山形大学紀要(工学) 第7巻 第1号(1962)199-211

超短波インピーダンス変成器

横川泉二




Impedance Transformers in VHF Region

Senji YOKOKAWA

Summary-Impedance transformers in VHF region are constructed by the distributed constants circuit, therefore their physical lengths are to olong to use in general low power equipments.
In order to compact the impedance transformer and be more wide band, this paper introduces a new circuit element bifilar helix.
The impedance transformer by the bifilar helix is perfectly small and its electrical characteristic satisfies our demands.
Designs are tried about multi-quarterwave types for general use and tapered line types for extra wide band. These results of experiments about trial designs are obtained values under 1.2 in VSWR.



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