Millimeter wave twist reflector design aspects

A new configuration of self-polarizing Fabry-Perot (FP) antenna is presented to generate circular polarization with high gain levels using a simple linearly-polarized feed. It consists of a FP resonator combined with a polarization-twisting ground plane. An analytical model is proposed to facilitate the antenna design, and the corresponding results are shown to be in very close agreement with full-wave simulations. The experimental prototype built in C-band exhibits a combined bandwidth (3 dB axial ratio, 3dB gain drop, and -10 dB impedance matching) of 3% with a maximum realized gain of 18.0 dB. The antenna is completely shielded with an aperture size of 4.0λ 0  4.0λ 0 and a height of only λ 0 . Such antennas are attractive candidates for high-power space applications at low frequencies (L-to C-bands) where standard horns are very bulky.

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“…A similar concept has been reported in literature for the design of folded reflectarrays using a planar polarization twister, e.g. [13], [14].…”

Section: A Basic Idea and Antenna Geometrymentioning

confidence: 68%

Self-Polarizing Fabry–Perot Antennas Based on Polarization Twisting Element

Muhammad

Sauleau

Valerio

et al. 2013

IEEE Trans. Antennas Propagat.

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“…The twist-reflector [12] is a polarization sensitive device consisting of a unidirectional planar grid, which rotates the polarization of the incident wave after reflection by 90 0 . The metal strips of the grid should be oriented at 45 0 relatively to the electric field of the incident wave.…”

Section: Twist-reflectormentioning

confidence: 99%

Millimeter-wave high gain lens antenna with reduced focus distance

Soykin

Artemenko

Mozharovskiy

et al. 2016

2016 10th European Conference on Antennas and Propagation (EuCAP)

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Design of a 57-64 GHz high gain lens antenna with reduced focus distance is presented. The antenna is composed of a thin lens with a waveguide feed element, and trans-and twistreflectors realized using a PCB technology. The antenna structure forces the radiation emitted by the feed to travel between the reflectors and to radiate from the lens. Such behavior is achieved by polarization-selective properties of the reflectors. As a result, the focus distance of a thin lens is reduced by 3 times with maintaining antenna high electric performance and beam scanning capabilities. Antenna prototype with 120 mm diameter and only 65 mm lateral dimension was designed and experimentally investigated. The antenna has less than -12.4 dB reflection coefficient and more than 33.9 dBi gain in the 57-64 GHz frequency range making the proposed concept perspective for applications in point-to-point radio systems. Index Terms-lens antenna, twist-and trans-reflectors, beam scanning, millimeter-wave.I.

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“…Polarization twist antenna was explored by several investigators. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] Complicated mode matching analysis for trans-reflector and twist-reflector designs were given in Reference [1]. Spectral iteration technique using integral equation approach was studied in Reference [2], which involved intensive numerical computations.…”

Section: Introductionmentioning

confidence: 99%

“…15 It is apparent that in designs 1-4 complicated analysis techniques with intensive numerical computations were involved. Relatively simpler analysis techniques with relatively easier computations were employed in References [5][6][7][8]. Use of frequency selective elements and meandering for twist reflector were conceived in References [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Polarization twist reflector antenna — A systematic design approach

Chakrabarti

2021

Int J RF Mic Comp-Aid Eng

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In this paper, we present an easy and systematic design approach to realize a polarization twist reflector antenna. Detail description has been provided on how to design a transreflector antenna and its constituents including the transreflector, the polarization twist-reflector, and the feed horn. Simple relations for calculation of reflection coefficients of the trans-reflector and the twist-reflector with plane wave incidence have been considered. Simple transmission line model based analyses have been presented. As it does not involve any integral equation or summation of series of some functions, the final results can be obtained within few seconds with the minimum computational resource requirement. Conductive gratings have been conceived for both trans-reflector and twist-reflector. Their performances have been optimized individually in terms of their grating parameters. A linearly polarized pyramidal horn located at the prime focus of the transreflector has been used for the excitation. A prototype of the complete antenna has been designed at Ka-band, fabricated and experimentally measured. 19% impedance bandwidth with average gain of ≈32.3 dBi has been demonstrated.

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Millimeter wave twist reflector design aspects

Cited by 14 publications

References 5 publications

Self-Polarizing Fabry–Perot Antennas Based on Polarization Twisting Element

Self-Polarizing Fabry–Perot Antennas Based on Polarization Twisting Element

Millimeter-wave high gain lens antenna with reduced focus distance

Polarization twist reflector antenna — A systematic design approach

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