A Wide-Angle Scanning and Low Sidelobe Level Microstrip Phased Array Based on Genetic Algorithm Optimization

Wen, Ya-Qing; Wang, Bing‐Zhong; Ding, Xiao

doi:10.1109/tap.2015.2507173

Cited by 65 publications

(26 citation statements)

References 12 publications

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“…The array measured in an anechoic chamber and the measurement system for the scanning radiation patterns is set up by using coaxial cables, six-bit digital phase shifters, power dividers, and a computer. The measurement system is the same as the one in [21]. indicates that the elements obtain excellent impedance matching in the wide-angle scanning at both E-plane and H-plane.…”

Section: Scanning Pattern Results and Analysismentioning

confidence: 99%

Step-Shaped Cavity-Backed Antenna and Wideband Wide-Angle Impedance Matching in Planar Phased Array

Wen¹,

Gao²,

Chen³

2020

PIER C

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An improved wideband cavity-backed antenna and a planar phased array with wideband wide-angle impedance matching (WAIM) are provided in this paper. A step-shaped cavity is applied in the antenna, so the relative bandwidth of VSWR < 2 can be improved to more than 52% without increasing the cavity profile. Furthermore, a planar phased array constructed by the cavity-backed antenna can work with a wide-angle scanning range of ±60 • at both Eand H-planes. Due to the wideangle scanning range, the impedance matching for the phased array will be unstable in the required wideband. Consequently, the matching layer with metamaterials has been loaded on the phased array. The VSWR is controlled within 2 in E-plane and 3.5 in H-plane during the scanning range of ±60 • in wide bandwidth.

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Section: Scanning Pattern Results and Analysismentioning

confidence: 99%

Step-Shaped Cavity-Backed Antenna and Wideband Wide-Angle Impedance Matching in Planar Phased Array

Wen¹,

Gao²,

Chen³

2020

PIER C

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“…It is important to for a phased array to have stable polarization. In the linear phased array, normally vertically polarized radiation pattern is applied [8]- [11]. Endfire lobes can be generated by vertically polarized radiation pattern with an infinite ground.…”

Section: Introductionmentioning

confidence: 99%

“…Endfire lobes can be generated by vertically polarized radiation pattern with an infinite ground. It is helpful for the wide-angle scanning and phased array with angle scan range over ±77° at the elevation plane was reported in [11]. Dual-polarized antennas have been required for phased arrays to be applied to various applications such as mobile satellite communications, weather radars, and synthetic aperture radars [12], [13].…”

Section: Introductionmentioning

confidence: 99%

Dual-Polarized and Wide-Angle Scanning Microstrip Phased Array

Wen¹,

Gao

Wang³

et al. 2018

IEEE Trans. Antennas Propagat.

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In this paper, a novel microstrip phased array with dual-polarized and wide-angle scanning in the 2-dimensional (2D) space is proposed. The antenna element consists of a mushroom-shaped patch and two circular patches. Each circular patch is connected with one feeding port. The mushroomshaped patch is excited via capacitive coupling through the gaps between the mushroom-shaped patch and the circular patch. The zeroth-order resonance (ZOR) and TM010 mode resonance are simultaneously generated in the mushroom-shaped patch. The 3dB beamwidth of the antenna element in the 2D space is in the range between 110° and 125°. One 6×6 phased array based on the antenna element is designed, fabricated and measured. The phased array shows dual-polarized wide-angle beam scanning in a range of ±66° in both x-z and y-z planes.

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“…In order to retain the low profile, many methods have been presented to improve scanning performance and to eliminate scan blindness. If the limitation is ascribed to the beamwidth of radiating elements, the latest researches proposed several types of wide-beam antenna element to realize wide-angle scanning [4][5][6][7][8][9]. However, viewing this limitation as an impedance matching problem for conventional antenna elements, an early approach is to locate a thin, high-permittivity dielectric sheet at some distance above a waveguide array [10].…”

Section: Introductionmentioning

confidence: 99%

An Improvement Approach for Wide-Angle Impedance Matching Using ELC Metasurface Slabs for SIW Slot Array Antennas

Liu

Yang

Zeng

et al. 2018

International Journal of Antennas and Propagation

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The effects of mutual coupling in beam scanning arrays increase degradation in gain as the beam is scanned off the broadside. A simple and effective approach for a deployed SIW slot array antenna through the use of artificially structured materials is proposed to improve its performance of wide-angle scanning in the E-plane. Metasurface slabs of one-tenth wavelength electric-inductive-capacitive (ELC) resonators are vertically placed halfway between the adjacent waveguides without changing the antenna structure to realize wide-angle impedance matching (WAIM). The ELC metasurface is designed to operate at a linear region rather than at a resonance region to use its transmission property for greatly weakening mutual couplings. Inserting metasurface slabs between two adjacent waveguides to reduce the mutual coupling can achieve impedance matching at large scan angles. A 10 × 10 SIW slot array operating at X-band is modelled and simulated to study how the vertically placed ELC metasurface slabs over the antenna affect the array's beam scanning performance. The simulated results show that the scan range of the antenna is extended from −50°to 50°to −70°to 70°under the criteria that radiating efficiency is greater than 80%.

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A Wide-Angle Scanning and Low Sidelobe Level Microstrip Phased Array Based on Genetic Algorithm Optimization

Cited by 65 publications

References 12 publications

Step-Shaped Cavity-Backed Antenna and Wideband Wide-Angle Impedance Matching in Planar Phased Array

Step-Shaped Cavity-Backed Antenna and Wideband Wide-Angle Impedance Matching in Planar Phased Array

Dual-Polarized and Wide-Angle Scanning Microstrip Phased Array

An Improvement Approach for Wide-Angle Impedance Matching Using ELC Metasurface Slabs for SIW Slot Array Antennas

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