Results 31 to 40 of about 185,245 (299)
IET Microwaves, Antennas & Propagation, 2022 A single‐beam full‐space scanning leaky‐wave antenna with high‐efficiency based on spoof surface plasmon polaritons (SSPPs) is presented in this paper.
Huan Jiang +4 more
doaj +1 more source
Circularly-polarised cavity-backed wearable antenna in SIW technology [PDF]
, 2017 This study presents a circularly-polarised substrate-integrated waveguide (SIW) antenna implemented using a textile substrate and operating at 2.45GHz, in the industrial, scientific, and medical frequency band.
Agneessens, Sam +3 more
core +1 more source
ON THE EFFICIENCY AND GAIN OF ANTENNAS [PDF]
Progress In Electromagnetics Research, 2013 The fundamental limits of the gain and e±ciency of an antenna are explored. These are very important quantities for, e.g., superdirective arrays. The antenna is in this paper con¯ned in a sphere and all of the currents are assumed to run in a material with a given conductivity.
openaire +1 more source
Analysis of the Electrical Performance of Multituned VLF Thirteen-Tower Umbrella Antennas
International Journal of Antennas and Propagation, 2022 The concept of multituned thirteen-tower umbrella antenna is developed in this study to address the problem that increasing the power capacity of a single-tuned VLF transmitting antenna leads to a decrease in self-resonance.
Xiangyu Xu, Hui Xie, Zhiqing Luo, Lu Wan
doaj +1 more source
A 16-Channel Dipole Antenna Array for Human Head Magnetic Resonance Imaging at 10.5 Tesla
Sensors, 2021 For ultra-high field and frequency (UHF) magnetic resonance imaging (MRI), the associated short wavelengths in biological tissues leads to penetration and homogeneity issues at 10.5 tesla (T) and require antenna transmit arrays for efficiently generated ...
Myung Kyun Woo +7 more
doaj +1 more source
Energy efficiency-spectral efficiency trade-off of transmit antenna selection [PDF]
, 2014 We investigate the energy efficiency-spectral efficiency (EE-SE) trade-off of transmit antenna selection/maximum ratio combining (TAS) scheme. A realistic power consumption model (PCM) is considered, and it is shown that using TAS can provide significant
Brante, Glauber +4 more
core +1 more source
Switch-Reconfigurable Metal Rim MIMO Handset Antenna With Distributed Feeding
IEEE Access, 2019 A new antenna design method together with a novel metal rim antenna is presented in this paper. The design method transforms an electromagnetic synthesis problem into a circuit problem, which can be solved in a straightforward manner.
Rasmus Luomaniemi +3 more
doaj +1 more source
Novel small-size directional antenna for UWB WBAN/WPAN applications [PDF]
, 2005 This paper presents a novel small-size directional antenna design for ultrawide-band wireless body area networks/wireless personal area networks applications.
Klemm, M +3 more
core +2 more sources
Development and testing of an antenna made of an optically transparent conductive film
Frontiers in Antennas and PropagationIntroductionOptically transparent antennas are being actively developed for various industrial applications; however, their widespread deployment is often limited by low radiation efficiency.
Maria Koutsoupidou +9 more
doaj +1 more source
International Journal of Antennas and Propagation, 2014 In the circular polarization antenna array, the input impedance, axial ratio, and radiation pattern of antenna patch will be changed. Compared with the performances of single antenna, the mutual coupling also led to the low efficiency of all antennas.
Zijian Xing +3 more
doaj +1 more source