Results 11 to 20 of about 3,372 (263)
An Active Metamaterial Absorber With Ultrawideband Continuous Tunability
IEEE Access, 2022 In this paper, an active metamaterial (MM) absorber loaded with PIN diodes is proposed. By adjusting the bias currents of PIN diodes to change the value of the introduced equivalent resistance, the Q factors of multiple resonances of the whole structure ...
Zonghuan Wu +3 more
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IEEE Access, 2023 A new adaptive frequency selective surface (AFSS) has been presented for electromagnetic (EM) shielding applications. Passive EM shields lack reconfigurability which severely limits their application.
Mohammed Abdullah Hussaini +5 more
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Frontiers in Physics, 2021 A substrate integrated waveguide (SIW) based spoof surface plasmon polariton (SSPP) is proposed for the design of bandpass filter (BPF). The left and right edge cutoff frequencies of the passband can be easily adjusted by changing the parameters of SIW ...
Longfei Tan +4 more
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IEEE Access, 2020 An active reconfigurable ultra-wideband antenna exhibiting complementary frequency notched and narrowband responses is proposed in this paper. The frequency responses are achieved on a CPW fed single element printed monopole antenna loaded with a pair of
Chinmoy Saha +4 more
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A Compact Circular Loop Inspired Frequency and Bandwidth Reconfigurable Antenna for 4G, 5G, and X- Band Applications [PDF]
Radioengineering, 2020 This paper presents a printed patch antenna design to achieve frequency and bandwidth reconfigurability. Two RF PIN diodes are simultaneously operated to achieve the multi-reconfigurability operation.
M. Rasool +4 more
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PIN diode driver for NMR and MRI [PDF]
Journal of Magnetic Resonance, 2019 Designing custom coils for magnetic resonance systems, such as nuclear magnetic resonance (NMR) spectrometers and magnetic resonance imaging (MRI) scanners, often entails using non-standard configurations of the transmit-receive (T/R) switch and Q-spoiling circuits.
Johansen, D.H. +4 more
openaire +2 more sources
Design of a Multifunctional Reconfigurable Metasurface for Polarization and Propagation Manipulation
IEEE Access, 2019 In this paper, a multifunctional reconfigurable polarization conversion metasurface (MRPCM) is designed for controlling both the propagation and the polarization of electromagnetic wave.
You Li, Yi Wang, Qunsheng Cao
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Voltage Controlled Intertwined Spiral Arrays for Reconfigurable Metasurfaces
International Journal of Antennas and Propagation, 2014 Reconfigurable bistate metasurfaces composed of interwoven spiral arrays with embedded pin diodes are proposed for single and dual polarisation operation.
A. Vallecchi +2 more
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A Frequency Reconfigurable Compact Planar Inverted-F Antenna for Portable Devices
International Journal of Antennas and Propagation, 2022 In this paper, a low-profile, compact size, inexpensive, and easily integrable frequency reconfigurable antenna system is proposed. The proposed antenna consists of an inverted-F shape antenna, capacitors, and switching PIN diodes.
Adnan Ghaffar +7 more
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Design of a PIN Diode-Based Reconfigurable Metasurface Antenna for Beam Switching Applications
International Journal of Antennas and Propagation, 2019 In this paper, we propose a reconfigurable metasurface antenna for beam switching applications. The reconfigurable metasurface is formed by uniformly distributed double-split square rings loaded with positive-intrinsic-negative (PIN) diodes for dual ...
Sarawuth Chaimool +4 more
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