In this paper, we propose a periodic structure that is capable of alternating between absorption and radiation mode. The designed periodic structure consists of an array of 6×6 square shaped unit cell. Each unit cell consists of a multi-layered structure, with dimensions of 0.5¿×0.5¿. The resonators are placed on the top layer and the feeding network is designed and implemented on the bottom layer. The ground layer
is sandwiched between the two dielectric substrates. All resonators are conne...
In this paper, we propose a periodic structure that is capable of alternating between absorption and radiation mode. The designed periodic structure consists of an array of 6×6 square shaped unit cell. Each unit cell consists of a multi-layered structure, with dimensions of 0.5¿×0.5¿. The resonators are placed on the top layer and the feeding network is designed and implemented on the bottom layer. The ground layer
is sandwiched between the two dielectric substrates. All resonators are connected to a 50 feed-line using the corporate feeding technique. To achieve broadband absorption, lumped resistors are inserted into the
resonators. The proposed metasurface structure achieves broadband radiation, with low RCS and high gain, in the propagation direction whereas broadband absorption is achieved, when it is exposed to a free space
plane wave. Moreover, the metamaterial absorber has stable absorptivity for an incident angle of (0¿–30¿).
To verify the in-band absorption and radiation of the proposed design, a 6×6 periodic array of resonators has been fabricated and experimentally verified in an anechoic chamber. The measured results validate the
performed simulations.
In this paper, we propose a periodic structure that is capable of alternating between absorption and radiation mode. The designed periodic structure consists of an array of 6×6 square shaped unit cell. Each unit cell consists of a multi-layered structure, with dimensions of 0.5¿×0.5¿. The resonators are placed on the top layer and the feeding network is designed and implemented on the bottom layer. The ground layer
is sandwiched between the two dielectric substrates. All resonators are connected to a 50 feed-line using the corporate feeding technique. To achieve broadband absorption, lumped resistors are inserted into the
resonators. The proposed metasurface structure achieves broadband radiation, with low RCS and high gain, in the propagation direction whereas broadband absorption is achieved, when it is exposed to a free space
plane wave. Moreover, the metamaterial absorber has stable absorptivity for an incident angle of (0¿–30¿).
To verify the in-band absorption and radiation of the proposed design, a 6×6 periodic array of resonators has been fabricated and experimentally verified in an anechoic chamber. The measured results validate the
performed simulations.
Citation
Ur Rahman, S. [et al.]. Design of wideband beamforming metasurface with alternate absorption. "IEEE access", 14 Gener 2020, vol. 8, p. 21393-21400.