Design and optimization of micro-sized wideband fractal MIMO antenna based on characteristic analysis of graphene for terahertz applications

Babu, K. Vasu; Das, Sudipta; Sree, Gorre Naga Jyothi; Madhav, B. T. P.; Patel, Shobhit K.; Parmar, Juveriya

doi:10.1007/s11082-022-03671-2

Cited by 52 publications

(14 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rep 2020 [ 23 ] 0.152 (0.276–0.711 THz) 88.14 4.3 2.58 15 J. Comput. Electron 2022 [ 27 ] 0.353 (0.38–0.42 THz) 10 7 1.1 88 Optik 2020 [ 28 ] 0.245 (0.35–0.75 THz) 72.72 4 2.14 87 Opt. Quantum.…”

Section: Analysis and Discussion On The Resultsmentioning

confidence: 99%

On-chip coronavirus shape antenna for wide band applications in terahertz band

Kiani

Rezaei

Fakhr

2023

J Opt

View full text Add to dashboard Cite

In this paper, a novel compact planar coronavirus antenna is proposed for wide band applications. In the design of this antenna, the idea of the radiating part has been taken from the 3-D model of the coronavirus, which is fed by a 50 Ω coplanar waveguide. The patch structure and the feed line of the proposed antenna, which have been made of gold, are located on a polyamide substrate with a thickness and dielectric constant of 45 µm and 3.5, respectively, and the antenna has compact physical dimensions of 300 × 300 µm 2 . The simulation results of the antenna have been analyzed in terms of S 11 , VSWR, radiation pattern, gain and surface current distribution. The designed antenna covers the frequency band from 0.3627 to 0.5918 THz for S 11 ≤ − 0 dB with a fractional bandwidth of > 47.98% and with a bandwidth ratio of 1.63:1. This extended bandwidth coverage allows the antenna to be suitable for a wide range of applications including wireless communications, internet of things, wearable devices, on-chip antennas and multiple-input multiple-output systems. Also, the results of the far-field show an omnidirectional radiation pattern with an average gain and efficiency of 4 dBi and 93% throughout the frequency band, respectively.

show abstract

Section: Analysis and Discussion On The Resultsmentioning

confidence: 99%

On-chip coronavirus shape antenna for wide band applications in terahertz band

Kiani

Rezaei

Fakhr

2023

J Opt

View full text Add to dashboard Cite

show abstract

“…In equation ( 1), e 0 and w P are free space permittivity and plasma frequency, respectively. The relaxation time (τ) is 1 × 10 −12 s at room temperature (T) = 100 K [11]. Graphene also provides an important significance as an absorber because it has a very high absorption rate in comparison to radiation in a lower THz frequency regime i.e.…”

Section: Geometrical Layout Of Designed Absorbermentioning

confidence: 99%

“…It supports wideband absorption i.e. 2.37-3.45 THz with more than 90% absorption [11]. Qi et al designed graphene-dielectric based dual band absorber.…”

Section: Introductionmentioning

confidence: 99%

Design and investigation on polarization insensitive dual band graphene based tunable absorber for THz applications

Verma,

Meena

2024

Phys. Scr.

View full text Add to dashboard Cite

In this communication, a metal-free graphene-based Absorber is designed and examined in the THz regime. The graphene layer is coated over the SiO2 substrate, while the silver layer is used on the other side of the substrate. The designed absorber works in two frequency bands i.e. 2.2-2.91 THz (11-14 µm) and 4.85-5.83 THz (51-62 µm), having more than 90% absorption. Peak absorption is obtained 2.55 THz and 5.05 THz with 97.78% and 99.71% absorption. With the help of circular sectoring, the designed absorber shows wide polarization and wide incident angle (up to 600) insensitivity for both TE and TM modes. Change in chemical potential of graphene provides the tunable characteristics in the designed absorber. All these outcomes confirm that the designed metal-free graphene-based metamaterial absorber works efficiently in THz regime and can be used in different applications such as, sensing and imaging.

show abstract

“…It can be seen that the amount of change of θ k (t) at the rise and decay process is 0 from (9), which means θ k (t) behaves as a period of Δt r or Δt f time delay at the rise and decay process, and the change of phase within a T RB is no longer ±π/2. As shown in Figure 6, if Δt r ≠ Δt f , the phase error increases continuously with the accumulation of time, and if the control strategy is adopted, i.e., Δt r � Δt f , the phase error generated in the previous rise/decay process will be compensated in the next rise/decay process, and there is no longer a cumulative error.…”

Section: Effect Of Rotational Motion On Phasementioning

confidence: 99%

“…However, the low-frequency electromagnetic transmitting antennas of existing technologies are all electrically small antennas (ESAs), which rely on the oscillating current in the conductor to excite electromagnetic waves. ere is a Chu-Harrington limit [5][6][7][8][9], making its transmitting system to have features of bulky size, low radiation e ciency, high transmitting power, and energy consumption, which restricts the development of low-frequency electromagnetic communication in related elds.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Transmission Characteristics on an MSK-Based Rotating Magnet-Based Mechanical Antenna

Zhou

Zhang

2022

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

A rotating magnet-based mechanical antenna (RMBMA) is a new promising paradigm which can significantly reduce both the size and the power consumption of the super-low frequency electromagnetic transmitter. To further reveal the effects of the rotational motion on transmission, this paper investigates the performance analysis of MSK (Minimum Shift Keying)-based RMBMA for the first time. Initially, based on the framework of MSK-based RMBMA, both the information loading of RMBMA and the control strategies of the motor are proposed, such that the impacts of the step response induced by the motor on the information loading are characterized. Then, the transmission capacity of the MSK-based RMBMA is derived in the closed form. The results indicate that increasing output torque or decreasing inertia load can enhance the transmission capacity. Finally, numerical simulations using a realistic system model demonstrate the validity of the proposed performance analysis. The simulation results show that when the inertia is less than 0.0128 kg∙m2 and the symbol rate is less than 4 bit/s, the bit error rate is less than 10%, thereby improving the transmission capacity. The proposed comprehensive design principles of RMBMA provide guidance for system design and practical implementation.

show abstract

Design and optimization of micro-sized wideband fractal MIMO antenna based on characteristic analysis of graphene for terahertz applications

Cited by 52 publications

References 41 publications

On-chip coronavirus shape antenna for wide band applications in terahertz band

On-chip coronavirus shape antenna for wide band applications in terahertz band

Design and investigation on polarization insensitive dual band graphene based tunable absorber for THz applications

Analysis of Transmission Characteristics on an MSK-Based Rotating Magnet-Based Mechanical Antenna

Contact Info

Product

Resources

About