Low-RCS Reflectarray Antenna Based on Frequency Selective Rasorber

Sun, Zhanshan; Chen, Qiang; Guo, Min; Fu, Yunqi

doi:10.1109/lawp.2019.2901267

Cited by 30 publications

(8 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2,3 These are used in radome structures and hence these are termed as rasorbers (Radome and absorbers) or FSR. 4,5 Radomes are structures commonly used on military aircraft and ships to protect against electromagnetic interference (EMI) and to provide stealth technology. Radomes are made of materials that block or reflect signals in the radio frequency range, making them difficult for radar to detect.…”

Section: Introductionmentioning

confidence: 99%

Low profile polarization‐insensitive wideband rasorber with in‐band transmission

Sambhav

Ghosh

2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

A dual-polarized wide-band rasorber with in-band transmission has been presented in this study. Our proposed design comprises a modified swastika design on the upper layer and a square slotted design on the bottom layer. The top layer is loaded with lumped resistors on the top pattern in an even manner resulting in broadband absorption. The square slot designed on the lower layer is accountable for in-the-band transmission. The total thickness of the design is only 0.058 λ L (λ L corresponds to the lowest frequency) and possesses strong fractional bandwidth of around 124%. The whole design shows a wideband absorption whose reflection coefficient is less than À10 dB from 1.7 to 7.25 GHz, and an insertion loss of 0.6 dB in the transmission band at 4.9 GHz. The originality of the proposed design lies in its miniaturized design, good angular stability, high fractional bandwidth, and dual-polarized response. For a comprehensive analysis, we have investigated the distribution of surface current, its corresponding circuit model, and several other parameters. Finally, the prototype has been fabricated and validated, it has been found that there is a decent agreement between measured and simulated responses.

show abstract

Section: Introductionmentioning

confidence: 99%

Low profile polarization‐insensitive wideband rasorber with in‐band transmission

Sambhav

Ghosh

2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

show abstract

“…To solve the problem, references [20][21][22][23][24][25][26][27][28] presented some methods of integrated designs of metasurface antennas with low scattering characteristics. For example, in [21], the antenna element itself had a low RCS property through current cancelation between the metal patch and dielectric substrate.…”

Section: Introductionmentioning

confidence: 99%

“…In [22], a multifunctional metasurface antenna that could realise dual-band EM wave emission, orbit angular momentum generation, and scattering manipulation was proposed by arranging various phase distributions in real time under FPGA control. When combining frequency-selective rasorbers with a reflect-/transmit-array, the elements need to control a full phase cycle along with a certain transmission window [24,25]. In [25], the antenna was composed of elements that had an absorption-transmission-absorption response, so that a low scattering performance was achieved both in-band and out-of-band.…”

Section: Introductionmentioning

confidence: 99%

An integrated 2‐bit metasurface array antenna with broadband low radar cross‐section covering large incident angle space

Zhang

Liu

Cao

et al. 2022

IET Microwaves Antenna & Prop

View full text Add to dashboard Cite

Based on an integrated design of metasurface units and antenna elements, a 2-bit metasurface array antenna with broadband low radar cross-section (RCS) covering large incident angle space is proposed in this study. The slot width's influences on the reflective phase and element radiation performance are analysed. Furthermore, a genetic algorithm is utilised to obtain the coding pattern of the array antenna with diffuse scattering characteristics. A wideband RCS reduction is achieved from 4.2 to 9.0 GHz under xpolarised incidence, and it has oblique incident angle stability ranging from 0°to 60°d ue to non-uniform element arrangement. The current cancelation phenomenon is found to reveal the RCS reduction mechanism. Besides, the proposed antenna gain is 15.9 dBi with a peak aperture efficiency of up to 90.8%. Experimental results have a close coincidence with the simulations, which verifies the capability of the proposed design.

show abstract

“…In recent years, several FSRs realized by different methods have been reported. [6][7][8][9][10][11][12][13][14][15][16][17][18][19] Typical two-dimensional FSR generally consists of a cascade of a lossy FSS and a lossless FSS and the distance between the two is generally a quarter wavelength of the transmission frequency 8 The lossy FSS usually provides absorption characteristics, by lading with lumped resistors, [6][7][8][9][10][11][12] indium-tin-oxide film, 13,14 the high-impedance surface, 15,16 at frequencies below or above the passband. The lossless FSS transmits electromagnetic waves with low insertion loss in the passband and acts as a reflector outside the passband due to its unique filtering response.…”

Section: Introductionmentioning

confidence: 99%

Wideband transverse electromagnetic cell design and its application in frequency selective surface measurement

Wang

Kong

Jiang

et al. 2021

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

An open transverse electromagnetic cell (TEM cell) that covers L-band, S-band, and C-band is proposed in this paper. According to impedance matching theory analysis, the characteristic impedance of coaxial connector and microstrip with air as substrate are considered, which are combined with a taper gradient section to realize the function of TEM cell. The proposed TEM cell was modeled and simulated in CST Microwave Studio. Through full-wave simulation, the proposed TEM cell demonstrates a wideband transmission characteristic, S 11 less than −10 dB from 1 to 8 GHz, which is relatively rare among the designs that have been reported. The test flow and data post-processing method are given. To verify the effectiveness of the test method, an example of measuring a classical square slot frequency selective surface that their resonance frequency is 3.7 GHz is designed and simulated in the TEM cell. To verify the simulated results, a prototype is fabricated and measured with the proposed TEM cell. The experimental result demonstrates a good agreement with the simulated result, which indicates that the designed TEM cell has good test performance.

show abstract

Low-RCS Reflectarray Antenna Based on Frequency Selective Rasorber

Cited by 30 publications

References 15 publications

Low profile polarization‐insensitive wideband rasorber with in‐band transmission

Low profile polarization‐insensitive wideband rasorber with in‐band transmission

An integrated 2‐bit metasurface array antenna with broadband low radar cross‐section covering large incident angle space

Wideband transverse electromagnetic cell design and its application in frequency selective surface measurement

Contact Info

Product

Resources

About