Journal
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume 66, Issue 3, Pages 1628-1632Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2018.2790430
Keywords
Electromagnetic bandgap (EBG) structures; frequency-selective surface (FSS); high-efficiency transmission; polarization conversion; radar cross section (RCS) reduction
Funding
- 973 Program of China [2013CBA01700]
- National Natural Science Funds [61475160, 61605213, 61775218]
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In this communication, we propose a method to achieve high-efficiency transmission and wideband scattering reduction at two distinctive frequency bands by combining frequency-selective surface (FSS) and electromagnetic bandgap (EBG) surface. Such FSS-EBG surface is composed of two-layered metallic patterns. The bottom FSS layer works as a filter for allowing in-band signal to pass and reflecting out-of-band signal, while the top EBG layer adopts 0 and pi reflection phase cells with a chessboard distribution to reduce the backward scattering wave. As a proof-of-concept demonstration, the planar and cylindrical surfaces are, respectively, designed to verify such two functionalities. Our FSS-EBG surface can make the antenna signal transmit at S-band with small insertion loss and simultaneously provide wideband low-scattering property at X-Ku band, which is suitable to be used as the stealth antenna radome. In addition, the possibility of integrating polarization conversion function into the passing band is numerically demonstrated.
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