New requirements in communication technologies make it imperative to rehash conventional features such as reconfigurable antennas to adapt with the future adaptability advancements.This paper presents a comprehensive ...New requirements in communication technologies make it imperative to rehash conventional features such as reconfigurable antennas to adapt with the future adaptability advancements.This paper presents a comprehensive review of reconfigurable antennas,specifically in terms of radiation patterns for adaptation in the upcoming Fifth Generation(5G)New Radio frequency bands.They represent the key of antenna technology for materializing a high rate transmission,increased spectral and energy efficiency,reduced interference,and improved the beam steering and beam shaping,thereby land a great promise for planar antennas to boost the mid-band 5G.This review begins with an overview of the underlying principals in reconfiguring radiation patterns,followed by the presentations of the implemented innovative antenna topologies to suit particular advanced features.The various adaptation techniques of radiation pattern reconfigurable planar antennas and the understanding of its antenna design approaches has been investigated for its radiation pattern enhancement.A variety of design configurations have also been critically studied for their compatibilities to be operated in the midband communication systems.The review provides new insights on pattern reconfigurable antenna where such antennas are categorized as beam steering antenna and beamshaping antennas where the operation modes and purposes are clearly investigated.The review also revealed that for mid-band 5G communication,the commonly used electronic switching such as PIN diodes have sufficient isolation loss to provide the required beam performance.展开更多
This paper summarizes the achievement and progress in the research on reconfigurable antenna since 2001, in Computational Electromagnetics Laboratory （CEMLAB） at University of Electronic Science and Technology of Ch...This paper summarizes the achievement and progress in the research on reconfigurable antenna since 2001, in Computational Electromagnetics Laboratory （CEMLAB） at University of Electronic Science and Technology of China （UESTC）. Several typical reconfigurable antennas are introduced, which can realize frequency, pattern or frequency-pattern reconfigurability by electrically controlling methods. Some techniques involved in the design and analysis of reconfigurable antennas are reported. At last, the development trend of reconfigurable antenna is predicted in the conclusions.展开更多
This article presents a novel radiation pattern reconfigurable antenna with six beam choices, which works in 5.2 GHz wireless local area network （WLAN） frequency band. The designed antenna has good impedance matchin...This article presents a novel radiation pattern reconfigurable antenna with six beam choices, which works in 5.2 GHz wireless local area network （WLAN） frequency band. The designed antenna has good impedance matching at the resonant frequency. The beam can be reconfigured to six different directions, and each main lobe of six azimuth patterns has a half power beam width （HPBW） of about 60°. The antenna can cover all directions in the azimuth plane （XY-plane） by controlling the states （ON or OFF） of six switches. Simulation and measurement have been carried out to validate the design and experimental results demonstrate that the proposed antenna has the capacity to provide the pattern reconfigurability.展开更多
This paper presents an overview of the recent advances in reconfigurable antennas for wireless communications at University of Technology Sydney.In particular,it reports our latest progress in this research field,incl...This paper presents an overview of the recent advances in reconfigurable antennas for wireless communications at University of Technology Sydney.In particular,it reports our latest progress in this research field,including a multi-linear polarization reconfigurable antenna,a pattern reconfigurable antenna with multiple switchable beams,and a combined pattern and polarization reconfigurable antenna.展开更多
提出了一种新型频率可重构的手机天线,尺寸为43mm×9mm×3mm.该天线由曲折馈电枝节、耦合枝节,以及多路射频开关(RF-Switch)组成.通过RF-Switch接入不同的电感改变天线的感抗值和带线的有效电长度,在低频段得到了四种不同的工...提出了一种新型频率可重构的手机天线,尺寸为43mm×9mm×3mm.该天线由曲折馈电枝节、耦合枝节,以及多路射频开关(RF-Switch)组成.通过RF-Switch接入不同的电感改变天线的感抗值和带线的有效电长度,在低频段得到了四种不同的工作状态,天线的低频带宽显著增加.研究结果表明:所设计天线能够很好地覆盖长期演进(Long Term Evolution,LTE)、无线广域网(Wireless Wide Area Network,WWAN)八个频带且频段内回波损耗小于-6dB.实测表明天线具有良好的辐射效率和辐射增益,能够实现全向覆盖,具有很好的应用前景.展开更多
基金This work was supported by the Deanship of Scientific Research at Prince Sattam bin Abdulaziz University,Saudi Arabia.
文摘New requirements in communication technologies make it imperative to rehash conventional features such as reconfigurable antennas to adapt with the future adaptability advancements.This paper presents a comprehensive review of reconfigurable antennas,specifically in terms of radiation patterns for adaptation in the upcoming Fifth Generation(5G)New Radio frequency bands.They represent the key of antenna technology for materializing a high rate transmission,increased spectral and energy efficiency,reduced interference,and improved the beam steering and beam shaping,thereby land a great promise for planar antennas to boost the mid-band 5G.This review begins with an overview of the underlying principals in reconfiguring radiation patterns,followed by the presentations of the implemented innovative antenna topologies to suit particular advanced features.The various adaptation techniques of radiation pattern reconfigurable planar antennas and the understanding of its antenna design approaches has been investigated for its radiation pattern enhancement.A variety of design configurations have also been critically studied for their compatibilities to be operated in the midband communication systems.The review provides new insights on pattern reconfigurable antenna where such antennas are categorized as beam steering antenna and beamshaping antennas where the operation modes and purposes are clearly investigated.The review also revealed that for mid-band 5G communication,the commonly used electronic switching such as PIN diodes have sufficient isolation loss to provide the required beam performance.
文摘This paper summarizes the achievement and progress in the research on reconfigurable antenna since 2001, in Computational Electromagnetics Laboratory （CEMLAB） at University of Electronic Science and Technology of China （UESTC）. Several typical reconfigurable antennas are introduced, which can realize frequency, pattern or frequency-pattern reconfigurability by electrically controlling methods. Some techniques involved in the design and analysis of reconfigurable antennas are reported. At last, the development trend of reconfigurable antenna is predicted in the conclusions.
基金supported by the National Basic Research Program of China (2007CB310605)
文摘This article presents a novel radiation pattern reconfigurable antenna with six beam choices, which works in 5.2 GHz wireless local area network （WLAN） frequency band. The designed antenna has good impedance matching at the resonant frequency. The beam can be reconfigured to six different directions, and each main lobe of six azimuth patterns has a half power beam width （HPBW） of about 60°. The antenna can cover all directions in the azimuth plane （XY-plane） by controlling the states （ON or OFF） of six switches. Simulation and measurement have been carried out to validate the design and experimental results demonstrate that the proposed antenna has the capacity to provide the pattern reconfigurability.
文摘This paper presents an overview of the recent advances in reconfigurable antennas for wireless communications at University of Technology Sydney.In particular,it reports our latest progress in this research field,including a multi-linear polarization reconfigurable antenna,a pattern reconfigurable antenna with multiple switchable beams,and a combined pattern and polarization reconfigurable antenna.
文摘提出了一种新型频率可重构的手机天线,尺寸为43mm×9mm×3mm.该天线由曲折馈电枝节、耦合枝节,以及多路射频开关(RF-Switch)组成.通过RF-Switch接入不同的电感改变天线的感抗值和带线的有效电长度,在低频段得到了四种不同的工作状态,天线的低频带宽显著增加.研究结果表明:所设计天线能够很好地覆盖长期演进(Long Term Evolution,LTE)、无线广域网(Wireless Wide Area Network,WWAN)八个频带且频段内回波损耗小于-6dB.实测表明天线具有良好的辐射效率和辐射增益,能够实现全向覆盖,具有很好的应用前景.
