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Using a π-type multiple coupled microstrip line structure, a highly miniaturised Wilkinson power divider is fabricated. The line length of the power divider was reduced to about λ/44, and its size was 37% of a conventional Wilkinson power divider. The novel power divider showed good RF performances in S/C band.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el_20060895
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