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US 5,350,969 AGranted
Cathode heater and cathode assembly for microwave power tubes
AssigneeLitton Systems, Inc.
InventorTodd R. Gattuso
Life of this patent
Estimating the term…
Abstract
A cathode heater includes a patterned conductor embedded within a dielectric substrate. The ceramic substrate has a pair of conductors over the respective surfaces thereof to provide electrical contact for the heater. To assemble the substrates having the conductors, the substrates and printed conductive patterns 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.
Claims8
A cathode heater, comprising:
- a dielectric;
- a patterned strip conductor embedded in said dielectric;
- first and second conductors disposed over opposing surfaces of said dielectric;
- and
- means for coupling the first one of said conductors to a first portion of said patterned strip conductor, and for coupling said second conductor to a second, different portion of said patterned strip conductor.
2 more elements
A cathode assembly, comprising:
- an electrode member having a first surface with a concave depression and a second opposing surface;
- a cathode heater assembly coupled to said second surface of said electrode, said cathode heater assembly comprising:
- a dielectric;
- a patterned strip conductor embedded within said dielectric substrate;
- first and second conductors disposed over opposing surfaces of said dielectric;
- and
- means for coupling the first one of said conductors to a first portion of said patterned strip conductor and said second conductor to a second, different portion of said patterned strip conductor.
4 more elements
Dependencies are inferred from the claim text.