Ivanovic sets up Hantuchova semi
The world number 19, seeded second in Birmingham, was comfortable throughout, breaking late in the first set and then coming out on top in a second set laden with breaks of serves.
"I'm very happy with the win," Ivanovic said afterwards.
"I'm just enjoying competing again. I have a lot of nice memories on grass courts. Since the first match this week, I've felt good about myself and my game. I'm just trying to enjoy it while it lasts and have fun out there."
Ivanovic will now face fourth seed Daniela Hantuchova in a mouthwatering semi-final after the Slovak swept aside Alison Riske 6-2 6-4 in her quarter-final.
In the other half of the draw third seed Shuai Peng, who ended the hopes of Heather Watson in the previous round, continued her progress with a tight victory over Marina Erakovic, eventually triumphing 6-4 4-6 6-3.