. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. TRANSMISSION LINES FOR RADIO SYSTEMS 429 the transmitting case, tuned circuits are often found to be both bulky and costly. There are a number of schemes which employ a short sec- tion of line as a transformer element. These are feasible only at fre- FIG 12-A. b'] DECIBELS WHERE n = -^ OR -^ =0 *^ a=COSHo<l b = SINH o,= CHARACTERISTIC IMPEDANCE / / J / / / n / / / / / / W / / / / / / / / / / / i>f^ 9/ V, / / / / 1 f\ /, / / / / A M. /J / y / / //. [/ ^ / /
. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. TRANSMISSION LINES FOR RADIO SYSTEMS 429 the transmitting case, tuned circuits are often found to be both bulky and costly. There are a number of schemes which employ a short sec- tion of line as a transformer element. These are feasible only at fre- FIG 12-A. b'] DECIBELS WHERE n = -^ OR -^ =0 *^ a=COSHo<l b = SINH o,= CHARACTERISTIC IMPEDANCE / / J / / / n / / / / / / W / / / / / / / / / / / i>f^ 9/ V, / / / / 1 f\ /, / / / / A M. /J / y / / //. [/ ^ / / / / ^ x^v ^ y / y 'y y y .' 211^ ^ ^ ^ y' y ^A ^ ^ ^ " — Fig. 12—Line loss as a function of the degree of matching. The several curves are designated in terms of the minimum line loss obtained for the case of a perfect match with the line characteristic impedance. quencies for which the wave-length is short. The circuits so provided are extremely simple and cheap. In another paper ^^ a scheme for employing a one-quarter wave- 16 E. J. Sterba, Proc. I. R. E., p. 1184, July, 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. ]
Size: 3312px × 754px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
