Wide band yagi antenna for terahertz application with graphene control

Zarrabi, Ferdows B.; Seyedsharbaty, Mir Mohsen; Ahmed, Zeeshan; Arezoomand, Afsaneh Saee; Heydari, Samaneh

doi:10.1016/j.ijleo.2017.05.009

Cited by 33 publications

(14 citation statements)

References 27 publications

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“…In addition, the THz antenna technology has been developed for various goals such as cancer detection [17] and antenna with different forms have been developed of patch antenna with photonic crystal [18], dipole antenna [19], slot antenna [20], and Yagi antenna [21][22]. However, to detect material under test for the THz spectrum using metasurface [23] and absorbers [24] are more interesting than antenna.…”

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Microfluidic as liquid lens for THz reconfigurable antenna and gain enhancement with sensing application

Ebrahimi

2021

Optik

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─ the lens plays important role in the dielectric resonator antenna (DRA) for increasing the bandwidth and directivity. Also, the liquids like water and ethanol can be noticed for developing the DRA for THz application. In addition, the liquids are interesting because the level and quality of material can be used for designing reconfigurable antenna. For the THz spectrum, the liquids can be combined with antenna and microwave devices by Microfluidic technology. In this paper, the suggested antenna is used to enhance the various factors of the antenna and the filling ratio of the channels is noticed to provide reconfigurable antenna. The slot antenna with split ring resonator and meandered feed is used as the basic antenna to provide high Q-factor. Moreover, the results show that this novel structure can be used as sensor for material detecting which is used to recognize various types of liquids by determining the sensitivity of the sensor in the range of 0.5 to 1 THz. The proposed sensor is examined for pure water, ethanol and gasoline based on the 2 nd order model of Debye.

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Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Microfluidic as liquid lens for THz reconfigurable antenna and gain enhancement with sensing application

Ebrahimi

2021

Optik

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“…The main advantage of using graphene in antenna design is the efficient dynamic tuning [15,16]. Frequency dependent surface conductivity of graphene can be tuned by changing its chemical potential which is realized by adjusting a bias or gate voltage.…”

Section: Graphene Materialsmentioning

confidence: 99%

“…Since the discovery of this novel 2-D material, a variety of antenna types are studied based on graphene covering microwave to THz frequency range [15][16][17][18][19]. Although investigation of graphene based TSA still remains an unexplored area of research in the literature, some wideband and UWB antennas based on graphene have been designed and analyzed from different point of views recently.…”

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confidence: 99%

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Development of Graphene Based Tapered Slot Antennas for Ultra-Wideband Applications

Inum¹,

Rana²,

Shushama³

2017

PIER C

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Abstract-In this paper, three different types of graphene based tapered slot antennas are designed for ultra-wideband (UWB) applications. The taper profiles for three antenna types are linear, exponential, and constant width. A single layer graphene sheet of 35 µm thickness is used to model the radiating element and feeding structure of the designed antennas. To feed the antennas, microstrip to slotline transition technique is adopted. An approximate analytical theory based on conical transmission line model is considered to authenticate the design of graphene based tapered slot antennas. Better impedance matching over 2-20 GHz is obtained by designing a balun in the form of a radial stub. Return loss, bandwidth, radiation pattern, and directive gain are the considered antenna performance parameters. Time domain solver of CST MWS software is used to evaluate the performances of linearly tapered slot antenna (LTSA), exponentially tapered slot antenna (Vivaldi), and constant width slot antenna (CWSA). The results obtained from CST are compared with that from HFSS to further validate the design. Simulation results with extensive parametric study confirm that the novel 2-D material graphene can be considered as a promising one to model UWB tapered slot antennas. Furthermore, the effectiveness of designed graphene based tapered slot antennas is revealed by comparing their performances with other existing UWB antennas. Moreover, as a UWB application, Vivaldi antenna shows promising results in microwave brain tumor detection.

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“…On the other hand, during the past decades, different types of antennas such as the Yagi antenna was studied for wireless applications in the microwave and THz spectrum 19,20 due to its directive pattern, high gain and wider bandwidth 21 . Moreover, the microstrip slots are widely investigated for wireless applications 22 with linear and circular polarization 23 and appropriate radar cross‐section 24 .…”

Section: Introductionmentioning

confidence: 99%

Compact Yagi‐Uda slot antenna with metamaterial element for wide bandwidth wireless application

Soheilifar¹

2020

Int J RF Microw Comput Aided Eng

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In this article, an antenna with the combination of the microstrip slot and Yagi antenna is presented for wideband WLAN (wireless local area network) using CRLH (composite right/left‐handed) as a metamaterial (Left‐hand) element. The T‐shape feed line is investigated as a radiator section and modified for enhancing the bandwidth. The periodic elements are utilized as a novel type of the director to improve the bandwidth to more than 35% and increase the gain of the antenna to more than 80% where the three CRLH elements array are employed as the director of the Yagi antenna. The proposed antenna covers the 2.2 to 8 GHz (113% bandwidth) with a return loss of less than −6 dB (VSWR less than 3), which makes it suitable for wireless applications for covering different bands including WLAN, LTE (Long Term Evolution), and WiMAX with 47% miniaturization. The final antenna is simulated with CST microwave studio by the time‐domain method of FIT (Finite integration technique). The total size of the antenna is 60 mm × 40 mm × 1.6 mm, which is printed on an FR‐4 substrate, and the experimental results confirm the simulations.

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Wide band yagi antenna for terahertz application with graphene control

Cited by 33 publications

References 27 publications

WITHDRAWN: Microfluidic as liquid lens for THz reconfigurable antenna and gain enhancement with sensing application

WITHDRAWN: Microfluidic as liquid lens for THz reconfigurable antenna and gain enhancement with sensing application

Development of Graphene Based Tapered Slot Antennas for Ultra-Wideband Applications

Compact Yagi‐Uda slot antenna with metamaterial element for wide bandwidth wireless application

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