Article
Engineering, Electrical & Electronic
Wenxing An, Kai Han, Yu Luo, Yongqiang Wang
Summary: This paper presents a 4 x 4 slot array antenna with solar cells designed for the 5.8 GHz band. It features a lightweight and low profile structure, achieved through coplanar waveguide excitation and foam substrate. The measured impedance matching band spans from 5.3 to 6 GHz, with a gain range of 13.7 to 16.3 dBi within the pass band. A peak gain of 14.8 dBi is obtained for the target band of 5.725 to 5.85 GHz, accompanied by a unidirectional pattern. The solar cells cover 72.5% of the total area and have an enhanced capacity for photovoltaic power generation.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Computer Science, Information Systems
Xizhou Deng, Ping Yang, Shengtao Chen, Wang Ren
Summary: This paper introduces a novel dual-band circularly polarized rectifier antenna for collecting environmental electromagnetic energy at 2.4 and 5.8 GHz. The antenna achieves circular polarization in these two frequency bands and exhibits wide impedance bandwidths. It also has high gains and can potentially self-power low-power devices in the Internet of Things.
Article
Engineering, Electrical & Electronic
Guo-Ping Gao, Ben-Kai Zhang, Jing-Hang Dong, Zhi-Heng Dou, Zhuo-Qi Yu, Bin Hu
Summary: A novel reconfigurable antenna that operates in both ON- and OFF-body modes is proposed in this study. The antenna achieves omnidirectional and unidirectional radiation by using the TM00 and TM10 mode of a rectangular patch. By cutting a rectangular slot on the patch, the resonance frequency of the unidirectional mode is shifted to a lower frequency, resulting in a smaller antenna size and overlapping impedance bandwidths. Four p-i-n diodes are used for arbitrary switching of the operating mode. The measured results show that the antenna covers the 2.4-GHz ISM band with an overlapped bandwidth of 3.8%, and it maintains stable performance when placed on different parts of the human body. The calculated specific absorption rate (SAR) values meet the standards of the United States and Europe, making the proposed antenna suitable for wearable systems.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Chemistry, Analytical
Miroslav Cupal, Zbynek Raida
Summary: In this paper, a 3D knitted fabric is utilized to design a circularly polarized textile-integrated antenna. By modifying the antenna's structure, the polarization can be changed. The antenna exhibits high gain and is suitable for ISM bands of 5.8 GHz and 24 GHz.
Article
Engineering, Electrical & Electronic
Zhenyu Liu, Yongjian Zhang, Yijing He, Yue Li
Summary: In this article, a compact and efficient air cavity antenna with a cage-like structure for 2.4 GHz WLAN is proposed. By utilizing shorting vias and blind vias, the antenna achieves a smaller size and higher radiation efficiency. The antenna achieves over 90% measured total efficiency in the WLAN band.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Shan Gao, Le Chang, Anxue Zhang, Yue Li, Zhijun Zhang
Summary: This article addresses the issue of exact coverage problem of unbalanced Wi-Fi 6 bands by engineering the TM0.5,0 and TM0.5,1 modes of the half-mode patch while maintaining small volume. The design guideline includes selecting proper patch size, optimizing feeding positions, and using lumped components. The proposed half-mode patch with the smallest volume among reported Wi-Fi 6 dual-band patch antennas fully covers the Wi-Fi 6 bands and suits the optimal Wi-Fi 6 RF front-end architecture.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Sivabalan Ambigapathy, Jothilakshmi Paramasivam
Summary: Patch antennas are widely used in wearable and implantable devices due to their lightweight characteristics. This study proposes a method to design dual-band reconfigurable fractal antennas using artificial neural networks and automated frequency characteristics analyzers.
APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Weiquan Zhang, Yue Li, Kunpeng Wei, Zhijun Zhang
Summary: This article presents a compact multiple-input-multiple-output (MIMO) microstrip antenna system that covers the 2.4 and 5 GHz wireless local area network (WLAN) bands. The dual-band characteristics are achieved by exciting the TM01 and TM03 modes of a microstrip antenna, using a rectangular slot to improve the radiation capability of the TM03 mode, and utilizing two probes to tune the resonant frequency of the TM01 mode. High interport isolation at the two WLAN bands is achieved through isolation enhancement at the lower and upper-frequency bands, introducing split loops to reduce mutual coupling at the 2.4 GHz band, and adding dipole elements in the rectangular slot for high isolation at the 5 GHz band. The proposed antenna system operates at 2.25-2.63 and at 5.14-6.06 GHz, with measured maximum mutual coupling of less than -15.3 dB at both operating frequency bands.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Amit Baran Dey, Neelkamal Semwal, Wasim Arif
Summary: This paper presents a coplanar waveguide fed rectenna system for efficient RF energy harvesting in 2.4 GHz Bluetooth/WLAN applications. The results show that the designed rectenna exhibits high conversion efficiency and output voltage.
JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS
(2022)
Article
Computer Science, Information Systems
Je Hyeon Park, Nguyen Minh Tran, Sa Il Hwang, Dong In Kim, Kae Won Choi
Summary: This paper presents a 5.8 GHz RF wireless power transfer system with 64 transmit antennas and 16 receive antennas, offering long-range power transfer for low-power IoT devices. A beam scanning algorithm is proposed to effectively transfer power in both radiative near-field and far-field zones. The experiments demonstrate the system's capability to transfer power at distances of 25 meters with high efficiency.
Article
Computer Science, Information Systems
Muhammad Fitra Zambak, Samir Salem Al-Bawri, Muzammil Jusoh, Ali Hanafiah Rambe, Hamsakutty Vettikalladi, Ali M. Albishi, Mohamed Himdi
Summary: This study proposes a portable L-shaped microstrip patch antenna with enhanced gain for IoT 2.4 GHz ISM applications. Through parametric simulations, it is found that the antenna's matching impedance and performance can be improved by modifying the rectangular back slot and fine-tuning the front L-shaped patch. The finalized antenna operates at 2.4 GHz with a 98% radiation efficiency and peak gains of 2.09 dBi (measured) and 1.95 dBi (simulated).
Article
Computer Science, Information Systems
Phalguni Mathur, Robin Augustine, M. Gopikrishna, Sujith Raman
Summary: This paper presents a multi-purpose dual MIMO antenna system for 5G mobile systems, which includes two sets of MIMO antennas operating in different frequency bands. The system design is minimal, allowing independent use of 5G and 4G frequencies.
Article
Energy & Fuels
Xinyuan Li, Hui Xiao, Huaiqing Zhang, Zhewei Liu, Wenxiong Peng
Summary: This paper proposes a 5.8 GHz pi-stub decoupling network to enhance the performance of a receiving antenna array in microwave wireless power transmission systems. The results demonstrate that the performance of the array is greatly improved by loading the pi-stub decoupling network, with up to 36.4% increase in receiving power. The scalability and effectiveness of the network are also showcased, indicating its significant potential in large-scale receiving arrays.
Article
Engineering, Electrical & Electronic
Zhen-Xing Xia, Kwok Wa Leung, Nan Yang, Kai Lu
Summary: The study investigates a dual-fed dual-frequency shared-aperture antenna array with a large frequency ratio, consisting of microwave ground-surrounded patch antenna and millimeter-wave slot antenna subarray. A prototype with C-band 2 x 2 patch antenna array and Ka-band 8 x 8 slot antenna array was designed, fabricated, and tested, showing good matching and radiation characteristics with over 32 dB of measured intraband isolations.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Hong Yi Kim, Tae Hwan Jang, Kyung Pil Jung, Yongha Lee, Chul Soon Park
Summary: This study proposes a new multidirectional, multibeam antenna-in-package (AiP) for the 60 GHz unlicensed band. It has the potential to be used in various mobile devices with high realized gain and wide impedance bandwidth.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Xujun Yang, Lei Ge, Jianpeng Wang, Chow-Yen-Desmond Sim
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2018)
Article
Engineering, Electrical & Electronic
Li-Wei Zhang, Yong-Ling Ban, Chow-Yen-Desmond Sim, Jinhong Guo, Zhe-Feng Yu
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2018)
Article
Engineering, Electrical & Electronic
Bin Yu, Kang Yang, Chow-Yen-Desmond Sim, Guangli Yang
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2018)
Article
Engineering, Electrical & Electronic
Jia-Qi Zhu, Yong-Ling Ban, Rui-Min Xu, Chow-Yen-Desmond Sim, Jinhong Guo, Zhe-Feng Yu
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2018)
Article
Engineering, Electrical & Electronic
Chao Feng Ding, Xiu Yin Zhang, Cheng-Dai Xue, Chow-Yen-Desmond Sim
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2018)
Article
Computer Science, Interdisciplinary Applications
Huanqing Zou, Yixin Li, Chow-Yen-Desmond Sim, Guangli Yang
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
(2018)
Article
Computer Science, Information Systems
Xujun Yang, Lei Ge, Dengguo Zhang, Chow-Yen-Desmond Sim
WIRELESS COMMUNICATIONS & MOBILE COMPUTING
(2018)
Article
Computer Science, Information Systems
Zhao Xiao-Fang, Liu Hua-Zhu, Li Yi, Zhou Shi-Gang, Chow-Yen-Desmond Sim
WIRELESS COMMUNICATIONS & MOBILE COMPUTING
(2018)
Article
Computer Science, Interdisciplinary Applications
Yi-Fang Lin, Chien-Hung Chen, Chia-Te Liao, Chow-Yen-Desmond Sim, Chia-Cheng Tseng, Hua-Ming Chen
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
(2019)
Article
Computer Science, Interdisciplinary Applications
Yixin Li, Chow-Yen-Desmond Sim, Yong Luo, Guangli Yang
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
(2019)
Article
Engineering, Electrical & Electronic
Quangang Chen, Huawei Lin, Jianpeng Wang, Lei Ge, Yujian Li, Tianqi Pei, Chow-Yen-Desmond Sim
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2019)
Article
Computer Science, Information Systems
Abdullah G. Alharbi, Jayshri Kulkarni, Arpan Desai, Chow-Yen-Desmond Sim, Ajay Poddar
Summary: A tapered symmetrical coplanar waveguide (S-CPW) fed monopole antenna with multiple narrow slots and slotted stubs (MSS) is proposed and studied. The antenna is transformed into a two-antenna MIMO type with small size and good isolation, suitable for various wireless communication and satellite applications.
Proceedings Paper
Engineering, Electrical & Electronic
Chow-Yen-Desmond Sim, Jia-He Zhuang, Wei-Sheng Liao, Jin-Rong Liou, Chia-Chin Hsu, Jian-Yu Huang
2018 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP)
(2018)
Proceedings Paper
Engineering, Electrical & Electronic
Jia-Qi Zhu, Yong-Ling Ban, Rui-Min Xu, Ji-Wei Lian, Chow-Yen-Desmond Sim
2018 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION & USNC/URSI NATIONAL RADIO SCIENCE MEETING
(2018)
Proceedings Paper
Engineering, Electrical & Electronic
Chow-Yen-Desmond Sim, Bo-Yu Chen, Chih-Heng Lin, Hsin-Lung Su, Tuan-Yung Han, Guan-Long Huang
2018 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION & USNC/URSI NATIONAL RADIO SCIENCE MEETING
(2018)
