Stepped impedance microstrip couplers with improved directivity

Link:
Autor/in:
Verlag/Körperschaft:
Hamburg University of Technology
Erscheinungsjahr:
2009
Medientyp:
Text
Schlagworte:
  • Couplers
  • Directivity
  • Inhomogeneous media
  • Microstrip
  • Phase velocity compensation
  • Stepped impedance
  • 600: Technik
  • 620: Ingenieurwissenschaften
Beschreibung:
  • This paper presents the design of microstrip couplers with improved directivity. In order to compensate for the unequal phase velocities of even- and odd-mode in inhomogeneous media, the coupler is subdivided into multiple sections. It is shown that by properly choosing the lengths, the impedances, and the coupling coefficients of the corresponding sections, the coupler's directivity can be optimized. The design procedures can easily be applied using commercially available simulation software. Measurements confirm the design methodology and show good agreement with the simulation results. © 2009 IEEE.
Beziehungen:
DOI 10.1109/MWSYM.2009.5165773
Quellsystem:
TUHH Open Research
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Quelldatensatz
oai:tore.tuhh.de:11420/8453