Articles with "frequency selective" as a keyword



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

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Published in 2020 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.32246

Abstract: 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… read more here.

Keywords: multi band; selective surface; frequency selective; measurement ... See more keywords
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2.5D frequency selective surface with quasi‐elliptical bandpass response

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Published in 2021 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.32798

Abstract: In this article, a via‐based 2.5‐dimensional (2.5D) frequency selective surface (FSS) is proposed to realize a quasi‐elliptical bandpass response with high frequency selectivity. Each FSS element is composed of two parts. Part A is a… read more here.

Keywords: quasi elliptical; frequency selective; selective surface; bandpass response ... See more keywords
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Design of highly directive terahertz photoconductive dipole antenna using frequency-selective surface for sensing and imaging applications

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Published in 2018 at "Journal of Computational Electronics"

DOI: 10.1007/s10825-018-1217-6

Abstract: The prospects for improving the gain and directivity of a photoconductive dipole antenna (PCA) using a bandpass frequency-selective surface (FSS) as a superstrate at terahertz frequencies for imaging and sensing applications are presented. The physical… read more here.

Keywords: photoconductive dipole; frequency selective; frequency; selective surface ... See more keywords
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Performance analysis of energy efficient cooperations in WSNs over frequency-selective channels

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Published in 2018 at "Wireless Networks"

DOI: 10.1007/s11276-017-1495-0

Abstract: AbstractEnergy efficient cooperations in wireless sensor networks (WSNs) subject to flat fading channels have attracted a considerable amount of attention recently. However, wireless channels of WSNs operating in indoor environments are supposed to have a… read more here.

Keywords: frequency selective; energy efficient; energy; analysis ... See more keywords
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Energy Efficient Cooperation with Chip-Interleaved Transceivers in WSNs Over Frequency-Selective Fading Channels

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Published in 2017 at "Wireless Personal Communications"

DOI: 10.1007/s11277-017-4033-6

Abstract: Abstract Cooperative diversity techniques have been utilized to improve the energy efficiency of wireless sensor networks (WSNs) operating over flat fading channels in a considerable number of literature. However, wireless channels of WSNs operating in… read more here.

Keywords: fading; frequency selective; energy; fading channels ... See more keywords
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Faster-than-Nyquist Transmission in SC-FDE System Over Frequency Selective Channel with Concatenated Equalizers

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Published in 2018 at "Wireless Personal Communications"

DOI: 10.1007/s11277-017-5102-6

Abstract: Faster-than-Nyquist (FTN) transmission uses non-orthogonal pulses with respect to symbol time for improving system capacity and spectral efficiency. The Single Carrier Frequency-Domain Equalization (SC-FDE) system is an attractive transmission technique to combat the Inter-Symbol-Interference (ISI)… read more here.

Keywords: frequency selective; system; transmission; fde system ... See more keywords
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Dual stop band frequency selective surface for C and WLAN band applications

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Published in 2018 at "AEU - International Journal of Electronics and Communications"

DOI: 10.1016/j.aeue.2018.10.016

Abstract: Abstract A miniaturized unit cell design of Frequency Selective Surface (FSS) to produce stop band characteristics for two bands is presented. The presented unit cell structure is showing the band filtering characteristics for dual frequency… read more here.

Keywords: band; unit cell; frequency selective; unit ... See more keywords
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Morphological design of optical cavities for frequency-selective black absorbers

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Published in 2017 at "Current Applied Physics"

DOI: 10.1016/j.cap.2017.03.026

Abstract: Abstract We study various morphological effects due to optical cavities that are formed into metal substrates for the implementation of frequency-selective black absorbers. The absorption spectra (λ = 500–3000 nm) of patterned metal substrates are investigated by conducting… read more here.

Keywords: absorption; frequency selective; optical cavities; black absorbers ... See more keywords
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Flexible frequency selective passive circuits based on memristor and capacitor

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Published in 2017 at "Organic Electronics"

DOI: 10.1016/j.orgel.2017.09.012

Abstract: Abstract In analog electronic communication and signal processing applications, programmable analog filters are desirable to reduce the hardware requirement. Memristor is two states configurable nonvolatile resistor, which is small size, low power, and fast switching… read more here.

Keywords: memristor capacitor; frequency selective; capacitor; flexible frequency ... See more keywords
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Design and analysis of a tri-band frequency selective surface with a second-order response

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Published in 2019 at "International Journal of Microwave and Wireless Technologies"

DOI: 10.1017/s175907871900117x

Abstract: Abstract In this paper, a sandwiched type frequency selective surface (FSS) is designed and analyzed. The design procedure and operating principle is given based on the equivalent circuit model. The proposed FSS includes two identical… read more here.

Keywords: frequency selective; response; selective surface; band ... See more keywords
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Ultrawide Bandwidth Electromagnetic Wave Absorbers Using a High-capacitive Folded Spiral Frequency Selective Surface in a Multilayer Structure

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Published in 2019 at "Scientific Reports"

DOI: 10.1038/s41598-019-52967-z

Abstract: A high-capacitive frequency selective surface (FSS) with a new structure of folded spiral conductors is proposed as the small-array periodicity and low-frequency resonance FSS for ultra-wide bandwidth absorbers in a multilayer structure. Due to the… read more here.

Keywords: frequency selective; frequency; folded spiral; selective surface ... See more keywords