Article
Engineering, Electrical & Electronic
Tao Zhang, Zhangming Zhu, Xujun Ma, Haiyang Xia, Lianming Li, Tie Jun Cui
Summary: The study introduces an integrated tapered array antenna with series feed at W-band. Novel CPW feeding structure and wire-bonding technique were employed to enhance interconnection reliability and reduce fabrication cost for the single-layer PCB antenna design. The proposed antenna achieved wideband-impedance feature and was successfully used for human vital sign detection with a 100 GHz CMOS radar transceiver.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Astronomy & Astrophysics
C. Turkmen, E. Alkin, M. Secmen
Summary: This study introduces an omnidirectional and circularly polarized transceiver antenna for telemetry, tracking, and command applications in the space segment of satellite communication. The antenna design includes waveguide structures and rotationally symmetric slotted arrays, utilizing waveguides and metallic disks to achieve omnidirectionality and circular polarization.
Article
Chemistry, Analytical
Liang Liu, Yang Yang, Chuan Yu, Shifeng Li, Hao Wu, Limin Sun, Fanbao Meng
Summary: A W-band slot array antenna based on a substrate integrated waveguide (SIW) for microwave power transmission (MPT) is proposed in this paper. The compact arrangement of the antenna elements improves the aperture efficiency and enables easy integration into large-scale arrays. Test results demonstrate that the antenna performs well and can be applied as a rectenna in MPT systems.
Article
Engineering, Electrical & Electronic
Zhenxiang Yi, Chuxi Wang
Summary: A noninvasive glucose sensor using defective ground-structure (DGS) coplanar waveguide (CPW) transmission line is proposed, which operates as a microwave resonator affected by glucose concentration. The fabricated DGS sensor with a size of 22 x 12 mm and a 3-D printed sample holder demonstrates a frequency sensitivity of about 1.852 x 10(-5) GHz/(mg/dL) and an amplitude sensitivity close to 6.54 x 10(-4) dB/(mg/dL). By repeating the array structure five times, the sensitivity is improved to a frequency sensitivity of 3.9 x 10(-6) GHz/(mg/dL) and an amplitude sensitivity of 5 x 10(-3) dB/(mg/dL). The proposed sensor may have promising applications in human health monitoring in the future.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Mohammad Hossein Amini, Zahra Davoodi-Rad, Amirhossein Ghasemi, Mohsen Khaliliy, Alireza Mallahzadeh
Summary: This article investigates the current density distribution and kinetic inductance in superconducting coplanar waveguides (SCPWs). By mapping CPW to parallel plates and utilizing Green's function and London's second equation, an integral equation is formed to obtain the current density distribution. The procedure is verified using COMSOL Multiphysics software, and the results show that as the gap is reduced, the SCPW experiences a significant increase in current density especially at the edges. The article also evaluates the kinetic inductance of CPWs with different aspect ratios, finding that the kinetic inductance decreases as the ratio increases.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2022)
Article
Computer Science, Information Systems
Xingye Fan, Ruozhou Li, Jing Yan, Yuming Fang, Ying Yu
Summary: This study demonstrates a tunable stepped-impedance resonator using liquid crystal, with two resonant frequencies that can be continuously tuned by external voltages. The device achieves wide tunable ranges at a low driving voltage, showing good agreement with simulation results. It also has low insertion loss and high return losses, providing a new protocol for tunable frequency in communication systems.
FRONTIERS OF INFORMATION TECHNOLOGY & ELECTRONIC ENGINEERING
(2021)
Article
Telecommunications
Abhilash S. Vasu, T. K. Sreeja
Summary: An innovative magnetodielectric nanocomposite antenna is proposed to enhance the antenna parameters of a monopole radiator by coplanar waveguide (CPW) feeding. This antenna works in triband, covering the frequency band in WLAN, WiMAX, and 5G. It incorporates three radiating elements with a compact design and uses magnetodielectric nanocomposite materials to achieve good impedance bandwidth and radiation characteristics.
WIRELESS PERSONAL COMMUNICATIONS
(2023)
Article
Physics, Multidisciplinary
Md Mottahir Alam, Rezaul Azim, Ibrahim Mustafa Mehedi, Asif Irshad Khan
Summary: This paper presents a CPW-fed small antenna designed to operate over an ultra-wide frequency band for portable communication devices. The antenna features a simple design, small size, good gain and efficiency, stable radiation characteristics, and good time-domain behavior, making it a potential candidate for use in portable communication devices.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Srinivas Guthi, Vakula Damera
Summary: This paper presents the design of a single layer planar antenna for high gain and broadband circular polarization. The antenna consists of 3 x 3 arrays of 45 degrees rotated slot-loaded square patches on one side of the substrate, and a stub loaded CPW fed aperture on the other side to excite the metasurface antenna. The size adjustment of the patches and slots achieves the desired broadband bandwidth and high gain.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
(2022)
Article
Computer Science, Information Systems
Yuyu Zhao, Jun Dong, Fan Yin, Xinchun Fang, Ke Xiao
Summary: This article introduces a novel transition between coplanar waveguide (CPW) and air-filled rectangular waveguide (RWG), which broadens the bandwidth. The design does not require intermediate transition or air-bridges, and the planar circuit can be designed with high- and low-permittivity materials, offering more benefits in both PCB and MMIC design. Measurement results agree well with simulation results, validating the feasibility of this design.
Article
Engineering, Electrical & Electronic
Zhaorui Zang, Ashraf Uz Zaman, Jian Yang
Summary: This article proposes a series-fed, single-layer dual-circularly polarized slot array antenna that is fed by a stepped ridge gap waveguide (RGW) at the 77-GHz band. The antenna is capable of generating dual-circularly polarized waves, making it suitable for next-generation polarimetric radar in automotive applications. The antenna consists of eight columns of linear arrays and two feeding ports for exciting the slots. The design process and measured results are presented in this article. The measured results demonstrate that the achieved gain of the proposed antenna is above 27.3 dBi, with an axial ratio of about 2 dB over the frequency range of 76-79 GHz, exhibiting dual-CP patterns. The S-11 and S-22 values for the proposed antenna are below -10 dB, and the measured port isolation is above 17.5 dB.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Multidisciplinary Sciences
Sarosh Ahmad, Nabil Cherif, Salman Naseer, Umer Ijaz, Yanal S. Faouri, Adnan Ghaffar, Mousa Hussein
Summary: This article presents the design of a compact circularly polarized wideband antenna array based on substrate integrated waveguide technology. The antenna covers a frequency range of 2.15 GHz to 3.63 GHz, with a working band at 2.45 GHz and a 3 dB bandwidth from 2.19 GHz to 2.51 GHz. The simulation and experimental results confirm the suitability of the antenna for ISM band applications.
Article
Engineering, Electrical & Electronic
Jiang-Qiao Ding, Jie Hu, Sheng-Cai Shi
Summary: Two coplanar waveguide bandpass filters working at 350 GHz are designed based on quarter-wavelength stepped impedance resonators, using superconducting niobium film patterning technology. The study indicates that these filters can be applied in future terahertz astronomical spectrometer.
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY
(2021)
Article
Computer Science, Interdisciplinary Applications
Liangyu Sun, Weixing Sheng, Binyun Yan, Jie Cui
Summary: This article designs a novel dual circularly polarized slot antenna with wideband characteristics. By combining the quarter-wavelength patch mode and half-wavelength slot mode and using a specially designed ground plane and slots, the antenna achieves good circular polarization and isolation performance. The antenna has a wide impedance bandwidth, axial ratio bandwidth, and isolation bandwidth, and the prototype is more compact with better gain performance.
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Anh-Ngoc Nguyen, Viet Hoang Le, Nghia Nguyen-Trong, Mohsen Radfar, Amir Ebrahimi, Khoa Phan, Aniruddha Desai
Summary: The proposed single-layered slot antenna system operating at 5.8 GHz aims for in-band full duplex applications without the need for a coupler. High isolation is achieved by strong separation of even- and odd-mode feeds and the use of microstrip-coupled coplanar waveguides. The antenna system also boasts improved isolation with the inclusion of a lumped capacitor and has measured gains of 5.4 and 5.8 dBi at 5.8 GHz.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
