A device, apparatus, and method are provided for mitigation of return loss during signal transmission. The device comprises a radio transmitter and a radio antenna coupled by a signal transmission line, the radio antenna configured to broadcast over air a radio signal transmitted by the radio transmitter, the signal transmission line configured to transmit the radio signal to the radio antenna along a signal path. The device further comprises a positioning stub coupled to the radio transmitter, the radio antenna, and the signal transmission line, the positioning stub configured to move to different locations along the signal path to dynamically change the impedance of the signal path to reduce signal return loss.