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Design of S/C/X/Ku frequency band five notch broadband filter based on novel coupled signal path
This article present the design of a broadband filter structure spanning the S, C, X, and Ku uplink bands based on a novel coupling signal path generation. The core design features a centrally symmetric serial via hole array, microstrip line, and curved coplanar waveguide. This structure offers advantages such as low loss band pass, low frequency stopband in the S band, and stable transmission zeros while providing a broadband passband. Additionally, to address the signal suppression requirements in commercial communication frequencies, such as 5G base stations, 6G IMT, satellite TV, and Starlink, across the S, C, X, and Ku uplink bands, a dual-band notch structure for the C band and three improved signal suppression structures are proposed. Finally, the design achieves miniaturization and integration while ensuring excellent performance across all five independent stopbands. Experimental results closely match simulation findings: the filter exhibits a –3 dB bandwidth of 2.4–14.3 GHz with a relative bandwidth of up to 141 % . Each of the five suppression depths reaches –15 dB, occupying a compact footprint of only 14×10.8mm 2 ,with a relative wave guide area of 0.38 × 0.29λ 2 .
Journal Article
The State of Pay Television in Puerto Rico: Regulation, Globalization, and Concentration, 1996-2015
The year 2016 marks twenty years since the enactment of the Federal Telecommunications Act and the Telecommunications Act of Puerto Rico, both of which defined the legal framework for telecommunications and cable television in the Commonwealth of Puerto Rico, a non-incorporated territory of the United States. This study is based on media economics and historical methods to examine the processes of globalization and concentration in the pay television market in Puerto Rico between 1996 and 2015. The article is intended to answer the following questions: What role has regulation played in the processes of globalization and concentration in the cable television market in Puerto Rico? What is the corporate profile of the leading pay television companies? What changes did the structure of the pay television market undergo? What was the state of pay television in Puerto Rico in 2015? Drawing from the state telecommunications regulator's data, the analysis' findings show a market where globalization and concentration of ownership, as economic processes, were intertwined trends, and different types of companies (e.g., U.S.-based telecommunications companies, U.S.-based financial investments companies, transnational media companies, and transnational telecommunications companies) with different television delivery systems (e.g., cable television, satellite television, Internet protocol television, over the top television). The findings also trace the business model evolution of telecommunications and cable companies through the introduction of new services such as VoIP telephony, Internet access service, Internet protocol television; the reduction in the cable television subscriber base, and ending of local companies' participation in the cable television industry. [Keywords: Puerto Rico, Pay Television, Telecommunications, Media, Cable television, Globalization]
Journal Article
Bias in Cable News
We measure the persuasive effects of slanted news and tastes for like-minded news, exploiting cable channel positions as exogenous shifters of cable news viewership. Channel positions do not correlate with demographics that predict viewership and voting, nor with local satellite viewership. We estimate that Fox News increases Republican vote shares by 0.3 points among viewers induced into watching 2.5 additional minutes per week by variation in position. We then estimate a model of voters who select into watching slanted news, and whose ideologies evolve as a result. We use the model to assess the growth over time of Fox News influence, to quantitatively assess media-driven polarization, and to simulate alternative ideological slanting of news channels.
Journal Article
The Z factor : my journey as the wrong man at the right time
Autobiography of Subhash Chandra, born 1950, India's media tycoon and founder of Zee TV, one of the most popular satellite TV networks in India.
Book
From Satellite to Single Market
Richard Collins explores public service television's role in fostering pan-European cultural identity. Based on extensive primary research, interviews with participants and analysis of key European programmes, this book documents the growth of the public service satellite television network which was backed by the European Union, and its eventual alliance with Rupert Murdoch's commercial Sky network.
eBook
Analysis of the Effectiveness of the Method of Qualification Tests for Satellite Communications Earth Stations
We analyze the effectiveness of the qualification test method for communications satellite earth stations, implemented using a multi-user distributed measurement control system. We study the dependence of shortening the test phase on the number of organized operating sites, the technical characteristics of the spacecraft and the planned operational load of the on-board relay complex. We consider the possible increase in the commercial efficiency of a spacecraft over its lifetime.
Journal Article
Worlds in Common?
Worlds in Common? examines the newly emerging forms of language used in satellite television programmes, exploring a wide range of genres including twenty-four hour news broadcasting, culture channels, talk shows, local TV and European news. Focusing on the experiences of British and German viewers, the authors discuss these new forms of communication brought about by the technological and economic upheavals in Europe in the late 1990s. This interaction between media theories and media discourses, makes the book highly relevant for researchers in media and cultural studies as well as linguistics, and provides an important and innovatory link between these different approaches.
eBook