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Title: Thin 3-D bandpass frequency-selective structure based on folded substrate for conformal radome applications
Authors: Omar, Ahmed Abdelmottaleb
Shen, Zhongxiang
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Omar, A. A. & Shen, Z. (2019). Thin 3-D bandpass frequency-selective structure based on folded substrate for conformal radome applications. IEEE Transactions On Antennas and Propagation, 67(1), 282-290.
Journal: IEEE Transactions on Antennas and Propagation
Abstract: A new design method based on a folded substrate is proposed in this paper to reduce the thickness of 3-D bandpass frequency-selective structure (FSS). A 67% and 79% thickness reduction compared to the basic 3-D bandpass FSS is achieved by employing three-layer and five-layer folded substrates, respectively. Single-and dual-polarized designs are presented. By integrating one more substrate with a different dielectric constant, dual-band thin structure is achieved. One structure with a five-layer folded substrate is designed, fabricated, and measured using the parallel-plate waveguide measurement setup. It has a center frequency of 3.57 GHz with 26.9% transmission bandwidth. The structure thickness is only 0.06λ , where λ is the free-space wavelength at the center frequency of the passband. Stable frequency response is achieved under oblique incidence. A good agreement is accomplished between simulated and measured results. Moreover, a semicylindrical radome is constructed based on the thin 3-D FSS and integrated with a broadband horn antenna. The radiation characteristics of the entire antenna-radome system are finally investigated and its good filtering feature is demonstrated. A fabricated prototype of this radome is measured in the presence of a broadband horn antenna.
ISSN: 0018-926X
DOI: 10.1109/TAP.2018.2876706
Rights: © 2018 IEEE. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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