Terahertz Horn Antenna Based on Hollow-Core Electromagnetic Crystal (EMXT) Structure

Wu, Ziran; Liang, Min; Ng, Wei-Ren; Gehm, Michael E.; Xin, Hao

doi:10.1109/tap.2012.2211318

Cited by 62 publications

(22 citation statements)

References 26 publications

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“…Wu et al conducted a series of experiments on the polymer jetting (PJ) technology. They firstly reported a 600 GHz woodpile structure (WPS) EBG and a 350 GHz Johnson EBG in 2008 [14], a G-band (140-220 GHz) hollow-core electromagnetic crystal (EXMT) waveguide in 2011 [15], and a D-band hollow-core EXMT antenna of 25 dBi gain in 2012 [16]. A Q-band (33-50 GHz) Luneburg lens was printed by Nguyen in 2010 [17], with 55-65 GHz bandwidth and 21 dBi gain.…”

Section: Review Of 3d Printed Millimeter-wave and Terahertz Passive Dmentioning

confidence: 99%

Review of 3D Printed Millimeter-Wave and Terahertz Passive Devices

Zhang

Chen

et al. 2017

International Journal of Antennas and Propagation

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The 3D printing technology is catching attention nowadays. It has certain advantages over the traditional fabrication processes. We give a chronical review of the 3D printing technology from the time it was invented. This technology has also been used to fabricate millimeter-wave (mmWave) and terahertz (THz) passive devices. Though promising results have been demonstrated, the challenge lies in the fabrication tolerance improvement such as dimensional tolerance and surface roughness. We propose the design methodology of high order device to circumvent the dimensional tolerance and suggest specific modelling of the surface roughness of 3D printed devices. It is believed that, with the improvement of the 3D printing technology and related subjects in material science and mechanical engineering, the 3D printing technology will become mainstream for mmWave and THz passive device fabrication.

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Section: Review Of 3d Printed Millimeter-wave and Terahertz Passive Dmentioning

confidence: 99%

Review of 3D Printed Millimeter-Wave and Terahertz Passive Devices

Zhang

Chen

et al. 2017

International Journal of Antennas and Propagation

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“…The measured loaded Q-factor of the cavity was 205 at 10.25 GHz and the filter had a 3.9 % fractional bandwidth and 2.1 dB insertion loss; compared to a simulated 5.1 % fractional bandwidth and 1.9 dB insertion loss. The second polyjet example is a millimeter-wave electromagnetic band gap (EBG) material electromagnetic crystal (EXMT) waveguide horn antenna [8], where the triangular lattice of air holes creates a bandgap and the defects in the lattice forms the antenna. The antenna is designed to operate at multiple pass bands and at 146 GHz shows a 10° 3 dB beam width, with first side lobe suppression of 20 dB.…”

Section: B Polyjet Printingmentioning

confidence: 99%

3-D printing of microwave components for 21st century applications

Otter

Lucyszyn

2016

2016 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-A

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Abstract-Additive manufacturing using 3-D printing is an emerging technology for the production of high performance microwave and terahertz components. Traditionally, these components are made by (micro-)machining. However, recent advances in rapid prototyping technology have led to its use in creating high performance and low weight RF components. In this review paper ten state-of-the-art exemplars are described, covering a wide variety of applications (absorbers, waveguides, antennas and lenses) operating over a broad range of frequencies, from 8 to 330 GHz.

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“…As a cost-effective, fast, convenient fabrication technique, 3D printing is able to produce devices accurately with good repeatability, and hence it has attracted much attention for the fabrication of functional THz components, such as waveguides [17], [18], [38], fibers [39], lenses [40], antenna horns [41], and sensors [19]. 3D printing is also ideal for the fabrication of highly porous structures, which is a challenge for other techniques, such as molding, drawing, rolling, and extrusion, owing to the deformation encountered during processing [7].…”

mentioning

confidence: 99%

Low-Loss Asymptotically Single-Mode THz Bragg Fiber Fabricated by Digital Light Processing Rapid Prototyping

Hong

Swithenbank

Greenall

et al. 2018

IEEE Trans. THz Sci. Technol.

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Abstract-In this paper, the design and measurement of a 3D-printed low-loss asymptotically single-mode hollow-core terahertz Bragg fiber is reported, operating across the frequency range from 0.246 to 0.276 THz. The HE11 mode is employed as it is the lowest loss propagating mode, with the electromagnetic field concentrated within the air core as a result of the photonic crystal bandgap behavior. The HE11 mode also has large loss discrimination compared to its main competing HE12 mode. This results in asymptotically single-mode operation of the Bragg fiber, which is verified by extensive simulations based on the actual fabricated Bragg fiber dimensions and measured material parameters. The measured average propagation loss of the Bragg fiber is lower than 5 dB/m over the frequency range from 0.246 to 0.276 THz, which is, to the best of our knowledge, the lowest loss asymptotically single-mode all-dielectric microstructured fiber yet reported in this frequency range, with a minimum loss of 3 dB/m at 0.265 THz.Index Terms-Bragg fiber, electromagnetic propagation, millimeter wave technology, photonic crystals, three-dimensional printing.

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Terahertz Horn Antenna Based on Hollow-Core Electromagnetic Crystal (EMXT) Structure

Cited by 62 publications

References 26 publications

Review of 3D Printed Millimeter-Wave and Terahertz Passive Devices

Review of 3D Printed Millimeter-Wave and Terahertz Passive Devices

3-D printing of microwave components for 21st century applications

Low-Loss Asymptotically Single-Mode THz Bragg Fiber Fabricated by Digital Light Processing Rapid Prototyping

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