In this article, the compact wideband elliptically slotted semi-circular patch radiator with the defected ground structure for sub-6 GHz applications is designed and developed. The proposed miniaturized patch radiator offers flexibility in adjusting the band of operation by varying the slot dimensions. The effective size reduction is achieved by comparing different iterations in the process of designing and the size of the regular circular-shaped radiator is reduced into the semi-circular radiating patch. The impact of the variation of effective radius of the semi-circular patch, major-axis radius of the elliptical slot, ground plane length, and feed line width is investigated. The size of the proposed radiator is 23.885 × 23.885 × 1.405 mm. This compact structure manifests the wide bandwidth of 2140 MHz (3.2 GHz-5.34 GHz) with 50% of fractional bandwidth (FBW). The measured results show good agreement with the simulated results. The various parameters validate the utility of the radiator in the C band of super-high frequency (SHF) spectrum and n77 (3.3 GHz-4.2 GHz), n78 (3.3 GHz-3.8 GHz), and n79 (4.4 GHz-5 GHz) bands of the frequency range 1 (FR1) of the sub-6 GHz 5G spectrum.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8429973 | PMC |
| http://dx.doi.org/10.1016/j.heliyon.2021.e07931 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Real-time deformable structure tracking in 3D ultrasound sequences using deformable convolutional layers.
Comput Biol Med
January 2025
University of Lübeck, Ratzeburger Allee 160, Lübeck, 23562, Schleswig-Holstein, Germany. Electronic address:
Ultrasound imaging can provide 3D images of soft tissue structures in real-time without harmful radiation. Due to its high level of availability and low-cost characteristics, it is becoming more and more interesting for therapy guidance purposes like in radiotherapy. However, for usage in radiotherapy a robust and real-time image analysis method is required to be able to track the target during the treatment session.
View Article and Find Full Text PDFX-ray Responsive Antioxidant Drug-Free Hydrogel for Treatment of Radiation Skin Injury.
ACS Appl Mater Interfaces
January 2025
State Key Laboratory of Advanced Medical Materials and Devices, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Key Laboratory of Radiopharmacokinetics for Innovative Drugs, Tianjin Institutes of Health Science, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, P. R. China.
Radiotherapy (RT) is widely applied in tumor therapy, but inevitable side effects, especially for skin radiation injury, are still a fatal problem and life-threatening challenge for tumor patients. The main components of topical radiation protection preparations currently available on the market are antioxidants, such as SOD, which are limited by their unstable activity and short duration of action, making it difficult to achieve the effects of radiation protection and skin radiation damage treatment. Therefore, we designed a drug-free antioxidant hydrogel patch with encapsulated bioactive epidermal growth factor (EGF) for the treatment of radiation skin injury.
View Article and Find Full Text PDFA comparative analysis of image harmonization techniques in mitigating differences in CT acquisition and reconstruction.
Phys Med Biol
January 2025
Radiological Sciences, University of California Los Angeles, 924 Westwood Blvd, Los Angeles, California, 90095, UNITED STATES.
Objective: The study aims to systematically characterize the effect of CT parameter variations on images and lung radiomic and deep features, and to evaluate the ability of different image harmonization methods to mitigate the observed variations.
Approach: A retrospective in-house sinogram dataset of 100 low-dose chest CT scans was reconstructed by varying radiation dose (100%, 25%, 10%) and reconstruction kernels (smooth, medium, sharp). A set of image processing, convolutional neural network (CNNs), and generative adversarial network-based (GANs) methods were trained to harmonize all image conditions to a reference condition (100% dose, medium kernel).
High efficiency high gain low side lobe level and slant polarization monopulse antenna using cavity backed slot coupled patch antenna.
Sci Rep
January 2025
Faculty of Electric and Computer, Malek Ashtar University of Technology, Tehran, Iran.
In this paper, a multilayer monopulse antenna at Ku-Band with high efficiency, high power handling capability, high gain, 45° linear polarization and low sidelobe is presented. A new slot antenna is proposed as a radiating element based on a cavity-backed slot-coupled patch antenna. Using an enclosed cavity structure reduces coupling between antenna elements, thus increasing the antenna efficiency.
View Article and Find Full Text PDFA vision-language foundation model for precision oncology.
Nature
January 2025
Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA, USA.
Clinical decision-making is driven by multimodal data, including clinical notes and pathological characteristics. Artificial intelligence approaches that can effectively integrate multimodal data hold significant promise in advancing clinical care. However, the scarcity of well-annotated multimodal datasets in clinical settings has hindered the development of useful models.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!