Ramsey netted twice on Tuesday as a 2-0 win helped the Gunners make it through their playoff tie against the Turks with a 5-0 aggregate victory.
"He gets to the end of things now," Wenger told the club's official website. "I liked especially his second goal. It's a good finish and a year ago he would not have taken that chance the way he took it here.
"He's improving from week to week. That's very positive for us because a year ago, many people were questioning Aaron Ramsey."
Arsenal continue their Premier League campaign on Sunday when they welcome local rivals Tottenham Hotspur to the Emirates Stadium.