A Dual-Polarized Pattern Reconfigurable Yagi Patch Antenna for Microbase Stations

Deng, Wan-Qiang; Yang, Xuesong; Shen, Cong-Song; Zhao, Junfeng; Wang, Bing‐Zhong

doi:10.1109/tap.2017.2741022

Cited by 74 publications

(35 citation statements)

References 17 publications

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“…Thus, reconfigurable antennas can meet additional requirements of various modern wireless systems. Generally, reconfigurable antennas are classified as frequency [1], [2], polarization [3], [4] pattern [5]- [10], and hybrid reconfigurable antennas [11], [13].…”

Section: Introductionmentioning

confidence: 99%

“…However, its structure is so complex that it is not suitable for reconfigurable arrays. In [10], and [11], two patch antennas are also designed by the principle of switchable directors with simple structure, but the bandwidth of 5.6% and 1.7% is not appropriate for investigation systems. Therefore, pattern reconfigurable antenna arrays with wideband performance are needed.…”

Section: Introductionmentioning

confidence: 99%

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Wideband Pattern Reconfigurable Printed-Yagi Antenna Array Based on Feed Structure

Sun

Zhang

Feng

2019

J. Microw. Optoelectron. Electromagn. Appl.

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A pattern reconfigurable antenna array with two elements is designed in this paper. The antenna element is made up of a printed Yagi and feed structure with variable phase. By changing the states of diodes in the feed structure of these two elements, the far-field radiation phase of both elements can be changed. That is, the pattern reconfigurable function of the array is realized. In this way, the impedance bandwidth of array is 75.9% (2.7~6.0 GHz), in which the peak gain direction can be switched between-θ, 0 and +θ (θ = 10°~16° at different frequencies). With the simple reconfigurable structure, the peak gain direction can be adjusted according to demands. It can be applied to broadband investigation systems. To verify the feasibility, a prototype is fabricated, measured, and reasonable agreement between the simulated and measured results is obtained.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wideband Pattern Reconfigurable Printed-Yagi Antenna Array Based on Feed Structure

Sun

Zhang

Feng

2019

J. Microw. Optoelectron. Electromagn. Appl.

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“…Especially, the pattern reconfigurable antenna is a popular research direction in reconfigurable antennas. Generally, reconfigurable patterns include three beam forms: broadside and conical switchable beams [1][2][3], azimuth switchable beams [4][5][6] and elevation switchable beams [7][8][9][10]. In this paper, reconfigurable antennas of switchable beams in elevation are discussed, compared and designed.…”

Section: Introductionmentioning

confidence: 99%

“…However, its structure is so complex that it is not suitable for forming an array. In [8,9], two microstrip antennas are designed by switchable directors with a simple structure, but the impedance bandwidth of 5.6% and 1.7% is not appropriate for wideband systems. In [10], various far-field phases are realized by loading varactors and branches to achieve a continuous beam-steerable radiation pattern covering scanning during angles from −23 • to +23 • across broadside.…”

Section: Introductionmentioning

confidence: 99%

A Phase Diversity Printed-Dipole Antenna Element for Patterns Selectivity Array Application

Sun¹,

Zhang²,

Feng³

2018

PIER Letters

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A phase diversity printed-dipole antenna element for patterns selectivity array application is designed in this paper. The antenna element consists of a printed dipole structure and two varactors. By changing the control voltage of each element, various radiation phases in the far field of each element is realized, that is, the peak gain direction of the array is changed. With this method, the structure designed is simple, and only two varactors are loaded. To verify the feasibility, an antenna prototype is experimentally characterized, which validates the proposed concept. The impedance bandwidth of array is 22.2% (3.2 ∼ 4.0 GHz), in which the peak gain direction can be scanned during angles from −θ to +θ across broadside (θ = 13 • ∼ 18 • at different frequencies). It can be applied to phased antenna system.

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“…These antennas offer high gain at the cost of using a large number of varactor diodes to tune the surface impedance. While several designs exist for beam steering, a few work has been carried out to perform beam steering and beamwidth variability simultaneously on a single antenna architecture [9], [36], [37].…”

mentioning

confidence: 99%

A Reconfigurable Antenna With Beam Steering and Beamwidth Variability for Wireless Communications

Towfiq

Bahçeci

Blanch

et al. 2018

IEEE Trans. Antennas Propagat.

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Abstract-A reconfigurable antenna (RA) capable of steering its beam into the hemisphere corresponding too }, and of changing 3-dB beamwidth, whereo } for broadside direction is presented. The RA operating in 5 GHz band consists of a driven patch antenna with a parasitic layer placed above it. The upper surface of the parasitic layer has two pixelated metallic strips, where each strip has four pixels. The pixels connected via PIN diode switches enable to change the current distribution on the antenna providing the desired modes of operation. A prototype RA was characterized indicating an average gain of 8 dB. Measured and simulated impedance and radiation patterns agreed well. The proposed RA offers an efficient solution by using less number of switches compared to other RAs. The system level simulations for a 5G orthogonal frequency division multiple access system show that the RA improves capacity/coverage trade-off significantly, where the RA modes and users are jointly determined to create proper beamwidth and directivity at the access point antennas. For a hotspot scenario, the presented RA provided 29% coverage and 16% capacity gain concurrently.

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A Dual-Polarized Pattern Reconfigurable Yagi Patch Antenna for Microbase Stations

Cited by 74 publications

References 17 publications

Wideband Pattern Reconfigurable Printed-Yagi Antenna Array Based on Feed Structure

Wideband Pattern Reconfigurable Printed-Yagi Antenna Array Based on Feed Structure

A Phase Diversity Printed-Dipole Antenna Element for Patterns Selectivity Array Application

A Reconfigurable Antenna With Beam Steering and Beamwidth Variability for Wireless Communications

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