Novel Low Temperature Cofired Ceramic Manufacturing Techniques for a Magnetron Field Emission Cathode

Black, Daylon

doi:10.18122/td/1515/boisestate

Cited by 1 publication

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“…This process was used to build proof‐of‐concept cathode structures that would not short electrically and would drive the field emission die in high vacuum (10 −8 Torr). The step by step cathode manufacturing process and the complete research is discussed in greater detail in 19 …”

Section: Resultsmentioning

confidence: 99%

A cathode support structure for use in a magnetron oscillator experiment

Black

Harper

Ward

et al. 2020

Int J Applied Ceramic Tech

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A low temperature co‐fired ceramic (LTCC) material system has been used to develop a protype field emission cathode structure for use in an experimental magnetron oscillator. The structure is designed for used with 30 gated field emission array (GFEA) die electrically connected through silver metal traces and electrical vias. To approximate a cylinder, the cathode structure (48 mm long and 13.7 mm in diameter) is comprised of 10 faceted plates which cover the GFEA dies. Slits in the facet plates allow electron injection. The GFEA die (3 mm × 8 mm) are placed in axial columns of 3 and spaced azimuthally around a cylindrical support structure in a staggered configuration resulting in 10 azimuthal locations. LTCC manufacturing techniques were developed in order to fabricate the newly designed cathode with seven layers wrapped to form the cylinder with electrical traces and vias. Two different cathode wrapping techniques and two different via filling techniques were studied and compared. Two different facet plate manufacturing techniques were studied. Finally, four different support stand configurations for firing the cylindrical structure were also compared with a square post stand having the best circularity and linearity measurements of the fired structure.

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Section: Resultsmentioning

confidence: 99%