Saina, seeded second, won 21-19, 17-21, 21-12 against the sixth seeded Juliane in 53 minutes at the Queen Elizabeth Stadium.
In Sunday's final, Saina will face third seeded Chinese Shixian Wang, who defeated her compatriot and top-seed Xin Wang 21-13, 21-14 in the other semi-final that lasted just 31 minutes.
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