Aufgabe und Wirkungsweise eines Zirkulators mit Faraday-Dreher (nichtreziproker H^-Polarisationsdreher) werden kurz erläutert. Einige Wege zur Realisierung möglichst wenig frequenz-und temperaturabhängiger Drehwinkel im Faraday-Dreher und möglichst guter, breitbandiger Anpassung an allen Armen des Zirkulators werden beschrieben. Die Hinweise sind an einem praktisch ausgeführten Muster erprobt. Für die Verwendungszwecke als Richtungsleitung, Antennenweiche und Kanalweiche werden die gemessenen elektrischen Eigenschaften im Frequenzbereich um 7 GHz angegeben.Function and operation of a circulator with Faraday rotator (non-reciprocal Hu-polarization rotator) are briefly explained. Some ways are described for the realization of angles of rotation in the Faraday rotator with a minimum of dependence on frequency and temperature and for optimum wideband matching at all arms of the circulator. This information has been evaluated on. a practical prototype. For the application as isolator, antenna separating filter, and RF channel filter the measured electrical properties are stated in the frequency range around 7 Gc/s.
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