Developing a Dual Polarization Antenna (DPA) for High Dynamic Applications

Author(s):  
Sherman Lo ◽  
Yu Hsuan Chen ◽  
Fabian Rothmaier ◽  
Godwin Zhang ◽  
Chiawei Lee
2019 ◽  
Vol 27 (4) ◽  
pp. 4734 ◽  
Author(s):  
Ruiqi Zheng ◽  
Erwin H. W. Chan ◽  
Xudong Wang ◽  
Xinhuan Feng ◽  
Bai-ou Guan

1986 ◽  
Vol 133 (1) ◽  
pp. 26
Author(s):  
J. Mellis ◽  
G.R. Adams ◽  
K.D. Ward

Author(s):  
Ľuboš SMUTKA ◽  
Helena ŘEZBOVÁ ◽  
Patrik ROVNÝ

The European sugar beet quota system is in very high dynamic process in recent years. The number of sugar companies involved in this system has been constantly decreasing. The aim of this paper is to define subjects (companies/alliances), which possess the current production capacities working under the production quotas system. The paper is determining especially the level of beet sugar production quota holder system concentration using the Herfindahl-Hirschman Index. The paper provides the following findings. The European quota holder system is extremely concentrated and it is becoming more and more dominated by fewer players. Sugar quota is distributed among 19 EU-Member States. In this regard, the quota is generous, especially in relation to France, Germany, Poland and United Kingdom. In Finland, Lithuania, Hungary, Sweden, Denmark, the Netherlands, Slovakia and the United Kingdom controlled by two or even one subject (companies, alliances). There is a large discrepancy between political efforts to distribute equitable R 1308/2013-sugar quotas among states and the actual reality of those distributions. While the EU-quota holder system does not indicate an extreme concentration, an analysis according to the headquarters´ location and allocated quotas to owners of production capacities provides the evidence of extreme concentration.


2018 ◽  
Vol 2018 (1) ◽  
pp. 49-52
Author(s):  
Baiyue Zhao ◽  
Ming Ronnier Luo
Keyword(s):  

Jurnal Teknik ◽  
2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Heru Abrianto

Microstrip antenna which designed with dual feeding at 2.4 GHz and 5.8 GHz can meet WLAN (Wireless Local Area Network) application.Antenna fabrication use PCB FR4 double layer with thickness 1.6 mm and dielectric constant value 4.4. The length of patch antenna according to calculation 28.63 mm, but to get needed parameter length of patch should be optimized to 53 mm. After examination, this antenna has VSWR 1.212 at 2.42 GHz and 1.502 at 5.8 GHz, RL -13.94 dB at 2.42 GHz and -20.357 dB at 5.8 GHz, gain of antenna 6.16 dB at 2.42 GHz and 6.91 dB at 5.8 GHz, the radiation pattern is bidirectional. Keywords : microstrip antenna, wireless LAN, dual polarization, single feeding technique


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