A beam scanning Fabry–Pérot cavity antenna for millimeter‐wave applications

Lan, Jianghong; Sun, Baohua; Yan, W.; Mi, Meng-Yao

doi:10.1002/mmce.21570

Cited by 6 publications

(3 citation statements)

References 13 publications

(16 reference statements)

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“…Fabry-Perot (FP) antennas, also known as FP resonator antennas, electromagnetic band gap (EBG) resonator antennas, 2-D leaky-wave antennas, resonant cavity antennas and PRS antennas, have attracted extensive attention due to their advantages of planar structure, high gain, strong directivity, simple feeding network, and easy fabrication. [1][2][3][4][5][6][7][8] Also, the dualpolarized FP antennas have broad application prospects in the field of wireless communications, and they have the ability to improve the spectral efficiency, increase channel capacity, reduce the installation space, and overcome the polarization mismatch between the transmitter and the receiver.…”

Section: Introductionmentioning

confidence: 99%

A dual‐polarized wideband gain enhancement Fabry–Perot antenna by adopting a wedge‐shaped phase correcting structure

Liu

Zhou

et al. 2022

Int J RF Mic Comp-Aid Eng

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A dual-polarized wideband Fabry-Perot (FP) antenna based on a wedgeshaped phase correcting structure (WPCS) is proposed. The antenna adopts a wideband dual-linear polarized slot-coupled antenna as a primary antenna, and adopts a single-layer FSS structure with positive reflection phase gradient characteristics as a partially reflecting surface (PRS) of the FP resonator, to optimally excite the FP cavity resonances within a wide operating band. Moreover, a small circular metal patch array is printed on the other side of the FSS unit structure. The small circular patch array effectively increases the reflection amplitude without changing the positive reflection phase gradient characteristics of the PRS, which improves the FP antenna gain. In addition, a highly graded WPCS is loaded in the resonant cavity to properly compensate the phase between different reflection paths inside the resonant cavity, which enhances the gain of the FP antenna in a wide band. Finally, the measured peak gains of the FP antenna under the excitation of Port 1 and Port 2 are 16.0 dBi and 15.89 dBi, respectively, and the gain enhancement can reach up to 3 dBi after loading the WPCS. The measured 10-dB impedance-matching operating bandwidth of dual-polarized common coverage is 14.08 to 16.45 GHz (15.53%).

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Section: Introductionmentioning

confidence: 99%

A dual‐polarized wideband gain enhancement Fabry–Perot antenna by adopting a wedge‐shaped phase correcting structure

Liu

Zhou

et al. 2022

Int J RF Mic Comp-Aid Eng

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“…For this purpose, the high gain planar antenna such as the resonant cavity Fabry Perot structure appears to be a good choice. [11][12][13][14] In the past, the MS has been utilized to improve the directivity of the reference antenna without significantly increasing its overall size. [15][16][17][18][19][20][21] However, for such types of MS based structures, the gap between the antenna and the partially reflecting surface mainly increases the profile of the overall antenna system.…”

Section: Introductionmentioning

confidence: 99%

Near field microwave subsurface imaging using metasurface loaded planar antenna and synthetic aperture radar (SAR) technique

Paul

Akhtar

2021

Int J RF Microw Comput Aided Eng

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A novel near field subsurface microwave imaging scheme is proposed by using a high gain planar metasurface (MS) loaded slot antenna integrated with the synthetic aperture radar (SAR) algorithm. The antenna structure here comprises a slot antenna integrated with the proposed MS designed using the epsilon very large (EVL) unit cell. The proposed MS-based antenna structure has a very low profile of 0.033λ, with a measured peak gain of 5.5 dB at 6.47 GHz. After adding two more additional MS layers, the peak gain of the resultant antenna is 12.1 dB. The broadside gain and efficiency are significantly enhanced with the incorporation of the EVL MS. Afterward, the antenna structure, along with the vector network analyzer and the 2-D automated scanner is employed for the near field imaging of test media by recording the scattering data along the target area. A spatial subwavelength resolution with a typical value of about 0.43λ is obtained at 1λ standoff distance after applying the single frequency SAR algorithm to the measured raw scattering data. The overall applicability of the proposed low-profile MS loaded antenna integrated with the SAR algorithm is demonstrated for the near field subsurface microwave imaging of various metallic and dielectric targets with subwavelength spatial resolution in free space and lossy media.

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“…The superstructure can be realized in the form of uniform 2D dielectric slabs, single or multiple 2D frequency selective surfaces (FSS), single or multiple partially reflective surfaces (PRS), or metasurface . These superstructures are then used to design single or multiband FPCAs with linear, dual‐linear or circular polarization, having boresight, tilted or reconfigurable main beam depending on the particular application.…”

Section: Introductionmentioning

confidence: 99%

Dual‐polarized low sidelobe Fabry‐Perot antenna using tapered partially reflective surface

Niaz

Yin

Zheng

et al. 2019

Int J RF Microw Comput Aided Eng

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A novel dual-polarized Fabry-Perot (FP) cavity antenna with low sidelobes is proposed. Low sidelobes are obtained by using a tapered partially reflective surface (PRS) in the form of circular lattice instead of the conventional rectangular lattice. As the PRS can be regarded as a 2D leaky wave surface on which cylindrical waves propagate outward radially in the form of concentric rings, so arranging the PRS elements in the form of circular lattice and then applying tapering on it yields low sidelobes in both the E-and H-planes. The performance of the proposed PRS is validated by fabricating a dual-polarized FP antenna and measuring its radiation patterns. Peak realized gains of 18.6 and 18.5 dBi are obtained for horizontal and vertical polarizations respectively, giving an aperture efficiency of around 42%. Measured sidelobe levels are reduced to lower than −21.3 dB in both the E-and H-planes for the two orthogonal polarizations. K E Y W O R D S2D leaky-wave antenna, dual-polarized antenna, Fabry-Perot (FP) cavity antenna, low sidelobe PRS antenna, partially reflective surface (PRS)

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A beam scanning Fabry–Pérot cavity antenna for millimeter‐wave applications

Cited by 6 publications

References 13 publications

A dual‐polarized wideband gain enhancement Fabry–Perot antenna by adopting a wedge‐shaped phase correcting structure

A dual‐polarized wideband gain enhancement Fabry–Perot antenna by adopting a wedge‐shaped phase correcting structure

Near field microwave subsurface imaging using metasurface loaded planar antenna and synthetic aperture radar (SAR) technique

Dual‐polarized low sidelobe Fabry‐Perot antenna using tapered partially reflective surface

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