a method of fabricating a microwave antenna assembly is disclosed . the fabrication method includes providing a proximal portion having an inner conductor and an outer conductor , the inner conductor extending at least partially therein . the method further includes providing a distal portion disposed distally of the proximal portion , with the inner conductor extending at least partially therein . a high strength material may be injected from an inflow slot to an outflow slot of the distal portion such that the material is disposed in - between the inner conductor and a ceramic layer . the material bonds the distal portion and the ceramic layer to the proximal portion while providing mechanical strength to the distal portion .