system comprising:

• A) a nuclear quadrupole resonance detector, and
• B) a portal contraband screener comprising a plurality of millimeter wave sensors, each of said plurality of millimeter wave sensors comprising:
• 1) at least one millimeter wave frequency scanning antenna for collecting frequency dependent beams of millimeter wave radiation from a narrow one-dimensional field of view;
• 2) a fast switch for calibration;
• 3) a millimeter wave amplifier for amplifying at the collected frequencies said millimeter wave radiation, said amplifier comprising at least three MMIC amplifiers fabricated on an indium phosphate substrate and a band pass filter;
• 4) a beam-former for separating said amplified collected radiation to produce frequency dependent signals corresponding to said frequency dependent beams, said beam-former comprising:
• a) a plurality of delay lines,
• b) a millimeter wave lens, and
• c) a plurality of millimeter wave power detectors;
• and
• 5) a sampling circuit for reading out frequency dependent signals to produce a one-dimensional image of the antenna field of view, and
• 6) focusing means for focusing the sensor.