Traveling wave push-pull electron beam deflector with pitch compensation
AssigneeTektronix, Inc.
InventorRonald E. Correll
Life of this patent
Estimating the term…
Loading patent…
AssigneeTektronix, Inc.
InventorRonald E. Correll
Estimating the term…
An electron beam deflection structure (10) of the traveling wave type includes first and second deflection members (52 and 58) positioned on opposite sides of and extending along the path of an electron beam (26) to deflect the beam in response to deflection signals applied to the deflection members. In a preferred embodiment, both deflection members are of a meander line type which include a plurality of deflection plate segments (74, 76) connected in series by a plurality of lead portions (78) to form a pair of transmission lines, each transmission line having a characteristic impedance that tends to vary with distance along the path of the electron beam due to a flared spacing between the output portions of the deflection members. Pitch compensation including different pitches for the first and second deflection members increases and maintains substantially uniform the characteristic impedance of each transmission line to prevent reflection of the deflection signal back toward the input end of the line.
An electron beam deflection structure comprising
A deflection structure for a cathode-ray tube having means therein for producing a beam of electrons, said structure comprising a spaced-apart pair of traveling wave type deflection members disposed on opposite sides of the beam's path, each member including a plurality of deflection plate segments arranged in spaced, edge-to-edge relation in a row extending generally along said path, the plate segments being electrically connected in series by a plurality of lead portions joining successive pairs of said segments, the deflection members each including a divergent section adjoining the output end thereof in which the plate segments are spaced at progressively increasing distances from said path in the direction of the beam's travel,
An electron beam deflection structure for a cathode-ray tube having means therein for producing such a beam, comprising
Dependencies are inferred from the claim text.