Electronically Pattern Reconfigurable Hexagon Shaped Loop Antenna

Pant, Arun; Kumar, Lalit; Parihar, Manoj Singh

doi:10.1109/i2ct.2018.8529520

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…The proposed antenna realizes frequency reconfigurability with the widest relative tuning range (25.6%). In addition, the proposed antenna also realizes pattern diversity: the omnidirectional radiation pattern and the broadside radiation pattern, which was not realized in [ 15 , 16 , 17 , 18 , 19 , 20 , 22 ]. Six varactors are used to reconfigure the antenna.…”

Section: Prototype Performancementioning

confidence: 99%

“…Continuous frequency tuning is not achieved. Some work proposed frequency and pattern reconfigurable antennas with continuous frequency tuning capability [ 15 , 16 , 17 , 18 , 19 , 20 ]. Liquid crystal technology was used to tune resonances [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

“…A frequency-reconfigurable antenna with two different patterns was proposed [ 21 ], but the two radiation patterns operate in different frequency bands. An antenna can switch its pattern between omnidirectional and end-fire patterns [ 20 ], but again, the frequency tuning range is very small. Pattern diversity was only achieved by combining two or more pattern reconfigurable antennas [ 16 , 22 ], which means these designs cannot be used as a MIMO antenna element to achieve pattern diversity.…”

Section: Introductionmentioning

confidence: 99%

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Metamaterial Inspired Varactor-Tuned Antenna with Frequency Reconfigurability and Pattern Diversity

Zhang,

Wang,

Yan

et al. 2024

Sensors

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A metamaterial-inspired varactor-tuned antenna with frequency reconfigurability and pattern diversity is designed. Two different versions of a reconfigurable structure are integrated into a single antenna to excite two different orthogonal patterns, which realizes pattern diversity for MIMO applications. The outer annular Composite Right-/Left-Handed Transmission Line (CRLH-TL) works at the 1 mode and provides a broadside pattern, and the inner circular radiator loaded with split ring resonators (SRR) operates at the 0 mode and radiates an omnidirectional pattern, which realizes pattern diversity. By using surface-mounted varactors, the operating frequencies for the two radiation patterns can be tuned over a wide frequency range, from 1.7 GHz to 2.2 GHz, covering the 1.71–2.17 GHz LTE band, and a low mutual coupling between the two radiators is achieved. The antenna has also been prototyped. The measured results are in good agreement with the simulation results, verifying the proposed concept. The dual-mode MIMO system equipped with the proposed antenna elements is discussed within the context of a 3-D channel model, and it shows a superior array compactness and spectral efficiency (SE) performance compared to scenarios with single-mode elements.

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