An antenna assembly is configured for use with an external device that is configured to wirelessly communicate with an implantable medical device (IMD). The antenna assembly may include an antenna member pivotally secured to a structure through a feed post, and a fixed tail fixed to the structure. The antenna member may be pivotal between a first orientation in which the antenna member electrically connects to the fixed tail, and a second orientation in which the antenna member is disconnected from the fixed tail. The antenna member and the fixed tail cooperatively operate in a first antenna mode when the antenna member is in the first orientation. The antenna member is configured to operate in a second antenna mode when the antenna member is in the second orientation.
