Some Methods of Reducing the Sidelobe Radiation of Existing Reflector and Horn Antennas

Kerdemelidis, V.; James, G.L.; Smith, Brian Alexander

doi:10.1007/978-1-4612-3330-5_8

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…This noise can be suppressed by a few enhancement techniques and many methods are available for side lobe reduction. Wavelet transform (WT) is an example of side lobe reduction methods that has been proposed for demodulation using the Fourier transform (FT) [30][31][32].…”

Section: -Introductionmentioning

confidence: 99%

Quasi-Optical Design of a Millimeter Wave Imaging System

Jadidi

Eslamimajd

Erfaniyan

et al. 2020

Preprint

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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.

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Section: -Introductionmentioning

confidence: 99%

Quasi-Optical Design of a Millimeter Wave Imaging System

Jadidi

Eslamimajd

Erfaniyan

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

Quasi-optical design of a millimeter wave imaging system

2021

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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 quasioptical 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.

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Some Methods of Reducing the Sidelobe Radiation of Existing Reflector and Horn Antennas

Cited by 2 publications

References 13 publications

Quasi-Optical Design of a Millimeter Wave Imaging System

Quasi-Optical Design of a Millimeter Wave Imaging System

Quasi-optical design of a millimeter wave imaging system

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