Cylindrical Slot FSS Configuration for Beam-Switching Applications

Liang, Bin; Sanz-Izquierdo, Benito; Parker, Edward A.; Batchelor, John C.

doi:10.1109/tap.2014.2367534

Cited by 60 publications

(25 citation statements)

References 19 publications

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“…The concept of switching the antenna main beam only in the azimuth plane has been demonstrated in [17], where a conventional monopole antenna is explored as the feed. To fulfill beam steering in the elevation plane, we propose a novel collinear feed array excited by progressive phase shifts between elements.…”

Section: -D Coverage Beam-scanning Mechanismmentioning

confidence: 99%

“…As elaborated in [17], incorporating p-i-n diodes into slottype FSS elements enables electronic switching of the FSS between reflective or transparent mode. An H-shaped AFSS unit cell based on a switchable slot is designed to operate at 2.45 GHz, as shown in Fig.…”

Section: B Afss Unit Cell Designmentioning

confidence: 99%

“…Note that the H-shaped slot can reduce the FSS array periodicity P x , enabling accommodation of more cells for a fixed cylinder perimeter. Compared with the dimension in [17], the diameter of the AFSS cylinder consisting of H-shaped unit cells can reduce by one effective wavelength size. The simulated transmission coefficients of the AFSS are shown in Fig.…”

Section: B Afss Unit Cell Designmentioning

confidence: 99%

“…It can be seen that the proposed antenna has the advantages of being able to achieve beam scanning in both the horizontal and elevation planes with a moderate gain. In addition, the dimensions of our antenna are smaller than the ones in [17] which also uses a slot-type active FSS cylinder.…”

Section: B Antenna Feed Array Designmentioning

confidence: 99%

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3-D Coverage Beam-Scanning Antenna Using Feed Array and Active Frequency-Selective Surface

Gao

Sanz-Izquierdo

et al. 2017

IEEE Trans. Antennas Propagat.

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This paper presents the design of a smart antenna that can achieve 3-D beam-scanning coverage. The antenna consists of a novel planar feed array and a cylindrical active frequency-selective surface (AFSS). First, an array fed metallic reflector is studied as a reference antenna to validate the beamscanning characteristics in the elevation plane. Then, the AFSS is assessed through simulation and measurement results. Finally, the complete structure containing the planar collinear array and the AFSS is analyzed. A prototype at S-band has been designed, manufactured, and measured. The resulting antenna is shown to be able to operate at the 2.4-2.5 GHz frequency band and switch beams in both the azimuth and elevation planes. In the azimuth plane, the proposed antenna is capable of sweeping beams toward different directions to cover a full range of 360°. In the elevation plane, it can achieve beam steering within an angle range of +16°/ − 15°. The measured maximum gain of the antenna is 9.2 dBi. This is the first report of a low-cost 3-D coverage beam-scanning antenna based on AFSS.

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Section: -D Coverage Beam-scanning Mechanismmentioning

confidence: 99%

Section: B Afss Unit Cell Designmentioning

confidence: 99%

Section: B Afss Unit Cell Designmentioning

confidence: 99%

Section: B Antenna Feed Array Designmentioning

confidence: 99%

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3-D Coverage Beam-Scanning Antenna Using Feed Array and Active Frequency-Selective Surface

Gao

Sanz-Izquierdo

et al. 2017

IEEE Trans. Antennas Propagat.

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“…Frequency selective surfaces (FSSs) have been widely studied over the past few decades, which were mainly focused on the design and characterization of new structures, active FSS, and curved or three-dimensional (3D) structures [1][2][3][4]. Traditionally, software simulation and numerical calculation methods were used to predict the transmission characteristics and design the corresponding array structure [5,6].…”

Section: Introductionmentioning

confidence: 99%

Design and Characterization of Periodically Conductive Woven Fabric

Guan

Yang

et al. 2019

Autex Research Journal

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In this paper, a novel kind of electromagnetic (EM) functional textiles is proposed, which show high-pass characteristics as they interact with EM waves. The periodically conductive woven fabric was designed, fabricated, and measured. Specifically, by means of unit cell model building and EM simulation, the theoretical S21 (transmission coefficient) and S11 (reflection coefficient) curves were obtained. A concrete sample was fabricated through weaving process, and its transmission characteristics were measured in the microwave anechoic chamber. The measured and simulated results were highly consistent, demonstrating the validity of design process. Compared with the aluminum foil paper sample, the S21 values of fabricated sample were a little smaller, and the reason could be attributed to yarn crimp and surface roughness. The EM characteristics of fabricated sample under two different polarization modes were slightly different, which was due to the beating-up tension of weaving process. The work could offer new research ideas, and the related products have potential advantages over rigid plates on the account of textile characteristics.

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Beam‐Reconfigurable Antennas Using Active Frequency Selective Surfaces

2019

Low‐cost Smart Antennas

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Cylindrical Slot FSS Configuration for Beam-Switching Applications

Cited by 60 publications

References 19 publications

3-D Coverage Beam-Scanning Antenna Using Feed Array and Active Frequency-Selective Surface

3-D Coverage Beam-Scanning Antenna Using Feed Array and Active Frequency-Selective Surface

Design and Characterization of Periodically Conductive Woven Fabric

Beam‐Reconfigurable Antennas Using Active Frequency Selective Surfaces

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