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US 6,608,598 B2Granted
Tuning circuit for edge-loaded nested resonant radiators that provides switching among several wide frequency bands
OwnerWalter Gee, Paul E. Mayesinventors
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Abstract
An improved tuning method is used in conjunction with a set of nested electrically conducting cones to increase the frequency band over which the resulting radiating system functions as an electrically small antenna with controlled variation in input impedance. This technique enables switching of the frequency band by means of simple circuits that can be activated by a control voltage.
Claims12
An antenna comprising:
- a plurality of overlapping conductive members with a space between adjacent ones of said conductive members;
- a plurality of first reactive elements respectively electrically connected between adjacent ones of said conductive members in an outer region of said conductive members;
- wherein at least one of the individual overlapping conductive members is segmented such that insulation separates adjacent segments and the segments are conductive portions that extend outward from a center.
Dependencies are inferred from the claim text.