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Applied Sciences
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Terahertz Communications
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Terahertz Communications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".

Deadline for manuscript submissions: closed (30 June 2021) | Viewed by 8682

Special Issue Editor

Dr. Mira Naftaly

E-Mail Website
Guest Editor
National Physical Laboratory, Hampton Road, Teddington TW11 0LW, UK
Interests: terahertz measurements and metrology; terahertz spectroscopy; terahertz applications; nonlinear optics; terahertz imaging; terahertz communications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Terahertz wireless communications is a rapidly growing and developing field driven by the rising demand for wireless traffic volume and data transmission rates. In recent years it has attracted considerable effort and investment in both academia and industry, producing a large number of scientific publications. The special issue on Terahertz Communications will showcase the current research in this area. Manuscript submissions are invited on all related topics, including:

  • Emitters and detectors
  • Beam steering and modulation devices
  • Demonstrations of wireless links
  • Beam propagation
  • System demonstrations
  • Application scenarios

And the collection of papers in the special issue will be also published as a stand-alone e-book.

Dr. Mira Naftaly
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Teraherts communications
  • Terahertz wireless links
  • Terahertz emitters and detectors
  • Terahertz beam steering

Published Papers (3 papers)

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Research

10 pages, 3255 KiB  
Article
Wide Scanning Angle Millimetre Wave 1 × 4 Planar Antenna Array on InP at 300 GHz
by Bilal Hussain, Henrique M. Salgado and Luís M. Pessoa
Appl. Sci. 2021, 11(15), 7117; https://0-doi-org.brum.beds.ac.uk/10.3390/app11157117 - 31 Jul 2021
Viewed by 1451
Abstract
The design of a uniformly spaced 1 × 4 linear antenna array using epitaxial layers of benzocyclobutene over an InP substrate is demonstrated. The array elements are conjugately matched with a uni-travelling carrier photodiode at the input. The phased array is optimised to [...] Read more.
The design of a uniformly spaced 1 × 4 linear antenna array using epitaxial layers of benzocyclobutene over an InP substrate is demonstrated. The array elements are conjugately matched with a uni-travelling carrier photodiode at the input. The phased array is optimised to counteract mutual coupling effects by introducing metal strips with isolated ground planes for each radiating element. The proposed antenna array can provide a gain of 10 dBi with a gain variation of ±3 dB. The array operates over a bandwidth of 10 GHz (295–305 GHz) with a wide scanning angle of 100° in the broadside. Full article
(This article belongs to the Special Issue Terahertz Communications)
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12 pages, 4024 KiB  
Article
Beam Profile Characterisation of an Optoelectronic Silicon Lens-Integrated PIN-PD Emitter between 100 GHz and 1 THz
by Jessica Smith, Mira Naftaly, Simon Nellen and Björn Globisch
Appl. Sci. 2021, 11(2), 465; https://0-doi-org.brum.beds.ac.uk/10.3390/app11020465 - 06 Jan 2021
Cited by 12 | Viewed by 2725
Abstract
Knowledge of the beam profiles of terahertz emitters is required for the design of terahertz instruments and applications, and in particular for designing terahertz communications links. We report measurements of beam profiles of an optoelectronic silicon lens-integrated PIN-PD emitter at frequencies between 100 [...] Read more.
Knowledge of the beam profiles of terahertz emitters is required for the design of terahertz instruments and applications, and in particular for designing terahertz communications links. We report measurements of beam profiles of an optoelectronic silicon lens-integrated PIN-PD emitter at frequencies between 100 GHz and 1 THz and observe significant deviations from a Gaussian beam profile. The beam profiles were found to differ between the H-plane and the E-plane, and to vary strongly with the emitted frequency. Skewed profiles and irregular side-lobes were observed. Metrological aspects of beam profile measurements are discussed and addressed. Full article
(This article belongs to the Special Issue Terahertz Communications)
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16 pages, 3265 KiB  
Article
A Photonically-Excited Leaky-Wave Antenna Array at E-Band for 1-D Beam Steering
by Álvaro J. Pascual-Gracia, Muhsin Ali, Guillermo Carpintero Del Barrio, Fabien Ferrero, Laurent Brochier, Ronan Sauleau, Luis Enrique García-Muñoz and David González-Ovejero
Appl. Sci. 2020, 10(10), 3474; https://0-doi-org.brum.beds.ac.uk/10.3390/app10103474 - 18 May 2020
Cited by 10 | Viewed by 3722
Abstract
This manuscript reports the first leaky-wave antenna (LWA) array excited by a photomixer as well as its potential application for alignment in wireless links. The designed array is manufactured in printed circuit board (PCB) technology, works at the E-band (from 75 to 85 [...] Read more.
This manuscript reports the first leaky-wave antenna (LWA) array excited by a photomixer as well as its potential application for alignment in wireless links. The designed array is manufactured in printed circuit board (PCB) technology, works at the E-band (from 75 to 85 GHz), and provides a directive beam of about 18 dBi with a frequency scanning span of 22°. The antenna element consists of a microstrip line periodically loaded with stubs, and it has been designed employing a hybrid approach combining full-wave simulations and transmission line theory. This approach enables the optimization of the periods when the open-stopband of the LWA is mitigated or removed at the frequency of broadside emission. The proposed antenna was first tested using a ground signal ground (GSG) probe; the measured return loss and radiation patterns of the fabricated prototype were in good agreement with full-wave simulations. Then, the LWA array was integrated with the photomixer chip using conductive epoxy threads. Measurements of the radiated power yielded a maximum of 120 µW at 80.5 GHz for a 9.8 mA photocurrent. Finally, the antenna was used in a 25 cm wireless link, obtaining a 2.15 Gbps error-free data rate. Full article
(This article belongs to the Special Issue Terahertz Communications)
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