High gain miniature crossed-field amplifier

Details High gain miniature crossed-field amplifier High gain miniature crossed-field amplifier

1988-05-17

1989-05-16

Mottola, Steven

Amplifiers

With magnetically influenced discharge device

315 393, H03F 354, H01J 2534

Patent

active

048313351

ABSTRACT:
There is provided a miniature high gain forward wave crossed-field amplifier wherein the anode slow wave structure includes double helix coupled vanes having a predetermined pitch such that the distance between the plane of symmetry of each vane is substantially narrow as compared with the thickness of each vane. The vanes also having a predetermined length and height, the height being greater than one half of the length. The wires of the double helical coils has a cross-sectional thickness which is at least one order of magnitude less than the plane of symmetry diameter of each turn of the coils. The distance between the outer diameter of each coil along the transverse face of each vane is quite large. The pitch ratio of the vanes is less than one half of the thickness thereof. Samarium cobalt magnets are used having annular end pieces which form the walls of the vacuum chamber. A high gain of 18 to 22 dB in a volume of approximately 50 cubic inches and a weight of less than 10 pounds is achieved.

REFERENCES:
patent: 4480235 (1984-10-01), Gerard
patent: 4677342 (1987-06-01), MacMaster et al.
patent: 4742271 (1988-05-01), MacMaster et al.

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