. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. 450 BELL SYSTEM TECHNICAL JOURNAL with Z21 dependent through the inverse network relation ZnZ-n = R-. This relation, besides ensuring a constant resistance iterative im- pedance, reduces the network parameters at least one half. Since resistances occur explicitly in the structures, these sections will all he dis- sipative. The network of the lattice type, shown in Fig. 4, is symmetrical and has a propagation constant determined by. ^// ^zrR Fig. 4—Lattice type constant
. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. 450 BELL SYSTEM TECHNICAL JOURNAL with Z21 dependent through the inverse network relation ZnZ-n = R-. This relation, besides ensuring a constant resistance iterative im- pedance, reduces the network parameters at least one half. Since resistances occur explicitly in the structures, these sections will all he dis- sipative. The network of the lattice type, shown in Fig. 4, is symmetrical and has a propagation constant determined by. ^// ^zrR Fig. 4—Lattice type constant resistance section. ^ _ 1 + z,,l2R ^ 1 -2u/2i?' (13) where S11Z21 = R^- If 2ii i^ o, reactance, the network will introduce no attenuation, only phase difference. The networks of the hridged-T type are symmetrical and will be given in two groups, the members of each group having the same propagation constant. The two sections of the first group (/„ and h) in Fig. 5 L a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original American Telephone and Telegraph Company. [Short Hills, N. J. , etc. , American Telephone and Telegraph Co. ]
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
