Results 1 to 10 of about 1,468,318 (298)
In-flight calibration of STEREO-B/WAVES antenna system [PDF]
Radio Science, 49, 3, 146, 2014, 2015 The STEREO/WAVES (SWAVES) experiment on board the two STEREO spacecraft (Solar Terrestrial Relations Observatory) launched on 25 October 2006 is dedicated to the measurement of the radio spectrum at frequencies between a few kilohertz and 16 MHz. The SWAVES antenna system consists of 6 m long orthogonal monopoles designed to measure the electric ...
B. Cecconi +33 more
arxiv +4 more sources
Radio Interferometer with Simple antennas [PDF]
arXiv, 2023 A Radio interferometer comprises several antennas, spared over a large area. Say ALMA(Atacama Large Millimeter/submillimeter Array), VLA(very large array), VLBA(Very Long Baseline Array), GMRT(Giant Metrewave Radio Telescope), MWA( Murchison Widefield Array), EHT(Event Horizon Telescope), and the SKA(Square Kilometer Array), the name itself speaks ...
arxiv +3 more sources
Comprehensive Design and Propagation Study of a Compact Dual Band Antenna for Healthcare Applications [PDF]
Journal of Sensor and Actuator Networks, 2015 In this paper, a dual band planar inverted F antenna (PIFA) has been investigated for cooperative on- and off-body communications. Free space and on-body performance parameters like return loss, bandwidth, radiation pattern and efficiency of this antenna
Mohammad Monirujjaman Khan +2 more
doaj +4 more sources
Helical Antennas in Satellite Radio Channel [PDF]
, 2011 Monofilar and multifilar helical antennas are the most widely proposed antennas in satellite communications systems. The main reason why these antennas constitute an asset in applications concerning satellite and space communications generally is circular polarization.
Maja Skiljo, Zoran Blazevic
openaire +4 more sources
Study on deployment mechanism of the satellite umbrella antenna
Hangkong gongcheng jinzhan, 2023 The relaxation and jumping from slot of the power rope of the antenna deployment mechanism are likely to occur in the process of antenna deployment and folding.
LIU Tingting +3 more
doaj +1 more source
Remote Sensing, 2021 This study presents mathematical analysis and numerical modeling for the estimation of measurement errors of height estimation over the sea surface for a precision radar altimeter installed in a low altitude flying vehicle.
Aleksandr I. Baskakov +3 more
doaj +1 more source
Scientific Reports, 2022 Spectroscopy in the sub-terahertz (sub-THz) range of frequencies has been utilized to study the picosecond dynamics and interaction of biomolecules. However, widely used free-space THz spectrometers are typically limited in their functionality due to low
Seyed Ali Hosseini Farahabadi +5 more
doaj +1 more source
Simulation of Small Radio Telescope Antenna Parameters at Frequency of 1.42 GHz
Iraqi Journal of Physics, 2022 The paper presents an overview of theoretical aspects of small radio telescope antenna parameters. The basic parameters include antenna beamwidth, antenna gain, aperture efficiency, and antenna temperature.
Uday E Jallod +2 more
doaj +1 more source
First observations with a GNSS antenna to radio telescope interferometer [PDF]
Radio Science, 58, e2023RS007734, 2023 We describe the design of a radio interferometer composed of a Global Navigation Satellite Systems (GNSS) antenna and a Very Long Baseline Interferometry (VLBI) radio telescope. Our eventual goal is to use this interferometer for geodetic applications including local tie measurements.
arxiv +1 more source
WGM-Based Sensing of Characterized Glucose- Aqueous Solutions at mm-Waves
IEEE Access, 2020 A newly-developed commercial coaxial probe kit (DAK-TL) is used to characterize the electromagnetic properties of glucose-loaded samples prepared at a range of concentrations 0.7-1.2 mg/ml similar to Type-2 normal diabetics in a broad range of ...
Ala Eldin Omer +3 more
doaj +1 more source