Article
Multidisciplinary Sciences
Arslan Dawood Butt, Jalal Khan, Sarosh Ahmad, Adnan Ghaffar, Ahmed Jamal Abdullah Al-Gburi, Mousa Hussein
Summary: A compact, circularly polarized, low-profile biomedical implantable antenna operating in the 2.45 GHz ISM band was designed and tested. The antenna utilizes modified co-planar waveguide technology and has excellent performance. It is small enough to be implanted in the body, making it suitable for biomedical applications.
Article
Computer Science, Information Systems
Sarosh Ahmad, Asma Khabba, Adnan Ghaffar, Xue Jun Li
Summary: The research proposes a circularly polarized in-body antenna operating in the skin and muscle tissues of the human body, featuring compact size, flexibility, low SAR values, and high gain.
CMC-COMPUTERS MATERIALS & CONTINUA
(2022)
Article
Engineering, Electrical & Electronic
Yizhen Xu, Zilin Peng, Sichao Wen, Yuandan Dong
Summary: This paper presents a compact omnidirectional circularly polarized (OCP) linear antenna array with a planar configuration. By analyzing a shorted half mode patch antenna and introducing periodic structure changes, two naturally parallel arrays are obtained and integrated into a compact format to achieve OCP radiation. Experimental results verify the effectiveness of the design.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Weihua Tan, Xiaoyong Shan, Zhongxiang Shen
Summary: This communication presents a low-profile ultrawideband circularly polarized antenna made of Rogers RT/Duroid 5880 PCB board, which demonstrates a wide 10 dB return loss bandwidth and is suitable for indoor positioning applications.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Shahzeb Hayat, Syed Ahson Ali Shah, Hyoungsuk Yoo
Summary: The study introduces a miniaturized dual-band antenna with circular-polarization characteristics for a wireless-capsule endoscopic system, demonstrating satisfactory gain values and improved performance through various design features.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Chang-Feng Liang, Yun-Peng Lyu, Dong Chen, Chong-Hu Cheng
Summary: This article proposes a wideband circularly polarized stacked patch antenna based on TM11 and TM10 modes. By considering the mutual coupling between four ports, the active reflection coefficient (ARC) is used to describe impedance matching, leading to the generation of abnormal electric fields in the square patch. The design concept achieves left-hand circularly polarized radiation with a 3 dB gain variation bandwidth of 44.6% and peak gain of 9.5 dBic, while maintaining VSWR < 1.5 and AR < 1.5 dB, with an antenna efficiency of at least 64%.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Daibin Jing, Hua Li, Xiao Ding, Wei Shao, Shaoqiu Xiao
Summary: This letter presents a compact and broadband circularly polarized implantable antenna for wireless implantable medical devices in the 2.4 GHz ISM band. The proposed antenna is designed with a modified square ring and a stacked parasitic structure, reducing the size and achieving circular polarization. It provides satisfactory axial ratio bandwidth and impedance bandwidth, with a peak realized gain of -24.7 dBi. The device-level performance and robustness of the antenna were evaluated in human phantoms and validated through measurement in minced pork.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Abdenasser Lamkaddem, Ahmed El Yousfi, Kerlos Atia Abdalmalak, Vicente Gonzalez Posadas, Daniel Segovia-Vargas
Summary: This article presents a compact circularly polarized implantable antenna operating at 915 MHz, achieving circular polarization by using a unique structure. The antenna has a small size and high gain.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Vikrant Kaim, Binod Kumar Kanaujia, Karumudi Rambabu
Summary: The article introduces a ground radiating cubic antenna that can be implanted in the human upper arm for communication in industrial, scientific, and medical frequency bands. The antenna has multi-input multi-output capabilities, circular antenna elements with circular polarization. It provides diversified radiation while the human body is in motion and exhibits good MIMO properties.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Multidisciplinary Sciences
Sarita Ahlawat, Binod Kumar Kanaujia, Karumudi Rambabu, Ildiko Peter, Ladislau Matekovits
Summary: Assistive devices, especially the intraoral tongue drive system, are gaining popularity in helping physically disabled individuals with tetraplegia and spinal cord injuries. In this paper, a compact circularly polarized differential intra-oral antenna is designed and its performance is thoroughly analyzed. The antenna operates at 2.4 GHz and achieves the desired performance for mouth scenarios. The measurement results confirm that the proposed antenna can establish a direct interface with the intraoral tongue drive system.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Electrical & Electronic
Tian Lou, Xue-Xia Yang, Zixuan Yi, Steven Gao
Summary: This study presents a circularly polarized leaky wave antenna array with a wide 3 dB axial ratio beamwidth and low sidelobe level. By introducing an improved CP LWA element, the stable spatial phase difference between the orthogonal polarizations and good CP radiation are achieved. A ten-element CP linear array prototype is designed using Taylor pattern synthesis, achieving a wide beamwidth and low sidelobe levels.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Wan-Jun Yang, Yong-Mei Pan, Xiu-Yin Zhang
Summary: The single-layer low-profile circularly polarized filtering patch antenna, designed for WLAN applications, integrates filtering function without the need for an external filter using thin microstrip stubs, shorting pins, and U-shaped slots. The prototype operates at 2.4 GHz WLAN band with a low profile, passband bandwidth, and peak gain, demonstrating sharp roll-off rate and good out-of-band suppression levels.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2021)
Article
Multidisciplinary Sciences
Hung Tran-Huy, Huy-Hoang Nguyen, Thao Hoang Thi Phuong
Summary: This paper presents a metasurface based compact circularly polarized antenna with high gain and high front-to-back ratio characteristics. The compact size is achieved by using a 2 x 2 unit-cell metasurface, and the circular polarization is realized through coupling between the metasurface and a Y-shaped patch. The antenna has a 2.0% operating bandwidth, 6.3 dBi broadside gain, and 18 dB front-to-back ratio, making it suitable for compact RFID readers.
Article
Engineering, Electrical & Electronic
Chunling Chen
Summary: This study presents a design of a dual-band circularly polarized antenna for 1U CubeSat applications, which improves space utilization through the concept of structure reuse and successfully shares a single aperture with a microstrip antenna and a Fabry-Perot resonator cavity antenna. The antenna exhibits excellent performance in the UHF and C-band, making it suitable for CubeSat systems.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Fan Wu, Rong Lu, Jingxue Wang, Zhi Hao Jiang, Wei Hong, Kwai-Man Luk
Summary: This article reports a circularly polarized reflectarray with 2-D electronically steerable beam and introduces a new design approach to simplify element configuration and reduce the number of required diodes. Experimental results confirm the design's beam focusing, dynamic beam steering capabilities, as well as polarization purity and aperture efficiency.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Tao Yang, Fanteng Meng, Qingbo Xu, Yong-Xin Guo
Summary: This article proposes a fall feature enhancement and fusion method using the Stockwell transform with dual mmWave radars. Two radars synchronously collect human motions in different directions and extract micro-Doppler features using the Stockwell transform. The features obtained from the two radars are fused in the time-frequency domain for fall recognition. Experimental results show a recognition accuracy of up to 94.14%, which is beneficial for indoor fall detection system implementation.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Ya Fei Wu, Yongxin Guo, Yu Jian Cheng
Summary: A millimeter-wave self-progressive near-field focusing 2-D full frequency scanning ridge-gap waveguide slot array antenna is proposed, which uses adjacent linear NFF leaky-wave antennas (LWAs) connected in a double layer folded structure to achieve self-progressive phase shift feed network. The antenna design allows for high phase progression without increasing antenna area based on a high-density self-progressive feed network using ridge-gap waveguide. The fabricated antenna prototype is verified through experimental testing and shows promising results for near-field detection applications.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Chuan Shao, Hui Chu, Xiao-Hua Zhu, Yong-Xin Guo
Summary: A novel resonator-based approach for designing a tunable phase shifter is proposed. The phase shift is achieved by tuning the resonant frequency of the employed resonators. By analyzing a resonator loaded with varactors, the phase slope and required varactor capacitance ratio are calculated to ensure small phase errors and stable insertion loss fluctuation. A prototype is designed and fabricated to validate the approach, showing continuous phase shift with a small phase error and insertion loss fluctuation. The proposed design is the first of its kind and has potential for reducing phase errors and improving insertion loss flatness.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Geochemistry & Geophysics
Mou Wang, Shunjun Wei, Jun Shi, Xiaoling Zhang, Yongxin Guo
Summary: In this paper, a new perceptual learning framework named PeFIST-Net is proposed for 3-D synthetic aperture radar (SAR) imaging. The proposed method improves reconstruction accuracy by unfolding the fast iterative shrinkage-thresholding algorithm (FISTA) and exploring the sparse prior offered by convolutional neural network (CNN). Experimental results demonstrate that the proposed method can obtain well-focused SAR images from highly incomplete echoes while maintaining fast computational speed.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Article
Engineering, Electrical & Electronic
Abdelwahab Fawzy, Sumei Sun, Teng Joon Lim, Yucheng Yu, Chao Yu, Yongxin Guo
Summary: This paper proposes a novel integrated DPD solution supported by iterative learning control (ILC) and a neural network (NN) model to compensate for IQ imbalance, crosstalk, and PA nonlinearity in MIMO transmitters. Our scheme achieves excellent performance in-band and out-of-band, and has 50% lower running complexity compared to other polynomial-based models.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Computer Science, Information Systems
Bo Wang, Hao Zhang, Yong-Xin Guo
Summary: This article proposes a millimeter-wave FMCW radar-based fall detection method using the PCV. It uses DT-PCV, rPBC, and RT-PCV as inputs to two CNNs, and can detect sudden and soft fall motions with high accuracy, sensitivity, and specificity.
IEEE INTERNET OF THINGS JOURNAL
(2023)
Editorial Material
Automation & Control Systems
Yi Guo
IEEE ROBOTICS & AUTOMATION MAGAZINE
(2023)
Editorial Material
Automation & Control Systems
Yi Guo
IEEE ROBOTICS & AUTOMATION MAGAZINE
(2023)
Article
Engineering, Electrical & Electronic
Jingyuan Zhang, Xu Yan, Haorui Luo, Hao Zhang, Yongxin Guo
Summary: In this paper, a new systematic approach of matching network (MN) layout synthesis and optimization for power amplifiers (PAs) is proposed based on implicit space mapping (ISM). The proposed modified ISM can shift the optimization work to the circuit schematic simulations by calibrating carefully-selected auxiliary parameters in the circuit based on EM data. To validate the proposed method, an eligible dual-band inter-stage MN layout is rapidly optimized with only 10 runs of EM-simulations, while a corresponding 16/26.5 GHz concurrent dual-band PA is implemented in a 0.15-μm GaAs pHEMT technology. It exhibits a measured small-signal gain of 21.7/14.1 dB, peak power-added efficiency of 30.2%/40.5%, and saturated output power of 24.8/28.1 dBm with a compact chip size of 2.4 mm(2).
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Engineering, Electrical & Electronic
Pengde Wu, Si-Ping Gao, Yi-Dan Chen, Zhi Hua Ren, Pengyu Yu, Yongxin Guo
Summary: This article proposes a wireless uplink method for a sensor node based on modulating rectifier-generated harmonics, which shows potential for lowered energy consumption and Tx-to-Rx leakage. By integrating a rectifier and a transmitter, the wireless power reception and the modulation of reradiated second harmonic are achieved, while maintaining the rectification performance.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2023)
