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  Robust, Quiet, Stable Power Supply for Active Antenna Systems with Built-In Protection and Diagnostic Capabilities &mdash LT Journal
  PDF, 795 Kb, Datei veröffentlicht: Dec 1, 2009
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  L DESIGN FEATURES Robust, Quiet, Stable Power Supply
  for Active Antenna Systems with
  Built-In Protection and Diagnostic
  Capabilities
  by Sam Rankin and Steve Knoth
  Introduction
  The days of the simple car radio, like
  the Mercedes dashboard shown in FigureВ 1, are over, supplanted by the era
  of the automobile infotainment system
  (see FigureВ 2). The venerable AM/FM
  radio still holds a place at the infotainment table, but it now shares space
  with digital audio broadcasting (DAB),
  digital and high-definition television
  (HDTV), satellite radio, integrated cell
  phones, CD/DVD/MP3 players, global
  positioning system (GPS) navigation
  and video game systems.
  Behind the dashboard, fueling
  this wealth of information, are active
  antenna systems. As infotainment
  centers have expanded in complexity, the number of active antennas
  needed to feed music and data into the
  infotainment center has multiplied. It …

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