Wide-band gain enhancement of a pyramidal horn antenna with a 3D-printed epsilon-positive and epsilon-near-zero metamaterial lens

2020 ◽  
pp. 1-9
Author(s):  
Nesem Keskin ◽  
Sinan Aksimsek ◽  
Nurhan Turker Tokan
Keyword(s):  
Low Cost ◽  
Wide Band ◽  
Horn Antenna ◽  
High Gain ◽  
Gain Enhancement ◽  
Radar Systems ◽  
Pyramidal Horn ◽  
3D Printed ◽  
Focused Beams ◽  
Epsilon Near Zero

Abstract In this article, we present a simple, low-cost solution for the gain enhancement of a conventional pyramidal horn antenna using additive manufacturing. A flat, metamaterial lens consisting of three-layer metallic grid wire is implemented at the aperture of the horn. The lens is separated into two regions; namely epsilon-positive and epsilon-near-zero (ENZ) regions. The structure of the ENZ region is constructed accounting the variation of relative permittivity in the metamaterial. By the phase compensation property imparted by the metamaterial lens, more focused beams are obtained. The simulated and measured results clearly demonstrate that the metamaterial lens enhances the gain over an ultra-wide frequency band (10–18 GHz) compared to the conventional horn with the same physical size. A simple fabrication process using a 3D printer is introduced, and has been successfully applied. This result represents a remarkable achievement in this field, and may enable a comprehensive solution for satellite and radar systems as a high gain, compact, light-weighted, broadband radiator.

scholarly journals The Use of 3D Printing Technology for Manufacturing Metal Antennas in the 5G/IoT Context

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3321
Author(s):  
Diogo Helena ◽  
Amélia Ramos ◽  
Tiago Varum ◽  
João N. Matos
Keyword(s):  
3D Printing ◽  
Low Cost ◽  
High Gain ◽  
Central Frequency ◽  
Conductive Filament ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Pyramidal Horn ◽  
3D Printed ◽  
Cost Characteristics

With the rise of 5G, Internet of Things (IoT), and networks operating in the mmWave frequencies, a huge growth of connected sensors will be a reality, and high gain antennas will be desired to compensate for the propagation issues, and with low cost, characteristics inherent to metallic radiating structures. 3D printing technology is a possible solution in this way, as it can print an object with high precision at a reduced cost. This paper presents different methods to fabricate typical metal antennas using 3D printing technology. These techniques were applied as an example to pyramidal horn antennas designed for a central frequency of 28 GHz. Two techniques were used to metallize a structure that was printed with polylactic acid (PLA), one with copper tape and other with a conductive spray-paint. A third method consists of printing an antenna completely using a conductive filament. All prototypes combine good results with low production cost. The antenna printed with the conductive filament achieved a better gain than the other structures and showed a larger bandwidth. The analysis recognizes the vast potential of these 3D-printed structures for IoT applications, as an alternative to producing conventional commercial antennas.

scholarly journals A Horn Antenna Covered with a 3D-Printed Metasurface for Gain Enhancement

Electronics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 119
Author(s):  
Sujan Shrestha ◽  
Affan A. Baba ◽  
Syed Muzahir Abbas ◽  
Mohsen Asadnia ◽  
Raheel M. Hashmi
Keyword(s):  
Phase Transformation ◽  
3D Printing ◽  
Low Cost ◽  
Horn Antenna ◽  
Side Lobe ◽  
Lower Phase ◽  
Gain Enhancement ◽  
Unit Cells ◽  
Phase Variations ◽  
3D Printed

A simple metasurface integrated with horn antenna exhibiting wide bandwidth, covering full Ku-band using 3D printing is presented. It consists of a 3D-printed horn and a 3D-printed phase transformation surface placed at the horn aperture. Considering the non-uniform wavefront of 3D printed horn, the proposed 3D-printed phase transformation surface is configured by unit cells, consisting of a cube in the centre which is supported by perpendicular cylindrical rods from its sides. Placement of proposed surface helps to improve the field over the horn aperture, resulting in lower phase variations. Both simulated and measured results show good radiation characteristics with lower side lobe levels in both E- and H-planes. Additionally, there is an overall increment in directivity with peak measured directivity up to 24.8 dBi and improvement in aperture efficiency of about 35% to 72% in the frequency range from 10–18 GHz. The total weight of the proposed antenna is about 345.37 g, which is significantly light weight. Moreover, it is a low cost and raid manufacturing solution using 3D printing technology.

Horn Antenna

2020 ◽  
pp. 144-177
Author(s):  
Hirokazu Kobayashi
Keyword(s):  
Cross Sections ◽  
Wide Band ◽  
Horn Antenna ◽  
High Gain ◽  
Field Method ◽  
Common Element ◽  
Microwave Antennas ◽  
Gain Measurement ◽  
Pyramidal Horn ◽  
Overall Performance

One of the simple and most widely used microwave antennas is the horn as a feed element for large radio telescopes, satellite tracking, and communication reflector, which are found installed throughout the world. In addition to its utility as a feed for reflectors and lenses, it is a common element of phased arrays and serves as a universal standard for calibration and gain measurement of other high gain antennas. Its widespread applicability stems from its simplicity in construction, ease of excitation, large gain, wide-band characteristics, and preferred overall performance. An electromagnetic horn can take many different forms, such as basic pyramidal, conical, corrugated, double-ridged, and dual polarized horns, as well as horns with lens and so on. The horn is nothing more than a hollow pipe of different cross-sections, which has been tapered to a larger opening aperture. This chapter explains the fundamentals of the pyramidal horn antenna in detail using aperture field method. Numerical and measured examples, are also shown.

3D Printed Wideband Circularly Polarized Pyramidal Horn Antenna with Binomial Polarizer for CP-SAR Application

2020 ◽  
Author(s):  
Agus Hendra Wahyudi ◽  
Josaphat Tetuko Sri Sumantyo ◽  
Folin Oktafiani ◽  
Hardi Nusantara ◽  
Ari Sugeng Budiyanta ◽  
...  
Keyword(s):  
Horn Antenna ◽  
Circularly Polarized ◽  
Pyramidal Horn ◽  
3D Printed

3D printed pyramidal horn antenna for K band frequency applications

2020 ◽  
Author(s):  
Luis Cuevas ◽  
Guillaume Serandour ◽  
Rafael Rodriguez ◽  
Daniel Lühr ◽  
Rodrigo Reeves
Keyword(s):  
Horn Antenna ◽  
Band Frequency ◽  
Pyramidal Horn ◽  
3D Printed ◽  
K Band

Gain enhancement of UWB antenna using partially reflective surface

2018 ◽  
Vol 10 (7) ◽  
pp. 835-842 ◽  
Author(s):  
Pravin R. Prajapati ◽  
Shailesh B. Khant
Keyword(s):  
Coplanar Waveguide ◽  
Wide Band ◽  
High Gain ◽  
Uwb Antenna ◽  
Gain Enhancement ◽  
Reflective Surface ◽  
Radiating Element ◽  
Fabry Perot ◽  
Flat Edge

AbstractThis paper proposes, a high gain, Fabry Perot cavity antenna with coplanar waveguide (CPW) fed ultra wide band (UWB) radiating element. The proposed antenna has flat edge arrow shape-based radiating element, which act as a main radiating element and responsible for UWB radiation. This UWB microstrip antenna is parasitically coupled with an array of square parasitic patches (PPs), which act as partially reflective surface. The square patches are fabricated at the bottom of inexpensive FR4 substrate and suspended in the air with the help of dielectric rods at 1.5λ0 height. High gain is obtained by resonating PPs at near close frequencies of 3.8–8.8 GHz UWB, where partially reflective surface gives almost positive reflection phase gradients. Two laboratory prototypes of antenna, one with and another without partially reflective surface are fabricated and tested. Details of the proposed antenna design and role of partially reflective surface in gain enhancement of planar CPW fed UWB antenna are described, and typical experimental results are presented and discussed.

scholarly journals 3D printing of CF/nylon composite mold for CF/epoxy parabolic antenna

2020 ◽  
Vol 15 ◽  
pp. 155892502096948
Author(s):  
Yi Chen ◽  
Jiang Lu ◽  
Qing Guo ◽  
Lei Wan
Keyword(s):  
3D Printing ◽  
Satellite Communication ◽  
Coefficient Of Thermal Expansion ◽  
Low Cost ◽  
High Gain ◽  
High Profile ◽  
Parabolic Antenna ◽  
3D Printed ◽  
Point To Point ◽  
Nylon Composite

Parabolic antennas, which are wildly used as high-gain antennas for point-to-point communications, need many iterations of design-fabrication-test in parabolic antenna development. However, traditional molding via mechanical processing takes a long manufacturing cycle and high cost. In this paper, a 3D-printed CF/nylon composite parabolic mold for CF/epoxy parabolic antenna is studied. It’s found that the coefficient of thermal expansion (CTE) of 3D-printed CF/nylon composite is usually anisotropic due to the low adhesion between printed layers and the aligned short carbon fiber along the printing trace. Here an inclined mode of 3D printing could uniform the CTE of the antenna mold and solve the problems of large printing steps and the separation of supports and mold occurred in horizontal and vertical modes, respectively. The parabolic mold also reveals high profile precision with a low root mean square (RMS) deviation of 0.14 mm. Utilizing the 3D-printed CF/nylon composite mold, parabolic antenna skin with low surface RMS deviation of 0.16 mm was successfully fabricated by laying CF/epoxy prepreg and curing in autoclave. This research about isotropic and smooth 3D-printed CF/nylon mold may support the low-cost and rapid mold development for microwaves relay links on ground and satellite communication antennas.

3D Printed Wideband Circularly Polarized Pyramidal Horn Antenna

2018 ◽  
Author(s):  
Agus Hendra Wahyud ◽  
Josaphat Tetuko Sri Sumantyo ◽  
Ari Sugeng Budiyanta ◽  
Achmad Munir
Keyword(s):  
Horn Antenna ◽  
Circularly Polarized ◽  
Pyramidal Horn ◽  
3D Printed
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