H - Electricity – 01 – J
Patent
H - Electricity
01
J
353/11
H01J 25/34 (2006.01) H01J 23/00 (2006.01) H01J 23/26 (2006.01)
Patent
CA 1177578
TRAVELING WAVE TUBES HAVING BACKWARD WAVE SUPPRESSOR ABSTRACT OF THE DISCLOSURE A traveling wave tube having an electrically conductive slow wave structure through which, during operation an electron beam travels along an axis, the slow wave structure comprising a helix disposed along and about the axis, the helix being formed from at least one member, the slow wave structure also including a support structure for the helix and a tubular housing coaxially disposed about the helix, characterized in that the pitch of the helix varies as a predetermined function of distance along the helix and a preselected structural dimension of the support structure varies as a junction of distance along the helix in a set relationship to the varying of the pitch so as to favor the amplification of a wave having a given center frequency traveling along the slow wave structure in the direction of travel of the electron beam while suppressing waves traveling in the opposite direction.
399086
Litton Systems Inc.
Macrae & Co.
LandOfFree
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