1. The apparatus for electrosurgical ablation, which contains an ablation antenna (4) for emitting sequentially or simultaneously the energy of electromagnetic radiation, which has two or more different frequencies of RF ablation for ablation of biological tissue, in which the ablation antenna (4) contains at least one needle (41) of the antenna, which contains the first and second resonator element (411, 412), which resonates at the first and second frequency of RF ablation, respectively, characterized in that the first resonator element (411) is implemented in in the form of a coaxial conductor structure, which has an inner conductor and an external RF shield, and the second resonator element (412) is implemented in the form of a spiral coil that is wound around a coaxial conductor structure, while the proximal end (412a) of the spiral coil of the second resonator element (412) is connected to the inner the conductor of the first resonator element (411) and the distal end (412b) of the spiral coil of the second resonator element (412) is electrically isolated from the first resonator element (411) .2. An electrosurgical ablation apparatus according to claim 1, wherein the external RF screen of the first resonator element (411) is implemented in the form of at least two shielding cables (411a, 411b) that are electrically isolated from each other. The electrosurgical ablation apparatus according to claim 1, wherein the ablation antenna (4) is implemented in the form of a flexible antenna for use with catheters. 4. An apparatus for electrosurgical ablation, which contains an ablation antenna (4) for emitting sequentially or simultaneously the energy of electromagnetic radiation, which has two or more different frequencies P1. Аппарат для электрохирургической абляции, который содержит абляционную антенну (4) для испускания последовательно или одновременно энергии электромагнитного излучения, которое имеет две или более различных частоты РЧ абляции для абляции биологич
