Improvement of the Scanning Performance of the Extended Hemispherical Integrated Lens Antenna Using a Double Lens Focusing System

N.T. Nguyen (1) , A.V. Boriskin (1) , L. Le Coq (1) , R. Sauleau (1)

1 IETR - Institut d'Électronique et des Technologies du numéRique

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° 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. © 2016 IEEE.

Keywords: Antennas; Dielectric materials; Microwave antennas; Millimeter waves; Optical instrument lenses; Scanning antennas; Double lens (DL) system; Field of views; Immersion lens; Integrated lens antennas; Millimeter-wave antennas; Objective lens; Lens antennas

Domains: Computer Science [cs]; Networking and Internet Architecture [cs.NI]; Engineering Sciences [physics]; Electronics

N.T. Nguyen, A.V. Boriskin, L. Le Coq, R. Sauleau. Improvement of the Scanning Performance of the Extended Hemispherical Integrated Lens Antenna Using a Double Lens Focusing System. IEEE Transactions on Antennas and Propagation, 2016, 64 (8), pp.3698--3702. ⟨10.1109/TAP.2016.2572227⟩. ⟨hal-01368136⟩