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Compact planar dual-band crossover using two-section branch-line coupler

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2 Author(s)
Lee, Z.-W. ; Dept. of Electr. Eng., Nat. Univ. of Kaohsiung, Kaohsiung, Taiwan ; Pang, Y.-H.

The design of a four-port crossover that can be operated at two arbitrary frequencies by using two branch-line couplers is presented. This design utilises the advantage of the transmission phase characteristic of the branch-line coupler. The proposed circuit also features compact size, a planar structure, widely separated frequency bands, and good inter-band rejection between the two operating frequencies. For verification, both simulation and measured results of a microstrip crossover operating at 900 MHz and 2.45 GHz are given and are consistent with each other.

Published in:

Electronics Letters  (Volume:48 ,  Issue: 21 )

Date of Publication:

October 11 2012

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