Article
Engineering, Electrical & Electronic
Surajit Kundu, Ayan Chatterjee
Summary: This paper proposes a small bulb shaped super wideband antenna with compact dimensions and wide spectrum coverage, suitable for various communication and wireless applications.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2022)
Article
Telecommunications
Vijay Sharma, Gunaram, J. K. Deegwal, Dhirendra Mathur
Summary: This study presents the design of a compact offset elliptical ring microstrip patch antenna for super wideband applications, which exhibits high impedance bandwidth, low profile, and stable omnidirectional behavior. The offered antenna has a high gain, closely matching measured results with simulated results, making it suitable for a variety of practical applications.
WIRELESS PERSONAL COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Amar D. Chaudhari, K. P. Ray
Summary: This article presents a new configuration of a multiple-input-multiple-output (MIMO) antenna system for super-wideband response, with directional beams, high isolation, stable gain, and efficiency. The main features of the antenna system are four directive beams and a simple compact design, suitable for applications in large-capacity and high-speed communication systems.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Jonas Kornprobst, Thomas J. Mittermaier, Raimund A. M. Mauermayer, Gerhard F. Hamberger, Matthias G. Ehrnsperger, Bernhard Lehmeyer, Michel T. Ivrlac, Ulrik Imberg, Thomas F. Eibert, Josef A. Nossek
Summary: Two novel decoupling and matching networks (DMNs) in microstrip technology designed for three-element uniform circular arrays (UCAs) were investigated and compared to a conventional DMN approach. The new designs showed excellent decoupling and matching performance, obtaining a broader bandwidth by introducing additional degrees of freedom for impedance matching at different frequencies.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Said Douhi, Adil Eddiai, Sudipta Das, Boddapati Taraka Phani Madhav, Mounir Meddad, Omar Cherkaoui, M'hammed Mazroui
Summary: This article proposes a compact super-wideband flexible textile antenna with a simple geometry and wide frequency range. The performance of the antenna is demonstrated through measurements and simulations, confirming its suitability for various applications.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Computer Science, Information Systems
Andrea Michel, Rajesh Kumar Singh, Paolo Nepa
Summary: This paper presents a wideband, low-profile, 3D automotive antenna for LTE and 5G applications. The antenna is compact, lightweight, and capable of operating across the entire LTE/5G band. Simulated performance matches well with measurement results.
Article
Computer Science, Interdisciplinary Applications
Shobit Agarwal, Ashwani Sharma, Ignacio J. Garcia Zuazola, William G. Whittow
Summary: This article presents a miniaturized 3D super wideband antenna with filtering capabilities. It modifies a conventional rectangular patch antenna by truncating its corners and utilizing a trapezoidal shaped partial ground plane. The antenna achieves a wide impedance bandwidth of 17.55 GHz and rejects interference from three communication bands. The design is miniaturized compared to previous literature and has been validated through simulations and measurements.
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Mohammadreza Rohaninezhad, Meysam Jalali Asadabadi, Changiz Ghobadi, Javad Nourinia
Summary: In this study, a transparent super wideband CPW antenna was designed and built with the combination of solar panels for use in wireless communication equipment and systems that require mobile power. The antenna demonstrated high transparency and conductivity, and performed well in terms of frequency range and performance parameters testing.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Electrical & Electronic
Smarajit Maity, Tapas Tewary, Surajit Mukherjee, Avisankar Roy, P. P. Sarkar, Sunandan Bhunia
Summary: A super wideband hybrid microstrip patch antenna with high gain is proposed in this research. The antenna exhibits an impedance bandwidth of more than 38 GHz and a peak gain of 7.4 dBi. It can be used for various frequency bands including S band, UWB band, X band, Ku band, K band, and 5G technology band.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2022)
Article
Computer Science, Information Systems
M. Ayyappan, Pragati Patel
Summary: A novel compact triple elliptical monopole antenna with super wideband characteristics has been designed. By optimizing the defect ground structure and the patch structure of the antenna, enhanced impedance bandwidth is achieved. The antenna has a wide frequency band coverage and can be used for a wide range of applications including 5G and IoT.
Article
Chemistry, Multidisciplinary
Tiago Varum, Joao Caiado, Joao N. Matos
Summary: Modern communication systems require high bandwidth due to the integration of internet of things networks, leading to new interests in millimeter waves. Logarithmic architecture can be used in the design of microstrip antenna arrays to achieve high gain and ultra-wide bandwidth.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Electrical & Electronic
Yantao Yu, Shenshen Mao, Meng Li, Danting He
Summary: This paper proposes a novel compact MIMO antenna for UWB applications with enhanced port isolation. The antenna demonstrates good impedance matching and high port isolation over the entire UWB band, and exhibits good spatial diversity characteristics.
APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Ankit Sharma, Deepak Gangwar, Ravi Prakash Singh, Rashi Solanki, Saurabh Rajpoot, Binod Kumar Kanaujia, Satya P. Singh, Aime Lay-Ekuakille
Summary: This paper presents a hexagon-shaped wideband circularly polarized antenna designed using characteristic mode analysis. The design is completed in two stages to achieve circular polarization in both high and low-frequency bands. By utilizing CMA to understand the antenna's different modes and their contribution to CP radiation, a wideband CP antenna is successfully achieved.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Engineering, Electrical & Electronic
Chunling Chen
Summary: This article presents a design of a high out-of-band suppressed compact wideband filtering dipole antenna with a dual-mode compressed parasitic folded dipole, achieving a wide bandwidth and high out-of-band suppression level.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Sanjukta Mandal, Sujit Kumar Mandal, Ashis Kumar Mal, Rajat Mahapatra
Summary: In this article, a novel miniaturized CPW fed on-chip antenna with enhanced bandwidth and gain for super wideband (SWB) application is proposed. The introduction of an air cavity beneath the patch improves the antenna's bandwidth and gain, offering stable radiation pattern and maximum gain over the entire wide impedance bandwidth. The fabricated prototype shows good agreement between simulated and experimental results.
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Vikrant Kaim, Neeta Singh, Binod Kumar Kanaujia, Ladislau Matekovits, Karu P. Esselle, Karumudi Rambabu
Summary: This study presents a low RF power receiver that enables wireless power transfer at 2.45 and 5.8 GHz, converting the received power into DC power. Four dual-branch rectifiers were used in power transfer experiments, and the results showed that the RF-DC total power conversion efficiency was 0.51/1.64 mW at 1 W power level.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Review
Computer Science, Information Systems
Abu Sadat Md. Sayem, Ali Lalbakhsh, Karu P. Esselle, Gholamhosein Moloudian, John L. Buckley, Roy B. V. B. Simorangkir
Summary: Water antennas have become popular due to the excellent electrical and mechanical properties of water. Pure water is a high permittivity dielectric liquid with low electrical conductivity, while salt-water has good electrical conductivity which can be controlled by adjusting the salt content. Both pure water and salt water have excellent optical transparency, liquidity, flexibility, and availability, making them ideal materials for antenna manufacturing. This review paper highlights the state-of-the-art designs, challenges, and potential applications of water-filled antennas.
Article
Chemistry, Analytical
Khaled M. M. Morshed, Debabrata K. K. Karmokar, Karu P. P. Esselle
Summary: This article presents two novel antennas for mobile devices, allowing them to access both licensed shared access (LSA) bands and all the long-term evolution (LTE) bands, as well as several other bands. These antennas do not require passive or active lumped elements for input impedance matching. One of the antennas is dual-band, while the other is a wideband antenna. Both antennas show high efficiency in all the mentioned bands and nearly omnidirectional radiation patterns in the mid band. The wideband antenna has been fabricated and tested, demonstrating good wideband performance in a wide frequency range.
Article
Chemistry, Analytical
Madiha Farasat, Dushmantha Thalakotuna, Yang Yang, Zhonghao Hu, Karu Esselle
Summary: 5G requires more connected devices, which is achieved by using multiband antennas in base stations. However, multiband antennas face the challenge of pattern distortions due to surrounding antenna element structures. This study proposes a novel approach to reduce pattern distortion in the lower frequency band by integrating a common-mode suppression circuit with the impedance matching network of the high-band antenna element.
Article
Chemistry, Analytical
Sujan Shrestha, Syed Muzahir Abbas, Mohsen Asadnia, Karu P. Esselle
Summary: A three-dimensional printed wideband prototype (WBP) was proposed to enhance the horn feed source by generating a more uniform phase distribution. The phase variation without the WBP was 163.65°, which decreased to 19.68° after placing the WBP above the feed horn aperture at a ?/2 distance.
Article
Engineering, Electrical & Electronic
Foez Ahmed, Muhammad U. Afzal, Dushmantha N. Thalakotuna, Karu P. Esselle
Summary: This article proposes a new dual-band metascreen (DBM) for polarization independent near-field phase corrections. The DBM is based on quad-layer phase-shifting cells with interlaced slot patterns to cater to different operating frequencies. The article also proposes a dual-band directive antenna using a dual-band metallic, partially reflective surface. Experimental tests of a prototype show excellent radiation performance and a low-profile, lightweight design.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Chemistry, Analytical
Khaled M. Morshed, Debabrata K. Karmokar, Karu P. Esselle, Ladislau Matekovits
Summary: In this paper, a one-dimensional pattern reconfigurable leaky-wave antenna (LWA) was developed for wireless terminals. By selecting the feed points, the antenna can switch the beam in three different directions. Two of these antennas were placed at right angles to achieve two-directional beam switching, which allows the beam to point in five different directions.
Article
Chemistry, Analytical
Khushboo Singh, Mondeep Saikia, Karthick Thiyagarajan, Dushmantha Thalakotuna, Karu Esselle, Sarath Kodagoda
Summary: This paper proposes a reconfigurable intelligent surface (RIS) that can dynamically switch the transmission and reflection phase of electromagnetic waves, realize dual-beam or quad-beam, and convert the polarization of the transmitted beam. When integrated with sensing elements, it can perform joint detection and communication functions in future wireless sensor networks. The capabilities of the RIS in manipulating the dynamic field scattering are validated through experiments and simulations.
Article
Chemistry, Analytical
Arslan Kiyani, Mohsen Asadnia, Syed Muzahir Abbas, Karu P. Esselle, Abdelhady Mahmoud
Summary: This article introduces an application of a grounded substrate-based metasurface for hosting dielectric resonators (DRs) to achieve a wide dual-band circularly polarized (CP) operation. The design utilizes a rectangular DR structure and a square-slotted metasurface positioned above a grounded substrate. By adjusting the feed angle and ensuring good matching with the metasurface, the antenna achieves significant performance improvement, including an 88.1% impedance bandwidth and overlapping 3-dB axial ratio bandwidths.
Article
Computer Science, Information Systems
Khushboo Singh, Karu Esselle
Summary: This study proposes a method for managing sidelobe levels in metasurface-driven beam-steering antennas using an equivalent model and an evolutionary optimization algorithm based on the cross-entropy method. The proposed method effectively suppresses sidelobes and improves the performance of beam-steering antennas by optimizing patch dimensions and feed array amplitudes.
Review
Computer Science, Information Systems
Foez Ahmed, Khushboo Singh, Karu P. Esselle
Summary: This article reviews the recent advancements in passive beam steering antennas, aiming to achieve interference-free, power-efficient, and highly secure wireless communication. The concept of metamaterials and metasurfaces is introduced, along with the mathematics behind beam steering metasurface design. Reflect and transmit array antennas are discussed to provide a comprehensive understanding of beam scanning principles. Furthermore, intuitive design examples and three categories of the latest beam scanning antenna systems are presented for analysis.
Proceedings Paper
Engineering, Electrical & Electronic
Karu P. Esselle, D. N. Thalakotuna
Summary: In many modern wireless radio systems, high antenna gains are required for the transmitting and receiving terminals, often achieved through highly directive antenna beams. This invited presentation aims to provide an overview of currently used and emerging methods for continuously steering such antenna beams, catering to a non-specialist audience of electrical and electronic engineers in relevant industries.
2023 IEEE RADIO AND ANTENNA DAYS OF THE INDIAN OCEAN, RADIO
(2023)
Article
Engineering, Electrical & Electronic
Foez Ahmed, Touseef Hayat, Muhammad U. Afzal, Shiyu Zhang, Karu P. Esselle, William G. Whittow
Summary: This article introduces highly RF transparent phase gradient synthetic metasurfaces made of sub-wavelength-sized 3D printable meta-atoms with tailored permittivity. These meta-atoms are designed using a dielectric block material with air and metallic inclusions to achieve a complete phase range. A two-dimensional array of meta-atoms forms a metasurface, which can be used for phase-shifting structures. These metasurfaces can manipulate RF waves by introducing progressive phase delay into array elements. The proposed meta-atoms are employed to create highly RF transparent phase-gradient metal-dielectric composite metasurfaces (MDCMs) operating at 11 GHz. These MDCMs can be implemented through 3D printed technology using low-cost thermoplastics or polymers with composite filaments and minimal human intervention. The antenna system provides a peak directivity of 19.9 dBi with a maximum conical scanning angle of 114 degrees and a directivity variation of less than 3 dB.
IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Foez Ahmed, Khushboo Singh, Karu P. Esselle, Dushmantha Thalakotuna
Summary: This paper reviews the potential of near-field metallic metasurfaces (MMs) in developing high-performance antenna systems. The proposed MMs, based on near-field phase translation, are used to enhance gain and steer the beam in a large 3D conical space. The dielectric-free, low-cost, and lightweight properties of MMs make them suitable for usage in strict operating conditions.
2023 5TH AUSTRALIAN MICROWAVE SYMPOSIUM, AMS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Touseef Hayat, Muhammad U. Afzal, Foez Ahmed, Karu P. Esselle
Summary: This paper demonstrates the customization ability of additive manufacturing (AM) by designing three phase varying superstrates (PVS) for CRCAs using different fabrication approaches. The uneven transmission through PVS remarkably improves the aperture phase error of CRCAs, achieving high-directivity and wide bandwidth.
2022 16TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP)
(2022)
