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Dual-band rat-race coupler design using tri-section branch-line

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2 Author(s)
K. -k. m. Cheng ; Dept. of Electron. Eng., Chinese Univ. of Hong Kong ; F. -l. Wong

The design of a novel rat-race coupler that can operate at two widely separated frequency bands is presented. The proposed circuit also features compact size, planar structure without a via hole, and low insertion loss. For validation, both simulated and measured performance of a microstrip rat-race coupler operating at 2.45/5.8 GHz are shown

Published in:

Electronics Letters  (Volume:43 ,  Issue: 6 )