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Isolation improvement in UWB-MIMO antenna system using slotted stub
(MDPI, 2020)
info:eu-repo/semantics/article,
Multiple-input multiple-output (MIMO) scheme refers to the technology where more than one antenna is used for transmitting and receiving the information packets. It enhances the channel capacity without more power. The ...
Power efficient simple technique to convert a reset-and-hold into a true-sample-and-hold using an auxiliary output stage
(IEEE, 2020)
info:eu-repo/semantics/article,
A technique to implement true-sample-and-hold circuits that hold the output for almost the entire clock cycle without resetting to zero is introduced, alleviating the slew rate requirement on the op-amp. It is based on a ...
A compact wide bandpass filter for satellite communications with improved out-of-band rejection
(AEM, 2020)
info:eu-repo/semantics/article,
This paper presents a compact C-band bandpass filter with improved out-of-band rejection. It consists of a symmetric three-pole parallel coupled line microstrip loaded with complementary split ring resonators (CSRRs) and ...
Revealing the underlying mechanisms behind TE extraordinary THz transmission
(Chinese Laser Press, 2020)
Artículo / Artikulua,
Transmission through seemingly opaque surfaces, so-called extraordinary transmission, provides an exciting plat- form for strong light–matter interaction, spectroscopy, optical trapping, and color filtering. Much ofthe ...
Lossy mode resonance sensors based on nanocoated multimode-coreless-multimode fibre
(Elsevier, 2020)
info:eu-repo/semantics/article,
In this work it is proved the ability to obtain lossy mode resonances (LMRs) in the transmission spectrum with multimode-coreless-multimode fibre optic structure coated with tin oxide on the coreless segment. The devices ...
Quasi-distributed vibration sensing based on weak reflectors and STFT demodulation
(IEEE, 2020)
Artículo / Artikulua,
In this work, a new system is proposed for quasi-distributed vibration sensing based on the Doppler effect. The setup employs an optical frequency domain reflectometer (OFDR) and an array of weak reflectors. The short-time ...
Gamma radiation-induced effects over an optical fiber laser: towards new sensing applications
(MDPI, 2020)
info:eu-repo/semantics/article,
In the present work, the effect of gamma radiation on the performance of different types of erbium-doped fibers (EDFs) when they are used in a fiber ring cavity (FRC) configuration is studied. Several pieces of commercial ...
From 2G to 5G spatial modeling of personal RF-EMF exposure within urban public trams
(IEEE, 2020)
info:eu-repo/semantics/article,
The upcoming design and implementation of the new generation of 5G cellular systems, jointly with the multiple wireless communication systems that nowadays coexist within vehicular environments, leads to Heterogeneous ...
Aggregator to electric vehicle LoRaWAN based communication analysis in vehicle-to-grid systems in smart cities
(IEEE, 2020)
info:eu-repo/semantics/article,
Recently, there has been growing attention to the power grid management due to the increasing concerns on global warming. With the advancement in electric vehicles (EV) industry and the evolution in batteries, EVs become ...
Optical fiber sensors based on microstructured optical fibers to detect gases and volatile organic compounds: a review
(MDPI, 2020)
info:eu-repo/semantics/article,
Since the first publications related to microstructured optical fibers (MOFs), the development of optical fiber sensors (OFS) based on them has attracted the interest of many research groups because of the market niches ...