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A novel compact-size branch-line coupler

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4 Author(s)
Shry-Sann Liao ; Feng-Chia Univ., Taichung, Taiwan ; Pou-Tou Sun ; Nien-Chung Chin ; Jen-Tee Peng

A novel compact-size branch-line coupler without any implementation of lumped-elements, bonding wires, and via holes is proposed. In this study, the size of the proposed coupler occupied only 45% of the conventional branch-line coupler at 2.4GHz. The performances of the circuit can be competed with the conventional coupler. The element sizes of this coupler can be realized easily by using simply standard printed-circuit-board etching processes. It is very useful for applications in the wireless communication systems.

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:15 ,  Issue: 9 )

Date of Publication:

Sept. 2005

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