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Volume 26 - ICOP & ICPET 2020
ICOP & ICPET _ INPC _ ICOFS 2020, 26 - ICOP & ICPET 2020: 545-548 |
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Jadidi F, Asadnezhad M, Eslami majd A, Erfaniyan A, Mohseni Armaki S H. Design and simulation of an aspheric quasi-optical millimeter wave imaging system in 220 GHz. ICOP & ICPET _ INPC _ ICOFS 2020; 26 :545-548
URL: http://opsi.ir/article-1-2115-en.html
URL: http://opsi.ir/article-1-2115-en.html
Faeze Jadidi *1 
, Mohammad Asadnezhad , Abdollah Eslami majd1 , Alireza Erfaniyan1 , Seyed hossein Mohseni Armaki1
, Mohammad Asadnezhad , Abdollah Eslami majd1 , Alireza Erfaniyan1 , Seyed hossein Mohseni Armaki1
1- Department of Electrical and Computer Engineering, Maleke-ashtar University of Technology, Tehran.
Abstract: (1776 Views)
In this paper, a quasi-optical millimeter wave imaging system is designed at central frequency of 220 GHz. This system includes a combination of an aspheric dielectric lens in order to focus the beam and a conical horn to form resolution less than 20 mm at distance of 2.5 meters. The general parameters of this system are calculated using the geometrical optics method and the optical design software ZEMAX was utilized to simulate the lens. The designed dielectric lens is made of High Density Polyethylene and the aperture diameter of the system is 21 cm. Then, an optimum conical horn with gain 20 dB is designed that couple the concentrated radiation to detector. The simulation of the horn is performed using the commercial softwares FEKO and CST and the simulation results indicate that its combination with dielectric lens is appropriate for imaging in 220 GHz with high resolution.
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