Journal
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume 64, Issue 8, Pages 3698-3702Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2016.2572227
Keywords
Double lens (DL) system; field of view (FoV); immersion lens; integrated lens antenna (ILA); millimeter-wave antennas; objective lens
Funding
- European Science Foundation
- FUI Program (ACC)
- GENCI [2014-050779]
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We demonstrate that an integrated lens antenna (ILA) with a double lens (DL) focusing system can provide simultaneously a high broadside directivity and a low scan loss over a wide angular range. The proposed DL ILA system consists of a hemispherical substrate lens and a planoconvex objective lens. A prototype of a high-gain DL ILA with lenses made of a low permittivity dielectric material is fabricated and characterized in the frequency range of 75-79 GHz. The realized scan loss in terms of gain within a +/- 30 degrees field of view is <1.1 dB in both planes. The performance of the DL ILA is compared with that of two hemispherical ILAs designed to provide the best broadside directivity and the lowest scan loss, respectively.
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