Metasurface sensing difference in waveforms at the same frequency with reduced power level

Tanikawa, Mizuki; Ushikoshi, Daiju; Asano, Kosei; Sanji, Kenichiro; Ikeda, Masakazu; Anzai, Daisuke; Wakatsuchi, Hiroki

doi:10.1038/s41598-020-71242-0

Cited by 7 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, it is worth mentioning that, being these devices equipped with non-linear diode, they are inherently powerdependent devices and their time-dependent filtering functionalities could be disabled, particularly if receiving too low powered signal. Indeed, it has been demonstrated that more complex circuit solutions relying on the use of operational amplifiers can dramatically mitigate this issue [71].…”

Section: Waveform-selective Filtering Modules For Antennasmentioning

confidence: 99%

Intelligence Enabled by 2D Metastructures in Antennas and Wireless Propagation Systems

Barbuto

Hamzavi-Zarghani

Longhi

et al. 2022

IEEE Open J. Antennas Propag.

View full text Add to dashboard Cite

The development of the next generation of wireless systems is bringing renewed attention to the physical layer of the communication link. Indeed, the new low-latency requirements cannot be satisfied relying only upon the extreme virtualization of the hardware functions. Moreover, conventional wireless systems with fixed characteristics and functionalities are not appropriate to modern electromagnetic environments, which undergo continuous and fast variations. Embedded smartness is a required feature for widening the range of the possible electromagnetic responses to support advanced and novel functionalities. In this paper, we show how the combination of 2D metastructures with conventional antennas and reflectors enables an unprecedented electromagnetic behaviour, which is at the basis of new properties, capabilities, and applications. In particular, we propose an emerging design approach based on the shifting of the reconfigurability, adaptivity, sensing, and power management of a wireless system at the physical level, thanks to the use of properly designed 2D metastructures to be coupled with standard antennas and reflectors.

show abstract

Section: Waveform-selective Filtering Modules For Antennasmentioning

confidence: 99%

Intelligence Enabled by 2D Metastructures in Antennas and Wireless Propagation Systems

Barbuto

Hamzavi-Zarghani

Longhi

et al. 2022

IEEE Open J. Antennas Propag.

View full text Add to dashboard Cite

show abstract

“…[29] Additionally, Tanikawa et al introduced nonlinear circuit-based MSAs composed of Schottky diodes and other lumped elements, which were capable of distinguishing short pulses and continuous waves (CWs) at the same frequency. [30] Such nonlinear circuit-based MSAs hold promise for distinguishing signals with different waveforms (more specifically, pulse widths) and powers at the same frequency in wireless communication, effectively addressing the EM interference and compatibility issues in accordance with different waveforms. [31][32][33][34][35][36] For instance, MSAs were integrated with antenna design to receive particular pulsed signals while reducing interference from other signals at the same frequency.…”

Section: Introductionmentioning

confidence: 99%

Design of a Dual‐Band Waveform‐Selective Metasurface Absorber Based on the Combination of Two Resonator Structures Loaded with Nonlinear Circuits

Qian,

Cheng,

Luo

et al. 2024

Advcd Theory and Sims

Self Cite

View full text Add to dashboard Cite

In this paper, a design scheme for a dual‐band waveform‐selective metasurface absorber (MSA) is presented based on the combination of two metal resonator structures loaded with nonlinear circuits. Dual‐band MSAs with four different configurations are constructed by loading capacitor/inductor‐based nonlinear circuits into the gaps of two square‐patch (SP) and two square‐ring (SR) resonators, all of which can achieve selective absorption of short pulses and continuous waves (CWs) at two frequencies independently. As a typical example, the dual‐band MSA with the SP resonator loaded with the inductor‐based nonlinear circuit and the SR resonator loaded with the capacitor‐based nonlinear circuit is systematically studied. First, the selective absorption performance of the dual‐band MSA for CWs and pulses under different input powers is demonstrated. Second, the selective absorption properties of the dual‐band MSA for pulses with different pulse widths are studied. Third, the waveform‐selective absorption characteristics of the dual‐band MSA for oblique TE and TM waves are also illustrated. Finally, the influence of circuit component parameters on the selective absorption properties of pulses and CWs is systematically studied. The proposed dual‐band MSAs have potential application areas such as antenna design, wireless communications, and electromagnetic compatibility.

show abstract

“…[44] Since then, this waveform-selective concept has provided an additional degree of freedom in modulating the absorption behavior of incident EM wave signals at the same frequency depending on the waveform, notably the pulse width. [45][46][47][48][49][50][51][52] However, until now, all these waveform-selective MSAs operated only in the microwave or even radio-frequency region due to the limitation of the operation frequency of the nonlinear circuit components (such as rectifier diodes) in practice.…”

Section: Introductionmentioning

confidence: 99%

Terahertz Pseudo‐Waveform‐Selective Metasurface Absorber Based on a Square‐Patch Structure Loaded with Linear Circuit Components

Cheng,

Xing,

Chen

et al. 2024

Advanced Photonics Research

Self Cite

View full text Add to dashboard Cite

In recent years, metasurfaces composed of lumped nonlinear circuits have been reported to exhibit the capability of detecting specific electromagnetic waves, even when the waves are of the same frequency, depending on their respective waveforms or, more precisely, their pulse widths. Herein, three types of metasurface absorbers (MSAs) are presented which are composed of a square‐patch structure loaded with linear circuit components, including lumped resistors or resistors in parallel with capacitors/inductors, which can mimic the waveform‐selective absorption behavior in the terahertz (THz) region. By judiciously selecting suitable values for the linear circuit components, these MSAs can achieve near‐perfect absorption of incident continuous waves or longer pulses while exhibiting reduced absorption of short pulses at the same THz frequency. These linear circuit structures can be referred to as pseudo‐waveform‐selective MSAs because their waveform‐selective absorption characteristics are primarily derived from the dispersion behavior of the resonator structures, as opposed to the frequency conversion commonly observed in nonlinear circuits. These outcomes and discoveries introduce an additional degree of freedom for waveform discrimination in the THz frequency range, potentially enabling a broader range of applications, including but not limited to detection, sensing, and wireless communication.

show abstract

Metasurface sensing difference in waveforms at the same frequency with reduced power level

Cited by 7 publications

References 37 publications

Intelligence Enabled by 2D Metastructures in Antennas and Wireless Propagation Systems

Intelligence Enabled by 2D Metastructures in Antennas and Wireless Propagation Systems

Design of a Dual‐Band Waveform‐Selective Metasurface Absorber Based on the Combination of Two Resonator Structures Loaded with Nonlinear Circuits

Terahertz Pseudo‐Waveform‐Selective Metasurface Absorber Based on a Square‐Patch Structure Loaded with Linear Circuit Components

Contact Info

Product

Resources

About