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Overview of Future Antenna Design for Mobile Terminals

Hanyang Wang

Engineering 2022, Volume 11, Issue 4,   Pages 12-14 doi: 10.1016/j.eng.2021.04.031

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Zero ground clearance dual antenna pair for metal-cased fifth-generation multiple input multiple output smartphone Correspondence

Le CHANG, Wenbao HE, Xiaomin CHEN, Xiaoxue TAN, Juan CHEN, Kai KANG, Yang YANG

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 10,   Pages 1562-1567 doi: 10.1631/FITEE.2200119

Abstract:

The fifth-generation (5G) era has already arrived and many applications are prospering. The multiple input multiple output (MIMO) system is the key to enhancing channel capacity for both the fourthgeneration (4G) wireless communication and 5G systems. For a smartphone, the most challenging task for antenna engineers is to accommodate the numerous 4G and 5G multi-port antennas while avoiding mutual coupling problems (Li Y et al., 2009, 2012; Hong, 2017; Sharawi et al., 2017). Therefore, implementing multiple antennas within a small space is a worthwhile topic to study, especially for antennas operating at the same frequency.

Keywords： 天线对；第五代移动通信技术（5G）；Sub-6 GHz；极化正交；智能终端；智能手机；零净空；全金属外壳；多输入多输出（MIMO）    

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A compact ultra-wideband crossed-dipole antenna for 2G/3G/4G/IMT/5G customer premise equipment applications Correspondences

Jingli GUO, Lun CUI, Ying LIU, Baohua SUN, Xiaofeng LI,guojl@xidian.edu.cn,ID_CLXX@163.com

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 2,   Pages 339-345 doi: 10.1631/FITEE.2000456

Abstract: A compact ultra-wideband crossed-dipole antenna is proposed for 2G/3G/4G/IMT/5G customer premise equipment (CPE) applications. The arms of the crossed-dipole antenna are formed by step-shaped patches, and a wideband operation can be realized by properly selecting the order of the step-shaped patches; its bandwidth can be further enhanced by extending the end of crossed dipole downward. Each dipole is excited by a microstrip stub that is directly connected to a coaxial cable. Furthermore, a slotted rectangular parasitic patch is added beneath the crossed dipoles to further support a 5G sub-6-GHz band without additional space cost. The test results for the prototype of the proposed antenna show that the crossed-dipole antenna has a bandwidth of 147.3% (0.77–5.07 GHz) for return loss lower than 10 dB and an isolation higher than 20 dB between two ports.

Keywords： 5G；交叉振子；双极化天线；终端天线；超宽带    

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A Polarization Programmable Antenna Array Article

Dingzhao Chen, Yanhui Liu, Ming Li, Pan Guo, Zhuo Zeng, Jun Hu, Y. Jay Guo

Engineering 2022, Volume 16, Issue 9,   Pages 100-114 doi: 10.1016/j.eng.2022.03.015

Abstract:

Reconfigurable antennas are becoming a major antenna technology for future wireless communications and sensing systems. It is known that, with a single linear polarization (LP) reconfigurable antenna element, a preferred polarization can be produced from a set of multiple polarization states, thus improving the quality of the communication link. This paper presents a new concept of a polarization programmable reconfigurable antenna array that consists of a number of polarization reconfigurable antenna elements with a finite number of possible polarization states. By employing a new optimization strategy and programming the polarization states of all the array elements, we demonstrate that it is possible to realize any desired LP in the vectorial array radiation pattern with accurate control of sidelobe and crosspolarization levels (XPLs), thereby achieving the desired polarization to perfectly match that of the required communications signal. Both numerical and experimental results are provided to prove the concept, and they agree well with each other.

Keywords： 阵列天线     极化可编程天线     可重构天线    

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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: A filtering antenna is a device with both filtering and radiating capabilities. It can be used to reduce the cross-band mutual coupling between the closely spaced elements operating at different frequency bands. We review the authors’ work on filtering antenna designs and three related dual-band base-station antenna arrays as application examples. The filtering antenna designs include single- and dual-polarized filtering patch antennas, a single-polarized omni-directional filtering dipole antenna, and a dual-polarized filtering dipole antenna for the base station. The filtering antennas in this paper feature an innovative concept of eliminating extra filtering circuits, unlike other available antennas. For each design, the filtering structure is finely integrated with the radiators or feeding lines. As a result, the proposed designs have the advantages of compact size, simple structure, good in-band radiation performance, and low levels of loss, and do not contain complicated filtering circuits. Based on the proposed filtering antennas, single- and dual-polarized dual-band antenna arrays were developed. Separate antenna elements at different frequency bands were used to achieve the dual-band performance. The cross-band mutual couplings between the elements at different bands were reduced substantially using the antenna inherent filtering performance. The dual-band arrays exhibited better performance as compared to typical industrial products. Some of the proposed technologies have been transferred into the industry.

Keywords： Filtering antenna     Dual-band     Antenna array    

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Antenna-in-package system integrated with meander line antenna based on LTCCtechnology

Gang DONG,Wei XIONG,Zhao-yao WU,Yin-tang YANG

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 1,   Pages 67-73

Abstract:

We present an antenna-in-package system integrated with a meander line antenna based on low temperature co-fired ceramic (LTCC) technology. The proposed system employs a meander line patch antenna, a packaging layer, and a laminated multi-chip module (MCM) for integration of integrated circuit (IC) bare chips.A microstrip feed line is used to reduce the interaction between patch and package. To decrease electromagnetic coupling, a via hole structure is designed and analyzed. The meander line antenna achieved a bandwidth of 220 MHz with the center frequency at 2.4 GHz, a maximum gain of 2.2 dB, and a radiation efficiency about 90% over its operational frequency. The whole system, with a small size of 20.2 mm×6.1 mm×2.6 mm, can be easily realized by a standard LTCC process. This antenna-in-package system integrated with a meander line antenna was fabricated and the experimental results agreed with simulations well.

Keywords： Antenna-in-package (AiP)     Meander line antenna     Multi-chip module (MCM)     Low temperature co-fired ceramic (LTCC)    

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A novel wideband ring antenna for polarization/pattern diversity Correspondence

Li SUN, Shigang ZHOU, Guanxi ZHANG, Baohua SUN

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 6,   Pages 975-983 doi: 10.1631/FITEE.2100421

Abstract:

We present a novel wideband ring antenna for polarization/pattern diversity. The proposed antenna consists of eight printed dipole elements in the form of a circular array. The arms of adjacent elements overlap for capacitive loading. Unlike traditional circular arrays, a method of exciting elements in the form of every two intervals is first introduced. We prove that this method can maintain the wideband characteristics of the antenna. Four independent feeding ports in a ring antenna aperture are designed for the polarization/pattern diversity with suitable feeding networks. As an example, a wideband dual-polarized antenna was designed based on the proposed ring antenna. To achieve two orthogonal linear polarizations with maximum radiation in the direction, two adjacent elements are extracted periodically to feed through one port. The differential feeding network and integrated Baluns have been designed to realize broadside radiation patterns, considering impedance and phase matching. Because the proposed antenna is hollow, it is a good candidate for a multiband sharing aperture antenna element. Results show that the proposed antenna has an overlapped bandwidth of 50.5% (1.04–1.82 GHz) with voltage standing wave ratio (VSWR)<2 for the two polarizations, and port isolation less than 23 dB. The measured realized gain ranges from 6.1 to 8.1 dBi, with stable broadside radiation patterns over the operating frequency band.

Keywords： 环形天线；宽带天线；极化分集；方向图分集    

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MIMO handset antenna for 5G/WLAN applications Correspondences

Yong CHENG, Jing LU, Bing-qing SHENG

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1,   Pages 182-187 doi: 10.1631/FITEE.1900478

Abstract: We propose a dual-module multiple-input multiple-output (MIMO) antenna for portable terminals. The operating bands of the handheld terminal antenna are 5G (3.4–3.8 GHz) and WLAN (5.150–5.925 GHz). Antenna elements of 5G and WLAN are spaced to reduce coupling between antenna elements in the same module. The return loss of all antenna elements is larger than 6 dB. The isolation between all elements is larger than 14 dB. The radiation efficiency of the high-frequency antenna is greater than 50%, and the radiation efficiency of the low-frequency antenna is greater than 40%. The far-field gain of all elements is greater than 2.2 dBi.

Keywords： Fifth-generation (5G)     Handset antenna     Multiple-input multiple-output (MIMO) antenna     Decouple    

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The Development Trent of Advanced Communication Technology

Bi Houjie

Strategic Study of CAE 2000, Volume 2, Issue 8,   Pages 31-34

Abstract:

In this paper, the development trend of advanced communication network terminals is summarized and analyzed. It is instructive to point out that industrialization of communication software and development of the EDA technology must be strengthened in order to meet the challenge of entering WTO.

Keywords： telecommunication network     grouping     multimedium     mobility     communication terminal    

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Antenna-in-package system integrated with meander line antenna based on LTCC technology

Gang Dong, Wei Xiong, Zhao-yao Wu, Yin-tang Yang,gdong@mail.xidian.edu.cn

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 1,   Pages 67-73 doi: 10.1631/FITEE.1500167

Abstract: We present an antenna-in-package system integrated with a based on technology. The proposed system employs a meander line patch antenna, a packaging layer, and a laminated for integration of integrated circuit (IC) bare chips. A microstrip feed line is used to reduce the interaction between patch and package. To decrease electromagnetic coupling, a via hole structure is designed and analyzed. The achieved a bandwidth of 220 MHz with the center frequency at 2.4 GHz, a maximum gain of 2.2 dB, and a radiation efficiency about 90% over its operational frequency. The whole system, with a small size of 20.2 mm×6.1 mm×2.6 mm, can be easily realized by a standard LTCC process. This antenna-in-package system integrated with a was fabricated and the experimental results agreed with simulations well.

Keywords： Antenna-in-package (AiP)     Meander line antenna     Multi-chip module (MCM)     Low temperature co-fired ceramic (LTCC)    

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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:

This paper investigates two novel polarization- and pattern-diversity glass dielectric resonator antennas (DRAs), both of which are for tri-band (2.4, 5.2, and 5.8 GHz) wireless fidelity (WiFi) applications. It also investigates what type of diversity antenna is most suitable for WiFi router applications by comparing the two DRAs, along with a new space-diversity glass DRA. These three diversity glass DRAs are also compared with a commercial space-diversity monopole pair to benchmark the performance of the glass DRA in WiFi router applications. In our polarization-diversity antenna, a double-port feeding scheme is developed to excite different DRA modes. The frequencies of the DRA modes are tuned by using a stepped DRA. For the pattern-diversity design, a stacked DRA is introduced to broaden the bandwidth for both the conical and broadside radiation modes. All 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 monopole antenna was also measured, and the results are compared and discussed. It is found that the polarization-diversity omnidirectional DRA has the most stable BER among the three.
 

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:

This paper investigates the use of the μ robust controller for improving control performance of mobile satellite antennas. A robust control system of mobile satellite antennas is presented,  and the μ robust controller is designed according to the mobile satellite antennas systems model.  The effectiveness of the algorithm is verified by the experimental results.  It is clarified that the control performance of mobile satellite antennas is improved and the control system still maintains satisfactory control performance despite the change of road surface condition.

Keywords： mobile satellite antennas     theμdesign     robust control    

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Optimal array factor radiation pattern synthesis for linear antenna array using cat swarm optimization: validation by an electromagnetic simulator Article

Gopi RAM, Durbadal MANDAL, Sakti Prasad GHOSHAL, Rajib KAR

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 4,   Pages 570-577 doi: 10.1631/FITEE.1500371

Abstract: In this paper, an optimal design of linear antenna arrays having microstrip patch antenna elements has been carried out. Cat swarm optimization (CSO) has been applied for the optimization of the control parameters of radiation pattern of an antenna array. The optimal radiation patterns of isotropic antenna elements are obtained by optimizing the current excitation weight of each element and the inter-element spacing. The antenna arrays of 12, 16, and 20 elements are taken as examples. The arrays are designed by using MATLAB computation and are validated through Computer Simulation Technology-Microwave Studio (CST-MWS). From the simulation results it is evident that CSO is able to yield the optimal design of linear antenna arrays of patch antenna elements.

Keywords： Patch antenna     Linear antenna array     Cat swarm optimization (CSO)     Side lobe level (SLL)    

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Integrated 60-GHz miniaturized wideband metasurface antenna in a GIPD process Research Articles

Hai-yang XIA, Jin-can HU, Tao ZHANG, Lian-ming LI, Fu-chun ZHENG

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1,   Pages 174-181 doi: 10.1631/FITEE.1900453

Abstract: We propose a miniaturized wideband metasurface antenna for 60-GHz antenna-in-package applications. With the glass integrated passive device manufacturing technology, we introduce a coplanar-waveguide-fed (CPW-fed) ring resonator to char-acterize the material properties of the glass substrate. The proposed antenna is designed on a high dielectric constant glass substrate to achieve antenna miniaturization. Because of the existence of gaps between patch units compared with the conventional rec-tangular patch in the TM10 mode, the radiation aperture of this proposed antenna is reduced. Located right above the center feeding CPW-fed bow-tie slot, the metasurface patch is realized, supporting the TM10 mode and antiphase TM20 mode simultaneously to improve the bandwidth performance. Using a probe-based antenna measurement setup, the antenna prototype is measured, demonstrating a 10-dB impedance bandwidth from 53.3 to 67 GHz. At 60 GHz, the antenna gain measured is about 5 dBi in the boresight direction with a compact radiation aperture of 0.31λ0×0.31λ0 and a thickness of 0.06λ0.

Keywords： 60 GHz     Antenna-in-package (AiP)     Coplanar-waveguide-fed (CPW-fed) ring resonators     Glass integrated passive device (GIPD)     Metasurface antenna     Miniaturized antenna    

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Antenna-in-Package (AiP) Technology

Yueping Zhang

Engineering 2022, Volume 11, Issue 4,   Pages 18-20 doi: 10.1016/j.eng.2021.08.012

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Title Author Date Type Operation

Overview of Future Antenna Design for Mobile Terminals

Hanyang Wang

Journal Article

Zero ground clearance dual antenna pair for metal-cased fifth-generation multiple input multiple output smartphone

Le CHANG, Wenbao HE, Xiaomin CHEN, Xiaoxue TAN, Juan CHEN, Kai KANG, Yang YANG

Journal Article

A compact ultra-wideband crossed-dipole antenna for 2G/3G/4G/IMT/5G customer premise equipment applications

Jingli GUO, Lun CUI, Ying LIU, Baohua SUN, Xiaofeng LI,guojl@xidian.edu.cn,ID_CLXX@163.com

Journal Article

A Polarization Programmable Antenna Array

Dingzhao Chen, Yanhui Liu, Ming Li, Pan Guo, Zhuo Zeng, Jun Hu, Y. Jay Guo

Journal Article

Filtering antennas: from innovative concepts to industrial applications

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

Journal Article

Antenna-in-package system integrated with meander line antenna based on LTCCtechnology

Gang DONG,Wei XIONG,Zhao-yao WU,Yin-tang YANG

Journal Article

A novel wideband ring antenna for polarization/pattern diversity

Li SUN, Shigang ZHOU, Guanxi ZHANG, Baohua SUN

Journal Article

MIMO handset antenna for 5G/WLAN applications

Yong CHENG, Jing LU, Bing-qing SHENG

Journal Article

The Development Trent of Advanced Communication Technology

Bi Houjie

Journal Article

Antenna-in-package system integrated with meander line antenna based on LTCC technology

Gang Dong, Wei Xiong, Zhao-yao Wu, Yin-tang Yang,gdong@mail.xidian.edu.cn

Journal Article

Diversity Glass Antennas for Tri-Band WiFi Applications

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

Journal Article

The μ Robust Control Design for Mobile Satellite Antennas

Li Guo,Hu Jianfei,Ji Xianzheng

Journal Article

Optimal array factor radiation pattern synthesis for linear antenna array using cat swarm optimization: validation by an electromagnetic simulator

Gopi RAM, Durbadal MANDAL, Sakti Prasad GHOSHAL, Rajib KAR

Journal Article

Integrated 60-GHz miniaturized wideband metasurface antenna in a GIPD process

Hai-yang XIA, Jin-can HU, Tao ZHANG, Lian-ming LI, Fu-chun ZHENG

Journal Article

Antenna-in-Package (AiP) Technology

Yueping Zhang

Journal Article