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Compact broadband quadrature hybrid coupler using planar artificial transmission line

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3 Author(s)
Iran-Nejad, V. ; Eng. Dept., Islamic Azad Univ., Tehran, Iran ; Lotfi-Neyestanak, A.A. ; Shahzadi, A.

A novel compact size broadband quadrature hybrid coupler based on a planar artificial transmission line which can be used for WLAN application at 2.4 GHz is presented. The planar artificial transmission line is composed with both a dual transmission line and the π-model technique. The occupied size of the proposed broadband hybrid coupler is merely 47 of the size of a conventional design. The compact size coupler demonstrates well-behaved wideband response and good agreement with measurement.

Published in:

Electronics Letters  (Volume:48 ,  Issue: 25 )