. The Bell System technical journal . 7 X 0 0 >50 MnjZni_5Fe204 (length X dia.) 245 >50 490 735 980 1225 107 1470 120 10 1715 125 11 1960 123 2206 121 2450 123 2695 —- 2940 — 3185 — 3675 — 2 BTL 0 0 >40 NiaZni_iFe204 X 245 25 =40 490 44 =40 735 56 =40 980 61 40 1225 68 1715 82 1960 85 2450 118 3 Ferramic A X 0 0 >50 245 490 735 980
. The Bell System technical journal . 7 X 0 0 >50 MnjZni_5Fe204 (length X dia.) 245 >50 490 735 980 1225 107 1470 120 10 1715 125 11 1960 123 2206 121 2450 123 2695 —- 2940 — 3185 — 3675 — 2 BTL 0 0 >40 NiaZni_iFe204 X 245 25 =40 490 44 =40 735 56 =40 980 61 40 1225 68 1715 82 1960 85 2450 118 3 Ferramic A X 0 0 >50 245 490 735 980 1225 — 1715 — 1960 — 2450 35 — 2695 — — 4 Ferramic G X 0 0 »30 245 38 490 77 735 124 980 157 1225 170 1470 180 3430 * Data given is the difference in db between the major and minor comi)onentsof the elliptically polarized transmitted wave. 24 THE BELL SYSTEM TECHNICAL JOURNAL, JANUARY 1952. CONSTANTLY VERTICALLY POLARIZED WAVE I HORIZONTALLY POLARIZED ROTATING 90°COUNTER-CLOCKWISE VERTICALLY POLARIZED Fig. 11—The microwave gyrator with diagrams which help to explain itsoperation. THE MICROWAVE GYRATOR 25 The active element of the device, the fenite cylinder, has beentermed a Faraday Plate. As was pointed out earlier, the fundamcMital property of the gyratoris the 180° phase difference introtluced Ix^tween the two directions ofpropagation through it. Thus the gyrator may be thought of as a fourterminal circuit element having no phase shift for one direction of trans-mission, and having a 180° phase shift for the opposite direction oftransmission. A convenient circuit symbol for the gyrator, which indi-cates this property, is shown in Fig. 12. If the rectangular waveguides on each side of the Faraday Plate arerotated about their common axis so as to make an angle of 45° with 77- Fig. 12—Circuit symbol for gyrator. -b FARADAYPLA
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
