Metal working – Method of mechanical manufacture – Electrical device making
Patent
1987-09-24
1988-10-11
Eley, Timothy V.
Metal working
Method of mechanical manufacture
Electrical device making
128784, 174 75C, 174 88C, 333257, 439578, 439585, H01B 1320
Patent
active
047760869
ABSTRACT:
A microwave collinear antenna array applicator for in situ or in vivo treatment of tumors and/or other materials by hyperthermia is disclosed. The array consists of a plurality of harmonically related resonant coaxial antenna elements connected electrically in series to provide uniform heating along the entire length of the array. At the distal end of the array, a resistor may be provided at the inner conductor for steering the heating pattern. At the proximal end of the array, an impedance matching dielectric structure is provided to enable maximum power transfer to the array and to minimize stray leakage currents along the outside of the coaxial transmission line. The array may be made longer or shorter without changing frequency and therefore, depth of penetration by simply adding or subtracting half-wave resonant elements or sections of coaxial transmission line. A lossy sleeve member may be provided around the applicator to provide a localized source of heat.
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Crooker Ronald H.
Kasevich Raymond S.
McQueeney James F.
Arbes Carl J.
Eley Timothy V.
Kasevich Associates, Inc.
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