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26 November 2019 Numerical three-step phase-shifting microwave holography
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Phase-shifting microwave holography utilizes the antennas to record the hologram. In this technique, the antenna has to perform two-dimensional (2-D) scanning over the test area corresponding to each phase shift in the reference wave. A numerical three-step phase-shifting is proposed for recording the microwave holograms in which only a single 2-D scan over an area is recorded experimentally whereas two remaining phase shifts are introduced numerically. This method is applied for imaging of metallic objects to inspect the feasibility of the proposed method. The qualitative results exhibit its effectiveness while reconstructing the amplitude and phase of an object at a microwave frequency of 8.5 GHz (or λ  =  35.29  mm).

© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2019/$28.00 © 2019 SPIE
Vineeta Kumari, Neelam Barak, and Gyanendra Sheoran "Numerical three-step phase-shifting microwave holography," Optical Engineering 58(11), 114107 (26 November 2019).
Received: 4 September 2019; Accepted: 14 November 2019; Published: 26 November 2019

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