Results 41 to 50 of about 758,632 (333)
, 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
Quality measurements of an UWB reduced-size CPW-fed aperture antenna [PDF]
, 2015 The paper presents a characterization of a compact co-planar waveguide (CPW)-fed slot loaded low return loss planar printed antenna designed for wireless communication and ultra-wideband (UWB) applications. Following a review of the antenna design, which
Ammar, M. +5 more
core +2 more sources
Spatiotemporal coherent summation of Ultra-Wideband chaotic radio pulses. Experiment [PDF]
Известия высших учебных заведений: Прикладная нелинейная динамикаThe purpose of this work is to experimentally prove the physical feasibility of coherent addition of chaotic signals (ultra-wideband chaotic radio pulses) in space and time.
Kuzmin, Lev Viktorovich +3 more
doaj +1 more source
Overview and Comparison of Nonlinear Interference Modelling Approaches in Ultra-Wideband Optical Transmission Systems [PDF]
, 2019 The recent advances in modelling nonlinear interference of systems operating beyond the C-band are discussed.
Bayvel, Polina +2 more
core +2 more sources
On Rapid Re-Design of UWB Antennas with Respect to Substrate Permittivity
Metrology and Measurement Systems, 2016 Re-design of a given antenna structure for various substrates is a practically important issue yet non trivial, particularly for wideband and ultra-wideband antennas. In this work, a technique for expedited redesign of ultra-wideband antennas for various
Koziel Slawomir, Bekasiewicz Adrian
doaj +1 more source
An ultra-wideband origami microwave absorber
Scientific Reports, 2022 Microwave absorbers have been used to mitigate signal interference, and to shield electromagnetic systems. Two different types of absorbers have been presented: (a) low-cost narrowband absorbers that are simple to manufacture, and (b) expensive wideband ...
Akash Biswas +5 more
doaj +1 more source
Comprehensive design and propagation study of a compact dual band antenna for healthcare applications [PDF]
, 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
Abbasi, Qammer H. +2 more
core +2 more sources
Ultra-wideband Communications [PDF]
, 2004 Many applications in wireless communications often require short-range systems capable of rapidly collecting data and transmitting it reliably. Commercial communication systems operate in fixed frequency bands and are easily detectable and are prone to jamming by the enemy, among other shortcomings. The new ultra-wideband (UWB) communications system in
Waltjen, K. +6 more
openaire +3 more sources
IEEE Access, 2019 The ultra-wideband technique has shown its effectiveness for indoor target tracking. Various types of measurements have been applied to ultra-wideband systems for indoor target tracking, and the time difference of arrival (TDOA) measurement-based ...
Hyung June Kim +4 more
doaj +1 more source
Wi-PoS : a low-cost, open source ultra-wideband (UWB) hardware platform with long range sub-GHz backbone [PDF]
, 2019 Ultra-wideband (UWB) localization is one of the most promising approaches for indoor localization due to its accurate positioning capabilities, immunity against multipath fading, and excellent resilience against narrowband interference.
De Poorter, Eli +7 more
core +1 more source