Free-form two-mirror antenna for millimeter wave imaging

Vasyl Molebny; Vyacheslav Sokurenko; Jinghui Qiu

doi:10.1117/12.2565665

20 May 2020 Free-form two-mirror antenna for millimeter wave imaging

Vasyl Molebny, Vyacheslav Sokurenko, Jinghui Qiu

Proceedings Volume 11411, Passive and Active Millimeter-Wave Imaging XXIII; 114110L (2020) https://doi.org/10.1117/12.2565665
Event: SPIE Defense + Commercial Sensing, 2020, Online Only

Abstract

Free-form two-mirror antenna for millimeter wave imaging has been modeled using a proprietary software for optical systems design PODIL. Optimization procedure is based on adaptive Cauchy differential evolution method, the principal features of which allow efficient global optimization. The system of two mirrors has the 300 mm aperture stop, and both mirrors have 380 mm the larger size. Their profiles are described by the 7th order Zernike polynomials. Pick-to-valley height difference is 18.037 mm and 35.60 mm for primary and secondary mirror correspondingly. The system allows 20- degree field of view. The RMS of the focal plane spot diagram is balanced with variations within 0,54 … 0.64 mm. 90% of energy in the focal plane over the total field of view is contained within the quadratic zones with the sides 1.6 mm. The antenna can have a focusing function.

Conference Presentation

Citation Download Citation

Vasyl Molebny, Vyacheslav Sokurenko, and Jinghui Qiu "Free-form two-mirror antenna for millimeter wave imaging", Proc. SPIE 11411, Passive and Active Millimeter-Wave Imaging XXIII, 114110L (20 May 2020); https://doi.org/10.1117/12.2565665

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