Low-Profile Slot Transmitarray Antenna

Rahmati, B.; Hassani, Hamid Reza

doi:10.1109/tap.2014.2368576

Cited by 125 publications

(45 citation statements)

References 14 publications

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“…Recently, some scholars proposed a specially designed unit cell without air gap to achieve desirable performance. A low profile transmitarray antenna is proposed in [5]. The transmitarray achieves 1-dB gain bandwidth of 5.7%, and its thickness is only 0.033λ 0 .…”

Section: Introductionmentioning

confidence: 99%

Circularly Polarized Transmitarray Antenna Using Low-Profile Dual-Linearly Polarized Elements

Tian

Jiao

Zhao

2017

Antennas Wirel. Propag. Lett.

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We propose a low-profile dual-linearly-polarized unit cell in X-band, and its capability is demonstrated by a circularly polarized transmitarray. The unit cell comprises three metallic layers etched on two dielectric slabs without air gap. Cross strips are inserted in cross slots on the top and bottom layers, and the T-slot structure is etched on the middle layer. The proposed unit cell has high isolation between the dual polarizations, and its total thickness is only 1 mm. Prototype of a 341-element transmitarray, which transforms the incident linearly polarized wave into the outgoing circularly polarized wave, is also fabricated and tested. The measured results show that the proposed transmitarray realizes 3.5% (9.8-10.15 GHz) axial ratio bandwidth and 4% (9.7-10.1 GHz) 1-dB gain bandwidth. The measured peak gain at 10 GHz is 21.9 dBi, with the aperture efficiency of 36%.

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Section: Introductionmentioning

confidence: 99%

Circularly Polarized Transmitarray Antenna Using Low-Profile Dual-Linearly Polarized Elements

Tian

Jiao

Zhao

2017

Antennas Wirel. Propag. Lett.

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“…1 indicate that the focusing MSs can be applied to the design of high gain planar lens antenna by properly locating feed sources over the surfaces [10]. This kind of lens antenna can also be called as transmittarray [27,28]. These focusing MSs usually have single operating band.…”

Section: Introductionmentioning

confidence: 99%

An X/Ku-Band Focusing Anisotropic Metasurface for Low Cross-Polarization Lens Antenna Application

Li¹,

Wang²,

Gao³

et al. 2017

PIER

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Abstract-An X/Ku-band flat lens antenna based on a dual-frequency anisotropic metasurface is proposed in this paper. The function of the anisotropic metasurface is to focus the incident plane waves around 10 GHz and 14 GHz on different spots. Then we place a Vivaldi antenna with its phase centers at 10 GHz and 14 GHz well matching the focal spot of the metasurface at each frequency to build a flat lens antenna. The lens antenna has a peak gain of 18.5 dB and cross-polarization levels of lower than −20 dB at 10 GHz with −1 dB gain bandwidth of 9.8-10.4 GHz, while it has a peak gain of 18.8 dB and cross-polarization levels of lower than −30 dB at 14 GHz with the bandwidth of 13.8-14.2 GHz. Besides single working band, the antenna can simultaneously operate at 10 GHz and 14 GHz with gains of 16.2 dB and 16.5 dB, respectively. Measured results have a good agreement with the simulated ones.

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“…Transmitarray antenna is another kind of high gain antenna newly emerged in recent years [3,4]. A transmitarray antenna consists of a feed antenna and a flat array with many radiating elements.…”

Section: Introductionmentioning

confidence: 99%

Design of a Novel Ku/X-Band Reflectarray/Transmit-Array Antenna With Frequency Selective Surface

Xue¹,

Wang²,

Dong³

et al. 2017

PIER C

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Abstract-A planar reflectarray/transmitarray antenna which reflects/transmits the incident fields radiating from feed antenna is presented. The antenna works as a reflectarray at 13.85 GHz and a transmitarray at 8 GHz. The unit cell is composed of three layers. The first layer consists of a crosseddipole element and a square ring frequency selective surface (FSS) on the top and bottom surfaces of a dielectric substrate. The second and third layers are identical and consist of a square ring slot element on both sides of a dielectric substrate. An air gap is inserted between layers. The aperture of the antenna is 225 mm which equals 10.4 wavelengths at 13.85 GHz and 6 wavelengths at 8 GHz. The reflectarray/transmitarray antenna is fabricated, and NSI planar near-field system is used to measure the performances of the prototype. Good agreement between the simulated and measured results has been achieved. The measured gain is 27.1 dB in reflection mode at 13.85 GHz resulting in a 38% aperture efficiency and 23.1 dB in transmission mode at 8 GHz resulting in a 45.7% aperture efficiency.

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Low-Profile Slot Transmitarray Antenna

Cited by 125 publications

References 14 publications

Circularly Polarized Transmitarray Antenna Using Low-Profile Dual-Linearly Polarized Elements

Circularly Polarized Transmitarray Antenna Using Low-Profile Dual-Linearly Polarized Elements

An X/Ku-Band Focusing Anisotropic Metasurface for Low Cross-Polarization Lens Antenna Application

Design of a Novel Ku/X-Band Reflectarray/Transmit-Array Antenna With Frequency Selective Surface

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