Aspheric dielectric lens antenna for millimeter-wave imaging system
The imaging systems require low aberration and large depth of focus (DOF) to get an acceptable sharpness of the image. The lens antenna consists of a dielectric lens and an antenna array on the focus plane of the lens which has a great effect on the imaging quality of the system. In this paper, an a...
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Published in | 2015 Asia-Pacific Microwave Conference (APMC) Vol. 3; pp. 1 - 3 |
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Main Authors | , , , , |
Format | Conference Proceeding |
Language | English |
Published |
IEEE
01.12.2015
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Subjects | |
Online Access | Get full text |
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Summary: | The imaging systems require low aberration and large depth of focus (DOF) to get an acceptable sharpness of the image. The lens antenna consists of a dielectric lens and an antenna array on the focus plane of the lens which has a great effect on the imaging quality of the system. In this paper, an aspheric biconvex lens with an aperture diameter of 430 mm is designed in W-band which could obtain a beam spot with a diameter of less than 30 mm. The dielectric lens with an object distance of 3.50 m is made of High Density Polyethylene which has a dielectric constant of 2.3 at 89 GHz. The designed antenna array is one-dimensional array with horn antennas. The test results indicate that the lens antenna proposed in this paper has a spatial resolution of almost 27.5 mm at the object plane and the depth of focus is 1.6 m. |
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ISBN: | 9781479987658 1479987654 |
DOI: | 10.1109/APMC.2015.7413384 |