Development of 2-D horn-antenna millimeter-wave imaging device (HMID) for the plasma diagnostics

2017 ◽  
Vol 88 (4) ◽  
pp. 044703 ◽  
Author(s):  
Y. Nagayama ◽  
N. Ito ◽  
D. Kuwahara ◽  
H. Tsuchiya ◽  
S. Yamaguchi
Keyword(s):  
Millimeter Wave ◽  
Plasma Diagnostics ◽  
Horn Antenna ◽  
Imaging Device ◽  
Millimeter Wave Imaging ◽  
Wave Imaging

A high gain patch fed horn antenna for millimeter wave imaging receiver

2005 ◽  
Author(s):  
Rownak Shireen ◽  
Timothy Hwang ◽  
Shouyuan Shi ◽  
D. W. Prather
Keyword(s):  
Millimeter Wave ◽  
Horn Antenna ◽  
High Gain ◽  
Millimeter Wave Imaging ◽  
Wave Imaging ◽  
Imaging Receiver

Performance of a single-collector millimeter-wave imaging device

1970 ◽  
Vol 58 (9) ◽  
pp. 1390-1391
Author(s):  
J.D. Schumacher ◽  
R.C. Hofer ◽  
H. Jacobs
Keyword(s):  
Millimeter Wave ◽  
Imaging Device ◽  
Millimeter Wave Imaging ◽  
Wave Imaging

A new method of out-of-focus millimeter wave imaging in fusion plasma diagnostics using Bessel beams

2018 ◽  
Vol 89 (9) ◽  
pp. 093506 ◽  
Author(s):  
J. X. Li ◽  
Y. L. Zhu ◽  
M. Chen ◽  
J. H. Cao ◽  
J. Dannenberg ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Plasma Diagnostics ◽  
New Method ◽  
Fusion Plasma ◽  
Bessel Beams ◽  
Millimeter Wave Imaging ◽  
Wave Imaging

scholarly journals Quasi-Optical Design of a Millimeter Wave Imaging System

2020 ◽  
Author(s):  
Faeze Jadidi ◽  
Abdollah Eslamimajd ◽  
Alireza Erfaniyan ◽  
Seyed Hossein Mohseni Armaki
Keyword(s):  
Millimeter Wave ◽  
Imaging System ◽  
Optical Design ◽  
Horn Antenna ◽  
Fresnel Lens ◽  
Wave Radiation ◽  
Central Frequency ◽  
Millimeter Wave Imaging ◽  
W Band ◽  
Wave Imaging

Abstract In this paper, we report a complete design and simulation of a quasi-optical millimeter wave imaging system using ZEMAX and FEKO software, respectively. A Fresnel lens and a horn antenna are combined in this this design. Compared to spherical and aspherical lenses, a Fresnel lens can be fabricated much easier at millimeter wavelengths. For focusing millimeter wave radiation, a Fresnel lens can be used to reduce the thickness of the focusing element and to lighten its weight from 25 Kg to 4.5 Kg. A horn antenna with a Gaussian profile and corrugated walls is designed for feeding this system at a central frequency of 94 GHz. The symmetrical radiation pattern of the designed corrugated Gaussian horn in E and H orthogonal planes, its wide bandwidth and low side lobe levels make it a good candidate for feeding a W-band millimeter wave imaging system. The designed quasi-optical imaging system is light-weighted, has high resolution and can be used in detecting hidden objects within a distance of 5 meters with a 30 mm resolution in W-band at a central frequency of 94 GHz.

scholarly journals Quasi-optical Design of a Millimeter Wave Imaging System 

2020 ◽  
Author(s):  
Faeze Jadidi ◽  
Abdollah Eslamimajd ◽  
Alireza Erfaniyan ◽  
Seyed Hossein Mohseni Armaki
Keyword(s):  
Millimeter Wave ◽  
Imaging System ◽  
Optical Design ◽  
Horn Antenna ◽  
Fresnel Lens ◽  
Wave Radiation ◽  
Central Frequency ◽  
Millimeter Wave Imaging ◽  
W Band ◽  
Wave Imaging

Abstract In this paper, we report complete design and simulation of a quasi-optical millimeter wave imaging system with Fresnel lens and horn Antenna using ZEMAX and FEKO softwares, respectively. It is much easier to make a Fresnel lens at millimeter wavelengths compared to spherical and aspherical lenses. The use of Fresnel lens to focus millimeter wave radiation greatly reduces the thickness and also the weight of the focusing element from 25 Kg to 4.5 Kg. A horn antenna with Gaussian profile and corrugated walls at the central frequency of 94 GHz for feeding this system is designed. The symmetry of the designed corrugated Gaussian horn radiation pattern in E and H orthogonal planes, its wide bandwidth as well as its low side lobe levels make it a good candidate for feeding a W band millimeter-wave imaging system. The designed quasi-optical imaging system has low weight with high resolution and can be used to detect hidden objects within a distance of 5 meters with 30 mm resolution in W band at 94 GHz central frequency.

scholarly journals Quasi-Optical Design Of A Millimeter Wave Imaging System

2020 ◽  
Author(s):  
Faeze Jadidi ◽  
Abdollah Eslamimajd ◽  
Alireza Erfaniyan ◽  
Seyed Hossein Mohseni Armaki
Keyword(s):  
Millimeter Wave ◽  
Imaging System ◽  
Optical Design ◽  
Horn Antenna ◽  
Fresnel Lens ◽  
Wave Radiation ◽  
Central Frequency ◽  
Millimeter Wave Imaging ◽  
W Band ◽  
Wave Imaging

Abstract In this paper, we report complete design and simulation of a quasi-optical millimeter wave imaging system with Fresnel lens and horn Antenna using ZEMAX and FEKO softwares, respectively. It is much easier to make a Fresnel lens at millimeter wavelengths compared to spherical and aspherical lenses. The use of Fresnel lens to focus millimeter wave radiation greatly reduces the thickness and also the weight of the focusing element from 25 Kg to 4.5 Kg. A horn antenna with Gaussian profile and corrugated walls at the central frequency of 94 GHz for feeding this system is designed. The symmetry of the designed corrugated Gaussian horn radiation pattern in E and H orthogonal planes, its wide bandwidth as well as its low side lobe levels make it a good candidate for feeding a W band millimeter-wave imaging system. The designed quasi-optical imaging system has low weight with high resolution and can be used to detect hidden objects within a distance of 5 meters with 30 mm resolution in W band at 94 GHz central frequency.

Passive millimeter-wave imaging device for naval special warfare

1998 ◽  
Author(s):  
Frank Downs ◽  
Jody L. Wood-Putnam ◽  
Bradley T. Blume ◽  
Roger M. Smith
Keyword(s):  
Millimeter Wave ◽  
Imaging Device ◽  
Millimeter Wave Imaging ◽  
Wave Imaging ◽  
Passive Millimeter Wave Imaging
Sign in / Sign up

Export Citation Format

Share Document