Article
Engineering, Electrical & Electronic
Qian Zou, Zhen Gu, Rensheng Xie, Zhongxiang Zhang, Hualiang Zhang, Jun Ding
Summary: In this work, a wideband nonresonant metasurface is proposed to enhance the gain of an ultra-wideband double slot Vivaldi antenna (DSVA). The slots etched on both sides of the ground plane improve the current distribution. The nonresonant metasurface composed of WiFi-shaped unit cells can bend the outgoing wave to the end-fire direction and maintain a high refractive index in the operating bandwidth.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
(2023)
Article
Multidisciplinary Sciences
Zhang Chao, Zhao Zitong, Xiao Pei, Yu Jie, Liu Zhu, Li Gaosheng
Summary: This paper proposes a step-by-step design procedure for obtaining independent dual band-notch performance in a tunable dual band-notched UWB antenna. The proposed antenna consists of a semicircle ring-like radiating patch, an elliptical-shaped slot, double split ring resonators, and a defected ground structure (DGS). By loading varactor diodes and changing the reverse bias voltage, a wider band-notched tuning range can be achieved. The experimental results show efficient suppression of narrow-band interference signals and improved antenna operating performance. The proposed antenna has a simple structure, low profile, compact size, and extensive independent tunable range.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Electrical & Electronic
Zichao Zheng, Fangjun Chen, Ziyu Pan, Feng Xu
Summary: In this study, a high-gain and low-profile tapered slot antenna with a composite patch made of ellipse and spoof surface plasmon polaritons (sSPPs) structures is proposed. The fabricated antenna achieves a wide operating bandwidth of 82.3% (5-12 GHz) and shows good directivity and end-fire radiation performance.
ELECTRONICS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
P. Prasanna Kumar, Prerna Saxena
Summary: This paper proposes a novel high gain antipodal tapered slot antenna for high resolution imaging applications in the frequency range of 20-40 GHz. By designing the radiating fins of the antenna as elliptical and circular shape for inner and outer tapers respectively, and incorporating an isosceles trapezoid-shaped dielectric lens and anisotropic left-handed metamaterial unit cells, the antenna achieves high gain and stable radiation pattern.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2022)
Article
Computer Science, Interdisciplinary Applications
Xiaodong Huang, Jinru Cao, Weiye Zhong, Xiuhua Jin
Summary: By introducing a V-shaped air slot in the antenna substrate, the peak gain of traditional Vivaldi antennas can be significantly improved without increasing size or adding extra components. The air slot helps to distribute electromagnetic waves more evenly, enhancing peak gain particularly at higher frequencies. Experimental results demonstrate that the combination of air slot and removal of back substrate can effectively enhance antenna performance.
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
(2021)
Article
Computer Science, Information Systems
Jia-Cheng Liang, Cheng-Nan Chiu, Tsung-Ching Lin, Chih-Hung Lee
Summary: This paper presents a novel ultrawideband antenna that exhibits high gain and circular polarization. The antenna consists of four sophisticated antipodal Vivaldi antennas and an ultrawideband feeding network. The antenna achieves circular polarization that can be easily switched between right-handed and left-handed. The experimental results demonstrate that the antenna has a wide impedance-matching bandwidth and stable gain, making it suitable for applications in the Ku, K, and Ka frequency bands.
Article
Chemistry, Analytical
Jiwan Ghimire, Dong-You Choi
Summary: This paper proposes double slot podal and antipodal ultra-wideband microstrip antennas for a fluid property measurement system. The performance verification and comparison of the antennas are discussed, along with their impedance bandwidth and gain.
Article
Engineering, Electrical & Electronic
Wanli Li, Jun Lei, Weiwen Li
Summary: In a Vivaldi antenna, a symmetrical double-sided structure is introduced to reduce the lower-side frequency. Multiple transverse and longitudinal slots loaded into the redundant conductor layer of the Vivaldi structure can stimulate resonant modes at the higher frequency end, further broadening the antenna bandwidth towards high frequencies. Meanwhile, impedance matching slots are introduced into the conductor layer on the feed side to achieve ultra-wideband (UWB) antenna. The overall size of the final antenna is 23.5 mm x 30.0 mm x 2.4 mm, while the relative bandwidth (S-11 < -10 dB) reaches 142% (2.49-14.78 GHz). This miniaturized UWB antenna has similar directional patterns in the operating band, with an average gain of 4.82 dB.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Xinrong Shi, Yunfei Cao, Yougen Hu, Xudong Luo, Hua Yang, Liang Hua Ye
Summary: The proposed ultrawideband antipodal Vivaldi antenna features various design elements such as an elliptical-shaped director, metamaterial inspired structure, and symmetrically embedded rectangular slits, achieving high gain and good impedance matching over an extremely wide frequency band.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2021)
Article
Engineering, Electrical & Electronic
C. Ni, W. W. Wang, Y. C. Zheng, J. Ding, K. Cao, B. Liu
Summary: This paper presents an antipodal linearly tapered slot antenna array with the substrate-integrated coaxial line (SICL) technology. The array consists of two vertically stacked antipodal tapered slot antennas with the inner conductor of a SICL as the shared fin. The proposed scheme shows good performance in potential 5G millimeter-wave applications.
INTERNATIONAL JOURNAL OF ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
P. Prasanna Kumar, Prerna Saxena
Summary: The proposed antenna utilizes a novel metamaterial design to cover the 20-40 GHz frequency range, demonstrating high gain and stable radiation pattern in a compact size. It is suitable for wideband millimeter wave imaging applications, specifically for detecting concealed weapons and structural defects.
JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES
(2022)
Article
Engineering, Electrical & Electronic
Sahar Saleh, Widad Ismail, Intan Sorfina Zainal Abidin, Moh'd Haizal Jamaluddin, Mohammed H. Bataineh, Asem S. Al-Zoubi
Summary: A new theory called Vivaldi nonuniform slot profile antenna (VNSPA) is proposed to reduce the size of the predesigned compact ultrawide band (UWB) Vivaldi-tapered slot antenna (VTSA) without compromising its performance. The proposed antenna achieves a significant size reduction and maintains similar matching and bandwidth performance compared to VTSA. Experimental results validate the effectiveness of the new theory.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Computer Science, Information Systems
Mohamad Yafik Ihtisyam Yazid, Mohd Hafiz Baharuddin, Mohammad Shahidul Islam, Mohammad Tariqul Islam, Ali F. Almutairi
Summary: This paper presents the development of an antipodal Vivaldi antenna with a fractal slot, which has potential applications in multisensory systems for head stroke imaging. The fractal slot is utilized to enhance the antenna's directivity, bandwidth, and gain. The research aims to design and optimize a compact Vivaldi antenna with the fractal slot for detecting stroke in the human head. The proposed antenna achieves a wide bandwidth of 1.44 GHz (2.35 GHz to 3.79 GHz) and a maximum gain of 7.35 dBi, and it meets the requirements for microwave imaging procedures.
Article
Computer Science, Information Systems
Mohammad Mahdi Honari, Mohammad Saeid Ghaffarian, Rashid Mirzavand
Summary: This paper introduces a miniaturized ultra-wideband antipodal tapered slot antenna with exponential strip arms, achieving a reduction in size, increase in bandwidth, and peak gain over 1 dBi across the entire impedance bandwidth.
Article
Engineering, Multidisciplinary
Sahar Saleh, Widad Ismail, Intan Sorfina Zainal Abidin, Moh'd Haizal Jamaluddin, Mohammed H. Bataineh, Asem S. Alzoubi
Summary: By changing the transition shape from Microstrip to Slot line, a compact UWB Vivaldi Tapered Slot Antenna design was achieved. Among the four models analyzed, Model D exhibited significant size reduction and improved performance, with hardware measurements confirming the validity of the proposed antennas.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
