Dykes has dropped a level from the Championship to League One to join a Birmingham side, who, having been installed as promotion favourites, have made a good start, taking seven points from their first three games.
“The club has a clear aim for where they want to go in the future,” Dykes told Bluestv.
“They are ambitious and that is like myself as a player.
“I want to get to the top and I am hoping that can be with Birmingham. There are quality players here and it is a top-class club.”
Meanwhile, Blues have confirmed forward Juninho Bacuna has left the club to join Saudi side Al-Wehda for an undisclosed fee.
The 27-year-old scored 13 goals in 111 appearances for Birmingham but had not been involved this season.
