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Diversity Glass Antennas for Tri-Band WiFi Applications Article

Peng Fei Hu, Kwok Wa Leung, Kwai Man Luk, Yong Mei Pan, Shao Yong Zheng

Engineering 2023, Volume 23, Issue 4, Pages 157-169 doi: 10.1016/j.eng.2022.09.011

Abstract: 0.0001pt">This paper investigates two novel polarization- and pattern-diversity glass dielectric resonator antennasAll three of the new diversity antennas were fabricated and measured to verify the simulations.In our experiment, the bit error rate (BER) of the three diversity glass antennas and the reference space-diversity

Keywords： WiFi Diversity antennas Multi-frequency Glass Dielectric resonator antennas Multiple-input multiple-output

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The μ Robust Control Design for Mobile Satellite Antennas

Li Guo,Hu Jianfei,Ji Xianzheng

Strategic Study of CAE 2007, Volume 9, Issue 5, Pages 22-26

Abstract: investigates the use of the μ robust controller for improving control performance of mobile satellite antennasA robust control system of mobile satellite antennas is presented, and the μ robust controlleris designed according to the mobile satellite antennas systems model. It is clarified that the control performance of mobile satellite antennas is improved and the control

Keywords： mobile satellite antennas theμdesign robust control

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Wide-Angle Scanning Antennas for Millimeter-Wave 5G Applications Article

Raj Mittra, Abdelkhalek Nasri, Ravi Kumar Arya

Engineering 2022, Volume 11, Issue 4, Pages 60-73 doi: 10.1016/j.eng.2021.10.017

Abstract: using a reconfigurable metasurface type of panels.Graphical abstractA number of designs for scanning antennas

Keywords： Luneburg lens Scanning arrays Millimeter-wave antennas Switchable phase shifters Reconfigurable metasurfaces

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Advanced Antennas Push Forward Wireless Connectivity

Kwai Man Luk, Baoyan Duan

Engineering 2022, Volume 11, Issue 4, Pages 1-2 doi: 10.1016/j.eng.2022.03.003

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Filtering antennas: from innovative concepts to industrial applications Review Articles

Yun-fei CAO, Yao ZHANG, Xiu-yin ZHANG

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1, Pages 116-127 doi: 10.1631/FITEE.1900474

Abstract: The filtering antenna designs include single- and dual-polarized filtering patch antennas, a single-polarizedThe filtering antennas in this paper feature an innovative concept of eliminating extra filtering circuits, unlike other available antennas.Based on the proposed filtering antennas, single- and dual-polarized dual-band antenna arrays were developed

Keywords： Filtering antenna Dual-band Antenna array

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Designing Space-time Trellis Codes in Flat Fast Fading Channels With Large Number of Antennas

Geng Jia,Cao Xiuying,Bi Guangguo

Strategic Study of CAE 2006, Volume 8, Issue 6, Pages 48-54

Abstract: In flat fast fading channels, when the number of antennas is large, the space-time trellis codes design

Keywords： space-time trellis code criterion flat fast fading distance distribution

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Extended Hemispherical Lens and Its Applications in Millimeter Wave Focal Imaging Systems

Sun Zhongliang,Dou Wenbin

Strategic Study of CAE 2000, Volume 2, Issue 3, Pages 42-47

Abstract:

Recently millimeter wave imaging absorbs many attentions. Especially much research work has been done on the millimeter focal imaging because of its advantage of real time imaging. This paper analyzes extended hemispherical lens, which can be used in focal imaging. An integrated antenna array is placed at the back plane of the lens to receive the power focused by the lens. This structure can eliminate the effect of the surface wave exited in the thick dielectric substrates at millimeter wave wavelengths. Low loss and compact are its merit. Assuming an electromagnetic wave is incident on the lens surface, the field distribution in focal space of the lens is analyzed by using Stratton-Chu formula and ray tracing method. It will provide much information about the imaging performance of the lens. Experiments have been carried out for two types of incident waves, one is normally incident plane wave and another is Gaussian-beam. Good agreement has been found between experiments and calculation results. The lens antenna also can be used to eliminate the transition between paraboloidal antenna and integrated front-end in conventional integrated millimeter wave systems so that the system loss can be decreased and performance can be improved. Furthermore, the lens can be used to couple with a quasi-optical system. The results presented here will provide useful guidelines for the above mentioned applications.

Keywords： millimeter waves antennas imaging extended hemispherical lens

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Recent Advances in Organ Specific Wireless Bioelectronic Devices: Perspective on Biotelemetry and Power Transfer Using Antenna Systems Review

Ahsan Noor Khan, Young-ok Cha, Henry Giddens, Yang Hao

Engineering 2022, Volume 11, Issue 4, Pages 27-41 doi: 10.1016/j.eng.2021.10.019

Abstract: Major highlights include seminal components that mediate the overall wireless operation, such antennasMoreover, the constituting materials of antennas, operational frequency and their integration with otherThe main emphasis is on delineating the key features of antennas, namely their radiation characteristics

Keywords： Bioelectronics Neural implants Drug delivery Antennas Wireless power

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Recent Advances in Space-Deployable Structures in China

Xiaofei Ma, Tuanjie Li, Jingya Ma, Zhiyi Wang, Chuang Shi, Shikun Zheng, Qifeng Cui, Xiao Li, Fan Liu, Hongwei Guo, Liwu Liu, Zuowei Wang, Yang Li

Engineering 2022, Volume 17, Issue 10, Pages 207-219 doi: 10.1016/j.eng.2022.04.013

Abstract: status and development trend of spacedeployable structures in China, including large space mesh antennasFinally, future technology developments and trends are elucidated in the fields of mesh antennas

Keywords： Deployable space structures Mesh antennas Solar arrays Deep-space exploration

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An array of two periodic leaky-wave antennas with sum and difference beam scanning for application in Research Article

Mianfeng HUANG, Juhua LIU,liujh33@mail.sysu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 4, Pages 567-581 doi: 10.1631/FITEE.2200473

Abstract: An array of two periodic leaky-wave s (LWAs) with scanning is proposed for application in . The array is composed of two periodic LWAs with different periods, in which each LWA generates a narrow beam through the =-1 space harmonic. Due to the two different periods for the two LWAs, two beams with two different directions can be realized, which can be combined into a sum beam when the array is fed in phase or into a difference beam when the array is fed 180° out of phase. The array integrated with 180° hybrid is designed, fabricated, and measured. Measurement results show that the sum beam can reach a gain up to 15.9 dBi and scan from -33.4° to 20.8°. In the scanning range, the direction of the null in the difference beam is consistent with the direction of the sum beam, with the lowest null depth of -40.8 dB. With the excellent performance, the provides an alternative solution with low complexity and low cost for .

Keywords： Antenna Leaky-wave antenna (LWA) Substrate-integrated waveguide (SIW) Sum and difference beam Target detection and tracking