公开(公告)号：EP0545603A1

公开(公告)日：1993-06-09

申请号：EP92310725.4

申请日：1992-11-24

Applicant: RAYTHEON COMPANY

Inventor： Gattuso, Todd R.

IPC: H01J1/22 ,  H01J23/04 ,  H01J9/08

CPC classification number: H01J23/04 ,  H01J1/22 ,  H01J9/08 ,  H01J2201/2878

Abstract: A cathode heater (10) includes a patterned heater conductor (14) embedded between a dielectric ceramic substrate (12) and a dielectric ceramic layer (16). The ceramic (12,16) has a pair of conductors (20,22) over the respective surfaces thereof to provide electrical contact for the heater. To assemble, the substrate (12) and the layer (16) having the conductors, the substrate (12), layer (16) and printed conductive patterns (20,14,22) are fired to provide a composite multi-layer ceramic heater which can be used to heat cathode electrodes in microwave tubes such as travelling wave tubes. Conductive material (24,26) in holes (12',16') in the substrate (12) and layer (16) provides electrical connection between the conductors (20,22) and the patterned heater conductor (14).

Abstract translation: 阴极加热器（10）包括嵌入在介电陶瓷基板（12）和电介质陶瓷层（16）之间的图案化加热器导体（14）。 陶瓷（12,16）在其相应表面上具有一对导体（20,22），以提供加热器的电接触。 为了组装，将具有导体的基板（12）和具有导体的层（16），基板（12），层（16）和印刷的导电图案（20,14,22）烧制以提供复合多层陶瓷加热器 其可用于加热诸如行波管的微波管中的阴极电极。 在衬底（12）和层（16）中的孔（12'，16'）中的导电材料（24,26）提供导体（20,22）和图案化加热器导体（14）之间的电连接。