Design and Analysis of Ultrathin Polarization Rotating Frequency Selective Surface Using V-Shaped Slots

Saikia, Mondeep; Ghosh, Saptarshi; Srivastava, Kumar Vaibhav

doi:10.1109/lawp.2017.2693685

Cited by 65 publications

(43 citation statements)

References 11 publications

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“…The polarisation rotators can be classified into two types based on the direction of outgoing wave viz. reflection type [4][5][6] and transmission type [7,8]. The reflective polarisation rotators are used in reflectarray antennas whereas; the transmission polarisers are used in transit array antennas and filtennas.…”

Section: Introductionmentioning

confidence: 99%

“…The SIW cavity structure has the special design which acts as a virtually thick surface and reduces the risk of high-power levels and also possesses the advantages of high power handling [10,12]. Many designs are proposed for polarisation rotation based on conventional FSS [8] and multilayered structures [13]. However, SIW based structure offers wide BW and sharp roll-off characteristics over the conventional FSS with ultra-thin thickness [14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design and development of angularly stable and polarisation rotating FSS radome based on substrate‐integrated waveguide technology

Varikuntla

Velu

2019

IET Microwaves, Antennas & Propagation

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In this paper, the design of a novel polarisation rotating frequency selective surface (FSS) radome is presented based on substrate integrated waveguide (SIW) technology. The proposed radome consists of an FSS core with Y‐shaped slots on either side of the substrate and surrounded by metallic vias. The primary function of the core is to select the linear polarisation from the impinging electromagnetic (EM) wave and to rotate the wave into 90° clockwise direction in the X‐band regime. The radome structure shows a relative bandwidth of 13.2% from 9.2 GHz to 10.5 GHz with impedance matching better than −10 dB and the insertion loss (IL) better than 0.5 dB. The proposed structure shows very stable resonance performance with sharp band edge characteristics compared to the existing FSS radomes. Also, the conformal analysis of the proposed structure has been carried out to study its behaviour for real‐time radome applications. Finally, to prove the efficacy of the proposed structure, a prototype has fabricated and measured its performance in a free space measurement setup. A good agreement is observed between the experimental and simulated results. Furthermore, the conversion of E‐field pattern to H‐field pattern and vice‐versa is proved from the experimental verification.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and development of angularly stable and polarisation rotating FSS radome based on substrate‐integrated waveguide technology

Varikuntla

Velu

2019

IET Microwaves, Antennas & Propagation

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“…Metasurfaces are typically defined as a designed structures with lattice constants and thicknesses bellow the Bragg limit. Various kinds of MSs have been reported to improve the performances of antennas [1,2,3,4,5,6,7,8]. For example, due to the 0° reflection phase of an artificial magnetic surface (AMC), the antenna can have a higher boresight gain with a lower profile by using AMC as ground plane below the radiating element, compared with perfect electrical conductor ground [1].…”

Section: Introductionmentioning

confidence: 99%

“…In reference [4], with a MS placed above a crossed slot circular polarized antenna, the bandwidth and gain could be increased. By using a MS above a horn antenna, the polarization can be rotated 90° [5,6]. In reference [7], the MS is used to change the linearly polarized EM waves from an antenna into circularly polarized EM waves.…”

Section: Introductionmentioning

confidence: 99%

An Optically Transparent Metasurface-Based Resonant Cavity Fed by Patch Antenna for Improved Gain

Chen

2019

Materials

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An optically transparent metasurface (MS) is proposed to design a resonant cavity fed by a patch antenna operating at 5.6 GHz. In the proposed MS, a transparent micro metal mesh conductive (MMMC) film is used as the transparent conducting film (TCF), and it has a high optical transmittance of more than 75% and a low sheet resistance of 0.7 Ω/sq. The MS is composed of a layer of glass substrate and a layer of MMMC film. The unit cell of MS consists of a square patch using MMMC film patterned on a square glass substrate. The transparent MS, patch antenna, ground plane, and air-filled half-wavelength cavity form a resonant cavity antenna, to achieve an improved gain. The MS is designed, optimized and analyzed using the EM simulation software CST. Results show that the MS can improve the simulated boresight gain from 4.7 to 13.2 dBi by 8.5 dB, without affecting the impedance bandwidth (IMBW) much. The losses of MS with different values of sheet resistance are also studied, showing the MS using MMMC with sheet resistance of 0.7 Ω/sq has very small losses.

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“…Structures based on circular or rectangular SIW cavities excited with different slot shapes are shown in [10]- [12] for K a-band. An approach implementing a frequency selective surface with V-shaped slots on a PCB without cavities has been proposed in [13] for 10 GHz. These structures turn a linear polarized incident electromagnetic wave up to 90 • in a certain frequency band, but do not allow the incident wave to propagate without polarization rotation in a neighbored band.…”

mentioning

confidence: 99%

Design of a Polarization Rotating SIW-Based Reflector for Polarimetric Radar Application

Freialdenhoven

Bertuch

Stanko

et al. 2020

IEEE Trans. Antennas Propagat.

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Polarimetric radar systems are beneficial to identifying and classifying targets but require multiple transmit or receive channels with different polarizations. This leads to a high hardware effort and thus higher costs. To use a single, linear polarized radar sensor as a polarimetric system, a frequencydependent, polarization rotating reflector which can be placed in front of the radar antenna is presented. The reflector is based on a frequency selective surface (FSS) consisting of slot-excited substrate integrated waveguide (SIW) resonators. Resonator modes are analyzed and an equivalent circuit diagram to describe the filter functionality is developed. For using the described FSS as reflective structure, the design focuses on 45 • oblique incidence. Different field vectors for normal and oblique incident angles are considered and different cavity modes for these cases are analyzed. An undesired mode is suppressed by an additional plated through via hole and slot impedances are matched. Reflector designs for normal and oblique incident angles are presented for 15 GHz (K u-band) and afterward adapted to 35 GHz (K a-band). The frequency band of operation with 12% fractional bandwidth is divided into two 4.5% subbands which allows a frequency-dependent polarization rotation of a linear polarized electromagnetic wave. Investigations on the fabrication accuracies are presented and reflectors for both bands are manufactured. Measurements are performed with a vector network analyzer and results fit well to the simulated curves. In the band of polarization rotation reflection, the matching is better than −13 dB and dielectric losses of less than 1 dB are achieved.

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Design and Analysis of Ultrathin Polarization Rotating Frequency Selective Surface Using V-Shaped Slots

Cited by 65 publications

References 11 publications

Design and development of angularly stable and polarisation rotating FSS radome based on substrate‐integrated waveguide technology

Design and development of angularly stable and polarisation rotating FSS radome based on substrate‐integrated waveguide technology

An Optically Transparent Metasurface-Based Resonant Cavity Fed by Patch Antenna for Improved Gain

Design of a Polarization Rotating SIW-Based Reflector for Polarimetric Radar Application

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