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Cláudia Rodrigues, Marco Veloso, Ana Alves and Carlos Bento
The COVID-19 pandemic affected many aspects of human mobility and resulted in unprecedented changes in population dynamics, including lifestyle and mobility. Recognizing the effects of the pandemic is crucial to understand changes and mitigate negative i...
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Jinjing Ren, Hezhihan Fan, Qi Tang, Zhongyuan Yu, Yang Xiao and Xiang Zhou
Enlarging or reducing the antenna beam width of antennas can improve the positioning capability of detection systems. A miniaturized and easily fabricated ultra-wideband (UWB) antenna system for long-distance electromagnetic detection is proposed in this...
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Vitalii Beschastnyi, Daria Ostrikova, Roman Konyukhov, Elizaveta Golos, Alexander Chursin, Dmitri Moltchanov and Yuliya Gaidamaka
The 5G New Radio (NR) technology operating in millimeter wave (mmWave) frequency band is designed for support bandwidth-greedy applications requiring extraordinary rates at the access interface. However, the use of directional antenna radiation patterns,...
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Tae Heung Lim, Byung-Jun Jang and Hosung Choo
In this paper, we propose a novel design of a two-element array antenna on an electrical thick substrate with an extremely narrow array distance. The proposed array consists of a rectangular ring patch printed on a thick substrate and a monopole wire in ...
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Belinda Lipa, Donald Barrick and Chad Whelan
This paper describes a method to provide quality control for radial velocity maps derived from radar echo voltage cross spectra measured by broad-beam high frequency radars. The method involves the comparison of voltage cross spectra measured at Doppler ...
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Kwok Kan So, Kwai Man Luk, Chi Hou Chan and Ka Fai Chan
By employing the complementary dipole antenna concept to the normal waveguide fed slot radiator, an improved antenna element with wide impedance bandwidth and symmetrical radiation patterns is developed. This is achieved by mounting two additional metall...
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Endrit Shehaj, Vincenzo Capuano, Cyril Botteron, Paul Blunt and Pierre-André Farine
In recent years, global navigation satellite system (GNSS)-based navigation in high earth orbits (HEOs) has become a field of research interest since it can increase the spacecraft?s autonomy, thereby reducing the operating costs. However, the GNSS avail...
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Na Kou, Long Li, Shuncheng Tian and Yuanchang Li
A metamaterial aperture antenna (MAA) that generates frequency-diverse radiation field patterns has been introduced in the context of microwave wave imaging to perform compressive image reconstruction. This paper presents a new metamateriapl aperture des...
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Franklin Drummond and Gregory Huff
An Unmanned Aerial System (UAS) has been developed which is based on an aerodynamically functionalized planar wideband antenna. The antenna utilizes a planar circular dipole metallization scheme. The aerodynamic structure implements a planform similar to...
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Eduardo Rodríguez Araque,Roberto G. Rojas. Ohio University, Fundación universitaria Cafam, EEUU, Colombia
Pág. 167 - 176
Presentamos en este artículo un arreglo de antenas MIMO (multiple-input-multiple-output) que opera en la banda de 2.6 GHz, una de las bandas de operación de Long Term Evolution (LTE), para sistemas de comunicaciones móviles inalámbricas con técnicas de a...
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