Development of a High Gain 325–500 GHz Antenna Using Quasi-Planar Reflectors

Fan, Kuikui; Hao, Zhang‐Cheng; Yuan, Quan; Wang, Hong

doi:10.1109/tap.2017.2705022

Cited by 48 publications

(21 citation statements)

References 27 publications

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“…Quasi-optical beam forming networks can be a good alternative to classical BFNs. They can deliver compact, directive, and low loss antennas, but its implementation at sub-THz frequencies becomes challenging and all previous demonstrations were done in PCB [14], [16], LTCC [17], or CNC-milling [18], [19]. The works in [16]- [18] are based on pillbox designs, a topology that was first introduced by Rotman [20] and it is a particular case of quasi-optical BFNs.…”

Section: Introductionmentioning

confidence: 99%

A Low-Profile and High-Gain Frequency Beam Steering Subterahertz Antenna Enabled by Silicon Micromachining

Gomez-Torrent

Garcia-Vigueras

Coq

et al. 2020

IEEE Trans. Antennas Propagat.

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A very low-profile sub-THz high-gain frequency beam steering antenna, enabled by silicon micromachining, is reported for the first time in this paper. The operation bandwidth of the antenna spans from 220 GHz to 300 GHz providing a simulated field of view of 56 •. The design is based on a dielectric filled parallel-plate waveguide (PPW) leaky-wave antenna fed by a pillbox. The pillbox, a two-level PPW structure, has an integrated parabolic reflector to generate a planar wave front. The device is enabled by two extreme aspect ratio, 16 mm x 16 mm large perforated membranes, which are only 30 µm thick, that provide the coupling between the two PPWs and form the LWA. The micromachined low-loss PPW structure results in a measured average radiation efficiency of −1 dB and a maximum gain of 28.5 dBi with an input reflection coefficient below −10 dB. The overall frequency beam steering frontend is extremely compact (24 mm x 24 mm x 0.9 mm) and can be directly mounted on a standard WM-864 waveguide flange. The design and fabrication challenges of such high performance antenna in the sub-THz frequency range are described and the measurement results of two fabricated prototypes are reported and discussed.

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Section: Introductionmentioning

confidence: 99%

A Low-Profile and High-Gain Frequency Beam Steering Subterahertz Antenna Enabled by Silicon Micromachining

Gomez-Torrent

Garcia-Vigueras

Coq

et al. 2020

IEEE Trans. Antennas Propagat.

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“…Antenna arrays with complex feeding networks can provide better directivity and gain but have narrow bandwidth and high loss especially at high THz frequencies due to feeding, and substrate materials losses, which has a great influence on the performance of antennas resulting in a significant decrease in antenna radiation efficiency. Horn antennas 4 , 5 and reflector antennas 6 have been reported with good radiation patterns, low cross-polarization and wide-band operation, but have the shortcoming of bulky size, which makes them difficult to assemble with planar circuits. Lens antennas have also been proposed at higher THz frequencies as good directivity and high gain antennas for broadside radiation 7 – 9 .…”

Section: Introductionmentioning

confidence: 99%

A 300-GHz low-cost high-gain fully metallic Fabry–Perot cavity antenna for 6G terahertz wireless communications

Aqlan

Himdi

Vettikalladi

et al. 2021

Sci Rep

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A low-cost, compact, and high gain Fabry–Perot cavity (FPC) antenna which operates at 300 GHz is presented. The antenna is fabricated using laser-cutting brass technology. The proposed antenna consists of seven metallic layers; a ground layer, an integrated stepped horn element (three-layers), a coupling layer, a cavity layer, and an aperture-frequency selective surface (FSS) layer. The proposed aperture-FSS function acts as a partially reflective surface, contributing to a directive beam radiation. For verification, the proposed sub-terahertz (THz) FPC antenna prototype was developed, fabricated, and measured. The proposed antenna has a measured reflection coefficient below − 10 dB from 282 to 304 GHz with a bandwidth of 22 GHz. The maximum measured gain observed is 17.7 dBi at 289 GHz, and the gain is higher than 14.4 dBi from 285 to 310 GHz. The measured radiation pattern shows a highly directive pattern with a cross-polarization level below − 25 dB over the whole band in all cut planes, which confirms with the simulation results. The proposed antenna has a compact size, low fabrication cost, high gain, and wide operating bandwidth. The total height of the antenna is 1.24 $${\lambda }_{0}$$ λ 0 ($${\lambda }_{0}$$ λ 0 at the design frequency, 300 GHz) , with a size of 2.6 mm × 2.6 mm. The proposed sub-THz waveguide-fed FPC antenna is suitable for 6G wireless communication systems.

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“…Several terahertz antennas have been successfully characterized using a direct far field measurement setup, as reported in [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. In most of these examples, the measured patterns are two-dimensional (2D).…”

Section: Introductionmentioning

confidence: 99%

Some Contributions for Antenna 3D Far Field Characterization at Terahertz

Coq

Mézières

Leroy

et al. 2021

Sensors

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The three-dimensional (3D) characterization of antenna far field patterns at terahertz frequencies is addressed. This task is challenging, because the phase of the electric field is difficult to measure accurately and reliably. From the sub-millimeter wave range, the small wavelength indeed significantly increases the impact of mechanical and electrical errors. Models and procedures to estimate these errors are proposed to mitigate their effects. The 3D far field patterns of a circularly polarized horn measured at 300 GHz and a multibeam pillbox antenna at 270 GHz are shown. The agreement between the 3D measurements and the two-dimensional (2D) patterns of reference as well as the radiated pattern before and after correction demonstrates the interest of the proposed approach and experimentally validate the proposed error estimation procedures. The methodology can be applied to direct far field measurement facilities as well as compact antenna test ranges.

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Development of a High Gain 325–500 GHz Antenna Using Quasi-Planar Reflectors

Cited by 48 publications

References 27 publications

A Low-Profile and High-Gain Frequency Beam Steering Subterahertz Antenna Enabled by Silicon Micromachining

A Low-Profile and High-Gain Frequency Beam Steering Subterahertz Antenna Enabled by Silicon Micromachining

A 300-GHz low-cost high-gain fully metallic Fabry–Perot cavity antenna for 6G terahertz wireless communications

Some Contributions for Antenna 3D Far Field Characterization at Terahertz

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