A Beam-Steering Reconfigurable Antenna for WLAN Applications

Li, Zhouyuan; Ahmed, E.; Eltawil, Ahmed M.; Cetiner, Bedri A.

doi:10.1109/tap.2014.2367500

Cited by 106 publications

(68 citation statements)

References 19 publications

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“…The experiments and their outcomes are also described in Section IV. In contrast to the extensive set of electrically large reconfigurable systems mentioned previously [12][13][14][15][16][17][18][19][20], the measured results confirm the efficacy of this electrically small, reconfigurable antenna.The experimental results are compared to their simulated values; they are in good agreement. In particular, they verify that the prototype exhibits reconfigurability that covers the entire azimuth plane at a fixed frequency point, 1.564 GHz, with only three states.…”

supporting

confidence: 58%

“…In particular, pattern-reconfigurable antennas have many known admirable capabilities, including dynamic beam-switching, direction-finding, null scanning, and incoming interferenceavoiding. They have been extensively investigated for civil and military applications [12,13]. While there have been many types of pattern-reconfigurable antennas developed in recent years, e.g., dielectric resonator antennas [14], graphene-metal loop antennas [15], Yagi-Uda antennas [16][17][18], microstrip stacked array antennas [19], and implantable antennas [20], there have been very few electrically small designs reported.…”

mentioning

confidence: 99%

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Low-Profile, Electrically Small, Huygens Source Antenna With Pattern-Reconfigurability That Covers the Entire Azimuthal Plane

Tang

Zhou²,

Ziolkowski

2017

IEEE Trans. Antennas Propagat.

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Abstract -A pattern-reconfigurable, low-profile, efficient, electrically small, near-field resonant parasitic (NFRP), Huygens source antenna is presented. The design incorporates both electric and magnetic NFRP elements. The electric ones are made reconfigurable by the inclusion of a set of p-i-n diodes. By arranging these electric and magnetic NFRP elements properly, a set of three Huygens sources are attained, each covering a 120 sector. Pattern reconfigurability is obtained by switching the diodes on or off; it encompasses the entire 360 azimuth range. A prototype was fabricated and tested. The numerical and experimental studies are in good agreement. The experimental results indicate that in each of its instantaneous states at f 0 = 1.564 GHz, the antenna provides uniform peak realized gains, front-to-back ratios, and radiation efficiencies, respectively, as high as 3.55 dBi, 17.5 dB, and 84.9%, even though it is electrically small: ka = 0.92, and low profile: 0.05 λ 0 .Index Terms -Electrically small antennas, Huygens source antennas, low profile antennas, near-field resonant parasitic elements, pattern-reconfigurable antennas I. INTRODUCTION he accelerated demands on wireless technologies have driven hardware to be more compact, integrated, portable, and lower cost while nevertheless promising better, smarter and more multifunctional performance characteristics. They have spawned the development of a plethora of high-performance electrically small antennas (ESAs) to satisfy the requirements in Manuscript received on Aug. 05, 2016; revised on Nov. 30, 2016; and accepted on Dec. 18, 2016. This work was supported in part by the National Natural [5]; metal-mountable radio-frequency-identification (RFID) tag antennas [6]; folded helix/planar meander-line antennas [7]; self-excited electromagnetic bandgap (EBG) resonator antennas [8]; and near-field resonant parasitic (NFRP) antennas [9]. Unfortunately, because their radiation characteristics are not reconfigurable, many of these ESAs cannot individually meet system requirements that cope with changing scenarios.An effective, low-cost, and space-saving solution to these issues has been reconfigurable technologies. Reconfigurability empowers many desirable properties such as tunable operating frequencies, radiation patterns, and polarization states. It is an excellent alternative to the common solution, i.e., utilizing several fixed antennas to meet the requirements [10,11]. In particular, pattern-reconfigurable antennas have many known admirable capabilities, including dynamic beam-switching, direction-finding, null scanning, and incoming interferenceavoiding. They have been extensively investigated for civil and military applications [12,13]. While there have been many types of pattern-reconfigurable antennas developed in recent years, e.g., dielectric resonator antennas [14], graphene-metal loop antennas [15], Yagi-Uda antennas [16][17][18], microstrip stacked array antennas [19], and implantable antennas [20], there have been very few electrically smal...

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supporting

confidence: 58%

mentioning

confidence: 99%

Low-Profile, Electrically Small, Huygens Source Antenna With Pattern-Reconfigurability That Covers the Entire Azimuthal Plane

Tang

Zhou²,

Ziolkowski

2017

IEEE Trans. Antennas Propagat.

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“…In [9], pattern reconfigurability is realized by incorporating four PIN diodes and two parasitic elements. In [10], the adjacent pixels are connected by PIN diodes to change the surface current, thus providing reconfigurability in the beamsteering direction.…”

Section: Introductionmentioning

confidence: 99%

Design of Frequency- and Pattern-Reconfigurable Wideband Slot Antenna

Han

Wang

Zhang

et al. 2018

International Journal of Antennas and Propagation

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A wideband slot antenna with frequency-and pattern-reconfigurable characteristics for TD-LTE (3.4-3.8 GHz) and C-band (3.7-4.2 GHz) applications is proposed. The antenna consists of two symmetric slots that are fed by a fork-shaped microstrip line. Two PIN diodes are loaded in the slots to produce two different frequency bands. Meanwhile, two additional PIN diodes are inserted in the feed line to achieve the pattern reconfigurability. The wideband operation is realized by using the symmetric slots and fork-shaped feed line. Simulated and measured results show that the antenna provides 25°and 20°beam-steering in 3.4-3.8 and 3.7-4.2 GHz bands, respectively. Also, an impedance bandwidth of at least 12.8% is obtained in the operating bands.

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“…Many pattern reconfigurable antennas have been reported in literature [5][6][7][8][9][10][11][12][13][14][15][16], such as a corner reflector antenna for single band [6], dual-band [7,8] and compact structures that can provide different directional radiation patterns using electronic switches for single band [9][10][11][12], wideband characteristics [13,14]. A pattern reconfigurable antenna that has multiband characteristic in WLAN and WiMAX bands can improve the whole system performance.…”

Section: Introductionmentioning

confidence: 99%

“…In [15], a dielectric resonator antenna is designed for only two frequencies of 3.5 and 5.2 GHz. However, no such pattern reconfigurable antennas [5][6][7][8][9][10][11][12][13][14][15][16] have been implemented, which cover all the WLAN and WiMAX bands.…”

Section: Introductionmentioning

confidence: 99%

A Pattern Reconfigurable Antenna for Wlan and Wimax Systems

Koley¹,

Murmu²,

Pal³

2016

PIER C

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Abstract-A novel tri-band pattern reconfigurable planar antenna is proposed. Tri-band is achieved by inserting a bandstop filter at the feed line of a wideband monopole antenna with complementary split ring resonator (CSRR) on a circular patch. Two parasitic arc-shaped stubs are in the back side of the radiator that works as a reflector. The antenna radiation pattern is switched from omnidirectional to one of two different directional modes by activating one of the stubs. Three different radiation modes are controlled by four ideal switches. Radiation pattern reconfigurability makes it suitable for the use of flexible cognitive radio front-end system. The proposed antenna is suitable for WLAN 2.4/5.2/5.8 GHz and WiMAX 3.5/5.5 GHz applications. Good agreement between simulated and measured results validates its possible application.

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A Beam-Steering Reconfigurable Antenna for WLAN Applications

Abstract: Index Terms-Beam-steering, reconfigurable antenna, full-wave analysis, signal to noise ratio.

Cited by 106 publications

References 19 publications

Low-Profile, Electrically Small, Huygens Source Antenna With Pattern-Reconfigurability That Covers the Entire Azimuthal Plane

Low-Profile, Electrically Small, Huygens Source Antenna With Pattern-Reconfigurability That Covers the Entire Azimuthal Plane

Design of Frequency- and Pattern-Reconfigurable Wideband Slot Antenna

A Pattern Reconfigurable Antenna for Wlan and Wimax Systems

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