TUNABLE HELICAL RESONATOR

A helical cavity resonator having a grounded shield, a hollow coil form and associated quarter wavelength wire coil. A non-ferrous conductive slug can be adjusted to variable positions inside the hollow coil form. Placement of the slug in a region proximate to the inside of the wire coil tunes the c...

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Bibliographic Details
Main Author MEADOR, RICHARD B
Format Patent
LanguageEnglish
French
Published 26.02.1985
Edition3
Subjects
BASIC ELECTRIC ELEMENTS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
WAVEGUIDES
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Summary:A helical cavity resonator having a grounded shield, a hollow coil form and associated quarter wavelength wire coil. A non-ferrous conductive slug can be adjusted to variable positions inside the hollow coil form. Placement of the slug in a region proximate to the inside of the wire coil tunes the cavity resonator in a predominately inductive manner. Changing the slug position in the bore so that it is proximate to the shield top and removed from the inside of the wire coil tunes the cavity resonator in a predominately capacitive manner. By utilizing both inductive and capacitive tuning a helical cavity resonator with a wide tuning range is realized while maintaining a simple, inexpensive construction.
Bibliography:Application Number: CA19820407988