Design of a Compact Gaussian Profiled Corrugated Horn Antenna for Low Sidelobe-Level Applications

Salimi, Tohid; Maghoul, Amir; Abbasid, Ali A.

doi:10.7763/ijcte.2013.v5.682

Cited by 13 publications

(4 citation statements)

References 6 publications

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“…Gaussian horn antenna should be fed by a purely HE 11 mode. Therefore, in the horn neck area, the impedance converter is used to accommodate flat single-mode waveguide TE 11 with corrugated waveguide [42]. This mode converter usually starts with a single-mode circular flat propagator waveguide, TE 11 and terminates at the opening diameter required for phasing section used to feed horn antenna with Gaussian profile.…”

Section: -4-1 Mode Convertermentioning

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 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.

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Section: -4-1 Mode Convertermentioning

confidence: 99%

Quasi-Optical Design Of A Millimeter Wave Imaging System

Jadidi

Eslamimajd

Erfaniyan

et al. 2020

Preprint

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“…The types of internal corrugated profiles can select linear, sinusoid, tangential, exponential, hyperbolic, or polynomial and so on. Nevertheless, the phase of both fields is not coincidence matching thus increases a phase stability period to achieve the field in phase at the aperture, where the phase stability section has a single-slot depth [14,16].…”

Section: The Corrugated Feedmentioning

confidence: 99%

“…It can finish a transformation of circular waveguide mode from fundamental TE 11 mode to balanced hybrid HE 11 mode in the horn aperture, where the aperture field has the characteristics of very low crosspolarization level and circular symmetrical radiation pattern with Gaussian distribution characteristic [14][15][16][17]. In the higher frequency band, limited by high machining accuracy in the grooves and junction, the machining quality of corrugated horn can easily affect its far-field pattern that leads to nonuniformity symmetrical Gaussian distribution due to the decreasing of main mode HE 11 .…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Comparison Results of Dual-Channel 3D Quasi-Optical Network System between Frequency Selective Surface and Wire Grid Polarizer

Hai

Liu

et al. 2018

International Journal of Antennas and Propagation

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A dual-channel 3D quasi-optical network (QON) system is analyzed and compared by theoretical and experimental results. It is divided into dual-channel signals by frequency selective surface (FSS) or wire grid polarizer (WGP) for transmitting the 324 GHz signal on the top layer while diverting the 183 GHz signal to the bottom layer. The system structure based on the beam radius is traced by the complex beam parameter and system transfer matrix for deciding the positions of cascade mirrors. The design principles and test results of FSS with perforated hexagonal array and WGP printed on the dielectric substrate are discussed together. In order to evaluate channel performance, the output planar near-fields of QON system are simulated and tested by the four reflections and three transmission results, respectively, where both scalar and vector conversion efficiencies are used to evaluate the quality of output beams. For the distortion phenomenon and energy loss in planar field, the aperture modes of corrugated horn feeds are analyzed by spherical wave expansion (SWE) to explain the asymmetrical pattern characteristic. The cut section of the far-field pattern is also directly measured in the compact antenna test range (CATR), comparing with the far-field patterns that are indirectly obtained based on the principle of near-to-far-field transformation and ideal aperture field integral of quiet zone (QZ). The differences between the near-and far-field test in QON have been compared, and discussion that the corresponding experimental results verify the WGP has better work performance in the good pattern symmetry, high cross-polarization isolation, low energy loss, and side-lobe level.

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“…Generally, the corrugated horn consisting of parallel slots or grooves can create a hybrid-mode pattern in the aperture which straightens out the electric field and reduces diffractions from the edge [11,12]. In [13][14][15][16][17][18], the conical corrugated horn antennas were utilized to generate the symmetrical beam with high gain and low side lobe level. The antennas structures are however complicated.…”

Section: Introductionmentioning

confidence: 99%

Design of Symmetrical Beam Triple-Aperture Waveguide Antenna for Primary Feed of Reflector

Nuangwongsa

Phongcharoenpanich

2016

International Journal of Antennas and Propagation

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This research presents a triple-aperture waveguide antenna as the primary feed of parabolic reflectors. The proposed antenna is able to rectify the asymmetry and also achieve a symmetrical unidirectional beam through the application of two parasitic coupling apertures. The design of the antenna is that of a rectangular waveguide (radiating aperture) vertically jointed to the two coupling apertures of the same measurement widthwise (i.e., one stacked on top and the other underneath) to achieve the symmetrical beam. The rectangular waveguide is 97.60 mm and 46.80 mm in width (a) and height (b), respectively, to propagate the WLAN frequency band of 2.412–2.484 GHz. Simulations were carried out to determine the optimal antenna parameters and an antenna prototype was subsequently fabricated and tested. The simulated beamwidths in theE- andH-planes at-3 dB were equally 67° (i.e., 67° for both theE- andH-planes) and at-10 dB also equally 137°, while the measured results at-3 dB were equally 65° and at-10 dB equally 135°. The simulation and measured results are thus in good agreement. The simulated and measured antenna gains are, respectively, 8.25 dBi and 9.17 dBi. The findings validate the applicability of the antenna as the prime feed for rotationally symmetric parabolic reflectors.

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Design of a Compact Gaussian Profiled Corrugated Horn Antenna for Low Sidelobe-Level Applications

Cited by 13 publications

References 6 publications

Quasi-Optical Design Of A Millimeter Wave Imaging System

Quasi-Optical Design Of A Millimeter Wave Imaging System

Theoretical and Experimental Comparison Results of Dual-Channel 3D Quasi-Optical Network System between Frequency Selective Surface and Wire Grid Polarizer

Design of Symmetrical Beam Triple-Aperture Waveguide Antenna for Primary Feed of Reflector

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