Non-invasive quarter wavelength microwave applicator for hyperthermia treatment

摘要

A printed circuit board structure fabricated to define a plurality of quarter wavelength microstrip antennas, each radiating microwave energy in a dipole pattern. The ends of the microstrip antennas are formed overlapping the ends of adjacent microstrip antennas so that a resultant additive effect of the radiated microwave energy is exhibited near the ends of the antennas. The overall effect is to produce a more uniform radiation pattern which does not have the typical radiation minima located at the ends of the dipole antennas.