Wave transmission lines and networks – Resonators – With tuning
Patent
1981-08-04
1983-05-24
Nussbaum, Marvin L.
Wave transmission lines and networks
Resonators
With tuning
333202, H01P 700, H01P 706
Patent
active
043852793
ABSTRACT:
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.
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Conklin John B.
Motorola Inc.
Nussbaum Marvin L.
Roney Edward M.
Southard Donald B.
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