نتایج جستجو برای: directive antenna
تعداد نتایج: 56676 فیلتر نتایج به سال:
In this work, the propagation loss of three short range directive channels at 5.5GHz is measured using different directive antennas and a Vector Network Analyzer (VNA). Results are given for a channel bandwidth of 300 MHz which will be the future channel bandwidth of IEEE 802.11 ac system. It has been noted that the multipath induced fading tends to have Normal Distribution at low distance betw...
Sixth-Generation (6G) wireless communication networks require the fabrication of broadband and high directivity microstrip antennas to offset atmospheric path loss beyond 100 Gigahertz (GHz). In this paper, we designed proposed a couple high-gain array that have been within Finite Integration Technique (FIT) solver at Computer Simulation Technology Microwave Studio (CST MWS) software in series-...
This paper presents a novel design and analysis of inset fed microstrip patch antenna with an air substrate operating at 2.4 Ghz. The proposed has high directivity radiation efficiency which are 2 important parameters in antennas for communications, radars, wireless power transmission other applications. S parameters, VSWR, Directivity, gain, beamwidth, efficiency, electric field intensity size...
This work presents and describes the design of a novel multilayer antenna structure based on metasurfaces for 5G mobile applications. The suggested has good matching input impedance around 28 GHz, bandwidth 2.2 an enhancement gain in comparison with standard patch antenna. is mounted two substrates; first one foam, second Roger’s substrate suitable whole dimensions final circuit are 3.28x4.23mm...
The goal for the third generation of mobile communications system is to integrate a wide variety of communication services such as high speed data, video and multimedia traffic as well as voice signals. Under the Universal Mobile Telecommunication System (UMTS) environment the Third Generation (3G) has many advantages such as highly efficient spectrum utilisation and variable user data rates. I...
This paper introduces a novel structure of 4×4 multiple beam forming antenna system using substrate integrated folded waveguide technology. For high speed wireless communication it is necessary to minimize the interferences and multipath fading. Multiple beam forming antenna system is a good solution to these problems. The substrate integrated folded waveguide (SIFW) technology reduces the widt...
In this paper, we propose a full-rate full-diversity space-time block code (STBC) for 2× 2 reconfigurable multipleinput multiple-output (MIMO) systems that require a low complexity maximum likelihood (ML) detector. We consider a transmitter equipped with a linear antenna array where each antenna element can be independently configured to create a directive radiation pattern toward a selected di...
This document contains a first assessment of spatial transmission schemes regarding performance and complexity. In order to assess advanced beamforming and MIMO technologies, mathematical models, as well as methodologies for simulation and assessment have been developed. Conceptual work and simulation campaigns have been conducted. A baseline WINNER multi-antenna concept is proposed for further...
Despite a plethora of applications ranging from wireless communications to sensing and spectroscopy, the current terahertz beam steering technologies suffer from tremendous insert loss, stringent control of electric bias, limited scanning angle, relatively complicated configuration and narrow operation bandwidth, preventing further practical application. We propose and demonstrate a conceptuall...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید