Miniature coaxial resonator and related bandpass filter with ultra-wide stopband

Описание

Тип публикации: статья из журнала

Год издания: 2012

Идентификатор DOI: 10.1134/S106378501201004X

Аннотация: Resonator of a new type is described, which is formed by two coaxial conductors applied onto the internal and external surfaces of a ceramic tube arranged in a metal case. An equation for the resonant frequencies is derived. In comparison to a standard coaxial quarter-wave resonator, the proposed device has a shorter length and manПоказать полностьюifold increased ratio of frequencies of the second resonance to the first resonance. The new resonator can be used for the creation of bandpass filters with ultra-wide stopband. The frequency response of a working prototype four-resonator filter is presented, in which the stopband at a -90 dB level extends up to a frequency that is 47 times greater than the central frequency of the passband.

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Издание

Журнал: TECHNICAL PHYSICS LETTERS

Выпуск журнала: Vol. 38, Is. 1

Номера страниц: 47-50

ISSN журнала: 10637850

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

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