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US 9,173,706 B2Granted
Dual-band dipole microwave ablation antenna
AssigneeCovidien LP
InventorFrancesca Rossetto
Life of this patent
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Abstract
A triaxial microwave antenna assembly is disclosed. The triaxial microwave antenna includes a feedline having an inner conductor, a central conductor disposed about the inner conductor and an outer conductor disposed about the central conductor and a radiating portion including a high frequency radiating section and a low frequency radiating section.
Claims9
A triaxial microwave antenna assembly comprising:
- a feedline including an inner conductor, a central conductor disposed about the inner conductor and an outer conductor disposed about the central conductor, wherein each of the inner conductor, central conductor, and outer conductor is insulated from each other;
- and
- a dual dipole antenna having a radiating portion including a first dipole configured to radiate microwave energy supplied to the radiating portion at a first frequency and a second dipole configured to radiate microwave energy supplied to the radiating portion at a second frequency;
- and
- a choke disposed around the outer conductor at a distance of a half wavelength of the microwave energy supplied at the second frequency from a distal end of the inner conductor, the choke configured to only limit the microwave energy supplied to the radiating portion at the second frequency.
2 more elements
Dependencies are inferred from the claim text.