Articles with "log periodic" as a keyword



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A single‐layer Ka‐band broadband reflectarray antenna using log‐periodic elements

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Published in 2019 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.32018

Abstract: This letter presents a novel log‐periodic reflectarray element based on a single‐layer substrate. To achieve a full 360° phase coverage with a gentle slope, the corresponding parameters are optimized. For the sake of minimizing the… read more here.

Keywords: antenna; single layer; log periodic; reflectarray antenna ... See more keywords
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Design of a wideband microstrip nanoantenna array

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Published in 2019 at "Optical and Quantum Electronics"

DOI: 10.1007/s11082-019-1852-6

Abstract: This paper presents the design of a logarithmic array of microstrip nano-antennas at terahertz frequencies. For applications in which small antennas are required, microstrip antennas are preferred. However, they have a narrow bandwidth. To overcome… read more here.

Keywords: log periodic; microstrip; nanoantenna array; microstrip nanoantenna ... See more keywords
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Quantum oscillations turn log(B )-periodic in Dirac semimetals: ‘Who ordered that?’

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Published in 2019 at "National Science Review"

DOI: 10.1093/nsr/nwz016

Abstract: Quantum oscillations refer to the oscillatory behavior of transport and thermodynamic quantities as a function of the applied magnetic field B in metals and semimetals. The primary examples are the Shubnikov–de Haas (SdH) oscillations in… read more here.

Keywords: quantum oscillations; log periodic; periodic dirac; dirac semimetals ... See more keywords
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Electrothermal Design of Bidirectional Wide-Boom Log-Periodic Antennas

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Published in 2017 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2017.2670536

Abstract: A wide-boom, microstrip-fed planar bidirectional log-periodic (LP) antenna is proposed and improvements in its impedance match, radiation, and thermal performances are demonstrated. The boom width of each arm is increased by moving its virtual apexes… read more here.

Keywords: log periodic; boom; physics; wide boom ... See more keywords
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A Novel Printed Dual-Log-Periodic Array Antenna for UHF Near-Field RFID Applications

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Published in 2018 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2018.2874202

Abstract: A novel printed center-fed dual-log-periodic array antenna is proposed for ultrahigh frequency (UHF) radio frequency identification (RFID) applications. The proposed antenna is composed of two reversed wideband printed log-periodic dipole array antennas. Two closely spaced… read more here.

Keywords: array; log periodic; array antenna; dual log ... See more keywords
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A UHF Deployable Log Periodic Dipole Antenna: Concept, Design, and Experiment

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Published in 2021 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2020.3004986

Abstract: A deployable log periodic dipole antenna (DLPDA) is proposed. The antenna consists of pairs of collapsible steel tape springs (as the dipoles), a novel stretchable zigzag double-sided parallel stripline (ZDPS) (as the boom), and a… read more here.

Keywords: log periodic; dipole antenna; periodic dipole; deployable log ... See more keywords