Results 21 to 30 of about 56,526 (292)
Mobile WiMAX: impact of mobility on the performance of limited feedback linear precoding [PDF]
, 2010 The mobile WiMAX standard (802.16e) uses multiple-input multiple-output (MIMO) limited feedback linear precoding to exploit the channel state information at the transmitter.
Doufexi, A, Nix, AR, Tran, T
core +2 more sources
International Journal of Antennas and Propagation, 2014 This paper introduces the design and implementation of two high gain Quasi-Yagi printed antennas developed on silicon substrate for 94 GHz imaging applications.
Osama M. Haraz +4 more
doaj +1 more source
Methods of calculating linear arbitrarily curved antennas with complex and reactive loads [PDF]
Радиофизика и электроника, 2019 The subject and purpose of the work. The methods and results of calculations of the electrical characteristics of the wire randomly bent antennas of the microwave range have been investigated with the purpose of significantly expanding their capabilities
V.V. Ovsyanikov +3 more
doaj +1 more source
Isolation Improvement Technique for Two Closely Spaced Loop Antennas Using MTM Absorber Cells
International Journal of Antennas and Propagation, 2012 This paper presents a new method to improve isolation between two loop antennas with absorber cells exhibiting negative permittivity and permeability at the aimed frequency of 2.54 GHz.
Hongmin Lee, Hyungsup Lee
doaj +1 more source
Electronics Letters, 1965 An experimental investigation on the impedance and radiation characteristics of thin-wire loop antennas is described. Impedance plots and radiation patterns are presented, showing a wide range of characteristic impedances and a capability of producing nearly isotropic radiation patterns.
Mario, Boella +3 more
openaire +2 more sources
Near-Field Reception of Dipole Sources Using a Dual-Loaded Loop
IEEE Access, 2023 The dual-loaded loop is a two-port antenna configured as two half-loops. Its advantage is the ability to sense two field components instead of the single component of a single-port loop.
Christopher G. Hynes, Rodney G. Vaughan
doaj +1 more source
, 2015 This chapter on loop antennas covers implementation aspects of both electrically small and electrically large loops which have a wide range of applications. On one side, they are still a part of the old broadcasting systems such as analog radios, and, on the other side, they are increasingly gaining attention for the contemporary high-definition video ...
Massey, PJ +4 more
openaire +3 more sources
Investigation of Epidermal Loop Antennas for Biotelemetry IoT Applications
IEEE Access, 2018 The Quadruple Loop (QL) antenna was designed and investigated to deliver a robust body-worn antenna for bio-medical applications. The QL antenna is a very thin single-layer groundless structure which allows for the installation of neighboring electronics
Haitham Abu Damis +4 more
doaj +1 more source
Dual-Band RFID Tag Antenna Based on the Hilbert-Curve Fractal for HF and UHF Applications [PDF]
, 2016 A novel single-radiator card-type tag is proposed which is constructed using a series Hilbert-curve loop and matched stub for high frequency (HF)/ultra high frequency (UHF) dual-band radio frequency identification (RFID) positioning applications.
Alibakhshikenari, Mohammad +4 more
core +1 more source
Experimental testbed for seawater channel characterization
, 2016 Shallow seawaters are problematic for acoustic and optical communications. Sensor networks based on electromagnetic (EM) communications are evaluated in this environment.
Cardona, Laura +8 more
core +1 more source