. The Bell System technical journal . CLASS B(INTENSITY MODULATION) BACKGROUNDNOISE {INTENSITY MODULATION). AZIMUTH ■ Fig. 11.—-Tj^ical ringtime patterns on radar indicators. The cylinder in the 9 knic band is an assembly of a tube and two endplates. One of these is driven by the piston as described and the other isadjustable for leveUing , parallelism of the two plates. E)id Plate Gaps The wanted TE mode is paired with a companion unwanted TM as de-scribed above. The fact that the TM mode has a Q substantially less thanthat of the TE makes the realization of the higher Q difficult. A meth
. The Bell System technical journal . CLASS B(INTENSITY MODULATION) BACKGROUNDNOISE {INTENSITY MODULATION). AZIMUTH ■ Fig. 11.—-Tj^ical ringtime patterns on radar indicators. The cylinder in the 9 knic band is an assembly of a tube and two endplates. One of these is driven by the piston as described and the other isadjustable for leveUing , parallelism of the two plates. E)id Plate Gaps The wanted TE mode is paired with a companion unwanted TM as de-scribed above. The fact that the TM mode has a Q substantially less thanthat of the TE makes the realization of the higher Q difficult. A method is Ill Gil Q RESONANT CAVITIES 429 needed of suppressing the TM in the presence of the TE. Since the resonantcavity is a cyHndcr, of varialjle length, tlie movable end plate (or reflector) FREQUENCY INDICATING DIAL
Size: 1545px × 1617px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
