Design of a Shaped Beam Antenna for AM-TV Broadcasting System

1990 ◽  
Author(s):  
Bela Ladanyi-Turoczy
Author(s):  
Yu. Zoubarev ◽  
I. Tsirlin ◽  
L. Kantor ◽  
A. Kozlov ◽  
E. Koumysh ◽  
...  

2019 ◽  
Vol 10 (2) ◽  
pp. 147-155
Author(s):  
Peter Kravcak

In the early of nineties the dual broadcasting system in the young country in the middle of Europe enabled to develop television broadcasting to the scale of what viewers previously even had not dreamed of. Commercial television broadcasting prevailed in five and a half million country. Private broadcasting gained control of the more than forty-year-old state-owned service of TV broadcasting and sent it to the role of a statistical margin. Confidence of the first one - and later followed by other private televisions - has grown faster than the numbers of audience. Directors with the influence of legislators, unbeatable managers determined the transmission time programs from a week to week. This is termed as finding the optimal time based on audience preferences. The result is today's big television chaos for the viewers, who, as a consequence of unpredictable changes in the broadcasting of televisions cease to be interested. For many years the most viewed channel has dropped to the level of underrated rivals and the panic, which it suddenly started, make them produce more fatal changes. All in the name of the audience and excellent numbers of boxes called people meters. The same problem also faces other post-communist country, the second part of the former Czechoslovakia, the Czech Republic. The paper focuses on analysis and evaluation of Slovak television sphere (partly in comparison with the Czech), which seems, after twenty years of dual broadcasting, to gather a real media competition. But not everybody likes it.


Author(s):  
Takuya Shitomi ◽  
Akihiko Sato ◽  
Noriyuki Shirai ◽  
Tsuyoshi Nakatogawa ◽  
Masahiro Okano ◽  
...  

1981 ◽  
Vol 4 ◽  
Author(s):  
T. J. Stultz ◽  
J. F. Gibbons

ABSTRACTStructural and electrical characterization of laser recrystallized LPCVD silicon films on amorphous substrates using a shaped cw laser beam have been performed. In comparing the results to data obtained using a circular beam, it was found that a significant increase in grain size can be achieved and that the surface morphology of the shaped beam recrystallized material was much smoother. It was also found that whereas circular beam recrystallized material has a random grain structure, shaped beam material is highly oriented with a <100> texture. Finally the electrical characteristics of the recrystallized film were very good when measured in directions parallel to the grain boundaries.


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