Annular directional coupler, in particular for microwave-based distance sensors
AssigneeBalluff GmbH
InventorJózsef Geisz
Life of this patent
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Abstract
An annual directional coupler having at least three taps, which are each arranged relative to one another around routes having a wavelength difference of ¼ of a wave guide wavelength, includes in particular at least two branch lines, wherein a first branch line has at least three taps and wherein the at least second branch line does not have any taps and is supplemented by an additional route corresponding to the wave guide wavelength.
Claims5
An annular directional coupler having at least three taps which are each arranged relative to one another around routes having a wavelength difference of ¼ of a wave guide wave length, comprising at least two branch lines,
- wherein a first branch line has at least three taps;
- wherein the at least second branch line does not have any taps and is supplemented by an additional route corresponding to the wave guide wavelength;
- and
- wherein the routes arranged relative to one another between the taps having a wavelength difference of ¼ of the wave guide wavelength and the additional routes are formed by T-pads.
Dependencies are inferred from the claim text.