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Title: Compound diffractive lens consisting of fresnel zone plate and frequency selective screen
Authors: Fan, Y.
Ooi, B.-L. 
Hristov, H.D.
Leong, M.-S. 
Keywords: Focusing
Frequency selective surface (FSS)
Fresnel zone plate (FZP)
Microwave lens
Issue Date: Jun-2010
Citation: Fan, Y., Ooi, B.-L., Hristov, H.D., Leong, M.-S. (2010-06). Compound diffractive lens consisting of fresnel zone plate and frequency selective screen. IEEE Transactions on Antennas and Propagation 58 (6) : 1842-1847. ScholarBank@NUS Repository.
Abstract: We describe a new Fresnel zone plate (FZP) and frequency selective screen (FSS) compound lens consisting of a binary FZP and FSS. The FZP has eight circular zones totally, four open and four closed, and the FSS is a square array of 40 × 40 four-leg loaded elements cut in a thin metal sheet. The FZP-FSS lens is designed for a paraxial plane-wave illumination at the frequency of 12 GHz, with a focal length of 15 cm. The compound lens is simulated and analyzed numerically by means of a specially developed hybrid PSTD-FDTD algorithm and software. The PSTD-FDTD results are contrasted with those obtained by lens prototype measurements. As a result, some attractive focusing and spectral properties of the FZP-FSS lens compared to the same-size FZP lens have been found: a frequency filtering property enhancement, about 2 dB increase in the peak focusing intensity, and more than 4 dB reduction of the first off-axis maximum. Both lenses have roughly the same transverse angular resolution. © 2010 IEEE.
Source Title: IEEE Transactions on Antennas and Propagation
ISSN: 0018926X
DOI: 10.1109/TAP.2010.2046849
Appears in Collections:Staff Publications

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