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Journals
Designs
Special Issues
3D-Printed RF Devices and Antennas
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3D-Printed RF Devices and Antennas

A special issue of Designs (ISSN 2411-9660). This special issue belongs to the section "Smart Manufacturing System Design".

Deadline for manuscript submissions: closed (31 July 2019) | Viewed by 17820

Special Issue Editors

Dr. William Whittow

E-Mail Website
Guest Editor
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UK
Interests: 3D printing; antennas; artificial dielectrics; dielectric property measurements; embroidered antennas; energy harvesting; heterogeneous substrates; implanted antennas; inkjet printing; metamaterials; metasurfaces; RFID tags; specific absorption rates (SAR); wearable antennas
Special Issues, Collections and Topics in MDPI journals
Dr. Shiyu Zhang
*
E-Mail Website
Guest Editor
Jaguar Land Rover, Coventry CV3 4LF, UK
Interests: antennas; lens antennas; 3D-printed antennas; wearable antennas; metamaterials
* Lead EM Simulation Engineer

Special Issue Information

Dear Colleagues,

We live in a wireless world where there are constant pressures to make our communication systems lighter, smaller, cheaper, more efficient, have multiband or wide response, and be more intelligent. One topical area in addressing these challenges is the use of additive manufacturing, which can allow the creation of external and internal shapes that are difficult to replicate using traditional techniques. These extra degrees of freedom allow antenna and RF designers to imagine new structures. In this Special Issue, we invite you to submit papers relating to: 3D-printed antennas, devices, and metamaterials; new material compositions and formulations; and new techniques for additively manufacturing structures including printing multiple materials.

Dr. William Whittow
Dr. Shiyu Zhang
Guest Editors

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. Designs 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 1600 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

  • 3D printing
  • antennas
  • RF devices
  • metamaterials
  • artificial dielectrics
  • lenses
  • materials
  • graded materials

Published Papers (3 papers)

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Research

17 pages, 5079 KiB  
Article
Evaluation of Microwave Characterization Methods for Additively Manufactured Materials
by Chih-Kuo Lee, Jack McGhee, Christos Tsipogiannis, Shiyu Zhang, Darren Cadman, Athanasios Goulas, Tom Whittaker, Reza Gheisari, Daniel Engstrom, John (Yiannis) Vardaxoglou and William Whittow
Designs 2019, 3(4), 47; https://doi.org/10.3390/designs3040047 - 25 Sep 2019
Cited by 28 | Viewed by 5384
Abstract
Additive manufacturing (AM) has become more important and common in recent years. Advantages of AM include the ability to rapidly design and fabricate samples much faster than traditional manufacturing processes and to create complex internal geometries. Materials are crucial components of microwave systems [...] Read more.
Additive manufacturing (AM) has become more important and common in recent years. Advantages of AM include the ability to rapidly design and fabricate samples much faster than traditional manufacturing processes and to create complex internal geometries. Materials are crucial components of microwave systems and proper and accurate measurement of their dielectric properties is important to aid a high level of accuracy in design. There are numerous measurement techniques and finding the most appropriate method is important and requires consideration of all different factors and limitations. One limitation of sample preparation is that the sample size needs to fit in the measurement method. By utilizing the advantage of additive manufacturing, the material can be characterized using different measurement methods. In this paper, the additive manufacturing process and dielectric measurement methods have been critically reviewed. The test specimens for measuring dielectric properties were fabricated using fused filament fabrication (FFF)-based additive manufacturing and were measured using four different commercial dielectric properties measurement instruments including split post dielectric resonator (SPDR), rectangular waveguide, TE01δ cavity resonator, and open resonator. The measured results from the four techniques have been compared and have shown reasonable agreement with measurements within a 10 percent range. Full article
(This article belongs to the Special Issue 3D-Printed RF Devices and Antennas)
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9 pages, 1503 KiB  
Article
3D Conductive Polymer Printed Metasurface Antenna for Fresnel Focusing
by Okan Yurduseven, Shengrong Ye, Thomas Fromenteze, Benjamin J. Wiley and David R. Smith
Designs 2019, 3(3), 46; https://doi.org/10.3390/designs3030046 - 4 Sep 2019
Cited by 6 | Viewed by 4809
Abstract
We demonstrate a 3D printed holographic metasurface antenna for beam-focusing applications at 10 GHz within the X-band frequency regime. The metasurface antenna is printed using a dual-material 3D printer leveraging a biodegradable conductive polymer material (Electrifi) to print the conductive parts and polylactic [...] Read more.
We demonstrate a 3D printed holographic metasurface antenna for beam-focusing applications at 10 GHz within the X-band frequency regime. The metasurface antenna is printed using a dual-material 3D printer leveraging a biodegradable conductive polymer material (Electrifi) to print the conductive parts and polylactic acid (PLA) to print the dielectric substrate. The entire metasurface antenna is 3D printed at once; no additional techniques, such as metal-plating and laser etching, are required. It is demonstrated that using the 3D printed conductive polymer metasurface, high-fidelity beam focusing can be achieved within the Fresnel region of the antenna. It is also shown that the material conductivity for 3D printing has a substantial effect on the radiation characteristics of the metasurface antenna. Full article
(This article belongs to the Special Issue 3D-Printed RF Devices and Antennas)
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11 pages, 2772 KiB  
Article
3D Printed Radar Lenses with Anti-Reflective Structures
by Ross J. Friel, Maria Gerling-Gerdin, Emil Nilsson and Björn P. Andreasson
Designs 2019, 3(2), 28; https://doi.org/10.3390/designs3020028 - 11 Jun 2019
Cited by 8 | Viewed by 6316
Abstract
Background: The purpose of this study was to determine if 3D printed lenses with wavelength specific anti-reflective (AR) surface structures would improve beam intensity and thus radar efficiency for a Printed Circuit Board (PCB)-based 60 GHz radar. This would have potential for improved [...] Read more.
Background: The purpose of this study was to determine if 3D printed lenses with wavelength specific anti-reflective (AR) surface structures would improve beam intensity and thus radar efficiency for a Printed Circuit Board (PCB)-based 60 GHz radar. This would have potential for improved low-cost radar lenses for the consumer product market. Methods: A hyperbolic lens was designed in 3D Computer Aided Design (CAD) software and was then modified with a wavelength specified AR structure. Electromagnetic computer simulation was performed on both the ‘smooth’ and ‘AR structure’ lenses and compared to actual 60 GHz radar measurements of 3D printed polylactic acid (PLA) lenses. Results: The simulation results showed an increase of 10% in signal intensity of the AR structure lens over the smooth lens. Actual measurement showed an 8% increase in signal of the AR structure lens over the smooth lens. Conclusions: Low cost and readily available Fused Filament Fabrication (FFF) 3D printing has been shown to be capable of printing an AR structure coated hyperbolic lens for millimeter wavelength radar applications. These 3D Printed AR structure lenses are effective in improving radar measurements over non-AR structure lenses. Full article
(This article belongs to the Special Issue 3D-Printed RF Devices and Antennas)
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