Wideband Pattern-Reconfigurable Antenna With Switchable Broadside and Conical Beams

Lin, Wei; Wong, Hang; Ziolkowski, Richard W.

doi:10.1109/lawp.2017.2738101

Cited by 160 publications

(82 citation statements)

References 18 publications

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“…This can be attributed to the ease of fabrication and lesser compact composition. Some antenna geometries have been reported with beam steering properties, patch antennas integrated with additional radiating elements 13,14 by means of radio frequency (RF) switches can attain beam tilt into two modes (α = 0 , 90 ) and (α = ±20) at the peak gain of 8.2 and 8.5 dBi, respectively. Furthermore, it can be limited to 23.5% and 6.4% of operating bandwidth, respectively.…”

Section: Introductionmentioning

confidence: 99%

Broadband cloverleaf Vivaldi antenna with beam tilt characteristics

Abijuru

Hamid

Seman

et al. 2020

Int J RF Microw Comput Aided Eng

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A miniature broadband Vivaldi antenna with beam tilt characteristics suitable for lower 5G bands is presented in this article. This study is rationalized by adding two symmetric taper slots rotated 90° from the original single slot planar tapered antenna and by means of positive‐intrinsic‐negative diode as the switching component. The extended design with a cloverleaf shape is developed using computer simulation technology microwave studio and fabricated by integrating active MA4AGP907 diodes. The experimental results are validated using PNA network analyzer and an echoic chamber. A wide operating bandwidth (S11 ≤ |−10| dB) from 2 to 5 GHz is exhibited during the simulation of antenna performance as well as during the experimental process. Furthermore, the proposed design achieved beam tilt in three different orientations with the maximum at ϕ equals 0°; 90° and 180° in the XY coordinates at the peak gain of 5.19 dBi. An additional feature of the proposed design is the directivity control when two or three modes are switched simultaneously. With this beam tilt ability, the antenna can be used in the development of fifth generation communication systems where multibeam and directive beam are required.

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Section: Introductionmentioning

confidence: 99%

Broadband cloverleaf Vivaldi antenna with beam tilt characteristics

Abijuru

Hamid

Seman

et al. 2020

Int J RF Microw Comput Aided Eng

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“…This antenna provides omnidirectional and directional radiation patterns in bent and unbent conditions, respectively. The researchers in Reference report a pattern reconfigurable antenna, by systematically integrating two circular patches of different size and feeding method to generate broadside and conical radiation patterns. However, the antenna size is larger due to its multilayer configuration.…”

Section: Introductionmentioning

confidence: 99%

Design of a 16‐beam pattern‐reconfigurable antenna for vehicular environment

Ashvanth¹,

Partibane²,

Alsath³

et al. 2020

Int J RF Microw Comput Aided Eng

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This article presents the design of a multipattern antenna with pattern switching for vehicular communications. The proposed antenna has four triangular patches integrated onto a split square ring (SR) resonator to operate at two distinct frequencies, viz. 2.4 and 3.5 GHz. The proposed antenna is designed with a view to enhancing the link reliability of Wireless Local Area Network (WLAN), WiMax, and vehicle to vehicle communication frequencies. Each triangular patch is separately excited using a microstrip line feed to enable beam steering. The ground plane of the antenna is embedded with two SR slots to improve the bandwidth and radiation performance. Further gain enhancement is achieved by loading the antenna with a plane reflector located at a distance of 20 mm from the antenna's ground surface. In reality, this reflector is realized using the vehicle's roof which provides gain enhancement up to 5.2 dBi at 2.4 GHz and 4 dBi at 3.5 GHz. By exciting single to multiple ports sequentially 16 different radiation patterns are obtained, which provides high‐gain omnidirectional coverage. The prototype antenna is fabricated and the simulation results are verified using experimental measurements. From the results, it is evident that the proposed antenna is suitable for vehicular communication applications.

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“…One way to achieve the dual radiation modes is to use reconfigurable antennas. Antennas, being able to switch between monopolar mode and patch mode, have been investigated . For example, a dual mode single band flexible textile antenna has been studied in Reference with two radiating structures: the ring for on body mode and the patch for off body mode.…”

Section: Introductionmentioning

confidence: 99%

“…For the on/off body communication systems, the antennas must have the capability of operating in dual radiation modes where one mode is used for on body applications, and the other for off body applications. A number of antennas have been proposed for WBAN systems, [1][2][3][4][5][6][7][8][9][10][11][12] but their overall performances still have room to improve.…”

Section: Introductionmentioning

confidence: 99%

“…Antennas, being able to switch between monopolar mode and patch mode, have been investigated. [1][2][3][4][5][6] For example, a dual mode single band flexible textile antenna has been studied in Reference 6 with two radiating structures: the ring for on body mode and the patch for off body mode. For most cases studied, the antennas need two separate feedings to excite the dual modes, which also involve diodes and switches that are costly and difficult to apply.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design of a dual band dual mode antenna for on/off body communications

Zhao

Geyi

2019

Micro & Optical Tech Letters

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A dual band dual mode patch antenna for on/off body communications is proposed in this letter. The antenna operates at 2.45 and 5.8 GHz with different radiation modes. The radiation pattern is omnidirectional at the lower frequency band while directional in the broadside at the higher frequency band. Through introducing a ground plane below the radiating patch, the influence of the human body on the performance of the proposed antenna is minimized and the specific absorption rate value is significantly reduced and is much lower than the standard limit value.

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Wideband Pattern-Reconfigurable Antenna With Switchable Broadside and Conical Beams

Cited by 160 publications

References 18 publications

Broadband cloverleaf Vivaldi antenna with beam tilt characteristics

Broadband cloverleaf Vivaldi antenna with beam tilt characteristics

Design of a 16‐beam pattern‐reconfigurable antenna for vehicular environment

Design of a dual band dual mode antenna for on/off body communications

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