Results 11 to 20 of about 2,238 (164)
International Journal of Antennas and Propagation, 2008 1 Electrical & Computer Engineering Department, College of Engineering, Montana State University, 610 Cobleigh Hall Bozeman, MT 59717, USA 2Department of Electrical and Computer Engineering, University of Colorado, Boulder Campus Box 425, Boulder, CO 80309-0425, USA 3The Q-Track Corporation, 515 Sparkman Drive NW, Huntsville, AL 35816, USA 4 Intel ...
James Becker +3 more
doaj +5 more sources
Wideband single‐fed circularly polarised patch antenna
IET Microwaves, Antennas & Propagation, 2023 A two‐layered wideband single‐fed circularly polarised (CP) antenna is presented by the authors. A single‐fed corner‐truncated square patch with four identical rectangular matching branches acts as a bottom‐driven patch to generate CP radiation.
Liang Zhang +4 more
doaj +1 more source
IEEE Open Journal of Antennas and Propagation, 2022 Modern antenna arrays desire antenna apertures which can support a wide frequency range and reconfigurable polarization states. It is challenging to realize such antenna apertures with high isolation among different antenna elements when they are closely
J. Huang, M. Shirazi, X. Gong
doaj +1 more source
Metamaterial-Based Antenna Performance Enhancement for MIMO System Applications
IEEE Access, 2021 This paper presents a method for designing a new two-element ultra-wideband (UWB) multiple-input-multiple-output (MIMO) antenna. We propose the design of an ultra-wideband antenna has been proposed with a study of its properties.
Hedi Sakli +3 more
doaj +1 more source
Influence of the Antennas on the Ultra-Wideband Transmission
EURASIP Journal on Advances in Signal Processing, 2005 Summary: Spectrum is presently one of the most valuable goods worldwide as the demand is permanently increasing and it can be traded only locally. Since the United States Federal Communications Commission (FCC) has opened the spectrum from 3.1 GHz to 10.6 GHz, that is, a bandwidth of 7.5 GHz, for unlicensed use with up to -41.25 dBm/MHz EIRP, numerous ...
Sörgel, W., Wiesbeck, Werner
openaire +3 more sources
A time domain spherical near-field measurement facility for UWB antennas employing a hardware gating technique [PDF]
Advances in Radio Science, 2010 A spherical near-field antenna measurement facility employing a time domain hardware gating technique is presented. On-off keyed sinusoidal impulses are used as stimuli requiring wideband antennas with a bandwidth in excess of 400 MHz.
M. D. Blech +6 more
doaj +1 more source
Tightly Coupled Array Antennas for Ultra-Wideband Wireless Systems
IEEE Access, 2018 Tightly coupled array (TCA) antenna has become a hot topic of research recently, due to its potential of enabling one single antenna array to operate over an extremely wide frequency range.
Yonggang Zhou +8 more
doaj +1 more source
, 2015 The focus of UWB antenna research activity has matured in recent years and currently mainly concentrates on applications such as biomedicine and security. Early UWB antenna designs were driven by the FCC allocation of spectrum in 2002 and focussed on obtaining wide impedance bandwidths with reasonable group delay characteristics.
Ammann, Max +2 more
openaire +3 more sources
Applying of Luneburg lens for multi-beam TEM-horn antenna
The Journal of Engineering, 2019 Here, a multi-beam TEM-horn antenna with beam direction is proposed. Presented construction allows obtaining scanning beam and complicated antenna patterns, thus it can be used as substitute of ultra-wideband phased array antennas.
Anatoly M. Bobreshov +4 more
doaj +1 more source
Antenna Evaluation for Ultra-Wideband Microwave Imaging
International Journal of Antennas and Propagation, 2010 Numerous antenna designs have been proposed for microwave breast imaging utilizing an ultra-wideband frequency range. The antennas are typically compact, operate in an immersion medium, and have a band covering at least 2–10 GHz.
Jeremie Bourqui +3 more
doaj +1 more source