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Proceedings Paper

Printed-Circuit Rat-Race-Type Directional Couplers For Larger Power-Split Ratio
Author(s): Isao Ohta; Ichiro Hagino; Takenori Kaneko
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Paper Abstract

Two different types of 5/2-wavelength rat-race-type directional couplers with a remarkably increased power-split ratio for a realizable ring-impedance, in particular which are useful for millimeter-wave circuits suffering from the severe restriction on the usable impedance range, are described. Experimental corroboration is provided in the microwave region (at 8 GHz).

Paper Details

Date Published: 18 November 1989
PDF: 2 pages
Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1989); doi: 10.1117/12.978498
Show Author Affiliations
Isao Ohta, Himeji Institute of Technology (Japan)
Ichiro Hagino, Himeji Institute of Technology (Japan)
Takenori Kaneko, Himeji Institute of Technology (Japan)


Published in SPIE Proceedings Vol. 1039:
13th Intl Conf on Infrared and Millimeter Waves
Richard J. Temkin, Editor(s)

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