Hyperthermia (HT) has a high potential to improve treatment results in Head and Neck (H&N) patients. However, an appropriate applicator that can heat both superficial and deep located target regions is not available. In previous studies 1 2 we investigated the possibilities of focussed RF HT for the neck region. We found that a setup of six to eight antennas, operating at 433MHz, can be used to obtain the desired power absorption (PA) pattern in the neck. In the present study we extend the previous work and converge towards one array setup, with multiple antenna rings, that meets the clinical demands. Hereto we investigated the ability to deposit RF-energy centrally in the neck as a function of patient positioning, antenna ring radius (R), number of antenna rings, number of antennas per ring and distance between the outer antenna rings (D).