Article
Chemistry, Multidisciplinary
Om Prakash Kumar, Tanweer Ali, Pramod Kumar, Pradeep Kumar, Jaume Anguera
Summary: This paper discusses an elliptical ultrawideband (UWB) antenna and a dual-band UWB notch antenna. The UWB antenna achieves a bandwidth of 2.5-11 GHz with a gain of 4.9 dB and a linear phase response. The dual-band UWB notch antenna rejects WLAN and ITU bands from 5.2-5.7 GHz and 7.2-8.5 GHz, respectively, within the impedance bandwidth of 2.5-11 GHz.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Electrical & Electronic
Rahul Kumar Hindustani, Prakash Kumar Panda, Hemanta Kumar Sahu
Summary: This paper presents the bandwidth enhancement of a monopole antenna by hybridizing with cylindrical dielectric resonator elements. Two prototypes are proposed to achieve ultra-wideband response with an omnidirectional radiation pattern, showing good agreement between simulated and experimental results.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Analytical
Om Prakash Kumar, Pramod Kumar, Tanweer Ali, Pradeep Kumar, Shweta Vincent
Summary: This article provides an overview of UWB technology, including its origins, importance, various types of UWB antennas, and the concept of UWB notch antennas with different design approaches.
Article
Computer Science, Interdisciplinary Applications
Tian-Ye Gao, Yong-Chang Jiao, Yi-Xuan Zhang
Summary: A novel compact ultra-broadband-modified fork-shaped printed antenna is efficiently optimized using a self-adaptive hybrid differential evolution (SHDE) algorithm. The proposed antenna structure consists of a modified fork-shaped radiator and a modified ground plane, allowing for a wide operating frequency band. The antenna's dimensions are determined using the SHDE algorithm, resulting in an optimized antenna of small size and broad bandwidth. The measured results of the fabricated antenna align well with the simulated ones, confirming its potential for ultrabroadband transmission technology.
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Ondrej Fiser, Vojtech Hruby, Jan Vrba, Tomas Drizdal, Jan Tesarik, Jan Vrba, David Vrba
Summary: This paper presents a compact UWB bowtie antenna and balun circuit for medical MWI applications. The antenna has low reflection coefficient, high radiation efficiency, and can successfully reconstruct images.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Chungang Zhang, Yongjun Xie, Yangjing Wang, Legen Dai, Liqiang Niu
Summary: A novel miniaturized all-metal magneto-electric monopole (MEM) antenna is proposed in this paper, featuring compact size, wide bandwidth, robustness to surrounding environments, and low loss. Experimental results demonstrate that the antenna operates in the frequency band of 2.5-13 GHz with good radiation performance.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Chandreyee Sarkar, Debatosh Guha, Chandrakanta Kumar
Summary: This work explores a hybrid subarray design that maintains the resonance features of individual elements, resulting in a large radiating aperture and improved gain. Accurate deployment of dielectric resonator antennas in the subarray is discussed, along with a design guideline for specified frequencies. Experimental results show potential applications in high gain and minimal feeding structures.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Review
Chemistry, Analytical
Rajasekhar Nalanagula, Naresh K. Darimireddy, Runa Kumari, Chan-Wang Park, R. Ramana Reddy
Summary: Recent trends in dielectric resonator antenna research include the use of compound and hybrid structures, which have shown interesting and significant features in terms of bandwidth, gain, and circular polarization generation. This critical review discusses the evolution of circularly polarized hybrid dielectric resonator antennas, with a general discussion on circular polarization and DR antennas, along with indications of future challenges and new design ideas. Additionally, state-of-the-art advances and associated design challenges of circularly polarized hybrid DR antennas are discussed, including empirical formulas to find resonance frequency of different hybrid modes.
Article
Computer Science, Information Systems
Seungyong Park, Kyung-Young Jung
Summary: This paper presents a novel compact UWB planar monopole antenna designed for precise indoor positioning system. The antenna operates in the frequency range of 3.1 GHz to 10.8 GHz and exhibits wide bandwidth and omnidirectional radiation patterns. The proposed design meets the requirements for integration with printed circuit boards and offers good performance in complex multipath environments.
Article
Multidisciplinary Sciences
Mohammad Abedian, Mohsen Khalily, Vikrant Singh, Pei Xiao, Rahim Tafazolli, Ahmed A. Kishk
Summary: A new single-fed circularly polarized dielectric resonator antenna is proposed, achieving wideband CP performance and compensating for beam squint errors through specific design and excitation modes.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Electrical & Electronic
Kumar Saurabh Yadav, Gagandeep Bharti, Sudhanshu Verma
Summary: In this paper, a four-port graphene-dielectric resonator based MIMO radiator is designed and investigated. The unique features of the designed radiating structure are: (i) the designed aperture generates circularly polarized (CP) waves between 2.51 and 2.75 THz; (ii) the proposed multiport antenna is structured so that each port radiates in a different direction; and (iii) the reconfigurable property in the designed antenna is achieved by changing the chemical potential of graphene. The proposed antenna performs well between 2.49 and 2.85 THz with approximately 20 dB isolation level among antenna ports. The radiator gain is about 4.5 dBi within the working band. The proposed antenna exhibits stable far-field characteristics and a decent value of the MIMO parameter. These features make the designed radiator suitable for wireless communication systems at THz frequency.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Tian-Wen Chen, Wen-Wen Yang, Yan-Hui Ke, Jian-Xin Chen
Summary: In this letter, a circularly polarized hybrid dielectric resonator antenna (DRA) with wide bandwidth and compact size is proposed. Three CP modes, including cross-slot mode, DR mode, and distributed patch mode, are combined for broadband operation. The cross-slot acts as a radiator and part of the feeding structure, providing the first CP mode and exciting the other two CP modes. The DR and patch within the DR generate two additional CP modes without increasing the size. Through optimization, these three CP modes are combined to achieve a wide operating bandwidth with a compact size of 0.39 x 0.39 x 0.14 ?(3)(0).
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
M. Abedian, M. Khalily, S. Danesh, P. Xiao, Rahim Tafazolli
Summary: The novel dual band-notched printed monopole antenna for UWB applications utilizes slots etched in the patch, L-shaped parasitic strips connected to dielectric resonators, and slots in the ground plane to achieve dual band-notched characteristics. The antenna demonstrates good radiation performance with an ultra-wide impedance bandwidth from 2.54 GHz to 13.64 GHz and two band-notches at 3.22-4.06 GHz and 5.04-6.04 GHz.
2021 15TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP)
(2021)
Article
Engineering, Electrical & Electronic
Zhi-Min Du, Sai-Wai Wong, Rui-Sen Chen, Yin Li, Lin-Ping Feng, Kam-Weng Tam
Summary: In this communication, a novel compact single whip wideband antenna with an improved omnidirectional wideband antenna is proposed. The single whip antenna shows a wide impedance matching performance in a frequency range from 194 to 2124 MHz, while an improved omnidirectional radiation pattern is achieved by co-designing three whipped antennas. The measured performance of the fabricated antenna agrees well with the simulation results.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Zi-Kang Chen, Li Zhang, Zibin Weng, Rui-Yang Li
Summary: This letter presents a wideband wide-beam rectangular di-electric resonator antenna (DRA) using uniaxial anisotropic material for the first time. By tuning the uniaxial permittivity tensor, the radiation from the top wall of the DRA is enhanced and the gain at low elevation angle in the E-plane is improved. The bandwidth is broadened by merging the feed slot mode and the fundamental TE(111)(y) mode. The addition of a grounded substrate and trapezoidal notches on the ground broadens the half-power beamwidth (HPBW) in the H-plane. The measured results show an impedance bandwidth of 35.7% over a band of 2.65-3.8 GHz with HPBWs of at least 250 degrees and 162 degrees in the E-and H-planes, respectively.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
