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Multi focus imaging radar using two pair of inline Tx/Rx printed antennas has been proposed. Antipodal Fermi antennas have been employed both for Tx/Rx antennas. Basic characteristics of the proposed imaging radar including the effect of offset of Tx/Rx antennas have been discussed by experiments. Imaging of conducting rods located on styrofoam with 250mm range, and scissors and gun have been performed...
A compact receiver module for a 94 GHz band passive millimetre-wave (PMMW) imaging system is developed. This receiver module consists of an antipodal linearly tapered slot antenna (LTSA) and microwave monolithic integrated circuit (MMIC) with flip-chip bonding assembly that provides high radio frequency (RF) performance at low cost. A new microstrip-slot transition developed for the LTSA/MMIC interface...
We have developed an antipodal linearly tapered slot antenna (LTSA) with corrugation for a 94-GHz band passive millimeter-wave (PMMW) imaging system. We propose a compact microstrip-slot transition for the antenna interface. Transmission loss of the transition is about 1.7 dB @94 GHz. We also present a design procedure for a circular radiation pattern for the antipodal LTSA which is well suited to...
The broadband FDTD analysis of the Fermi antenna as a receiving element of passive millimeter-wave imaging is presented. The Fermi antenna is a type of the tapered slot antennas (TSA) and has a taper profile expressed by Fermi-Dirac function as well as a corrugation on the side of the substrate. A design of Fermi antenna with the axially symmetric radiation pattern was already reported in our previous...
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