. The Bell System technical journal . there is the series reactance Xo and the output circuit of the magnetron,forming a transducer through which the reflection coefi&cient defining theload admittance may be transformed by the expression (31). In under-going such a transformation the contours of constant power and frequencyplotted on the r plane retain their general form although they may be ro-tated and expanded or contracted. Thus the general form of the Riekediagram shown in Fig. 32 (b) should be the same as that experimentallydetermined and plotted on a reflection coefiicient plane for a p
. The Bell System technical journal . there is the series reactance Xo and the output circuit of the magnetron,forming a transducer through which the reflection coefi&cient defining theload admittance may be transformed by the expression (31). In under-going such a transformation the contours of constant power and frequencyplotted on the r plane retain their general form although they may be ro-tated and expanded or contracted. Thus the general form of the Riekediagram shown in Fig. 32 (b) should be the same as that experimentallydetermined and plotted on a reflection coefiicient plane for a point in theoutput line. Fig. 33 is such a Rieke diagram and its resemblance to thatof Fig. 32 (b) is apparent. Magnetron Circuit Parameters: The fact that the circuit theory ofthe magnetron based on the simple equivalent circuit of Fig. 31 (a) explainsthe nature of the Rieke diagram so well is ample justification for its parameters which specify the equivalent magnetron circuit may be 240 BELL SYSTEM TECHNICAL JOURNAL. g rt =^ § a ^ *j tst; ° o rt III o g «« o .2 aS a J3 «;_« c^S-o o - <u tj ^ o S cd i-i O-o*C rt u g r/< S-c !^ o £fe. o OhSeu-t:) c .^ I o^a a J2 D. C , rtfl .2 „, O -; (D ja ^ o^ o a ^ ;rj v« ^ lUbO •.S3 .r 00 rt rt ^ t- i-i x_ „, t« Urt O Ji 1J ^ o ^ r - ° a ^ in ti a <^^ % 2 3-^ MAGNETRON AS GENERATOR OF CENTIMETER WAVES 241 determined as a function of frequency by a measurement of the impedanceZc looking into a non-oscillating magnetron through its output circuit andan independent measurement or calculation of one of the parameters suchas C or Foc. The impedance Zc in terms of the equivalent circuit is theimpedance across the terminals CD in Fig. 31 (a) looking to the left with
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
