Double staggered ladder circuit

Details Double staggered ladder circuit Double staggered ladder circuit

1985-08-09

1986-04-29

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

315 35, 315 393, 333157, 29600, H01P 900, H01J 2536

Patent

active

045860092

ABSTRACT:
A double-coupled ladder circuit for a traveling-wave tube has been a slow-wave circuit formed of a pair of combs, each cut from a single piece of metal. Transverse grooves are cut in each piece to form teeth and axial grooves are cut in the ends of the teeth. The two combs are joined at teeth ends to form a ladder with the transverse grooves aligned to form cavities and the axial grooves aligned to form a beam passageway. Coupling apertures are cut in both sides of a first set of alternating ladder rungs and a second set of apertures cut in the comb backing members over the second, interleaved, set of rungs. Thus, each cavity is coupled on two opposite sides to its preceding cavity and on the two remaining sides to its following cavity. The double coupling provides increased bandwidth and efficiency. Finally, side plates are affixed to cover the apertures, complete the cavity walls and form the vacuum envelope.

REFERENCES:
patent: 3400297 (1968-09-01), Miyamoto
patent: 4237402 (1980-12-01), Karp
patent: 4409519 (1983-10-01), Karp

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