A method of manufacturing a microwave antenna assembly includes the step of providing a proximal portion having an inner conductor and an outer conductor. Each of the inner and outer conductors extend through the proximal portion and the inner conductor is disposed within the outer conductor. The method also includes the step of placing a junction member adjacent to a distal end of the proximal portion such that the inner conductor extends through a channel defined in the junction member. The method also includes the step of placing a proximal end of a distal portion adjacent to a distal end of the junction member such that the inner conductor extends within a channel defined within the distal portion. The method also includes the step of affixing the inner conductor to the distal portion such that the proximal portion and the distal portion apply a compressive force on the junction member.