Multilayer offset Fresnel zone plate reflector

Guo, Y. Jay; Sassi, Imene; Barton, S.K.

doi:10.1109/75.294291

Cited by 13 publications

(4 citation statements)

References 7 publications

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“…There are two types of zone plates: one where alternative concentric zones are made opaque or reflecting [15] and the second where phase correction is introduced in successive zones [16]. The second case can be implemented using a single dielectric or with two or more different dielectrics [17]. There are some works that describe the principle of combining microstrip patches on a Fresnel zone reflector.…”

Section: Design Methodsmentioning

confidence: 99%

Broadband design of a low‐profile reflector antenna

Tayebi

Gómez

Gónzalez

et al. 2013

IET Microwaves, Antennas & Propagation

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This work presents the design and analysis of a modified Fresnel zone plate reflector for broadband operation. A new technology based on slight deformations on a flat metallic surface is applied to obtain the geometrical model of the proposed flat reflector antenna. In comparison with reflectarrays, Fresnel zone reflectors are lossless, low cost, easy to fabricate and broadband. According to the specifications of a previously published reflectarray, a centre-fed prototype whose dimensions are 28 × 21 cm has been designed and analysed showing a maximum gain of 28.06 dBi at 12.5 GHz and a 32.8% 3 dB gain bandwidth in the range between 10.4 and 14.5 GHz. A second prototype has been designed and analysed to evaluate the performance of the proposed design method compared with a previous design of a Fresnel zone reflector. Better results in terms of gain and antenna efficiency have been obtained.

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Section: Design Methodsmentioning

confidence: 99%

Broadband design of a low‐profile reflector antenna

Tayebi

Gómez

Gónzalez

et al. 2013

IET Microwaves, Antennas & Propagation

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“…It is well known that the influence of the feed blockage will seriously affect the measurement results. On the other hand, almost all the feeding sources of reflector antennas in literatures are horn antennas or open-end waveguides [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], leading to bulky volumes. To make the reflector antennas compact, it is necessary to investigate the application of planar feeding sources to reflector antennas.…”

Section: Fzp Reflector Fabricationmentioning

confidence: 99%

“…Reflectarrays with continuous phase compensation have relatively high radiation efficiency but need a phase correction range of 360 • , which would affect the element size and thickness. Fresnel zone plate (FZP) reflector antennas [8][9][10][12][13][14], however, have lower efficiency and hence gained fewer applications in the past. Recently, artificial materials and metasurfaces have attracted more and more attention due to their capability to manipulate the amplitude and phase of incoming waves.…”

Section: Introductionmentioning

confidence: 99%

Wideband High-Efficiency Fresnel Zone Plate Reflector Antennas Using Compact Subwavelength Dual-Dipole Unit Cells

Liu¹,

Chen²,

Ge³

2018

PIER C

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In this paper, wideband high-efficiency Fresnel zone plate (FZP) reflector antennas are investigated and developed. Two simple dual-dipole unit cells with different periodicity sizes are first characterized for the design of Fresnel zone plate reflector antennas. The gain bandwidth of the FZP reflector antennas is then theoretically investigated using the two unit cells. Based on the results, a wideband high-efficiency FZP reflector containing 15 correcting zones is designed using the unit cell with a smaller size and quarter-wavelength correction phases. A standard pyramidal horn and a slotfed patch antenna are applied to feed the FZP reflector alternately. With a feed horn, the wideband high-efficiency radiation performance including a peak gain of 32.1 dBi and an aperture efficiency of 58.2% can be achieved. By using the designed planar feeder, a compact FZP reflector antenna can be obtained with compromised radiation performance. All are demonstrated by experiments.

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“…Basically, there are two types of zone plates: one where alternative concentric zones are made opaque or reflecting [11] and the second where phase correction is introduced in successive zones [12]. The second case can be implemented using a single dielectric or with two or more different dielectrics [13]. There are some works that describe the principle of combining microstrip patches on a FZPA.…”

Section: Introductionmentioning

confidence: 99%

Metal‐only Fresnel zone plate antenna for millimetre‐wave frequency bands

Gómez

Tayebi

Lucas

et al. 2014

IET Microwaves, Antennas & Propagation

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A metal‐only Fresnel zone plate antenna (FZPA) to operate at millimetre wave frequency bands is presented in this work. The proposed antenna is a very attractive alternative to parabolic reflectors and reflectarrays because of its several advantages such as low profile, low cost, easy to manufacture and lossless. A centre‐fed Fresnel zone plate whose diameter is 300 mm has been designed and analysed at 75 GHz providing a gain of 44.29 dBi, an aperture efficiency of 48.42% and a cross‐polarised level lower than −40 dB for the diagonal plane (ϕ = 45°). A second prototype has been designed and analysed from 54 to 68 GHz to evaluate the performance of the proposed antenna compared with an already published FZPA.

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Multilayer offset Fresnel zone plate reflector

Cited by 13 publications

References 7 publications

Broadband design of a low‐profile reflector antenna

Broadband design of a low‐profile reflector antenna

Wideband High-Efficiency Fresnel Zone Plate Reflector Antennas Using Compact Subwavelength Dual-Dipole Unit Cells

Metal‐only Fresnel zone plate antenna for millimetre‐wave frequency bands

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