. The Bell System technical journal . i|X,;t,(W,7r2j ^zh. \/ Characteristics of il/M-type wave-filters;m = .7230, m = .4134. Broken lines indicate the effects of (iru(/») and Wik{m) are illustrated in Fig. 7dissipation.) It should be quite obvious that a wave-filter of any order reducesto the constant k wave-filter when every one of its parametersreaches its limiting value, unity. Frequency Relation in the Attenuation Characteristic of an M-Type or Higher Order Wave-Filter of Any ClassThe attenuation characteristics of J/-type and .l/.l/-type wave-filters which have been illustrated in a l

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. The Bell System technical journal . i|X,;t,(W,7r2j ^zh. \/ Characteristics of il/M-type wave-filters;m = .7230, m = .4134. Broken lines indicate the effects of (iru(/») and Wik{m) are illustrated in Fig. 7dissipation.) It should be quite obvious that a wave-filter of any order reducesto the constant k wave-filter when every one of its parametersreaches its limiting value, unity. Frequency Relation in the Attenuation Characteristic of an M-Type or Higher Order Wave-Filter of Any ClassThe attenuation characteristics of J/-type and .l/.l/-type wave-filters which have been illustrated in a limited frequency range show ELECTRIC 309 that when dissipation is neglected there is infinite attenuation at somefrequency within each branch of Xik. Formula (8), when Vk — 0,gives in the attenuating bands where C7/. ^ — 1 cosh Au{g) = 1 + ^^^■• 1 + (1 -ewu (17) in which g = ;;/, uim, mmm, etc., for the .^/-types and higher critical frequencies occur where the attenuation constant becomeszero, ,

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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1