Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
A small zero-order resonant antenna based on the composite right-left-handed (CRLH) principle is designed and fabricated without metallic vias at 30 GHz to have patch-like radiation. The mirror images of two CRLH structures are connected to design the antenna without via holes. The equivalent circuit, parameter extraction, and dispersion diagram are studied to analyze the characteristics of the CRLH antenna. The antenna was fabricated and experimentally verified. The measured realized gain of the antenna is 5.35 dBi at 30 GHz. The designed antenna is free of spurious resonance over a band width of 10 GHz. A passive beamforming array is designed using the proposed CRLH antenna and the Butler matrix. A substrate integrated waveguide is used to implement the Butler matrix. The CRLH antennas are connected to four outputs of a 4×4 Butler matrix. The scanning angles are 12∘, -68∘, 64∘, and -11∘ for excitations from port 1 to port 4 of the 4×4 Butler matrix feeding the CRLH antenna.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10535399 | PMC |
| http://dx.doi.org/10.3390/s23187973 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Medial Osteochondral Defect Drives Matrix and Cell Pathology in Compartment-Matched Meniscus.
J Orthop Res
August 2025
Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York, USA.
Patients with cartilage defects often experience increased meniscal degeneration. It remains unclear whether meniscal damage occurs concurrently with cartilage injury or due to later joint pathology. Limited data exists on how isolated cartilage injuries affect meniscal structure and degeneration.
View Article and Find Full Text PDFA novel 3D hemispherical reconfigurable antenna with a switchable radiation pattern using Butler matrix.
Sci Rep
August 2025
Department of Electrical Engineering, College of Engineering, King Saud University, Riyadh, 12372, Saudi Arabia.
In this paper, we present a compact three-dimensional hemispherical reconfigurable antenna system designed for 5G networks operating around 3.6 GHz. The proposed architecture combines a four-element Vivaldi antenna array with a passive [Formula: see text] Butler matrix to enable electronically switchable beams in three main directions: upward, rightward, and backward.
View Article and Find Full Text PDFUltra-Low Operating Voltage Memristors Based on Plating/Stripping Reactions.
Adv Sci (Weinh)
July 2025
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.
Current memristor technologies remain limited by instability, high operating voltage, and low switching ratio, primarily due to stochastic filament formation and defect migration. Here, a fundamentally different electrochemical mechanism is proposed through the development of a plating/stripping memristor (PSM) featuring stable, low-voltage, and bio-inspired conductance switching. Constructed with Zn/Cu electrodes and a deep eutectic gel electrolyte (DEGE), the PSM accurately emulates spike-rate-dependent plasticity and long-term synaptic dynamics.
View Article and Find Full Text PDFMetformin for patients with metastatic prostate cancer starting androgen deprivation therapy: a randomised phase 3 trial of the STAMPEDE platform protocol.
Lancet Oncol
August 2025
Division of Cancer Sciences, University of Manchester, Manchester, UK; The Christie Hospital NHS Foundation Trust, Manchester, UK; Department of Urology, Salford Royal Hospital, Manchester, UK.
Article Synopsis
- Metformin, an anti-diabetic drug, is being studied for its potential anticancer effects, particularly in metastatic hormone-sensitive prostate cancer, where it may also help counteract issues related to androgen-deprivation therapy (ADT).
- The STAMPEDE trial involved patients with high-risk prostate cancer across the UK and Switzerland, comparing standard treatment with and without metformin for non-diabetic patients who were in good health.
- Patients were randomly assigned to receive either standard care or standard care plus metformin, with the main goal of assessing overall survival in those treated with the additional medication.
Identification of Functional Cellular Markers Related to Human Health, Frailty and Chronological Age.
Aging Cell
September 2025
RESTORE Research Center, Université de Toulouse. INSERM 1301, CNRS 5070, EFS, ENVT, Toulouse, France.
Aging leads to a decline in physiological reserves, an increase in age-related diseases, reduced functional ability and a shortened healthspan. While molecular markers of chronological aging exist, their link to general health and intrinsic capacity (IC), a composite measure of physical and mental capacities, remains unclear. This study integrates the WHO's Healthy Aging framework with geroscience to explore fibroblasts as indicators of health.
View Article and Find Full Text PDF