Results 1 to 10 of about 50,749 (163)
Dual-Band Antenna with Pattern and Polarization Diversity. [PDF]
Sensors (Basel)This study proposes a pattern–diversity antenna with different radiation patterns at two different frequency bands (f1 and f2; f1: broadside radiation pattern, f2: conical radiation pattern).
Mo J, Sung Y.
europepmc +4 more sources
Diversity Gain Influenced by Polarization and Spatial Diversity Techniques in Ultrawideband
IEEE Access, 2015 This paper presents an experimental investigation of diversity gain influenced by polarization and spatial diversity techniques in ultrawideband (UWB) radio technology.
Antonio A Moreira +2 more
exaly +6 more sources
Polarization, diversity, and democratic robustness. [PDF]
Proc Natl Acad Sci U S A, 2021 In the Madisonian Constitution, fragmented and overlapping institutions of authority are supposed to manage democracy’s innate rivalry, channeling competition to serve the public interest. This system of safeguards makes democracy more robust: capable of withstanding and, if need be, adapting to challenges posed by a changing problem environment.
Bednar J.
europepmc +3 more sources
Characterization of Polarization Diversity at the Mobile
IEEE Transactions on Vehicular Technology, 2007 Two new models used to characterize polarization diversity at the mobile are presented and discussed. The first model is built upon existing theoretical models at a base station to demonstrate how those principles apply to the mobile fading environment.
Tim W C Brown, Simon R Saunders
exaly +6 more sources
IEEE Access, 2021 Equivalent discrete-time models for a variety of spatial combining techniques operating in a frequency-selective multipath fading channel are derived. The equivalent discrete-time models are used to perform computer simulations of the post-equalizer bit ...
Farah Arabian +2 more
doaj +1 more source
Sensors, 2021 Direction finding (DF) systems are used to determine the direction-of-arrival (DoA) of electromagnetic waves, thus allowing for the tracking of RF sources. In this paper, we present an alternative formulation of antenna arrays for modeling DF systems. To
Bernardo Fabiani +5 more
doaj +1 more source
Diversity, Agreement, and Polarization in Elections
Proceedings of the Thirty-Second International Joint Conference on Artificial Intelligence, 2023 We consider the notions of agreement, diversity, and polarization in ordinal elections (that is, in elections where voters rank the candidates). While (computational) social choice offers good measures of agreement between the voters, such measures for the other two notions are lacking. We attempt to rectify this issue by designing appropriate measures,
Piotr Faliszewski +4 more
openaire +3 more sources
Polarization Diversity Controllable Monopulse Antenna Array Design
IEEE Access, 2023 The design of a compact and wideband circularly polarized (CP) Monopulse antenna is presented. Firstly, the small-sized antenna element (13mm $\times13$ mm), with the impedance bandwidth (BW) of 80.5% (4.3-10.1 GHz) and axial ratio (AR) bandwidth
Saeid Karamzadeh
doaj +1 more source
Sensors, 2021 With growing interest in Industry 4.0, machine-to-machine communication (M2M) will become the key enabler for low-power wide area networks (LPWANs) in connecting machines and sensor nodes distributed across a distance in the industrial environment.
Zaid Ahmad +5 more
doaj +1 more source
A Compact High-Isolation Four-Element MIMO Antenna with Asymptote-Shaped Structure
Sensors, 2023 The demand for high-speed wireless communication systems has led to the development of ultrawide-band (UWB) antennas with a compact size and high performance.
Aiting Wu +4 more
doaj +1 more source