. The Bell System technical journal . 38).Thus /3 can be plotted versus ro. The procedure is repeated for the op-pasite sign of /3 (and therefore the opposite sign of x)- A different curveof jS versus ro is then obtained. Thus for a given value of ro, the forwardand backward propagation constants are different in results (computed for a typical ratio ci/to = 10) are convenientlystated in terms of |8 = /3/(/3o cot i/) and fo = ro/3o cot i/ and are shownin Fig. 12(a) to (c), and again, for fixed fo, in Fig. 13(a) to (e). We notethat for fo in excess of about , the results are al
. The Bell System technical journal . 38).Thus /3 can be plotted versus ro. The procedure is repeated for the op-pasite sign of /3 (and therefore the opposite sign of x)- A different curveof jS versus ro is then obtained. Thus for a given value of ro, the forwardand backward propagation constants are different in results (computed for a typical ratio ci/to = 10) are convenientlystated in terms of |8 = /3/(/3o cot i/) and fo = ro/3o cot i/ and are shownin Fig. 12(a) to (c), and again, for fixed fo, in Fig. 13(a) to (e). We notethat for fo in excess of about , the results are almost the same as those 974 THE BELL SYSTEM TECHNICAL JOURNAL, JULY 1954 -7 -6 ■a. C^ -3 -2 p= 1 W c o r <D y -^^ oh^^ 18 5 / / j^ ne . 1 II U 1 I ^ ^^ ^ \. «■. **.... ■^j* ^-^^- ^= ToPo COT 1// Fig. 12(c) — See Fig. 12. rb = rb/3o cot t// ft =/3/(/3oCOTV) _ WAVE -— FORWARD : WAVE V - To = p = II III ^ 1 1 1 To == = 1 1 1 Fig. 13 — Reduced forward and reverse propagation constants versus a forvarious reduced radii of a cylindrical helix. (Loss free case). The region1 — p < o- < o-o is omitted, (a), above, p = (b) p = (c) p = (d) p= (e) p = GUIDKD WAVE PROPAGATION THliorcill (!YI?OMACNKTIC MKDTA. II 975 BACKWARD WAVE FORWARD WAVE .... L ^ 0)= p = 11 111 1 V ^ \ o — 1 1 1 1 1 1 1 Fig. 13(1)) — See Fig. 13. BACKWARD WAVE FORWARD WAVE - ft \ 1 .5 ^ 1 .0 . To = = - 0 1 1 1 1 1 1 v^ ^ \ fb = 1 1 1 1 1 1 1 0 0
Size: 1336px × 1870px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
