ELECTROMAGNETIC APPARATUS Russian patent published in 1997 - IPC

FIELD: radiotherapy, in particular, self-adjusted wide-band electromagnetic applicators, can find application in microwave hyperpyrexia and microwave radiometry for therapeutic and diagnostic purposes. SUBSTANCE: electromagnetic apparatus uses microwave energy generator 1 connected via transmission line 2 to microbandpass exciter 3 made in the form of a disk installed on the end face of hollow sealed dielectric cylinder 4, whose other end is installed on internal metal wall 5 and connected to two branch pipes 6 for circulation of coolant; made in external metal wall 7 is radiator 8 in the form of an iris diaphragm consisting of a set of metal arched plates 9; each of these plates is furnished with driven (10) and axial (11) pins, and rotary ring 12 with radial slots 13 for driven pins 10, the ring is installed for rotation in external wall 7 furnished with holes 14 for axial pins 11. EFFECT: reduced frequency dependence of reflection factor of radiating aperture on the contact surface of biologic tissue; reduced probability of surface burn at hyperpyrexia. 3 cl, 4 dwg