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Design of a Low Sidelobe Feed Network Based on the Louver-Shaped Defected Ground Structure Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-3-25 Zhang Yuan, Xi Songtao
In this paper, a low sidelobe feeding network has been developed utilizing the louver-shaped defected ground structure (DGS). By adjusting the louver-shaped DGS, the output amplitude and phase of the corresponding ports can be altered, minimizing deviations from theoretical values. This enables antenna arrays equipped with this feeding network to more easily achieve low sidelobe performance. The impact
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A Compact Highly Isolated Four-Element Antenna System for Ultra-Wideband Applications Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-3-20 V. Prithivirajan, Mariya Princy Antony Saviour, J. Seetha, B. Siva Kumar Reddy, Anand Anbalagan, D. Rajesh Kumar
A small, orthogonally polarized, ultra-wideband (UWB), four-port multiple-input multiple-output (MIMO) printed antenna is presented in this study. The envisioned antenna is built up of four microstrip fractal-based circular patch elements, each of which is fed by a microstrip line with a 50-ohm impedance. The use of a defective ground plane allows for the ultra-wideband frequency response to be obtained
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Advertisement Synthesis Network for Automatic Advertisement Image Synthesis Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-3-18 Qin Wu, Peizi Zhou
Image advertising is widely used by companies to advertise their products and increase awareness of their brands. With the constant development of image generation techniques, automatic compositing of advertisement images has also been widely studied. However, the existing algorithms cannot synthesise consistent-looking advertisement images for a given product. The key challenge is to stitch a given
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Phase Error Criterion Based Adaptive Algorithm for Frequency Estimation Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-3-18 Prayuth Inban, Rachu Punchalard, Chawalit Benjangkaprasert
A simple phase error criterion (PEC-)-based adaptive algorithm for estimating the frequency of a complex sinusoidal signal in additive white Gaussian and impulsive noises is proposed. The proposed technique makes use of the instantaneous phase response of a first-order complex linear predictor (CLP) as a driving function to update the frequency parameter of the CLP. The proposed PEC is attractive due
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Propagation Characteristics and Magnetic Field Distribution of Rotating Magnet-Based Mechanical Antenna in the Air-Seawater-Seabed Three-Layer Medium Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-3-14 S. P. Chen, Q. Zhou, J. Y. Zhang, S. Y. Wang
Aiming at the application requirements of underwater cross-domain communication, based on the equivalent relationship between the rotating permanent magnet and the orthogonal time-varying current loop, this paper establishes an air-seawater-seabed three-layer medium model and analyzes the magnetic field distribution and propagation characteristics of the rotating permanent magnet-based mechanical antenna
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Triple-Band MIMO Antenna for 5 G Terminals Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-3-13 Adnane Ghiat, Abdelwahed Tribak, Jaouad Terhzaz, Asmae Mimouni, Hanan Akhdar
In this work, a triple-band, four-element antenna is designed for fifth-generation (5 G) terminals operating in LTE band 42 (3.4–3.6 GHz), LTE band 43 (3.6–3.8 GHz), and the new 5 G radio band (4.8–5.0 GHz). The proposed antenna array consists of two different types of antenna elements: a T-shaped element, which is connected to the feed line, and a C-shaped element, which is used to divide the bandwidth
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Wirelessly Pattern Reconfigurable Yagi Antenna Based on Radio Frequency Identification Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-3-9 Chuankui Shen, Zhengxing Wang, Liekun Yang, Fengcheng Mei, Terry Tao Ye
This paper presents, for the first time, the implementation of a pattern reconfigurable Yagi-Uda antenna utilizing radio frequency identification (RFID) technology for remote pattern control. The proposed scheme emphasizes the use of wireless communication instead of long metal cables, resulting in improved stability of the antenna’s pattern and return loss. Two low-power consumption single-pole-double-throw
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Evaluation of the Inductive Coupling between Coplanar Concentric Coils in the Presence of the Ground Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-3-8 Mauro Parise
An analytical approach is presented that allows deriving an exact series-form representation for the flux linkage between two physically large concentric circular coils located on a lossy soil. The expression comes from a three-step analytical procedure. First, the integral expression for the flux linkage is converted into a double integral consisting of a finite and a semi-infinite integral. Next
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Design and Realization of an X Band Monopulse Feed Antenna for Low Earth Orbit (LEO) Satellite Ground Station Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-2-26 İsmail Şişman, Tugba Haykir Ergin, Duygun Erol Barkana, Hüseyin Arda Ülkü
In this work, design of a five-element compact dual-polarization X band monopulse feed antenna using a 7.3 m Cassegrain-type reflector for Low Earth Orbit (LEO) satellite ground station is presented. The designed antenna has reached 32 dB/K G/T value, the side lobe level of the designed antenna is at the level of −24 dB, the crosspolarization value is −35 dB, and the port isolation value is below −29 dB
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A Deep-Learning Approach to a Volumetric Radio Environment Map Construction for UAV-Assisted Networks Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-2-26 Bethelhem S. Shawel, Dereje H. Woldegebreal, Sofie Pollin
Providing global coverage for ubiquitous users is a key requirement of the fifth generation (5G) and beyond wireless technologies. This can be achieved by integrating airborne networks, such as unmanned aerial vehicles (UAVs) and satellite networks, with terrestrial networks. However, the deployment of airborne networks in a three-dimensional (3D) or volumetric space requires a new understanding of
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A Novel Ultra-Miniaturized Angularly Stable Frequency Selective Surface for L-Band Shielding Applications Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-2-7 Malathi Kanagasabai, Shini Ramadoss, Lavanya Viswanathan, Gulam Nabi Alsath Mohammed, Shanmathi Shanmuganathan, Sandeep Kumar Palaniswamy
This paper presents a novel ultraminiaturized frequency selective surface (FSS) for L-band electromagnetic shielding applications. A basic square loop incorporated with folded arms in the top layer constructs the single-layer FSS design. Band-stop characteristics for the entire L-band operating frequency ranging from 1 GHz to 2 GHz are offered by the proposed design. An ultraminiaturized profile of
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Spectral Smoothness of Ground Plane Backed Log-Periodic Dipole Antennas for Radioastronomical Applications Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-2-7 Georgios Kyriakou, Pietro Bolli, Mirko Bercigli
The spectral smoothness properties of the low-frequency array of the square kilometer array (SKA), namely, SKA-Low, are an important issue for its scientific objectives to be attainable. A large array of 256 log-periodic dipole antennas, installed on top of a 42 m circular ground plane, will work as an SKA-Low station in the frequency range of 50–350 MHz. In this article, the ground plane-induced effects
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An EIRP Measurement Method of High-Power Microwave Systems Based on Near-Field Testing Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-2-7 Xianggang Hu, Jiancang Su, Mingtao Zhang, Xi Li, Dingkun Ma, Jingang Gong, Kewei Cheng, Jia Liu, Jiande Zhang, Rui Li, Jie Cheng, Shaotong Wu
The equivalent isotropic radiated power (EIRP) of high-power microwave (HPM) systems is a core-evaluating indicator. In practical testing, locating a suitable test site for the far-field method becomes challenging due to the requisite antenna separation. The conventional near-field method necessitates the extraction of the antenna’s near-field distribution, resulting in a testing system of intricate
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Design and Implementation of Novel H-Shaped Self-Diplexing SIW Rectangular Cavity-Backed Antenna with Harmonic Suppression for Terrestrial Communications Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-2-3 Ravindiran Asaithambi, Rajkishor Kumar
A novel and low profile, planar, rectangular cavity-backed self-diplexing substrate integrated waveguide (SIW) antenna with H-shaped slot for dual-band wireless services was designed and demonstrated. The proposed antenna structure radiates from H-shaped slot, which is etched on top of the SIW rectangular cavity, and is excited by two separate 50 Ω microstrip feed lines. The H-shaped slot is a combination
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All-Textile Compact Ultra-Wideband Microstrip Antenna with Full Ground Plane for WBAN Applications Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-1-27 Jinxin Du, Ruimeng Wang, Haiyan Li, Xue-Xia Yang, Christophe Roblin
A novel low-profile all-textile microstrip antenna for ultra-wideband (UWB) applications in wireless body area networks (WBANs) is presented. The antenna incorporates flexible materials such as felt and conductive fabrics which provide optimal wearing comfort and durability. The use of a single dielectric substrate layer facilitates the integration process. The antenna also features a full background
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Supervised AutoEncoder-Based Beamforming Approach for Satellite mmWave Communication Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-1-22 Seyed Pouya Shojaei, Hossein Soleimani, Mohammad Soleimani
Beamforming is a technique commonly used in wireless communication systems to enhance the signal quality of a receiver. In this study, we compare the performance of an encoder-based beamformer with convolutional neural network (CNN) and minimum variance distortionless response (MVDR) approaches in terms of signal-to-interference-plus-noise ratio (SINR). Our results show that the encoder-based approach
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Wireless Channel Model Based on Ray Tracing Algorithm in the Sea Environment Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-1-20 Zhongyu Liu, Qi Yao, Quanqing Li, Lixin Guo, Shuo Hu
The maritime environment is complex and changeable, and an accurate maritime wireless channel model is particularly difficult to establish. This study investigates the sensitivity of a three-dimensional (3D) maritime ray tracing (RT) model for the use of the geometrical optics in radio channel characterizations of maritime environments. The channel measurement experiments are mainly carried out at
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Multitargets Orientation Technique Based on Reflection Characteristic Analysis Using an Inverse Diffraction Parabolic Equation Int. J. Antennas Propag. (IF 1.5) Pub Date : 2024-1-5 Qi Guo, Daozong Sun, Zhen Li, Shilei Lyu, Xiuyun Xue
In this article, the inverse diffraction parabolic equation (IDPE) model based on the finite difference method is proposed, which is first applied in the multiple nonradiation targets orientation technology. In principle, the electromagnetic signal propagating in the transmission path will produce a reflected signal back to the source end while encountering the discontinuous objects. The distribution
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Design and Characterization of a Traveling-Wave Antenna for Millimeter Applications in the Sub-THz Band Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-12-30 Ndanga Adamou Eric, Eke Samuel, Matanga Jacques, Doka Yamigno Serge, Nicolas Corrao, Tan Phu Vuong
The main challenge in manufacturing antennas in the sub-THz band is their small size, which requires adapted manufacturing tools. This paper proposes a uniform linear 3 × 1 traveling-wave antenna array (ULTWAA) for millimetre applications in the sub-THz band. The designed array allows a continuous beam orientation of ±46.1° in the E-plane. A small quarter-wave line added to the ends of the antenna
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A Conformal Phased Array with Low Profile and Wide-Scanning Performance for SAR Application Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-12-28 Runzhi Tang, Senlin Lu, Shiwei Qu, Shiwen Yang
A low-profile wide-scanning conformal phased array (CPA), with cavity-backed stacked patch elements, is presented in this paper. To reduce the array profile, a partially dielectric-filled cavity is employed in each element, and to enhance its scanning performance, the cavity walls are deliberately modified. Finally, the designed element operates in a frequency band of 1.45∼1.75 GHz, with a profile
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Triple-Band MIMO Antenna with Integrated Decoupling Technology Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-12-27 Ruihua Ma, He Huang, Xiaoping Li, Xuelei Wang
This paper proposes an integrated decoupling method that improves the flexibility of multiport, multiband antenna design and simplifies the antenna structure. First, a dual-band L-type MIMO antenna with center frequencies of 2.6 GHz and 5.6 GHz is created using the neutralization-line decoupling method and then a dual-band L-type MIMO antenna covering the WiFi spectrum (2.3–2.5 GHz and 4.6–5.6 GHz)
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Research on Electromagnetic Scattering Influence of Transmission Towers on Medium Wave Antenna Based on the Characteristic Mode Theory Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-12-26 Shiqi Zong, Chaoqun Jiao, Jiangong Zhang, Zhibin Zhao, Zheyuan Gan
Electromagnetic scattering from UHV transmission towers is a major factor affecting the safety and stability of the surrounding antenna signal system. In this paper, the electromagnetic scattering effect of ±800 kV UHV DC transmission tower on the medium-wave antenna is investigated based on the characteristic mode theory (CMT). The simulation model of the tower and antenna is established, and the
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Liquid Crystal Polymer-Based Flexible Trap Ultra-Wideband Antenna Design Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-12-26 Xinwei Wang, Zhaoyang Xue, Qing Liang, Wei Xiong, Zhiyao Zhang
The wearable ultra-wideband antenna that is appropriate for body area networks is designed and implemented in this article. Stepped circular radiation patches, microstrip feeders, and trapezoidal floors make up the majority of the antenna. Good bending qualities have been attained by using liquid crystal polymer, a flexible material, as a dielectric substrate. An antenna measuring 30 mm × 35 mm × 0
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Identification of Control Parameters Using Taguchi Method for Hybrid Real-Binary Differential Evolution Algorithm and Its Applications in Electromagnetic Optimization Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-12-22 Wenchao Du, Jianhui Wang, Ruidong Wang, Xingning Jia, Guoche Qin, Chunshu Li
The hybrid real-binary differential evolution (HDE) algorithm has been proficient in addressing electromagnetic optimization problems (EOPs) involving both real and binary variables. However, its optimization performance on different control parameter (CP) settings is not further studied, and the method to determine the values of CPs is more likely to use the trial-and-error method, which lacks universality
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Optimized Surface Adjustment Method for Large Deployable Cable Network Antennas Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-12-18 Xin Zhang, Lipeng Wang, Xiaofei Ma, Yizhe Wang
Large deployable mesh reflectors typically require high surface accuracy and have large apertures. The accumulation of machining errors in a large number of cables can lead to significant deviations between the final manufactured surface and the theoretical surface, particularly due to the large number of cables involved. Adjusting the mesh reflector is often necessary to meet the surface accuracy
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Design of Phase Shifters with Enhanced Selectivity and Miniaturized Size Using D-CRLH Resonator Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-12-18 Zhe Chen, Jingbo Wang, Jianxun Tang
This paper proposes and demonstrates a novel filtering phase shifter with a compact size and good frequency selectivity using two dual composite right/left-handed (D-CRLH) resonators. Firstly, the study analyzes the D-CRLH structure to gain insights into its unique properties, providing a physical understanding for subsequent design procedures. Then, an ad hoc systematic design procedure for the D-CRLH
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Design of Wideband Two-Sided Bandpass Frequency Selective Surface for X, Ka, and Ku Band Application Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-12-5 V. Vanitha, S. Esther Florence, A. Alaguraj, Lakshmi Janaki Gollamudi
A novel wideband bandpass frequency-selective surface functioning at X, Ku, and Ka bands is proposed in this article. The designed FSS has a metallic square loop and a circular ring, and they are printed on both sides of the FR4 substrate. The proposed design FR4-based single-layer FSS is operating from 11.075 GHz to 22.075 GHz with a fractional bandwidth of 66.36%. The parameters of the square loop
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Side Null Analysis of the Main-Auxiliary Antenna Array for Noncooperative Interference Cancellation Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-11-30 ZheYu Li, JiaHao Zhang, YaXing Li, FangMin He, HongZhang Gao, Jin Meng
In interference cancellation, the null at the angle of arrival (AoA) of interference can suppress interference. However, due to the large spacing between array elements and the periodicity of the array, some small nulls at the angles of noninterference are formed inevitably. When the AoA of the desired signal is in these small nulls, they impair the effectiveness of interference cancellation by attenuating
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Performance Analysis of MIMO Antenna Design with High Isolation Techniques for 5 G Wireless Systems Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-11-29 Suverna Sengar, Praveen Kumar Malik, Puneet Chandra Srivastava, Kiran Srivastava, Anita Gehlot
This paper investigates different approaches for achieving isolation in a MIMO antenna design. It provides an in-depth comparison of these techniques, analyzing their advantages and disadvantages. The challenges of obtaining sufficient isolation in modern MIMO antenna design are discussed, and various isolation methods developed for the MIMO design are examined. The study introduces a compact 28 GHz
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Design of a Three-Dimensional Uniform UHF Near-Field RFID Reader Antenna Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-11-24 Yuan Yao, Yani Xue, Xiaojuan Ren, Junsheng Yu, Xiaohe Cheng, Xiaodong Chen
This paper proposes a three-dimensional uniform ultra-high frequency (UHF) near-field radio frequency identification (RFID) reader antenna. The antenna achieves a uniform electric field in the x and y directions by placing a single branch microstrip line along the x-axis and y-axis directions, respectively. It reaches a uniform electric field in the z-direction by a centrosymmetric four-branch microstrip
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Single-Layer Differential-Fed Wideband Metasurface Antenna Using Characteristic Mode Analysis Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-11-11 Chao Huang, Chen-Jiang Guo, Yi Yuan, Xia Ma, Jun Ding
A single-layer differential-fed (DF) wideband metasurface (MTS) antenna is proposed in this paper. As the prototype, a three-by-three MTS formed by identical rectangular patches is investigated at first. We observe that there are many unwanted higher-order modes (HOMs) resonating near the wanted fundamental mode. Two probes with differential signals feed MTS on its centerline to suppress the majority
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Design of Active Integrated GNSS Antenna Based on the Impedance Transforming Quadrature Four-Feed Network Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-11-6 Yao Wang, Hongmei Liu, Shuo Li, Zhongbao Wang, Shaojun Fang
In the paper, a wideband miniaturized impedance-transforming quadrature four-feed network with a flat output phase difference is presented and applied to the design of an active integrated GNSS antenna where no extra impedance matching circuit is needed. The features of impedance transformation and flat output phase difference are achieved by the proposed miniaturized rat-race coupler. When combining
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An Improved GOMP Sparse Channel Estimation for Vehicle-to-Vehicle Communications Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-11-6 Xin Chen, Xudong Zhang, Yaolin Zhu, Ruiqing Ma
Reliable channel estimation is critical for wireless communication performance, especially in vehicle-to-vehicle (V2V) communication scenarios. Aiming at the major challenges of channel tracking and estimating as the highly dynamic nature of vehicle environments, an improved generalized orthogonal matching pursuit (iGOMP) is proposed for V2V channel estimation. The iGOMP algorithm transforms the channel
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A Contact-Less Electrically Small Antenna Sensor for Retinal Cancer Cell Detection Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-10-27 Shaik Rizwan, Kanaparthi V. Phani Kumar, P. Sandeep Kumar, Sachin Kumar
A new noninvasive and portable diagnostic system for detecting ocular tumors has been proposed. The system uses a contact-less electrically small antenna sensor to detect retinal cancer cells. The antenna sensor is operated in the ISM (Industrial, Scientific, and Medical) 2.413 GHz band and has electrical dimensions of 8 × 16.2 × 0.35 mm3. The antenna sensor is fabricated on a biodegradable Teslin
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A High-Efficient Method for Synthesizing Multiple Antenna Array Radiation Patterns Simultaneously Based on Convolutional Neural Network Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-10-17 Shiyuan Zhang, Chuan Shi, Ming Bai
This paper proposes a high-efficient method that utilizes deep learning technology for synthesizing multiple antenna array radiation patterns simultaneously. More in details, the mathematical feasibility of using neural networks to optimize and synthesize radiation patterns of antenna arrays is demonstrated. Boundary functions are designed to reshape the important characteristics of target radiation
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Real-Time Implementation of a Novel Design Approach for Sub-GHz Long-Range Antenna for Smart Internet of Things Communication Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-10-16 Sneha Bhardwaj, Praveen Kumar Malik, Anish Gupta, Rajesh Singh
This research article designs and develops a planar small-size antenna design for smart Internet of Things (IoT) communication with long-range technology (LoRa). The proposed system is best suited for transceiver systems in this automation and sensing era. In the proposed antenna, the ground, the radiating element, and the stub feed are designed on the same side of the substrate, keeping in mind that
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A Triple-Band Broadband Miniature Antenna Design for Implantable Continuous Glucose Monitoring Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-10-13 Zhiwei Song, Xiaoming Xu, Hongxiang Miao, Lu Wang
This paper presents a miniaturized triband implantable planar antenna that covers the industrial, scientific, and medical (ISM) band and the Wireless Medical Telemetry Service (WMTS) band which can be used in a continuous blood glucose monitoring device. The antenna consists of a slotted radiating patch and a ground plane with a cross slot to miniaturize its size. The overall antenna size is only 51
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A Compact Planar Ultra-Wideband Array Antenna Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-10-10 Junli Zhu, Mengfei Chen, Ziting Li, Jingping Liu
Ultra-wideband (UWB) antennas have recently gained prominence in communication, radar technology, and electronic warfare domains. The quick development of these antennas is due to the wide bandwidth requirements of pulse radar, ground penetrating radar, electromagnetic compatibility, spaceborne communication systems, stealth target detection, and more. Aiming to address the defects of existing UWB
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A Robust Symbol-Level Precoding Method for Multibeam Satellite Systems Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-10-10 Qi Wang, Wuyang Zhou
Compared to interference mitigating precoding, interference exploiting symbol-level precoding (SLP) requires less transmit power to guarantee the quality of service in a multibeam satellite system. However, due to the large roundtrip time (RTT), it is impractical to obtain real-time channel state information on the satellite side. The random channel state information (CSI) phase error of outdated CSI
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Analysis of C-V2X Antenna Performance on Vehicular Panoramic Glass Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-10-10 Ahmad S. Ibrahim, Daniel N. Aloi, Amanpreet Kaur
This paper presents an analysis of a cellular vehicle-to-everything (C-V2X) quarter-wavelength monopole antenna performance when mounted on full glass roof. Antenna gain measurements performed on a full glass roof exhibited a performance degradation in a linear average gain (LAG) of 8 dB compared to when the same antenna is mounted on a metallic ground plane. In addition, the antenna radiation pattern
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Novel Meandered Line EBG Filters with Significant Size Reduction Using Sine Tapering Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-10-4 S. M. Shakil Hassan, Kalyan Kumar Halder, Md. Nurunnabi Mollah
Tapering electromagnetic bandgap (EBG) structures is a common method in designing microstrip filters with different periodic structures. A novel technique for tapering EBG structures with the amplitude coefficients obtained from the sine function has been illustrated. This method deduces mellifluous coefficients that improves the performance with reasonable stopband width, preferable insertion loss
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A Flexible Wearable Antenna with Annular Solar Eclipse Structure for ISM/WLAN/WIMAX/Bluetooth Applications Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-10-4 Zhen Yu, Runzhi Sun, Guodong Zhang, Ruirong Niu, Xiaoying Ran, Ziheng Lin
This paper proposes a wearable flexible dual-band antenna that covers the 2.34–2.68 GHz and 4.05–5.26 GHz frequency bands. This antenna employs a novel nested imitation annular solar eclipse structure, where the main radiator is a gradually widening loop, and another loop is coupled inside the radiator. The antenna, with overall dimensions of 40320.3 mm³, utilizes polyimide as the dielectric material
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Ultra-Wideband Fractal Ring Antenna for Biomedical Applications Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-9-28 Ilyas Saleem, Umair Rafique, Shobit Agarwal, Hüseyin Şerif SAVCI, Syed Muzahir Abbas, Subhas Mukhopadhyay
In this paper, an efficient, coplanar waveguide (CPW)-fed printed circular ring fractal ultra-wideband (UWB) antenna is presented for biomedical applications. In UWB technology, short-range wireless communication is possible with low transceiving power, a characteristic that is particularly advantageous in the context of microwave and millimeter-wave (mmWave) medical imaging. In the proposed antenna
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Fabrication of a Flexible RFID Antenna by Using the Novel Environmentally Friendly Additive Process Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-9-27 Pandi Divya, Wen-Hsi Lee
The fabrication of flexible antennas for RFID applications can be divided into subtractive and additive methods. In this study, a low-cost additive method is proposed, which involves printing aluminum paste and utilizing a galvanic replacement reaction. Through a galvanic replacement process, copper sulfate waste effluent was employed to convert the aluminum electrode into a highly conductive copper
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An Asymmetrical Mixed Higher-Order Discontinuous Galerkin Time Domain Method for Electromagnetic Scattering from the Plasma Sheath around a Hypersonic Vehicle Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-9-26 Jirong Guo, Yiping Han
The plasma sheath during reentry of hypersonic vehicle is an unmagnetized and weakly ionized nonuniform plasma flow, which causes radio frequency blackout and strong plasma attenuation of electromagnetic wave. The physical properties of the nonuniform plasma flow were obtained using computational fluid dynamics software with unstructured grids. In this study, a detailed computational model was reconstructed
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A Compact Broad Circularly Polarized Cross-Dipole Antenna with Grounded Parasitic Elements Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-9-21 Dong Yang, Lichao Hao, Lei Wang
A new wideband cross-dipole antenna (CDA) with a circularly polarized (CP) characteristic is proposed in this article. The antenna consists of four L-shaped patches, two modified trapezoid-microstrip lines as an impedance tuner, a pair of vacant-quarter feeding loops as a continuous-phase feeding network, and four grounded inverted L-shaped strips as parasitic elements. It is noticed that the grounded
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Simple Matrix Equation (SME) Method for Pattern Synthesis of Conformal Antenna Array with Arbitrary Architecture Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-9-14 Jie Chen
A novel noniterative method for pattern synthesis of conformal antenna array is put forward. First, a new pattern function formula for general conformal antenna array is derived. Then, according to the new pattern function formula, a new block matrix equation (BME) and a simple matrix equation (SME) are obtained. SME has the same form as the equation of linear array pattern synthesis. The new method
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A Multi-Polarized Reconfigurable Plasma Antenna Array Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-9-11 Zhen Sun, Zhenzhen Zhou, Zhihao Tan, Huafeng Wu, Jiansen Zhao
Research on antenna reconfiguration is important in antenna applications. We present design of a multi-polarized plasma antenna with 40.68 MHz radio frequency (RF) power supplies and several discharge tubes filled with argon (neon) and mercury. Furthermore, self-made regulating circuits among the vibrators are introduced for the antenna array system. It can not only make the length of the dipole controllable
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An Ultrathin Polarization Free Asterick-Shaped Metamaterial Absorber with Quad-Band Characteristics Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-9-5 Raghvenda Kumar Singh, Ashish Gupta, Akash Yadav, Nishchay Gupta, Utkarsh Tyagi
In this paper, a quad-band absorber is proposed and developed, which is exhibiting ultrathin and polarization insensitive behaviour. It has been designed to be operated in S, C, and Ku bands with absorptions peaks at more than 95%. The proposed absorber is implemented on a FR4 glass epoxy laminate with an equivalent electrical thickness of 0.0108 λ0, where λ0 is the wavelength corresponding to the
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A Triband Compact Antenna for Wireless Applications Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-9-2 D. Allin Joe, Thiyagarajan Krishnan
This paper presents the implementation of a triple band microstrip patch antenna based on modified split ring resonator (SRR) and modified complementary split ring resonator (CSRR) as defected ground plane. The antenna is designed in a FR4 substrate of dielectric constant 4.4 with dimensions as 35 mm × 35 mm × 1.6 mm that comprises a total designed antenna volume of 1960 mm3. Multiband operation is
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Advancing 5G Connectivity: A Comprehensive Review of MIMO Antennas for 5G Applications Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-8-31 Poonam Tiwari, Vishant Gahlaut, Meenu Kaushik, Preeti Rani, Anshuman Shastri, Bhupender Singh
The review focuses on the emergence of 5G wireless communication and the need for multiple-input multiple-output antennas to support high-speed communication systems. The article discusses the advantages of MIMO antennas, including increased channel capacity and the ability to focus radio frequency energy on specific users. However, the challenges of creating compact MIMO antennas with ideal isolation
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Compact and Broadband-Balanced Amplifier for a Monolithic Microwave Integrated Circuit Using Lumped Elements Only Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-8-14 Heeje Han, Hongjoon Kim
A flat phase difference across a broad bandwidth is achieved by appropriately combining the positive and negative phase propagation of right-handed (RH) and left-handed (LH) transmission lines (TLs), respectively. Employment of lumped elements provides easy realization of both TLs with the desired frequency passband, characteristic impedance, and phase propagation. The proposed quadrature power divider
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Application of the Finite Difference Parabolic Equation Model in Forestry Remote Telemetry Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-8-1 Qi Guo, Yubin Lan, Xiaoling Deng, Yinliang Diao
In this article, the finite difference parabolic equation (FDPE) method is presented to calculate the propagation loss (PL) for electromagnetic waves (EWs) in the forest environment. The FDPE method is more efficient and convenient than the empirical models and has more advantages on compatibility and accuracy for long-range EWs prediction. The Debye–Cole dual dispersion model is used to simulate the
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An Ultra-Wideband MIMO Bowl-Shaped Monopole Antenna with Sturdy and Simple Construction Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-7-29 Changxian Li, Pin Wen, Xiujuan Lin, Di Wu, Changfei Zhou
Anultra-wideband (UWB) bowl-shaped monopole antenna with a sturdy, simple, and lightweight structure is proposed, and then is used to compose the 3 × 3 multiple input multiple output (MIMO) antenna. The wide bandwidth is determined by the outline of the monopole, which has a quarter wavelength and high-order modes. The inner part of the bowl-shaped monopole is removed for a light weight. The simulated
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Transmit Antenna Selection for Sum-Rate Maximization with Multiclass Scalable Gaussian Process Classification Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-7-29 Xiaofeng Yang
Antenna selection techniques are extensively applied to reduce hardware cost and power consumption in multiple-input multiple-output (MIMO) systems. This paper proposed a low-cost antenna selection method for system sum-rate maximization based on multiclass scalable Gaussian process classification (SGPC) which is capable to perform analytical inference and is scalable for massive data. Simulation results
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On the Experimental Investigation of Bone Fracture Recovery Process Using an Ultra-Wideband Planar Monopole Antenna Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-7-26 Shaik Rizwan, Kanaparthi V. Phani Kumar, Sandeep Kumar Palaniswamy
In this paper, a noninvasive bone fracture monitoring system is developed using a planar monopole antenna. The proposed antenna provides an ultra-wideband response, and its overall size is 18 × 19 × 0.8 mm3. The proposed ultra-wideband monopole (UWM) antenna has a maximum measured gain of 3.77 dBi, and the maximum SAR value for an input power of 18 dBm is less than 1.6 (W/kg) (1 g). A bovine tibia
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Investigation of Planar Isolators for Mutual Coupling Reduction in Two-Dimensional Microstrip Antenna Arrays Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-7-25 Ruowei Yin, Zhipeng Wu
The design of isolators to reduce mutual coupling in large two-dimensional antenna arrays is complex and requires significant computational effort. This work attempts to alleviate this problem by applying different types of planar isolators in different orientations and experimenting first with two-element microstrip antenna arrays. A U-shaped planar transmission line isolator, a U-shaped planar transmission
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Synthesis of Thinned Planar Concentric Circular Antenna Arrays Using a Modified Artificial Bee Colony Algorithm Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-7-22 Yuqi Sun, Jianbang Sun, Lei Ye
The artificial bee colony (ABC) algorithm is a biomimetic optimization algorithm based on the intelligent foraging behavior of a bee colony. It has obvious advantages in dealing with complex nonlinear optimization problems. However, the random neighborhood search leads to the ABC algorithm being good at exploration but neglected in exploitation. Therefore, a modified artificial bee colony algorithm
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A Millimeter-Wave Antipodal Linearly Tapered Slot Antenna Array for 5G Wireless Communication Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-7-21 C. Ni, W. W. Wang, Y. C. Zheng, J. Ding, K. Cao, B. Liu
This paper presents an antipodal linearly tapered slot antenna (ALTSA) array with the newly emerging substrate-integrated coaxial line (SICL) technology. Each element of the proposed array consists of two vertically stacked antipodal tapered slot antennas (TSA) with the inner conductor of a SICL as the shared fin. The vertical symmetry of this radiating element structure significantly suppresses the
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A Computationally Efficient Estimator for the Target Angle, Delay, and Doppler Parameters in Passive Radar Int. J. Antennas Propag. (IF 1.5) Pub Date : 2023-7-18 Jing Yang, Chengcheng Liu, Jie Huang, Dapeng Liu, Ting Ding, Jiandong Zhu, Xia Li
The azimuth, elevation, time delay (TD), and Doppler shift (DS) of the target echo signal are important parameters for target localization in passive radar. In this paper, for the problem of joint estimation of target azimuth, elevation, TD, and DS parameters in passive radar, a computationally efficient estimator is proposed based on segmented coherent integration and uniform circular array (UCA)