Low-Pass FSS for 50–230 GHz Quasi-Optical Demultiplexing for the MetOp Second-Generation Microwave Sounder Instrument

Dickie, R.; Christie, S.; Cahill, R.; Baine, Paul; Fusco, Vincent; Parow-Souchon, Kai; Henry, M.; Huggard, P. G.; Donnan, Robert; Sushko, Oleksandr; Candotti, Massimo; Dubrovka, R.; Parini, C.G.; Kangas, V.

doi:10.1109/tap.2017.2740978

Cited by 11 publications

(4 citation statements)

References 7 publications

(9 reference statements)

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“…The spectral response of a multi‐screen slot FSS can be designed to closely match the ideal shape of the transmit/receive window, that is a flat low loss transmission peak with a fast roll‐off rate above and below the passband [24]. However, for simplicity a ground plane was created using a single 0.035 mm thick copper screen perforated with an array of ≈ λ /2 linear slots.…”

Section: Superstrate Designmentioning

confidence: 99%

Frequency selective superstrate absorber for wideband RCS reduction of metal‐backed antennas

Machado

Cahill

Fusco

et al. 2021

IET Microwaves Antenna & Prop

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The use of a resistively loaded frequency selective surface (FSS) superstrate is reported as a means to reduce the radar cross‐section (RCS) of metal‐backed antennas. The design methodology is demonstrated by creating a low‐profile absorber which exhibits a transmission window covering the working frequency band (10–10.2 GHz) of a 4 × 4 microstrip patch array. Placing the structure λ/2 above the radiating aperture is shown to reduce the antenna gain by less than 2 dB and have minimal impact on the shape of the beams which are directed at 0° and tilt angles of 22.5° and 45°. Moreover 90% radar backscatter suppression is achieved over 92% of the frequency range 8.85–24 GHz. The perforated metal‐backed FSS superstrate was inkjet printed on a 140 μm thick polyethylene terephthalate (PET) sheet and the conductivity of the silver plating adjusted to achieve the required 40 Ω/sq surface resistance. The experimental results obtained for the standalone microwave absorber, and when integrated with the antenna, are shown to be in close agreement with the computed reflectivity and far field patterns.

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Section: Superstrate Designmentioning

confidence: 99%

Frequency selective superstrate absorber for wideband RCS reduction of metal‐backed antennas

Machado

Cahill

Fusco

et al. 2021

IET Microwaves Antenna & Prop

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“…The cascade resonance among the layers is the primary method to maintain the sharp and narrow transition in the multi‐layer FSS [12]. The FSS with miniaturisation element with meander‐line is introduced [13]. The classical Second‐Order Miniaturised Elements [14] and the Antenna–Filter–Antenna Arrays [15] are essential approaches to sharpening the transition zone of FSS.…”

Section: Introductionmentioning

confidence: 99%

Frequency and polarisation selective surface for sub‐millimetre wave atmospheric remote sensing

Chen,

Li,

Huang

et al. 2023

IET Microwaves Antenna & Prop

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A novel Frequency and Polarisation Selective Surface (FPSS) is proposed, which separates two adjacent bands with a narrow transition zone by the staggered separation scheme and is suitable for atmospheric remote sensing. The traditional FSS is transparent in a particular frequency band for both the TE and TM polarisations, while it is opaque in another band for both orthogonal polarisations. The FPSS is introduced in a new splitting scheme that operates above 300 GHz. The channel 420–430 GHz of the TE polarisation and the channel 360–400 GHz of the TM polarisation transmit in the FPSS. In contrast, the band 360–400 GHz of the TE polarisation and the channel 420–430 GHz of the TM polarisation are reflected. The water vapour and the oxygen profiles are detected by the 380 GHz band and the 425 GHz band, respectively. The insertion loss is lower than 1 dB, and the reflection band rejection is superior to 10 dB in the experiment, which determine the sensitivities of the bright temperature by 1.5 (RMS K). The scattered wave of the FPSS is calculated through the far field pattern, the maximum of which is about 5%. The side effect of the scattered wave is able to be ignored in the optical path.

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“…In a quasi‐optical system, frequency selective surface (FSS) is a key component to separate the frequency bands . An FSS acts as a spatial filter so that both the transmitted and reflected signals can be collected . An ideal FSS structure consists of a two‐dimensional array with infinite number of unit cells .…”

Section: Introductionmentioning

confidence: 99%

“…10 An FSS acts as a spatial filter so that both the transmitted and reflected signals can be collected. 11,12 An ideal FSS structure consists of a two-dimensional array with infinite number of unit cells. 13 Analysis of such structure is based on periodic boundary condition and numerical methods.…”

Section: Introductionmentioning

confidence: 99%

Low‐loss frequency selective surface for multi‐band THz transmission measurement

Yang¹,

Zeng²,

Liu

et al. 2020

Micro & Optical Tech Letters

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Frequency selective surface is a key component in a quasi‐optical system enabling multi‐band operation. This work presents the design, fabrication and measurement of a low‐loss frequency selective surface in a quasi‐optical system for terahertz transmission measurement to separate 220 to 260 GHz and 325 to 340 GHz bands. High‐precision milling technique was employed for fabrication. The measurement was conducted using a terahertz time domain spectroscopy and a home‐made quasi‐optical test bench. Good agreement was achieved between the measured results and simulated ones. The design and measurement methods can be applied to frequency selective surfaces working in other millimeter wave bands.

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Low-Pass FSS for 50–230 GHz Quasi-Optical Demultiplexing for the MetOp Second-Generation Microwave Sounder Instrument

Cited by 11 publications

References 7 publications

Frequency selective superstrate absorber for wideband RCS reduction of metal‐backed antennas

Frequency selective superstrate absorber for wideband RCS reduction of metal‐backed antennas

Frequency and polarisation selective surface for sub‐millimetre wave atmospheric remote sensing

Low‐loss frequency selective surface for multi‐band THz transmission measurement

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