Abstract A laminated resistor structure for low ohmic valued, high frequency and high power applications and a method for fabricating such a resistor structure. In the disclosed method, part of the resistive layer is removed from the laminated structure to form a plural branch pattern having a pair of spaced apart portions and a plurality of spaced apart elongated strips extending between the portions. The resistive layer pattern forms a parallel electrical connection of the resistive strips to provide not only low ohmic value but also a relatively large area of the laminated structure for power dissipation. By forming the resistive strips with straight line geometries, the inductance is minimal, thereby providing a high frequency capability.
The combination comprising: a layer of resistive material disposed on a carrier body in a plural branch pattern having a pair of spaced apart portions and a plurality of separate branch strips spaced apart from one another and extending between the portions so as to form separate resistive elements electrically connected across one another; first and second electrically conductive members in electrical contact with different ones of the spaced apart portions; and said carrier body including a high thermal conductivity metallic plate and a relatively thin layer of insulating material, the insulating layer being disposed between the metallic plate and the resistive layer in a sandwich type structure.
Claim 2
Dependent Claim
108 words
The combination comprising: a layer of resistive material disposed on a carrier body in a plural branch pattern having a pair of spaced apart portions and a plurality of separate branch strips spaced apart from one another and extending between the portions so as to form separate resistive elements electrically connected across one another; first and second electrically conductive members in electrical contact with different ones of the spaced apart portions; and said carrier body including a high thermal conductivity metallic plate and a relatively thin layer of insulating material, the insulating layer being disposed between the metallic plate and the resistive layer in a sandwich type structure.
Claim 3
Dependent Claim
23 words
The invention as set forth in claim 1 wherein the elongated strips have straight line geometries and are disposed parallel to one another.
Claim 4
Dependent Claim
23 words
The invention as set forth in claim 2 wherein a further layer insulating material overlies the resistive foil pattern in a protective relationship.