Mobius resonator and filter
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorJeffrey M. Pond
Life of this patent
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Abstract
An electromagnetic resonator and a frequency filter. The resonator is composed of an electromagnetic waveguiding structure which is twisted along its axis while being bent back and the two ends connected smoothly to provide a smooth path to the electromagnetic wave, the twist providing additional phase shift to facilitate a resonant condition in a smaller volume. The filter includes one or more coupled resonators which are coupled in a controlled fashion to an external circuit to realize a desired frequency selectivity.
Claims13
An electromagnetic filter comprising at least one dual mode resonator electromagnetically coupled in a controlled fashion to an external circuit when said at least one resonator each comprising an electromagnetic waveguiding structure of length L with n-fold rotational symmetry is realized by an n-conductor transmission line, where n is an integer greater than or equal to 2, wherein resonant frequencies of said resonator occur when L is a wavelength divided by n.
An electromagnetic dual mode resonator comprising a first and a second electrical conductors each of length L and each having first and second terminals, each of said conductors being electrically insulated from each other, and a cross-over which connects said first terminal of said first conductor to said second terminal of said second conductor and said second terminal of said first conductor to said first terminal of said second conductor to provide a continuous electrical path through said first and said second conductors, whose resonant frequencies occur when L is a half wavelength.
Dependencies are inferred from the claim text.