Ultrawideband, Wide-Angle Scanning Array With Compact, Single-Layer Feeding Network

Hu, Chang-Hai; Wang, Bing‐Zhong; Ren, Wu; Xiao, Shaoqiu; Ding, Xiao

doi:10.1109/tap.2019.2955633

Cited by 36 publications

(14 citation statements)

References 27 publications

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“…The radiation patterns were measured in an anechoic chamber as shown in Figure 11B. Measured schemes are consistent with the proposed schemes 22 . The active elements were excited simultaneously while the others were terminated with 50 Ω loadings.…”

Section: Finite Array Fabrication and Measurementsupporting

confidence: 70%

An ultrawide‐angle scanning tightly coupled dipole array with double‐layer double‐sided frequency selective surface superstrate

Tong

Wang

Ren

2021

Int J RF Mic Comp-Aid Eng

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In this article, we present an ultrawide‐angle scanning tightly coupled dipole array (TCDA). The impedance match issue is a major challenge in the design of ultrawide‐angle scanning TCDA. To overcome this issue, we employ a multi‐stage wideband balun and design the balun synergistically with the dipole element to improve impedance match performance. A double‐layer double‐sided (DLDS) superstrate is exploited to further improve scanning performance in the H plane. The capacitance of the DLDS Frequency Selective Surface (FSS) superstrate is used to counteract the inductance at the upper face of the antenna array to improve impedance match at different scanning angles. The DLDS FSS superstrate has similar performance with the equivalent double‐layer dielectric superstrate, but with advantages of light weight, low cost, and low cross‐polarization level at high frequencies. Consequently, the proposed TCDA has a bandwidth of 2.4:1 (2.1–5 GHz) with VSWR<3, while scanning up to 80° in the E plane, 70° in the H plane, and 75° in the D plane, respectively. A 16 × 16 prototype was fabricated and measured, showing good agreement with the simulated results.

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Section: Finite Array Fabrication and Measurementsupporting

confidence: 70%

An ultrawide‐angle scanning tightly coupled dipole array with double‐layer double‐sided frequency selective surface superstrate

Tong

Wang

Ren

2021

Int J RF Mic Comp-Aid Eng

Self Cite

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“…While the use of the bulky dielectric superstrates would increase the weight and cost of the array. The printed FSS superstrates, which are much lighter, can be equivalent to dielectric blocks to achieve the same functionality [ 32 , 33 , 34 , 35 ]. Figure 5 b plots the unit cell of the proposed TCDA with equivalent dielectric superstrate (DS).…”

Section: Array Design and Simulationmentioning

confidence: 99%

“…The use of the bulky dielectric layer will surely increase the weight, cost and fabrication complexity for the total array, and may incur detrimental surface waves. In [ 32 , 33 , 34 , 35 , 36 ], a lightweight frequency selective surface (FSS) or a metasurface instead of the dielectric superstrate was used to improve wide-angle scanning. However, they still suffer from long multi-section feeding lines.…”

Section: Introductionmentioning

confidence: 99%

Ultrawideband, Wide Scanning Stripline-Fed Tightly Coupled Array Antenna Based on Parallel-Dipole Elements

Liang

Yin

Chen

et al. 2020

Sensors

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A stripline-fed tightly coupled array antenna with compact size, large scan volume and low cross-polarization characteristics is proposed for ultrawideband (UWB) applications. Simple impedance-matching process is realized by using parallel dual dipoles. Meanwhile, the parallel symmetrical radiating structures minimize the cross-polarization field components dramatically. The mitigation of various undesired resonances is studied in detail. An infinite array is designed to achieve 3:1 bandwidth (6−18 GHz) when scanning ±60∘ in the E-/D-planes (VSWR < 2.5) and H-plane (VSWR < 3.5). The cross-polarization levels remain below −29 dB at broadside. A 16 × 16 prototype is fabricated to demonstrate the design. The measured results are consistent well with the simulated ones. The overall size of the prototype at the lowest operating frequency is 3×3×0.4λ03 (15×15×2cm3). Due to its wide bandwidth, good electronic scan performance and compact size, the proposed antenna array is a good candidate for modern wireless platforms.

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“…Several phased array antennas have been developed to realize wide beam scanning capability, including the tightly coupled antennas, 8,9 parasitic radiator loaded antenna, 10 and pattern reconfigurable antenna. 11 The tightly coupled antenna can realize a wide beam scanning range with wide operating bandwidth, 12 but the active reflection coefficient deteriorates when the beam points to a large scanning angle. In addition, the coupling and the wide beamwidth also decrease the directivity of a tightly coupled antenna array.…”

Section: Introductionmentioning

confidence: 99%

Design of a pattern reconfigurable antenna for wide‐angle scanning phased array applications

Cao

Feng

Yan

2022

Micro & Optical Tech Letters

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In this article, a pattern reconfigurable antenna is proposed for wide beam scanning phased array applications. Different from the wide beamwidth unit design, the large beam scanning range of the proposed antenna array is realized by the reconfigurable radiation patterns with the different tilted angles of the antenna unit. The tilted beams can enhance the total beam coverage range of the antenna unit with high directivity, thus increasing the beam scanning range of the antenna array. The tilted beams are realized by the combination of the concentric circular and annular patch antennas. A PIN diode-loaded reconfigurable feeding network is designed to feed the patches with reconfigurable phase differences. The feeding network can achieve a good impedance matching effect and guarantee the symmetry of the tilted beams. To verify the beam scanning performance of the proposed antenna, a 1 × 4 linear array is fabricated and measured. The results prove that the antenna can achieve ±61°beam scanning range with ±78°3 dB beam coverage range and the maximum sidelobe level (SLL) of −8.0 dB. The characteristics include lowprofile, high efficiency, low SLL, and wide beam scanning range making it a very attractive choice for phased array antenna applications. K E Y W O R D S microstrip antenna, phased array antenna, reconfigurable antennaHow to cite this article: Cao Y, Feng P, Yan S. Design of a pattern reconfigurable antenna for wide-angle scanning phased array applications.

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Ultrawideband, Wide-Angle Scanning Array With Compact, Single-Layer Feeding Network

Cited by 36 publications

References 27 publications

An ultrawide‐angle scanning tightly coupled dipole array with double‐layer double‐sided frequency selective surface superstrate

An ultrawide‐angle scanning tightly coupled dipole array with double‐layer double‐sided frequency selective surface superstrate

Ultrawideband, Wide Scanning Stripline-Fed Tightly Coupled Array Antenna Based on Parallel-Dipole Elements

Design of a pattern reconfigurable antenna for wide‐angle scanning phased array applications

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