Frequency-Selective Rasorber With a Wide High-Transmission Passband Based on Multiple Coplanar Parallel Resonances

Wang, Lingling; Liu, Shaobin; Kong, Xiangkun; Zhang, Haifeng; Yu, Qiming; Wen, Yongdiao

doi:10.1109/lawp.2019.2962223

Cited by 66 publications

(33 citation statements)

References 14 publications

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“…12 with an air spacer thickness of h 2 = 16 mm. The operation principle of rasorbers have been introduced in details in [1]- [25]. The basic idea behind a reconfigurable rasorber is to tune the passbands of FSS and resistive layer simultaneously, so that their transmission bands are always matched and a tunable transmission window can be created for the rasorber.…”

Section: Ecm Vs Simulation Results Of Rasorbermentioning

confidence: 99%

“…A. Munk [1]. Later on, a couple of EM rasorbers with detailed theoretical analysis and experimental validation have been reported [2]- [25]. In terms of physical geometry, the existing rasorbers can be divide into lateral (or 2D) and 3D devices.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, a 2D EM rasorber consists of a 2D resistive layer on top and a 2D frequency selective surface (FSS) underneath. A quarter wavelength air gap between resistive layer and FSS is usually required in lateral devices [2]- [17] while their 3D counterparts are based on parallel-plate waveguide structures with subwavelength thickness [18]- [25]. The advantages of 3D rasorber compared with the lateral ones include broad transmission bandwidth, improved selectivity and stability under oblique incidence.…”

Section: Introductionmentioning

confidence: 99%

“…However, the resultant narrow transmission band is not favored in broadband applications. Although high-order FSS has also been used in rasorber design to achieve broad transmission bandwidth and fast roll-off characteristic [25], [28], the reciprocity of EM wave transmission within the passband degrades its stealth performance.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Reconfigurable Frequency Selective Rasorber Covering Extremely Wide Transmission Frequency Range

et al. 2020

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Section: Ecm Vs Simulation Results Of Rasorbermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reconfigurable Frequency Selective Rasorber Covering Extremely Wide Transmission Frequency Range

et al. 2020

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“…Rasorber consisting of frequency selective surface (FSS) and resistive layer can reduce the radar cross‐section (RCS) of antennas within its absorption band(s) while allows the radiated wave to transmit through within its passband 1‐14 . Since 2009, a number of rasorbers with narrow transmission band have been reported, in which absorption bands were achieved at the frequencies above (i.e., T‐A type), 1‐3 below (i.e., A‐T type) 4,5 and on both sides 6,7 (i.e., A‐T‐A type) of the transmission band.…”

Section: Introductionmentioning

confidence: 99%

Switchable rasorber with high‐order frequency selective surface for transmission bandwidth extension

Tian

et al. 2021

Micro & Optical Tech Letters

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Switchable rasorber operating between rasorbing and absorbing states can effectively improve its stealth performance within the passband. However, the existing switchable rasorbers utilize single‐order frequency selective surfaces (FSSs), limiting their transmission bandwidth. This work proposes a switchable rasorber with expanded passband utilizing high‐order FSS. First, the switching principle of high‐order FSS is presented, which is then used to design the rasorber with an extended transmission band. The simulated results and experimental verification of the proposed switchable rasorber are also presented. Compared with the existing switchable rasorbers, the proposed device demonstrates the widest fractional transmission bandwidth of 17% and a minimum insertion loss of 0.54 dB in rasorbing state. In the absorbing state, the passband is eliminated and the device exhibits a single absorption band with fractional bandwidth of 89.3%.

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Miniaturized frequency selective rasorber with a X‐band transmission band using cross band resonator

Ren

Jia

Zhai

et al. 2021

Int J RF Microw Comput Aided Eng

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This article designs a miniaturized frequency selective absorber (FSR) based on X‐band. The FSR consists of a resistor sheet and a bandpass frequency selective surface (FSS). It has a wide low frequency absorption band and a low insertion loss wide high frequency transmission band. The resistor element is a hexagonal metal ring with lumped resistance. Each side of the ring is inserted with three cross metal branches. The branch is equivalent to the λh/4 short‐circuit branch. Three types of branches with different lengths can be used to achieve wide‐band transmission. The band‐pass FSS is a three‐layer structure, which is composed of two layers of circular metal patches and a layer of circular aperture. The band‐pass FSS must coincide with the transmission band of the resistor sheet. The resistor sheet is placed on the band‐pass FSS. At low frequencies, FSR functions as an absorber. The absorption bandwidth of 10 dB is 2.2 to 6.3 GHz. At high frequencies, the transmission band is almost transparent. At this time, the 1 dB transmission bandwidth is 8.1 to 12.1 GHz. FSR has good angular stability and polarization stability. A prototype of the structure was made and measured to verify the correctness of the design.

show abstract

Frequency-Selective Rasorber With a Wide High-Transmission Passband Based on Multiple Coplanar Parallel Resonances

Cited by 66 publications

References 14 publications

Reconfigurable Frequency Selective Rasorber Covering Extremely Wide Transmission Frequency Range

Reconfigurable Frequency Selective Rasorber Covering Extremely Wide Transmission Frequency Range

Switchable rasorber with high‐order frequency selective surface for transmission bandwidth extension

Miniaturized frequency selective rasorber with a X‐band transmission band using cross band resonator

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