Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Patent
1982-10-27
1985-03-26
Chatmon, Saxfield
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Combined cathode ray tube and circuit element structure
315 36, 313421, H01J 2316, H01J 2996
Patent
active
045075867
ABSTRACT:
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.
REFERENCES:
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patent: 3174070 (1965-03-01), Moulton
patent: 3504222 (1970-03-01), Fukushima
patent: 3694689 (1972-09-01), Odenthal et al.
patent: 3849695 (1974-11-01), Piazza et al.
patent: 4093891 (1978-06-01), Christie et al.
patent: 4207492 (1980-06-01), Tomison et al.
Angello Paul S.
Chatmon Saxfield
Tektronix Inc.
Winkelman John D.
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