Some Results on Cylindrical Cavity Resonators

HE subject of wave guides and the closely allied cavity resonators was of considerable interest even prior to 1942, as shown in the bibliography. It is believed that this bibliography includes virtually everything published up to the end of 1942. During the war, many applications of cavity resonators were made. Among these was the use of a tunable circular cylinder cavity in the TE 01 n mode as a radar test set; this has been treated in previous papers. 1,2 During this development, a number of new theoretical results were obtained; some of these have been published. 2 Here we give the derivation of these results together with a number of others not previously disclosed. In the interests of brevity, an effort has been made to eliminate all material already published. For this reason, the topics are rather disconnected, and it is also assumed that the reader has an adequate background in the subject, such as may be obtained from a study of references 3 to 7 of the bibliography, or a text such as Sarbacher and Edson. 8 A convenient reference and starting point is afforded by Fig. 1, taken from the Wilson, Schramm, Kinzer paper. 2 This figure also explains most of the notation used herein. ACKNOWLEDGEMENT