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Compact folded line rat-race hybrid couplers

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4 Author(s)
Settaluri, R.K. ; Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA ; Sundberg, G. ; Weisshaar, A. ; Tripathi, V.K.

A new, compact folded line configuration for rat-race hybrid couplers is proposed. Simple design equations are presented for the single and double C-section folded line structures. The new configuration exhibits a four- to fivefold reduction in footprint as compared to the conventional rat-race configuration. The design is validated both by using the full-wave electromagnetic simulator and with measurement.

Published in:

Microwave and Guided Wave Letters, IEEE  (Volume:10 ,  Issue: 2 )