The present invention relates to minimally invasive surgery techniques. Itprovides a method for manufacturing an antenna for percutaneous acutehyperthermia microwave applications of the monopole or dipole co-axial typeprovided with trap, commonly called choke, for blocking the propagation of thebackwards reflecting wave towards the generator. The method of manufacturingthe antenna provides a metal needle (1) for the introduction of the antenna(2, 3, 4) in the target tissue. On the external conductor (4) of the antenna(2) a metal collar (6) is connected in a predetermined position; a plasticssheath (5) is applied in order to cover the external conductor (2) in theportion between the feed (7) and the collar (6); the inner wall of the metalneedle (1) wherein the antenna is inserted is then used for containing andguiding the collar (6) and the sheath (5); in particular, the collar (6) beingin electrical contact with the inner wall of the metal needle (1). An antennais thus obtained with choke of variable length and with miniaturized diameter.A thermocouple (21) can be introduced through the choke that protrudesdirectly in the ''feed'' zone.
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