Antennas for terahertz applications

Siegel, Peter H.; Maagt, P. de; Zaghloul, Amir I.

doi:10.1109/aps.2006.1711074

Cited by 41 publications

(16 citation statements)

References 13 publications

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“…Whether for imaging, communications, or astronomical purposes, all the various implementations of an antenna are a function of its size, bandwidth, feed elements, and the aperture (Siegel et al 2006). Scaling of the existing technologies to adapt to the terahertz region leads to inefficient designs and does not give optimum solutions.…”

Section: Terahertz Antennasmentioning

confidence: 99%

Terahertz Antenna Technology for Space Applications

Choudhury

Sonde

Jha

2016

SpringerBriefs in Electrical and Computer Engineering

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The terahertz (THz) band provides a transition between the electronic and the photonic regions thus adopting important characteristics from these regimes. These characteristics corresponding with the progress in semiconductor technology has enabled researchers to exploit hitherto unexplored domains including satellite communication, biomedical imaging, security systems, etc. This book, explores the terahertz antenna technology toward implementation of compact, consistent, and cheap terahertz sources, as well as the high-sensitivity terahertz detectors. The advances in new materials and nanostructures such as graphene will be helpful in miniaturization of antenna technology while simultaneously maintaining the desired output levels. Terahertz antenna characterization of bandwidth, impedance, polarization, etc. has not yet been methodically structured and it continues to be a major research challenge. This book addresses these issues besides including the advances of terahertz technology in space applications worldwide, along with possibilities of using this technology in deep space networks.

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Section: Terahertz Antennasmentioning

confidence: 99%

Terahertz Antenna Technology for Space Applications

Choudhury

Sonde

Jha

2016

SpringerBriefs in Electrical and Computer Engineering

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“…The size of a THz antenna is expected to closely relate to wavelength, which is about 30 um (10 THz) to 3 mm (0.1THz) [6]. Micro-electromechanical systems therefore present a suitable technology for manufacturing compact THz antennas with low profile, wide bandwidth, and large radiation [7]- [9].…”

Section: Methodsmentioning

confidence: 99%

Development and Performance Enhancement of MEMS Helix Antenna for THz Applications using 3D HFSS-based Efficient Electromagnetic Optimization

et al. 2018

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Interest of Micro-Electromechanical System (MEMS) Keywords: micro-electromechanical systems (MEMS), THz bands, helix antennas, 3D-HFSS, electromagnetic optimization.Copyright © 2018 Universitas Ahmad Dahlan. All rights reserved. IntroductionAs new applications for the electromagnetic THz field begin to emerge, a new generation of efficient MEMS antennas [1] is developed to meet the specific requirements of these high frequency systems. Many new processes of MEMS technology are just beginning to stimulate interest in this unique spectral and continue to help manufacturing THz antennas, improving their performance and achieving micro-level precision [2]. Focused Ion Beam (FIB) is one of the important processes used for fabricating MEMS antennas, especially helical antennas [3] by implementing silicon wafers that represent a very good solution to enhance the antenna's radiation and performance. MEMS helix antennas employing silicon substrates, have achieved over the past few years interesting characteristics including compact size, high directional gain, and wide bandwidth, thus their implementation into planar forms seems to become easier due to the advanced micromachining techniques [4]. This has provided a new class of THz antennas with numerous wireless access applications thanks to the use of complex simulation tools to bring the CAD for such high frequency structures to its current state of the art. Accordingly, HFSS-based Q-N and SNLP approaches lead to excellent optimization solutions carrying out by replacing repeated electromagnetic simulations whilst still retaining a good accuracy as compared with finite element modeling to improve the accuracy of the existing design models or develop new design models. This procedure requires acceptable simulation time especially for defining the problem that needs reliable and fully functional approximations. This paper proposes for the THz frequency access systems a compact geometrical configuration of a wide MEMS Helix antenna using HFSS software. The MEMS antenna geometry is optimized using both Quasi-Newton and Sequential Non Linear Programming algorithms to offer fitness functions for excellent bandwidth learning and fast configuration evaluating. The antenna occupies a very compact volume of 79×80×152 um (0.960 10-3 mm3) including the silicon substrate having a thickness of 9.3 um and a dielectric constant of 11.9.

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“…The exponentially increasing interest in these antennas is due to their potential applications in bio sensing, molecular communication, high resolution microscopy, optical inter connections, and communication between nano electronic devices [4]- [6]. Optical and Tera-Hertz applications require compact size antennas with reasonably wide bandwidth and high directivity which is a crucial parameter to nanoscale imaging, super resolution microscopy and light gathering applications [7]. Since the discovery of the CNT-based antenna in 2004 [8], there has been a great interest in exploring more optical applications.…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotube vee dipole antennas for optical applications

et al. 2009

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This paper investigates the radiation characteristics of a Vee dipole antenna operating in the near infra-red and optical frequency regimes. Antenna properties, such as far-field radiation patterns, coupling coefficient, measured by the scattering parameter S 11 , and directivity are provided. The resonance and directivity behavior of the optical Vee dipole, which is based on Multi-Wall Carbon Nano Tube (MWCNT), are investigated by varying the dipole length in order to exploit the effective operating frequency in the near infra-red range (~120 to 400 THz) and the visible light range (~400-750 THz). Moreover, a parametric study aimed at optimizing the antenna directivity is performed by varying the angle between the two arms of the dipole using CST Microwave Studio simulation software which is based on the Finite Integration Technique (FIT). The proposed antenna achieved a directivity 3.767 dB higher than the traditional dipole in the visible regime while maintaining the same directivity in the near infrared regime.

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Antennas for terahertz applications

Cited by 41 publications

References 13 publications

Terahertz Antenna Technology for Space Applications

Terahertz Antenna Technology for Space Applications

Development and Performance Enhancement of MEMS Helix Antenna for THz Applications using 3D HFSS-based Efficient Electromagnetic Optimization

Carbon nanotube vee dipole antennas for optical applications

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